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Smart Air Management - Wanderlodge Owners Group

1. LABEL NG Na A ORG Ca p E SOLENOID VALVE BANK 2 ee FED a DEF LABEL C BLK C133 O G IC a X AXIS SENSOR AHH H HABEL A 5 g HO O00 E SOLENDID VALVE BANK 1 HOOO z OOH Uu LABEL ABC e VW f OOO OOO zd v axis sensor E A YEL Cil4 ABC EI CBA ABC 8 LABEL B WHT Chie S ADE DRIVE AXLE C BRN C118 A YEL BLK Can IVE A D GRN C119 B WHT BLK Clee CUR E BLU C117 C BRN BLK 124 SENSOR F VIO C115 D GRN BLK CL25 A RG C13 GROUND E BLU BLK Ct23 B VID Ou 4 F VIO BLK C121 C Dk C133 BLK C132 O mm z SR i 7 pa SS 2 TOH oh YEL E B GRN BLK C15 7 CL9 DEN C BLK D fest Sal Zeg LI C110 BLU 1 12 COOL VIO BEBODOOOOOOO 4 3 d 254 J 60000000000 I 4 D0888BYOOD088 a ao FIR Se 24 35 C130 ORG C133 BLK B YEL BLK Ci4 F7 ae d ev BS BS LET re AMP CBLAGK CL GRN BLK Ca GRN LABEL Cil OPEN C119 GRN 7 Pe CLI LT BLU Cie OPEN C120 YEL BLK SERVICE SWITCH NI C133 BLK C133 BLK 2 EN 2 LABEL Cle OPEN C121 VIO BLK C130 ORG 4 YEL BLK C122 WHT BLK fe eee DRIVE AXLE C13 GRN BLK C123 BLU BLK CL7 GRN BLK ORV C16 YEL BLK C1 24 BRN BLK D YEL A BLK C133 A BLK C133 SENSOR m C17 GRN BLK C125 GRN BLK C19 DEN B ORG C130 4 B ORG C130 CL8 YEL BLK CL26 OPEN C GRN BLK C17 C GRN CL9 C9 GEN C127 DPEN 000 CLIO BLU CL28 OPEN A BLK C133 A BLK C133 CU VIO CL29 OPEN B ORG C130 B ORG C130 4 8 ABC CLI LT BLU e130 ORG C YEL BLK C16 C YEL CL8 CLI3 OPEN C131 ORG
2. the vehicle operator to reduce the load on the rear axle to decrease the turning radius and improve maneuverability This feature can also be used to increase the traction of the drive axle This mode may be selected by depressing the tag dump pushbutton located in the center of the user interface with the vehicle speed at 12M PH or less Once the mode is selected the system ECU will reduce the tag axle pressure from normal to approximately 5psi and the LED located above the pushbutton on the user interface will remain on as a visual indication the mode is active The system will remain in this mode as long as the vehicle speed remains at or below 12M PH or the vehicle operator does not momentarily depress the tag dump pushbutton If the tag dump pushbutton is depressed the system ECU will deactivate the mode and return the tag axle to the normal pressure However if the tag dump pushbutton is not depressed with the mode active and the vehicle speed increases above 12M PH but remains below 20M PH the mode remains active With the vehicle speed above 12M PH and below 20M PH the ECU will partially increase the tag axle pressure to 30psi Should the vehicle speed exceed 20M PH then the ECU will automatically cancel the mode and the tag axle pressure will be returned to normal Once the mode becomes deactivated by depressing the tag dump pushbutton or exceeding 20M PH the ECU will automatically turn off the LED File
3. 49418 Phone 616 530 1717 www hadley products com System Scope The Smart Air M anagement System is designed for this application to maintain a predetermined vehicle ride height automatically and provides a means to manually lower or raise the ride height and exhaust and fill the tag axle through a customized user interface The system provides for side to side height control as well as front to back control The system also contains a feature to determine if the vehicle is on a surface that will enable the chassis to be leveled within vehicle mechanical parameters A visual indication is also provided to determine mode selection and system malfunction detection System Definition The Smart Air M anagement System SA M S contains four vehicle height sensors a pneumatic manifold assembly an electronic control unit ECU the necessary wire harnessing a pushbutton control user interface and the necessary vehicle interface hardware to provide the defined modes of operation and system functionality The user interface contains the required pushbuttons to allow the vehicle operator to raise and lower the vehicle manually exhaust and fill the tag axle manually enable a self leveling feature to level the vehicle when parked on an uneven surface and contains LED s light emitting diodes to provide a visual indication to the vehicle operator of the manual mode status as well as system error detection The location and mounting of the user inter
4. Tilt the screwdriver handle down so the clip slides out towards the screwdriver 5 Remove the clip and slide the coil upward to clear the housing of the valve body 6 To reinstall slide the coil over the valve body and reinstall the clip 7 Install and crimp a new pin connector on the coil wires 8 Reinstall the wire in the harness connector reattach the ground wire and reconnect the wire harness connector A Warning System operating pressures are typically 90 130psi Steps should be taken to relieve pressure from the system prior to removing any valve assembly from the manifold Filename B lue Bird_Owner amp Service M anual Page 15 of 42 Date 03 04 05 Hadley 2851 Prairie S W Grandville M 49418 Phone 616 530 1717 www hadley products com Error Codes The ECU monitors its outputs and has the ability to detect either an open or short in the load circuitry This diagnostic ability will generate an error code when such an electrical problem is detected with any of the manifold valves or the associated wiring Once an open or short is detected the respective error code will be displayed by the ECU flashing the suspension indicator located on the user control panel The error code will be either a two or three digit number and can be interpreted by counting the number of times the suspension indicator flashes Each digit will be separated by a short delay Once each digit has been represented a
5. 12 Voltage Battery Voltage Invalid 4 13 User 42 Power Source Low Battery Voltage 9 7 VDC 43 Power Source High Battery Voltage gt 14 8 VDC 44 Can Bus Error Can Bus Data Not Read 333 Output Connector RCO POWER OUTPUT 1 FRONT DVR EXH Solenoid Valve 1 111 RC1 POWER OUTPUT 2 FRONT DVR FILL Solenoid Valve 1 112 RC2 POWER OUTPUT 3 FRONT CURB EXH Solenoid Valve 1 13 RC3 POWER OUTPUT 4 FRONT CURB FILL Solenoid Valve 1 14 RC4 POWER OUTPUT 5 DRIVE DVR EXH Solenoid Valve 1 21 RC5 POWER OUTPUT 6 DRIVE DVR FILL Solenoid Valve 1 22 RB4 POWER OUTPUT 7 DRIVE CURB EXH Solenoid Valve 2 23 RB5 POWER OUTPUT 8 DRIVE CURB FILL Solenoid Valve 2 24 RJO POWER OUTPUT 9 TAG DVR EXH Solenoid Valve 2 31 RJ1 POWER OUTPUT 10 TAG CURB EXH Solenoid Valve 2 32 RJ2 POWER OUTPUT 11 TAG CURB FILL Solenoid Valve 2 33 RJ3 POWER OUTPUT 12 TAG DVR FILL Solenoid Valve 2 34 RJ4 POWER OUTPUT 13 unused 41 RJ5 POWER OUTPUT 14 unused 42 RJ6 POWER OUTPUT 15 unused 43 RJ7 POWER OUTPUT 16 TO RV SUSP DUMP LIGHT 44 Power Conn 1 Unplugged Valve Manifold Plug Disconnected 213 Power Conn 2 Unplugged Valve Manifold Plug Disconnected 214 Filename Blue Bird_Owner amp Service M anual Page 16 of 42 Date 03 04 05 Hadley 2851 Prairie S W Grandville M 49418 Phone 616 530 1717 www hadley products com M anifold Error C ode Identification The below information identifies the manifold component with its associated error code listed in the previous chart 131 132 Code 123 Code
6. that interface with the system ECU through a supplied vehicle wiring harness The red wire provides an ECU generated reference voltage typically 5VDC 2 The black wire provides the ground and the white wire provides the voltage signal back to the ECU This voltage is proportional to the angle of the sensor from the horizontal position With the chassis of the vehicle level the voltage signal on the white wire is one half of the supplied reference voltage approximately 2 5V DC to 2 7 VDC As the front of the sensor is raised the voltage on the white wire will increase until the sensor reaches approximately a 10degree angle from the horizontal position With the front of the sensor raised to this angle the voltage on the sensor s white wire will be approximately 4 5V DC The sensor angle change in this direction would be typical in an uphill slope of the chassis As the rear of the sensor is raised the voltage on the white wire will decrease until the sensor reaches approximately a 10degree angle from the horizontal position With the rear of the sensor raised to this Filename Blue Bird_Owner amp Service M anual Page 21 of 42 Date 03 04 05 Hadley 2851 Prairie S W Grandville M 49418 Phone 616 530 1717 www hadley products com angle the voltage on the sensor s white wire will be approximately 0 5VDC The sensor angle change in this direction would be typical in a downhill slope of the chassis It is important to c
7. www hadley products com Appendix A SAMS Wiring Harness Installation Precautions 1 Be sure the utilized vehicle power source is not overloaded or undersized Sufficient system power is required to optimize the manifold solenoid valve operation i e 10V DC 16VDC 1 2A per solenoid 2 Be sure the power and ground connections are clean and tight and the manifold ground wire s are connected to a good chassis ground 3 Be sure the harness is routed correctly so as the height sensor connectors are installed to the correct sensor on the vehicle The following describes the center wire color of the system harness connectors and their associated sensor connection Yellow Wire F ront Drive Height Sensor Connector Green Wire F ront Curb Height Sensor Connector Yellow Wire with Black Stripe Rear Drive Height Sensor Connector Green Wire with Black Stripe Rear Curb Height Sensor Connector 4 DO NOT pull on the harness connectors excessively during the installation process Too much force on these components can pull wires from the connector or break wires from their pin crimp connection 5 Keep the harness away from engine exhaust manifolds mufflers exhaust pipes catalytic converters and other heat generating components 6 Keep the harness away from pinch points and sharp objects to prevent crushing cutting and damage to the harness assembly which could result in open or short circuits 7 Allow sufficient bend radii where applic
8. CLI4 YEL C132 BLK CLI5 VIO C133 BLK Oe WHT CL34 OPEN ALAB oy oy oy CLZ BLU C135 OPEN wW O Y TO SERVICE SWITCH C 12 C 10 C 10 C 3 OTES LABEL LABEL LABEL LABEL ALL CONNECTORS ARE SHOWN FROM REAR DD IC ID TE 2 HARNESS MUST CONFORM TO HADLEY ENGINEERING SPECIFICATION ES 1043 3 ALL CONNECTORS TO HAVE LABEL IDENTIFICATION 4 SEE SHEET 2 FOR DETAILED HARNESS CHART Grandville M 49418 www hadley products com H adley 2851 Prairie S W Phone 03 04 05 Date 34 of 42 Page M anual Ice Blue Bird Owner amp Serv Filename Hadley 2851 Prairie S W Grandville M 49418 Phone 616 530 1717 www hadley products com SAMS Pneumatic L ayout x 2 TI nsF a msg E 3 5 faz Mm gt 2 DRE lt S zO ETO om m Ke zme S 253 3 ge H 2 DIZ gt T a 6D 2 TI LC o CH o Kai p3 gt Cc 2 Ee N A2 JI m o D i e z CH O fn m 5 d O 3 d m m zZ GE eee g d a Ne 7 il z PS pa KA SW 2 Si 7 F SE Pa PF aq bh a fy S A bA 3 tg aa BO SE Ge SO Ke Es B25 ae ae we SES T E EE m F ASO oy ee gt R Wel zZ 39 3 J 23 gt SA W 25 n Wha ba 2 NG OD Zz YAYA AYA Adis S YZIAIYA FIXV LNOYA YAYA AYA Filename Blue Bird Owner amp Service M anual Page 35 of 42 Date 03 04 05 Hadley 2851 Prairie S W Grandville M 49418 Phone 616 530 1717
9. Curb Pressure T ransducer 24 twenty four X Axis Inclination Sensor 31 thirty one Y Axis Inclination Sensor 32 thirty two Front Driver Height Sensor 33 thirty three Front Curb Height Sensor 34 thirty four Supply Pressure Transducer 41 forty one Invalid Battery V oltage 42 forty two Not Used 43 forty three Low Battery V oltage less than 9 7V DC 44 forty four High Battery V oltage greater than 14 8V DC Filename Blue Bird Owner amp Service M anual Page 11 of 42 Date 03 04 05 Hadley 2851 Prairie S W Grandville M 49418 Phone 616 530 1717 www hadley products com e 111 one hundred eleven Front Driver Exhaust Solenoid V alve 112 one hundred twelve Front Driver Fill Solenoid Valve 113 one hundred thirteen Front Curb Exhaust Solenoid V alve 114 one hundred fourteen Front Curb Fill Solenoid Valve 121 one hundred twenty one Rear Drive Driver Exhaust Solenoid V alve 122 one hundred twenty two Rear Drive Driver Fill Solenoid V alve 123 one hundred twenty three Rear Drive Curb Exhaust Solenoid V alve 124 one hundred twenty four Rear Drive Curb Fill Solenoid Valve 131 one hundred thirty one Rear Tag Driver Exhaust Solenoid V alve 132 one hundred thirty two Rear Tag Curb Exhaust Solenoid V alve 133 one hundred thirty three Rear Tag Curb Fill Solenoid V alve 134 one hundred thirty four Rear Tag Driver Fill Solenoid V alve 144 one hundred forty four
10. PH or less Once the mode is selected the system ECU will temporarily raise the rear of the vehicle and the LED located above the pushbutton on the user interface will blink as a visual indication the mode has been activated The ECU will automatically return the rear of the vehicle to the normal ride height when the speed exceeds 20M PH the mode has been active for more than 40seconds or the operator momentarily depresses the lower pushbutton located on the user interface Once the mode has been deactivated the ECU will automatically turn off the LED Raising the entire vehicle can be chosen by the vehicle operator to increase the clearance between the entire vehicle and the ground It may be necessary for the operator of the vehicle to select this mode when situations arise where the body of the vehicle must be raised to avoid or to overcome an undercarriage obstacle This mode may be selected by depressing and holding the raise pushbutton for approximately 3 seconds with the vehicle speed at 10M PH or less The pushbutton must be held until the LED located above the pushbutton remains on continuously At that point the pushbutton can be released and the mode will remain active Once the mode becomes active the system ECU will raise the entire vehicle and the LED located above the pushbutton will remain on as a visual indication the mode is active The ECU will automatically return the entire vehicle to the normal ride height when t
11. RV Suspension Dump LED 213 two hundred thirteen Valve M anifold Connector 1 M ale Disconnected 214 two hundred fourteen Valve M anifold Connector 2 Female Disconnected 333 three hundred thirty three CAN bus Data N ot R ead Note Each time the engine is started the suspension indicator will be illuminated for approximately 5 seconds During this time interval the ECU will gather information from the system sensors After the time interval has elapsed the E CU will turn off the indicator This is a normal power up function and should not be confused with a system problem Note The following illustration summarizes the system warning lights with relation to the respective user interface indicators La A gt E pun M SLS RAISE A o TAG LOWER DUMP E be Suspension Indicator This indicator will be flash when a SUSPENSION system fault has occurred AIR PRESSURE Air Pressure Indicator This indicator will flash when the air pressure is insufficient to properly operate the air suspension control system This indicator will light for five 5 seconds when the engine is started Filename Blue Bird_Owner amp Service M anual Page 12 of 42 Date 03 04 05 Hadley 2851 Prairie S W Grandville M 49418 Phone 616 530 1717 www hadley products com SAMS Manifold amp Valves This document is written to provide an introduction to the manifold and valves used on Blue
12. mounting the sensor the sensor function and to provide a basic troubleshooting procedure Theory of O peration The height sensor is used by the system ECU electronic control unit to monitor and control the vehicle ride height The sensor arm moves in reaction to the suspension movement and provides a voltage signal that is proportional to the ride height at any given time Typically while the vehicle is in operation the ECU will default to and maintain a programmed ride height This system design requires a four sensor configuration two front sensors and two rear sensors one each mounted at each corner of the vehicle suspension The sensor contains three wires red black blue that interface with the system ECU through the supplied system wiring harnesses The red wire provides an ECU generated reference voltage typically 5V DC 2 The black wire provides the ground and the blue wire provides the voltage signal back to the ECU This voltage is proportional to the position of the sensor arm within its range of travel The sensor arm is typically installed to be in the center of its travel when the vehicle is at normal ride height This would provide a voltage signal on the blue wire that is one half of the supplied reference voltage approximately 2 4V DC 2 6V DC As the sensor arm moves clockwise the voltage on the blue wire would continue to increase until the sensor arm reaches approximately 45degrees of rotation from the
13. sections Important When towing jacking or raising the vehicle for service the white harness plug located near the manifold assembly must be disconnected This will prevent the SAM S system from operating and eliminating the potential for unexpected suspension movement that may cause damage to the vehicle or personal injury Filename Blue Bird_Owner amp Service M anual Page 5 of 42 Date 03 04 05 Hadley 2851 Prairie S W Grandville M 49418 Phone 616 530 1717 www hadley products com Raised M ode This mode of operation is used to increase the clearance between the underside of the vehicle frame and the ground surface The vehicle operator must select this mode of operation and choose to raise either the rear only of the vehicle or to raise the entire vehicle A separate action must be performed by the vehicle operator in order to initiate either function of the raised mode of operation This action is further discussed in the following two paragraphs Raising the rear only of the vehicle can be chosen by the vehicle operator to increase the clearance between the rear bumper of the vehicle and the ground It may be necessary for the operator of the vehicle to select this mode when situations arise where the rear of the vehicle may drag due to the length of the vehicle and the departure angle This mode may be selected by momentarily depressing the raise pushbutton located on the user interface with the vehicle speed at 20M
14. the five transducer functions Filename Blue Bird Owner amp Service M anual Page 26 of 42 Date 03 04 05 Hadley 2851 Prairie S W Grandville M 49418 Phone 616 530 1717 www hadley products com Wiring Harness Blue Wire System Pressure Transducer Wiring Harness Y ellow Wire Black Stripe Drive Axle Driver Side Transducer Wiring Harness Green Wire Black Stripe Drive Axle Curb Side Transducer Wiring Harness Y ellow Wire Tag Axle Driver Side Transducer Wiring Harness Green Wire Tag Axle Curb Side Transducer Note Prior to connecting the system wiring harness connectors to the transducers be sure to apply a good brand of moisture displacement lubricant to the connectors This will help prevent moisture from entering the connections and affecting system operation due to the low current and voltage application of the transducers Transducer Test Procedure The ECU monitors the system and can identify voltages that are below 0 4V DC short to ground broken wire disconnected harness connector etc or voltages equal to the supply reference short to supply voltage Voltages associated with these conditions would generate an alarm The alarm would be displayed by a fault code on the vehicle user control panel by flashing the suspension indicator However voltages that are above 0 4V DC and below the supply reference from the ECU fall within the normal operating parameters of the transducer and are not subject to alarm If
15. the sensor connector 0 Obtain a voltmeter to monitor the feedback voltage 1 Comnect the red lead of the voltmeter to the sensor white wire and the black lead of the voltmeter to the sensor black wire 12 Turn on the DC power supply and adjust the voltage to 5V DC if necessary 13 With the sensor sitting flat on the horizontal surface for testing the voltage on the white wire should read approximately one half of the 5V DC supply i e 2 5V DC to 2 7V DC 14 Slowly raise the front of the sensor sensor end on your left hand side with the wires while keepi ng the rear of the sensor the sensor end on your right hand side in contact with the horizontal 7 8 9 1 1 Filename B lue Bird_Owner amp Service M anual Page 23 of 42 Date 03 04 05 Hadley 2851 Prairie S W Grandville M 49418 Phone 616 530 1717 www hadley products com flat surface The voltage on the voltmeter should steadily increase until an approximate angle of 10degrees is reached With the front of the sensor at this angle the voltage on the voltmeter should read approximately 4 5VDC Any further increase in the angle beyond this point will not result in any further increase in the feedback voltage Note The voltage should increase steadily with no loss in the voltage signal no erratic changes should occur or the voltage should not read 5VDC or OVDC at any point throughout the angle of movement 15 Return the sensor to the full horizontal pos
16. 13 Code 13 Error Code 121 Error Code 113 Error Code 111 Error Code 13 Error Code 134 Error Code 124 Error Error Error Code 122 Code 114 Code 112 Filename Blue Bird_Owner amp Service M anual Page 17 of 42 Date 03 04 05 Hadley 2851 Prairie S W Grandville M 49418 Phone 616 530 1717 www hadley products com Electrical Testing A digital multimeter is a useful tool for troubleshooting and isolating electrical related problems Open circuits are identified by no continuity shown on the display LOL Open circuits in the SAM S manifold electrical system are typically caused by pins that have pulled loose from the associated harness connector wires that are broken at the pins in the harness connector breaks in the coil windings or broken wires in the wiring harness due to improper harness routing during the installation of the system The coil can be tested for an open or short circuit by checking the resistance value of the windings The coil must first be isolated by disconnecting its associated wiring harness connector Obtain a multimeter as previously suggested and rotate the dial to the OHMS resistance setting In most cases this should turn on the power to the multimeter If not turn on the required switch to power the multimeter Connect the red lead of the multimeter to the red lead in the wiring harness connector of the coil to be tested Next connect the black
17. 17 www hadley products com With power applied to the ECU and no pressure applied to the transducer the voltage on the transducer connector blue wire will be approximately 0 5VDC As the pressure on the transducer increases the voltage will increase at a linear rate The following chart exemplifies a transducer with a typical 0 150 psi sensing range Pressure Transducer Comparison Chart Applied Pressure vs Output Voltage Applied Voltage Pressure psi Output VDC 0 0 5 10 0 7 20 0 9 30 1 25 40 1 5 50 1 75 60 2 0 70 2 25 80 2 5 90 2 75 100 3 1 110 3 4 120 3 75 130 3 9 140 4 25 150 4 5 Note The above chart is accurate within 2 at room temperature according to the manufacturer s specifications Transducer M ounting The pressure transducers contain 1 4 18NPT threads and are installed at suitable locations within the system The threads of the transducers contain a factory installed sealant to prevent air leaks The ceramic housing is durable and the brass body resists corrosion and helps prevent the threads from seizing within the fitting thereby assisting with future serviceability After the transducers are properly mounted and secured in the designated vehicle location connect the associated wiring harness connectors The system wiring harness connectors are of a male configuration The center wire of the wiring harness is color coded for a specific transducer The following lists the wire colors associated with
18. Bird s Smart Air Management System SAMS This discussion will create a basic understanding of the valve functionality The knowledge gained by understanding the document content will provide service personnel with information to diagnose and repair related system problems Theory of Operation The manifold is an electro pneumatic device used to control the air flow within the SAMS system The valves are two position and of acoil actuated design This application requires two valves per air bag for ride height control totaling twelve 12 valves in all One valve serves as a fill valve and allows system air to pass through the manifold into the air bag This causes the air bag to inflate thereby increasing the vehicle ride height The second valve serves as an exhaust valve and allows air to pass from the air bag through the manifold into the atmosphere This causes the air bag to deflate thereby decreasing the vehicle ride height Inclination Sensor X Axis Inclination Sensor Y Axis Fill Valves Inflation J lee Tag Curb Exhaust Se GT et Pressure Valves Pa STK Transducer Manifold SC NAY Tag DVR Air Supply Pressure Port Transducer Manifold Exhaust Drive DVR Drive Curb Pressure Transducer Port Pressure Transducer M anifold Ports to the Vehicle Air Bags Filename Blue Bird_Owner amp Service M anual Page 13 of 42 Date 03 04 05 Hadley 2851 Prairie S
19. Detector the Oatey and Nu Calgon products are available through M SC Industrial Supply Note It is important to pay particular attention to the vehicle air springs bags Leaks in these areas will affect the SAMS system operation and performance and often go undetected unless the leak is severe enough to cause the vehicle to lean During the inspection of the air springs bags pay particular attention to the interface of the upper bead plate to the air spring bag lip area Should a leak be detected in the air spring bag it must be replaced as defined by the vehicle manufacturer s warranty procedure 1 UI 1 m 1 NI Detecti ng air leaks and taking corrective action will optimize system performance eliminate unnecessary troubleshooting prevent system rework and prevent unnecessary air compressor wear due to excessive cycling Filename Blue Bird Owner amp Service M anual Page 39 of 42 Date 03 04 05 Hadley 2851 Prairie S W Grandville M 49418 Phone 616 530 1717 www hadley products com 1 With the vehicle on a level surface determine the amount of jounce compression travel and the rebound extending travel of the suspension These two dimensions indicate the range of A ppendix C SAMS Height Sensor Arm amp Linkage Installation movement for which the suspension can respond to changes in road conditions Example jounce travel 3 rebound travel 4 2 Determine which range of travel is the largest
20. E LABEL IDENTIFICATION 4 SEE SHEET 2 FO ARE SHOWN FROM REAR ONFORM TO HADLEY E GINEERING R DETAILED HARNESS CHART ANGLE SENSOR 1 3 1 BLU C129 2 YEL CL20 LABEL 00 3 GEN C121 RV INTERFACE e ee i ooch 5 GRY Oe 6 WHT C128 000 7 TAN CLIZ C19 YEL JS 8 RED C135 C110 GRN 9 BLK C132 A YEL BLK C13 CA BLU 11 BLU B GRN BLK C12 1 GRY C1 30 CLIS TAN BLK C113 TAN BLK C BLK DA 2 TAN BLK CLI13 CL14 RED BLK C114 RED BLK 3 RED BLK CLI4 LS YEL BLK e113 YEL BLK 6 A YEL BLK C115 C GRN BLK C GRN BLK ASO B 5 GRN BLK CLIg CLI BLU BLK CL17 BLU BLK Cil BLK BLU BLK C4147 CL18 VIO BLK C118 VIO BLK Cie GRN BLK 4 oy 7 VIO BLK C118 CL19 WHT BLK CL19 WHT BLK CLI YELZBLK Ai D 8 WHT BLK C119 C123 TAN Can TAN W GRY l2 LABEL Gi 9 BLK C133 Cle4 RED CL 4 RED OI TAN CAN 10 TAN CL 23 L n YEL C125 YEL C0 YEL INTERFACE C 11 RED C1 24 CL 26 GRN C1 26 GRN Cat GRN l2 YEL Oo e127 BLU SC mil os VIN K LABEL 13 GRN C126 C130 GRY C130 GRY C128 WHT 2 CHASSIS 14 BLU D i 1 31 ORG GEN ORG CLS BLU 6 GROUND 15 XEMPTYz N A E139 BLK Gaa BLK C132 BLK 16 xEMPTYX N A CL35 RED O BLK C132 Pl joe 3 LT 8 1 1 12 mal 72 ay 4 4 000880880000 ddad sada Il 00000000000 100 68 000000000000 16 3 24 35 LABEL SPLICE RED WIRE FROM PANEL CONNECTOR Da YEL D GR
21. NL C134 INTO RED WIRE FROM C131 ORG Be ee Be CL35 AT THIS LOCATION CU BLK CLI9 WHT BLK D GRN BLK eren YEL to CL3 YEL ELK les CBN GLA EMPTY less vm Hai EHPTYS ofa TAN CI SENPrYx CL24 RED e C125 YEL A ORG C131 A ORG C131 CLS EMPTYX B YEL C19 B GRN CL10 C19 YEL C126 GRN C BLK C133 C BLK C133 CLIO GRN C127 BLU A BLK CL33 5 Cll BLU ao A B ORG C131 A CLi2 TAN ELA CRY C BLU On TOOO 4 LAAC C113 TAN BLK Ier ip 30 GOO Cit RED BLK EIS TRG C ABC ABC CS YEL BLK 47 LABEL C116 GRNVBLE E BLK PRESSURE SENSOR bang Ou7 BLU BLK EI RED FRONT DVR FRONT CURB Gite ong CL35 RED ANGLE SENSOR Grandville M 49418 www hadley products com 2851 Prairie S W Phone Hadley 03 04 05 Date 33 of 42 Page M anual Ice Blue Bird Owner amp Serv Filename SAMS Rear Harness L ayout Page 2 of 2 616 530 1717
22. Owner amp Service M anual Page 30 of 42 Date 03 04 05 Hadley 2851 Prairie S W Grandville M 49418 Phone 616 530 1717 www hadley products com After the sensor is mounted to the vehicle connect the sensor wiring female connector to the respective vehicle wiring harness male connector The center wire of the vehicle wiring harness connector will be color coded to identify the respective location on the vehicle The supplied system wiring harness center wire configuration is as follows Y ellow Wire Front Drive Height Sensor Connector Green Wire Front Curb Height Sensor Connector Y ellow Wire with Black Stripe Rear Drive Height Sensor Connector Green Wire with Black Stripe Rear Curb Height Sensor Connector Note Prior to connecting the wiring harness to the sensor connectors be sure to apply a good brand of moisture displacement lubricant to the connectors This will help prevent moisture from entering the connections and affecting system operation due to the low current and voltage application of the sensor Sensor T est Procedure The ECU monitors the system and can identify voltages that are below 0 4V DC short to ground broken wire disconnected harness connector etc or voltages equal to the supply reference short to supply voltage V oltages associated with these conditions would generate a sensor alarm The alarm would be displayed by flashing a fault code on the user control panel suspension indicator However vo
23. T his M anual was found in a file cabinet that came from the W anderlodge Factory Auction For More Details See Thread http www wanderlodgeownersgroup com forums showthread ph p t 6059 In Post 23 of that thread Ross MacKillop 2006 450 LXi Noted that Unfortunately the manual is not accurate According to Ross the Hadley active in motion portion was deactivated early in the recall modifications The front air bags wire plumbed together so the height sensors could not affect individual bag pressures Increasing one side air pressure to keep the coach level overloaded the wheel tire and axle in many coaches This de activation causes the front side to side loads to remain similar but allows tipping Therefore this Manual should be used for reference only Hadley 2851 Prairie S W Grandville M 49418 Phone 616 530 1717 www hadley products com QS 9000 ISO 9001 Certified Smart Air Management System And Self L eveling System Bluebird Owner amp Service M anual 3 04 2005 T able of C ontents Filename Blue Bird_Owner amp Service M anual Page 2 of 42 Date 03 04 05 Hadley 2851 Prairie S W Grandville M 49418 Phone 616 530 1717 www hadley products com NEE ee Eeer EENEG 4 System Dera EE 4 Normal M TE 4 LR RG KT E 5 EOWel 2d MODE aaa AANI A AA NANAAAi 5 tag Dump MO rian kaa AA ANN ANNA ADAN AA ANNA 6 Self Leveling MODE Aaah NANAIANANA 8 ACTION 10 E rror e 10 SAMS E RTE 12 Theory of Oper
24. W Grandville M 49418 Phone 616 530 1717 www hadley products com The valves are controlled by the SAM S electronic control unit ECU The ECU provides the brains for the Smart Air M anagement System The ECU contains the system specific program to control the vehicle ride height as defined by Blue Bird s engineering specifications for system operation The ECU receives signals from various system components i e height sensors pressure transducers inclination sensors and the user control panel mode of operation to provide system control for obtaining the desired vehicle ride height With no power applied to the valve coils they are in a de energized condition This allows an internal spring to expand and pushes a plunger against the associated manifold port thereby sealing off the internal air passage The stem of the plunger contains two neoprene rings to serve as a guide to provide true and even travel within the body of the valve assembly The face of the plunger also contains a seal that when forced against the seat of the manifold provides a positive seal to prevent air flow through the manifold when the valves are de energized This mechanical action enables the SAM S system to seal the air within the system and maintain the desired ride height Note The ports of the manifold contain a mesh screen to help prevent air contaminates from entering the manifold However itis possible for the screen to become damaged and allow contam
25. a transducer is suspected to be faulty a test can be performed to validate its functionality The following step by step process outlines that test procedure 1 Disconnect power from the system prior to performing any repairs or component removal replacement This will prevent any possible short circuits that could result in component or supply voltage damage 2 Relieve pressure from the system through an appropriate means Warning System operating pressures are typically 90 130psi To avoid the potential of personal injury do not remove the transducer without first relieving pressure from the system 3 Disconnect the wiring harness 3 wire connector from the pressure transducer 4 Unscrew the transducer from the associated fitting Note Use a back up wrench if necessary to relieve stress on the associated fitting while loosening the transducer 5 Obtain a known good air pressure regulator with an accurate gauge 6 Obtain a DC voltage power supply capable of supplying a regulated 5V DC supply 7 Attach a shop air supply line to the inlet of the pressure regulator Be sure the regulator adjustment has been backed off completely to prevent any air discharge from the regulator outlet 8 Secure the transducer to the regulator output utilizing an appropriate reducer fitting Be sure to use a suitable thread sealant to prevent an air leak Also do not use an excessive amount of sealant that could possibly clog the air inlet to the p
26. able to prevent sharp bends kinks and unnecessary strain on the wiring that could result in eventual breakage and open circuits The conduit manufacturer recommends a minimum bend radius of 3 inches 8 Allow sufficient slack in the harness to prevent damage at points of vehicle horizontal and or vertical movement and deflection This will allow the harness to move with the vehicle and prevent unnecessary stress and fatigue resulting in eventual open and or short circuits Note Caution should be taken as not to leave excessive slack which could cause the harness to become snagged while the vehicle is in motion especially in off road conditions 9 Secure the harness every few inches typically 6 12 with nylon straps 10 W hile securing the harness with the nylon straps care should be taken as not to crush the polyethylene flexible split conduit 11 Be sure the rubber moisture seal is in place on the connectors This will help to prevent moisture from entering the connection and affecting system operation 12 Be sure to apply a good brand of moisture displacement lubricant to the connectors prior to connecting them to their associated sensor field device A good product for this application is Super Lube Silicone Dielectric Grease available through M SC Industrial Supply P N 02105658 This will help to prevent moisture from entering the connection and affecting system operation 13 W hen connecting the harness to the vehicle field devi
27. adhered to by installation personnel It is often the service personnel who must address and correct issues that arise from installation errors Filename Blue Bird_Owner amp Service M anual Page 19 of 42 Date 03 04 05 Hadley 2851 Prairie S W Grandville M 49418 Phone 616 530 1717 www hadley products com The below illustrates the system pneumatic layout DRIVER S SIDE TAG CURB TAG AXLE DRIVE AXLE CURB SIDE Naa TO AIR SUPPLY a HADLEY SMART AIR MANAGEMENT SYSTEM S A M S CURB 1 FOUR 4 CORNER CONTROL SYSTEM FRONT AXLE W PRESSURE SENSOR 2 SELF LEVELING SYSTEM S L S MODULE SHOWN OUT OF POSITION MINUS MOUNTING RAILS amp BRACKET Comment Leaks associated with the tubing and pneumatic components are often the direct result of improper installation procedures Hadley engineering has created separate documentation to serve as a guide for installation of the pneumatic hardware However there is no guarantee these installation procedures and associated document recommendations are adhered to by installation personnel Itis often the service personnel who must address and correct issues that arise from installation errors Summary This completes the operation and service information regarding the SAMS manifold and valve assemblies The information contained in this document is not intended to be all inclusive but to serv
28. and individual component functions will enhance their understanding of overall system operation It will also ensure a properly installed and serviced system thereby optimizing system performance and obtain the intended system functionality Filename Blue Bird_Owner amp Service M anual Page 24 of 42 Date 03 04 05 Hadley 2851 Prairie S W Grandville M 49418 Phone 616 530 1717 www hadley products com SAMS Pressure T ransducer This document is written to provide a basic understanding of the pressure transducer used on the Smart Air M anagement System SAM S This discussion will create a basic understanding of the transducer functionality The knowledge gained by understanding this information will provide installation and service personnel with information to diagnose and repair related system problems V Theory of O peration This device is used by the system ECU electronic control unit to monitor a specific pneumatic pressure within the Smart Air M anagement System The transducer is of a highly reliable ceramic design utilizing a variable capacitance sensing element and state of the art integrated circuitry to provide a linear voltage signal proportional to the applied system pressure The Blue Bird system consists of five 5 transducers in total The pressure transducers are installed at appropriate locations throughout the pneumatic system thereby enabling the respective capacitive sensing element to be direct
29. ation seas NENA GENE EEN Eegen 12 Valve SOR VI CHING EE 14 M anifold Error C ode Identification maana 16 Electrical T SUNG aaa BKA BANANA GAGA 17 SAM S Inclination Sensor nA NAAAEAARAAAANA 20 E ege CH BEE 20 Sensor MOU ma WEE 21 Sensor Test Procedure aman ANAKAN NANANA 22 SAMSbreesuretranscdhuter esrtegeueuguaeggeper eeuusrgeeergoresdekgeeebtdegERgedeEEEuEeEEEEEEEEEbECeK Eege deugeg 24 Theory of O paa EE 24 Transducer M ounting zngeseseme ses deeee ue deeg See danaa indana nannan iniaa NAANA SANAAA daian deeg 25 Transducer Test d Ee 26 SAMS Height Sensori EE 28 Theory of O POF at ON scesieiniesivinricntngunccvinsnsevntuitneapaacsveessndincesdunieeananisuaninasnvana niiensiaviblatssegssevedenes 28 Sensor M UNUNG sis isuceinstdcnsianiiace cdsuesvcsssuiuviieaudvasiaiusdeladocedsonatuva castes ucvaniiseietsitecnsssaunvepsssdeaameiiies 29 Sensor KN 30 Filename Blue Bird_Owner amp Service M anual Page 3 of 42 Date 03 04 05 Hadley 2851 Prairie S W Grandville M 49418 Phone 616 530 1717 www hadley products com Front A arniess Lay nnan 32 Rear Harness Layout a nn NAAANINAG 33 Pneumatic KE AA AA AA AE 34 Appendix A SAMS Wiring Harness Installation Precautions 35 Appendix B SAMS Pneumatic Installation Precautions aaa 37 Appendix C SAMS Height Sensor Arm amp Linkage Installation ana 39 Filename Blue Bird Owner amp Service M anual Page 4 of 42 Date 03 04 05 Hadley 2851 Prairie S W Grandville M
30. center position At the 45degrees of rotation the voltage on the sensor s blue wire would be approximately 4 4V DC to 4 6VDC The sensor arm travel in the clockwise direction would be typical in a decrease situation from the normal vehicle ride height As the sensor arm moves counter clockwise the voltage on the blue wire would continue to decrease until the sensor arm reaches approximately 45degrees of rotation from the center position At the 45degrees of rotation the voltage on the sensor s blue wire would be approximately 0 4V DC to 0 6VDC Filename Blue Bird_Owner amp Service M anual Page 29 of 42 Date 03 04 05 Hadley 2851 Prairie S W Grandville M 49418 Phone 616 530 1717 www hadley products com The sensor arm travel in the counter clockwise direction would be typical in an increase situation from the normal vehicle ride height It is important to clarify that the sensor only monitors the ride height and provides feedback to the ECU through only 90degrees of movement In other words from the center position a change in the ride height of 45degrees to 45degrees of sensor arm movement provides a signal to the ECU Movement either above or below this range provides no additional feedback to the ECU Therefore it is important to install the sensor correctly to obtain the correct linkage arm inclination see SAM S Height Sensor Arm amp Linkage Installation procedure outlined in Appendix C Improper linkage installatio
31. ces i e sensors switches etc be sure the connector is properly orientated by the connector s keying mechanism and that the connectors are fully inserted so the latching mechanism is fully engaged This will help to ensure a positive electrical connection allowing for correct ECU monitoring and control Filename Blue Bird_Owner amp Service M anual Page 36 of 42 Date 03 04 05 Hadley 2851 Prairie S W Grandville M 49418 Phone 616 530 1717 www hadley products com 14 Be sure to seal any holes which may have been created for routing and installation of the ECU harness connectors if required with an off the shelf expanding foam A good product for this application is Federal Process Corporation Work Saver Expanding Foam available through M SC Industrial Supply P N 36913622 Filename B lue Bird_Owner amp Service M anual Page 37 of 42 Date 03 04 05 Hadley 2851 Prairie S W Grandville M 49418 Phone 616 530 1717 www hadley products com Appendix B SAMS Pneumatic Installation Precautions 1 Be sure the air supply provides sufficient pressure to allow for proper system operation typically 90 130psi Pressures excessively above or below this range can affect system performance and can result in incorrect ride height 2 If an existing air reservoir is to be used for providing the source air supply be sure to tap into the source at some point above the bottom of the tank M oisture settles to the bottom of the tan
32. distance and make note The example provided in step 1 would have the rebound travel of 4 to be the greater of the two distances 3 Using the table below select the lever length needed based on the largest distance noted in the above example The prior example defined the largest direction of movement to be 4 rebound In the left most column find 4 of suspension travel Go across the rows and in the right most column select the actual lever length needed The example provided would require a 6 length sensor arm with the 4 of maximum suspension travel Height Sensor Arm Selection Table J ounce or Rebound Actual Maximum Lever Length Suspension Travel Needed 2 0 3 0 2 2 4 0 2 4 4 0 2 6 4 0 2 8 5 0 3 0 5 0 3 2 5 0 3 4 5 0 3 6 6 0 3 8 6 0 4 0 6 0 4 2 7 0 4 4 7 0 4 6 7 0 4 8 8 0 5 0 8 0 5 2 8 0 5 4 9 0 5 6 9 0 5 8 9 0 6 0 9 0 Filename Blue Bird Owner amp Service M anual Page 40 of 42 Date 03 04 05 Hadley 2851 Prairie S W Grandville M 49418 Phone 616 530 1717 www hadley products com 4 Attach the height sensor to the vehicle frame by adhering to precautions outlined in the appropriate section of this document The section provides useful information to prevent possible damage to the height sensor during the installation and servicing process 5 Unless otherwise specified the height sensor arm should be ori
33. e SAM S system and detect electrical problems Should the ECU detect a problem a visual indication will be given by flashing the suspension indicator located on the user interface panel in such a manner as to represent a two or three digit code The first number of the code can be identified by counting the first series of flashes It will be followed by a short pause and then provide a second series of flashes to represent the second number of a two digit code if applicable the second number will be followed by another short pause and then provide a third series of flashes to represent a three digit code For example one flash followed by a short pause and then three additional flashes would illustrate a code 13 In the event of more than one detected problem the ECU will cycle through this process and flash an individual error code for each identified problem The ECU will continue to flash the error code s until the problem s have been corrected Once the problem s are corrected the ECU will proceed to turn off the suspension indicator A list of potential error codes and their probable cause are as follows e 11 eleven Rear Drive Driver Height Sensor 12 twelve Rear Drive Curb Height Sensor 13 thirteen Rear Drive Driver Pressure T ransducer 14 fourteen ECU Sensor Reference V oltage 21 twenty one Rear Drive Curb Pressure T ransducer 22 twenty two Rear Tag Driver Pressure T ransducer 23 twenty three Rear T ag
34. e as a reference document Time spent by installation and service personnel to better acquaint themselves with this information will provide a greater understanding of system operation and the associated servicing procedures Filename Blue Bird_Owner amp Service M anual Page 20 of 42 Date 03 04 05 Hadley 2851 Prairie S W Grandville M 49418 Phone 616 530 1717 www hadley products com SAMS Inclination Sensor This document is written to provide a basic understanding of the inclination sensors used on the Smart Air M anagement System SAMS This discussion will create a basic understanding of the sensor functionality The knowledge gained by understanding this information will provide installation and Service personnel with information to diagnose and repair related system problems Theory of O peration The sensor is used by the system ECU electronic control unit to detect the angle change of the vehicle chassis from the true horizontal position using reliable hall effect technology It enables the ECU to monitor the vehicle chassis angle and determine if adjustment to the horizontal position of either axis is necessary during the self leveling mode of operation The two sensors are mounted on the top surface of the SAMS manifold assembly One sensor monitors the X axis side to side and the second sensor monitors the Y axis front to back of the vehicle chassis The sensor contains three wires red black white
35. e is not applied the self leveling process will not be allowed to occur by the system ECU Once the self leveling mode is activated the LED located above the SET pushbutton will flash as a visual indication the mode is active The ECU will first adjust the vehicle Y axis and then the X axis Once the leveling process is complete the LED located above the SET pushbutton will be ON continuously Filename Blue Bird_Owner amp Service M anual Page 9 of 42 Date 03 04 05 Hadley 2851 Prairie S W Grandville M 49418 Phone 616 530 1717 www hadley products com Once activated the system will remain in the self leveling mode until either the SET pushbutton is depressed a second time or the vehicle parking brake is released Note The following illustration summarizes the level find and self leveling operation with relation to the respective user interface pushbuttons and indicators Level Indicator Light Y or Long Axis Press once to activate the SLS System and initiate the Solid Green RV is near level Level Find M ode Flashing Green Adjustment is possible and within range Flashing Amber M arginal conditions possible self level Solid Amber Excessive slope Self leveling may not be possible Indicator flashes as system levels the coach The indicator stays on after leveling is done Level Indicator Light X or Short Axis Solid Green RV is near le
36. eak is present air bubbles will be created in the applied solution If either of these conditions is noticed the vehicle should be inspected and the cause of the problem corrected These conditions could eventually cause premature compressor failure due to overheating from excessive cycling The compressor would attempt to maintain system pressure that would continuously fluctuate due to the ECU trying to compensate for the system problem Filename Blue Bird_Owner amp Service M anual Page 14 of 42 Date 03 04 05 Hadley 2851 Prairie S W Grandville M 49418 Phone 616 530 1717 www hadley products com When it becomes necessary to either raise or lower the vehicle ride height the ECU will energize the respective manifold valve coil s by applying 12VDC With 12V DC applied to the coil current flows through the windings and creates an electro magnetic field This magnetic field is stronger than the existing spring pressure that holds the valve plunger against the valve seat within the manifold The strength of the magnetic field will cause the plunger to move inside the body of the valve assembly compressing the spring and opens the respective fill or exhaust passage within the manifold This will allow system air to either fill or exhaust the associated airbag This action will either raise or lower the vehicle depending upon which valve has been energized When the desired position has been reached the ECU will r
37. ed on the user control panel will flash The flashing sequence indicates the error code associated with the detected problem See the respective system error code section of this document for additional information regarding fault identification and associated problem description Filename Blue Bird Owner amp Service M anual Page 42 of 42 Date 03 04 05
38. emove power from the valve coil s the internal spring will decompress expand and the plunger will once again seal off the associated manifold port This sealing action will sustain the desired ride height until system adjustment once again becomes necessary Valve Servicing The valves are secured to the body of the manifold by using four 4 10 32NF X socket head cap screws SHCS with lock washers and are factory tightened to 30in Ibs of torque Care must be taken when removing or replacing the valve assembly so as not to lose the mounting hardware or the O ring that is installed in the respective manifold surface machined groove The O ring and mounting hardware create a positive seal between the valve assembly mounting plate and the valve mounting surface of the manifold Note If the O ring is lost or damaged or the valve is not properly attached to the manifold by using all of the previous mentioned hardware an external leak will occur and a source for contamination to enter the manifold is created The valve body and coil are independent assemblies and can be replaced individually if necessary The coil only can be replaced by the following procedure 1 Disconnect the associated valve wiring harness 2 Remove the power wire from the harness connector and remove the ground wire SHCS 3 Insert an appropriately sized flat head screwdriver into the hook section of the clip groove located on the top of the valve assembly 4
39. ented in the horizontal position center of sensor travel and facing to the front of the vehicle 6 Attach the associated linkage to the sensor arm and the vehicle frame It is important to note the point where the linkage attaches to the height sensor arm should lead the connection point at the vehicle frame by a distance that is approximately 20 of the sensor arm length See the illustration below for more details on the proper lever arm inclination dimension LA1 for the linkage based on the required sensor arm Height Sensor Arm amp Linkage Installation DIAGRAM A TABLE A Sensor Arm Lever Arm Front of lt Length Inclination Vechicle SAL LADD 27 0 60 SAL AY 0 30 Sensor Arm 2 00 Horizontal a R Position 6 CH Ee AN Reet a ae ee EN 60 Perpendicular Rod Line a HUT ais NOTE LAI is 20 of SAL EES Frame Note The inclination of the linkage is important to ensure the continuous monitoring of the suspension throughout its travel jounce and rebound The sensor monitoring range is typically 45 degrees from the center position 90 degrees of rotation total Points outside of this range will not provide any further changes in the feedback signal to the system ECU Also if the sensor arm is too short and the inclination angle is incorrect itis possible to over extend the height sensor This would result in damage to the senso
40. entire vehicle to the normal ride height when the speed exceeds 10M PH or the operator momentarily depresses the raise pushbutton located on the user interface Once the mode has been deactivated the ECU will automatically turn off the LED Entire lowering of the vehicle ride height can be chosen by the operator of the vehicle to further decrease the clearance between the vehicle and the ground to a mechanical minimum distance in order to allow additional clearance for an overhead obstruction This mode may be selected by depressing and holding the lower pushbutton for approximately 3 seconds with the vehicle speed at 5M PH or less The pushbutton must be held until the LED located above the pushbutton remains on continuously At that point the pushbutton can be released and the mode will remain active Once the mode becomes active the system ECU will lower the entire vehicle to the lowest possible mechanical position and the LED located above the pushbutton on the user interface will remain on as a visual indication the mode is active The ECU will automatically return the entire vehicle to the normal ride height when the speed exceeds 5M PH or the operator momentarily depresses the raise pushbutton located on the user interface Once the mode has been deactivated the ECU will automatically turn off the LED Tag Dump M ode This mode of operation is used to control the air pressure in the tag axle of the vehicle This mode allows
41. face will be on the left side of the driver seat on the main operator control counsel The angle sensors will be mounted on the vehicle frame in a 4 point configuration rear 2 front 2 The wire harnessing will provide the necessary connections for providing DC electrical control power and ground to the SAMS system from a suitable vehicle power source provide the necessary height sensor connectors provide the pneumatic manifold wiring interface provide the necessary color coded wires for vehicle hardware integration and provide the electrical connections for the user interface Functionally the system will provide the following modes of Operation i e normal raised lowered tag dump and self leveling This information is further defined in the following sections Normal M ode This mode of operation occurs automatically when the vehicle is operated at speeds of 20M PH and above It requires no further interaction by the vehicle operator The ECU monitors the feedback signals from the height sensors during normal vehicle operation Should any of the four signals dictate that the vehicle is above or below the programmed ride height the ECU will energize the necessary manifold valve coils to either fill or exhaust the respective air bag s to bring the vehicle back to the correct vehicle ride height The system will stay in this mode of operation unless conditions are satisfied to enter the other modes of Operation as defined in the following
42. he speed exceeds 10M PH or the operator momentarily depresses the lower pushbutton located on the user interface Once the mode has been deactivated the ECU will automatically turn off the LED Lowered M ode This mode of operation is used to decrease the clearance between the underside of the vehicle frame and the ground surface The vehicle operator must select this mode of operation and choose to partially lower or entirely lower the whole vehicle A separate action must be performed by the vehicle operator in order to initiate either function of the lowered mode of operation This action is further discussed in the following two paragraphs Filename Blue Bird_Owner amp Service M anual Page 6 of 42 Date 03 04 05 Hadley 2851 Prairie S W Grandville M 49418 Phone 616 530 1717 www hadley products com Partial lowering of the vehicle ride height can be chosen by the operator of the vehicle to decrease the clearance between the vehicle and the ground to a predetermined position in order to clear an overhead obstruction This mode may be selected by momentarily depressing the lower pushbutton located on the user interface with the vehicle speed at 10M PH or less Once the mode is selected the system ECU will lower the entire vehicle to a predetermined position and the LED located above the pushbutton on the user interface will blink as a visual indication the mode has been activated The ECU will automatically return the
43. hese conditions would generate an alarm The alarm would be displayed by a fault code on the vehicle user panel by flashing the suspension indicator However voltages that are above 0 4V DC and below the supply reference from the ECU fall within the normal operating parameters of the sensor and are not subject to alarm If a sensor is suspected to be faulty a test can be performed to validate its functionality The following step by step process outlines that test procedure 1 Disconnect power from the system prior to performing any repairs or component removal replacement This will prevent any possible short circuits that could result in component or supply voltage damage 2 Disconnect the respective sensor 3 wire connector from the vehicle wiring harness 3 Remove the two mounting screws with washers that secure the sensor to the manifold surface 4 Remove the sensor from the vehicle 5 Place the sensor on a clean and level surface V erify the surface to be used is level by using an appropriate level across the X and Y planes of the surface 6 Orientate the sensor in such a manner as to have the wires on your left hand side and facing towards you refer to the earlier illustration Obtain a DC voltage power supply capable of supplying a regulated 5V DC supply Connect the red lead from the power supply to the red wire on the sensor connector Connect the black lead from the power supply to the black wire on
44. inates to enter the manifold Should this occur itis possible for debris to collect on the plunger face seal or cause the plunger to stick open thereby affecting system operation and performance Should an inflation valve plunger become contaminated or the plunger stick open it is possible for air to leak past the plunger and continuously fill the associated air bag This would cause a corner of the vehicle to continuously creep upwards while the vehicle is in operation and result in the SAMS system constantly making corrections to lower the affected corner of the vehicle Should an exhaust valve plunger become contaminated or the plunger stick open it is possible for air to leak past the plunger and continuously exhaust the associated air bag This would cause a corner of the vehicle to continuously creep downwards and result in the SAM S system constantly making corrections to raise the affected corner of the vehicle It should be noted that this condition would be most noticeable after the vehicle has not been in operation for a period of time because the respective corner of the vehicle would lean Note An external leak such as a loose air fitting defective air bag or tube leak could also cause the vehicle to lean when not in operation for a period of time External leaks can be detected by squirting a Suitable inspection solution i e soap water amp glycerin mix onto the external system components If an air l
45. ition 16 Slowly raise the rear of the sensor sensor end on your right hand side while keeping the front of the sensor the sensor end on your left hand side with the wires in contact with the horizontal flat surface The voltage on the voltmeter should steadily decrease until an approximate angle of 10degrees is reached With the rear of the sensor at this angle the voltage on the voltmeter should read approximately 0 5VDC Any further increase in the angle beyond this point will not result in any further decrease in the feedback voltage Note The voltage should decrease steadily with no loss in the voltage signal no erratic changes should occur or the voltage should not read OVDC or 5VDC at any point throughout the angle of movement 17 If the sensor fails to test as described then replacement will be necessary Note When replacing the sensor or upon re installation in the event of a satisfactory test be sure to adhere to the installation instructions mentioned earlier in this document It is imperative for the sensor to be level to mounting surface parallel to the respective manifold surface and be properly secured This will ensure proper monitoring by the system ECU and system functionality during the self leveling mode of operation Summary This completes the basic installation operation and troubleshooting information on the inclination sensor Time spent by installation and service personnel to better underst
46. k and the ports in this location are best suited for drain valves 3 Be sure the source air supply is as clean and dry as possible The air supply should be equipped with an industry standard filtration system 4 Mount the SAMS system manifold higher than the lowest point in the air system to reduce the possibility of catching air system contamination 5 Mount the SAM S air tank if applicable so as not to interfere with the suspension or frame movement The tank should be orientated as such in order to place the drain valve s facing toward the ground beneath the vehicle 6 Be sure to use either Teflon tape or a heavy duty thread sealing compound on any field installed air fittings prior to installation if the fittings are not already provided with sealant on the threads Either sealant type can be purchased from any local hardware store Note If the use of Teflon tape or a heavy duty thread sealing compound is required care should be taken with its application so as not to obstruct the air passage in the fitting or clog the manifold port screens 7 The tubing should be installed to adhere to the following routing and connections a Manifold Supply Inlet Port Supply Line from Vehicle Source b Manifold Drive Outlet Ports Driver Side Air Bags c Manifold Curb Outlet Ports Passenger Side Air Bags d Manifold Exhaust Ports Route and secure tubing to vehicle undercarriage 8 Route the tubing away from engine exhaust manifold
47. larify the sensor only monitors the angle of change and provides feedback to the ECU through 20degrees of movement In other words from the center position an angle increase of 10degrees or decrease of 10degrees will provide a change in the feedback signal to the ECU Movement beyond this range will provide no additional change in the feedback signal Therefore it is important to mount the manifold assembly as level as possible in both the X and Y directions to optimize the sensor feedback capability SAMS Inclination Sensor Side View 2 7 MAX White Wire Signal ta ECU Black Wire Ground Red Wire GSVIC Power gt Rear of Sensor Raised Angle 10 Bee ECU Signal Voltage z OSVDC 0 Horizontal Position ECU Signal Voltage x 2 5VDC to 2 7VDC 050 F Hk 10 Front of Sensor Raised Angle ECU Signal Voltage z 45VDO 2 75 NOTE rientate sensor as illustrated for testing Wires on your left and facing towards you Sensor M ounting The sensors are mounted to the required surface by using two 8 32NF X 12 Long socket head cap screws SHCS and flat washers and are factory tightened to 20in Ibs of torque The top surface of the sensor is checked and verified to be parallel with the respective X and Y surface of the manifold The manifold in turn needs to be level with the vehicle in the respective vehicle X and Y axis After
48. le M 49418 Phone 616 530 1717 www hadley products com Self L eveling M ode This mode of operation is two fold First it can be used to evaluate perspective vehicle parking areas to ensure the vehicle can be adjusted to be within leveling parameters for maximizing occupant comfort level find mode Second once a suitable parking area is found it is used to automatically level the suspension of the vehicle even though the parking area may be an uneven surface self leveling mode The following paragraphs further explain this mode of operation The SLS pushbutton located on the right hand area of the user interface is used to initiate the self leveling mode This pushbutton serves as the ON switch to begin the entire self leveling process When the SLS pushbutton is depressed and the vehicle is operating at slow speed typically 5M PH or less the ECU will begin the level find mode This is an evaluation process whereas the system ECU will look at the signals received from the four height sensors and the signals from the two inclination sensors The height sensors will provide the ECU with real time information on the location of each corner of the vehicle in reference to the normal ride height At the same time the inclination sensors will provide real time information to the ECU on the location of the X and Y axis of the vehicle in relation to the reference horizontal position The ECU will perform the necessary co
49. lead of the multimeter to the black lead in the wiring harness connector of the coil to be tested The display on the multimeter should read approximately 8 to 10 ohms of resistance If the display of the multimeter shows zero ohms of resistance the coil is shorted and requires replacement If the display shows an open circuit as indicated by displaying 10L the coil requires replacement as well Note Prior to disconnecting the manifold wiring harness to perform the continuity check be sure power has been removed from the SAMS system ECU This can be accomplished by disconnecting the white wiring harness connector in the vicinity of the manifold assembly This prevents the SAM S system from operating when the engine is not running which could result in unanticipated suspension movement The SAMS system requires 12V DC for proper system operation The ECU uses the 12VDC supplied by a user defined vehicle power source to control the manifold valve coils and also uses the voltage to create an internal 5V DC reference signal This lower voltage provides feedback to the ECU from the system sensors to detect and maintain the vehicle ride height Therefore if the supply voltage is either excessively low typically less than 9 7V DC or excessively high typically 14 8 VDC or above system performance can be adversely affected The multimeter using the DC voltage scale is also a useful tool in checking and verifying the correct supply
50. longer delay will occur and the error code will cycle through each digit again Example An error code of 22 would be represented by two flashes a short pause and two more flashes A longer pause will occur and then the error code 22 would be repeated The ECU will continue cycling through the error code until the problem has been corrected Once the problem is corrected the ECU will automatically turn off the suspension indicator If multiple problems have been detected each error code will be displayed individually The ECU will continuously cycle through all active error codes until the problems are corrected See the below chart for an example of possible error codes The error code number is identified in the far right column and descriptions are provided in the preceding columns SAMS Error Code Info Error Code Number Description 1 Description 2 Open Short ANA 0 Angle Sensor Drive DVR Angle Sensor 1 Angle Sensor Drive Curb Angle Sensor 12 2 Pressure Sensor Drive DVR Pressure Transducer 13 3 V ref Internal Circuit Board Reference 14 4 Pressure Sensor Drive Curb Pressure Transducer 2 5 Pressure Sensor Tag DVR Pressure Transducer 22 6 Pressure Sensor Tag Curb Pressure Transducer 23 ri Inclination Sensor X Axis Inclination Transducer 24 8 Inclination Sensor Y Axis Inclination Transducer 3 9 Angle Sensor Front DVR Angle Sensor 32 10 Angle Sensor Front Curb Angle Sensor 33 11 Pressure Sensor Supply Pressure Transducer 34
51. loss in the voltage signal no erratic changes should occur or the voltage should not read OVDC or 5VDC at any point throughout the test range 18 If the sensor fails to test as described then replacement will be necessary Note When replacing the transducer or upon re installation in the event of a satisfactory test be sure to adhere to the installation instructions mentioned earlier in this document It is important for the transducer threads to be properly sealed with an appropriate sealant in order to be free of air leaks This will ensure proper monitoring by the system ECU and prevent excessive air compressor cycling from the loss of system pressure Summary This completes the basic installation operation and troubleshooting information on the pressure transducer Time spent by installation and service personnel to better understand individual component functions will enhance their understanding of overall system operation It will also ensure a properly installed and serviced system thereby optimizing system performance and obtain the intended system functionality Filename Blue Bird Owner amp Service M anual Page 28 of 42 Date 03 04 05 Hadley 2851 Prairie S W Grandville M 49418 Phone 616 530 1717 www hadley products com SAMS Height Sensor This section is written to provide a basic understanding of the SAM S Height Sensor The content is not intended to be all inclusive but is to provide basic knowledge for
52. ltages that are above 0 4V DC and below the supply reference from the ECU fall within the normal operating parameters of the sensor and are not subject to alarm If a sensor is identified to be faulty a test can be performed to validate its functionality The following step by step process outlines that test procedure 1 Disconnect power from the system prior to performing any repairs or component removal replacement This will prevent any possible short circuits that could result in component or supply voltage damage 2 Disconnect the sensor 3 wire connector from the supplied system wiring harness 3 Disconnect the linkage from the sensor arm 4 Unbolt the sensor from the vehicle frame and remove the sensor 5 Obtain a DC voltage power supply capable of supplying a regulated 5V DC supply 6 Connect the red lead from the power supply to the red wire on the sensor connector 7 Connect the black lead from the power supply to the black wire on the sensor connector 8 Obtain a voltmeter to monitor the DC feedback voltage 9 Connect the red lead of the voltmeter to the sensor blue wire and the black lead of the voltmeter to the sensor black wire 10 Orientate the sensor so the lever arm faces up points to your left and the sensor wiring is to your right 11 Place the sensor in the mid range of its travel 12 Turn on the DC power supply and adjust the voltage to 5V DC if necessary 13 With the sensor arm in the center
53. ly subjected to the air pressure at the desired point The integrated circuitry converts the sensed pressure into a useable electrical signal This electrical signal is detected by the system E CU and is used as one determining factor for achieving the desired system functionality One transducer is used to determine if sufficient system pressure is available to provide for proper SAM S operation This pressure must be within the range of 90 130psi If the pressure is below this range the ECU will illuminate the air pressure indicator located on the user interface to serve as a warning to the vehicle operator of a system air pressure problem The remaining transducers are threaded into the manifold assembly and are used to monitor the pressures in the drive and tag axle air bags specifically named Drive DRV Drive Curb Tag DRV and Tag Curb as stamped on the manifold body near the associated port The system wiring harness connector contains three wires typically orange black blue that interface the system ECU to the sensor The orange wire provides an ECU generated reference voltage typically 5V DC 2 The black wire provides the ground and the blue wire provides the voltage signal back to the ECU This voltage is proportional to the respective system air pressure detected by the transducer Filename Blue Bird_Owner amp Service M anual Page 25 of 42 Date 03 04 05 Hadley 2851 Prairie S W Grandville M 49418 Phone 616 530 17
54. mparisons and determine if the vehicle is capable of being leveled at the particular location The ECU will provide a visual indication of this process to the vehicle operator by turning on the indicator arrows located to the left of the SLS pushbutton The two arrows reference the X and Y axis of the vehicle The top arrow points left to right represents the Y vehicle axis long axis front to back and the bottom arrow points top to bottom represents the X vehicle axis short axis side to side The arrows will be flashing or ONT solid and be either an amber or green color The four combinations of light status and color can be interpreted by the following information e Solid Green the vehicle is near level e Flashing Green Adjustment is possible and within range e Flashing Amber Adjustment is marginal e Solid Amber Self Leveling M ay Not Be Possible E xcessive Slope Once activated the system will remain in the level find mode until the SLS pushbutton is depressed a second time W hen the level find mode is complete the operator can proceed to initiate the self leveling part of the process To initiate this process the SLS pushbutton must first be depressed this may have already been performed if the vehicle operator used the level find mode the vehicle must be stopped placed in park the parking brake applied and then the SET pushbutton is depressed Note If the parking brak
55. n can result in sensor damage and result in improper system control and incorrect vehicle ride height Arm Position Height Control Senor Max Up 4 4VDC to 4 6VDC N SS NG Hotel Use 1 4 20 button head KAN cap screws for mounting sensor SC N Torque to 60 80 in lbs Blue wire Signal to ECU Arm Position Center E Black Wire 24VDC to 2 6VDC D C Ground Red Wire Power from ECU Reference VA Note 2 Sensor mounting surface ge must be flat for flush mounting of sensor body Arm Position Max Down DAVID to 0 6VDC Sensor M ounting Care must be taken when mounting the sensor to the vehicle frame The mounting surface must be flat so the sensor body is mounted flush to the vehicle surface Itis recommended that two button head cap screws Ja 20 thread be used to mount the sensor to the vehicle and the screws tightened to 60 80 inch lbs of torque If the frame mounting holes are a through hole non threaded a nylon style of locknut is also recommended to maintain the tightening torque It is important to clarify the above mounting information otherwise distortion or breakage of the sensor body is possible when tightening the mounting hardware Not having the sensor flush can distort the sensor body resulting in breakage as well as over tightening can crack the housing Damage to the senor will result in improper system control and incorrect vehicle ride height Filename Blue Bird
56. name Blue Bird_Owner amp Service M anual Page 7 of 42 Date 03 04 05 Hadley 2851 Prairie S W Grandville M 49418 Phone 616 530 1717 www hadley products com Note The following illustration summarizes the raise lower and tag dump operation with relation to the respective user interface pushbuttons and indicators RAISE Button TAG DUMP Button Press once to raise the rear of Press once to exhaust the air in the RV for increased bumper the rear tag axle to low clearance The Raise light pressure The led indicator is flashes Speed lt 20 M PH on while this axle is in dump mode Speed lt 20 M PH or Press button again to refill tag Press and hold button until axle to normal pressure The raise light remains on to raise led indicator is off while this entire vehicle for increased axle is normal mode ground clearance Speed lt 10 M PH Press LOWER switch once to return vehicle to normal height Raise light off SUSPENSION LOWER Button AIR PRESSURE Press once to partially lower the vehicle to decrease overall height Speed lt 10 M PH The L ower light flashes or Press and hold button until the lower light remains on to lower the vehicle to lowest overall height Speed lt 5 MPH Press RAISE switch once to return to normal height L ower light off Filename Blue Bird_Owner amp Service M anual Page 8 of 42 Date 03 04 05 Hadley 2851 Prairie S W Grandvil
57. ould occur or the voltage should not read OVDC or 5VDC at any point throughout the range of movement 16 If the sensor fails to test as described then replacement is necessary Note When replacing the sensor or upon re installation in the event of a satisfactory test be sure to adhere to the installation instructions mentioned earlier in this document Proper installation is necessary to prevent damaging the sensor Proper sensor operation is necessary to provide accurate feedback to the ECU for correct vehicle height control Summary This completes the basic installation operation and troubleshooting information on the height control sensor All information contained in this document is of equal importance and should not be ignored Time spent by installation and service personnel to better understand component operation will ensure a properly installed and serviced system thereby providing correct system operation Filename Blue Bird_Owner amp Service M anual Page 32 of 42 Date 03 04 05 Page 1 of 2 RV INTERFACE SAMS Front Harness L ayout 616 530 1717 NOTES 1 ALL CONNECTORS 2 HARNESS MUST C SPECIFICATION ES 1043 3 ALL CONNECTORS TO HAV
58. position the voltage on the blue wire should read approximately one half of the 5VDC supply i e 2 4V DC to 2 6V DC Filename Blue Bird_Owner amp Service M anual Page 31 of 42 Date 03 04 05 Hadley 2851 Prairie S W Grandville M 49418 Phone 616 530 1717 www hadley products com 14 Slowly rotate the senor arm in the clockwise direction and observe the voltage reading on the voltmeter As the sensor arm is rotated clockwise the voltage on the blue wire should increase until approximately 45degrees of rotation from center is reached At the 45degrees of rotation the voltage should read approximately A AN DC to 4 6VDC If rotation continues beyond this point no additional increase in voltage should be observed Note The voltage should increase steadily with no loss in the voltage signal no erratic changes should occur or the voltage should not read 5VDC or OVDC at any point throughout the range of movement 15 After verifying the voltage increase slowly rotate the sensor arm counter clockwise As the sensor arm is rotated counter clockwise the voltage on the blue wire should decrease until approximately 45degrees of rotation from center is reached At the 45degrees of rotation the voltage should read approximately 0 4VDC to 0 6VDC If rotation continues beyond this point no additional decrease in voltage should be observed Note The voltage should decrease steadily with no loss in the voltage signal no erratic changes sh
59. r and cause faulty system operation Filename Blue Bird_Owner amp Service M anual Page 41 of 42 Date 03 04 05 Hadley 2851 Prairie S W Grandville M 49418 Phone 616 530 1717 www hadley products com 7 Route the SAMS wiring harness as required adhering to the precautions outlined in Appendix A of this document This section provides useful information to prevent possible damage to the wiring harness and or connectors during the installation process and vehicle operation 8 Connect the respective wiring harness 3 pin connectors to each height control sensor Refer to the wiring harness installation precautions outlined is Appendix A for connector identification and moisture prevention procedures 9 Route and install the air tubing adhering to the precautions outlined in Appendix B of this document This section provides useful information to prevent damage to the nylon tubing and precautions to help in the prevention of air leaks 10 After the installation of the required components the system is ready for power up and test Start the vehicle to supply power and air to the SAMS system The system should go through a self leveling process and automatically adjust to the desired ride height 11 Verify the operation of the system by selecting the desired mode of operation as defined in the respective section of this manual 12 At any time should a problem be detected by the SAMS system ECU the suspension indicator locat
60. ressure transducer 9 Fabricate and install an electrical test connector onto the pressure transducer using the same wire colors and pin configurations as the original wiring harness connector 10 Connect the red lead from the power supply to the orange wire on the transducer test connector 11 Connect the black lead from the power supply to the black wire on the transducer test connector Filename Blue Bird_Owner amp Service M anual Page 27 of 42 Date 03 04 05 Hadley 2851 Prairie S W Grandville M 49418 Phone 616 530 1717 www hadley products com 12 Obtain a voltmeter to monitor the feedback voltage 13 Connect the red lead of the voltmeter to the transducer test connector blue wire signal and the black lead of the voltmeter to the transducer test connector black wire 14 Turn on the DC power supply and adjust the voltage to 5V DC if necessary 15 With no pressure applied to the transducer the voltmeter should read approximately 0 5V DC 16 Refer to the chart illustrated on the previous page of this document page 25 17 Slowly increase the pressure on the regulator outlet in 10psi increments Record the voltmeter readings at 10psi 20psi 30psi 40psi 50psi 60psi 70psi 80psi 90psi 100psi 110psi 120psi and if possible 130psi 140psi and 150psi The voltmeter should read 2 of the voltage listed in the chart at these respective pressures Note The voltage should increase steadily with no
61. s mufflers exhaust pipes catalytic converters and other heat generating components 9 Keep the tubing away from pinch points and sharp and jagged edges to prevent crushing pinching or puncturing of the tubing Tubing that is damaged in this way can reduce air flow and results in poor system performance Air brake tubing is recommended for system installation Parker Hannifin P N PFT 6B Allow sufficient bend radii where applicable to prevent sharp bends and kinks in the tubing The tubing manufacturer recommends a minimum bend radius of 1 1 2 for tubing with an outside diameter O D of 3 8 0 375 Note If a kink should occur during the installation process the tubing must be carefully inspected in the area of the kink for possible permanent damage and or obstruction The kink can weaken the tensile strength of the tubing and create a weak spot where a leak could develop Also the tubing must be free of obstructions which can reduce the amount of airflow and affect system performance Allow sufficient slack in the tubing to prevent damage at points of vehicle horizontal and or vertical movement and deflection This will allow the tubing to move with the vehicle and prevent crushing and or fatiguing of the tubing Note Caution should be taken as not to leave excessive slack which could cause the tubing to become snagged while the vehicle is in motion especially in off road conditions 1 o 1 KA Filename Blue Bird_O
62. stortion or irregularities are present it will be necessary to trim off the damaged end typically is sufficient by using a good tubing cutter Removal of the damaged end and using the appropriate tool will ensure a positive seal between the tubing wall and the inside diameter of the PTC fitting Be sure to check the area with a good leak detection solution after pressurizing the system to ensure that no leak is present If a bubbling of the inspection solution is present it may be necessary to replace the PTC fitting as well Install the tubing into the fitting compression fittings A Slide the fitting nut over the end of the tubing threaded end facing the fitting making sure the insert is in place inside the fitting B Insert the tubing inside the fitting and push down as far as possible C Secure the nut to provide a positive seal between the insert the tubing and the nut Install the tubing into the fitting manifold fittings Simply push the hose completely into the fitting until it locks This style of fitting is of a push to connect PTC design When properly installed the tubing will not pull from the fitting unless the release mechanism is depressed A fter completing the installation and verifying system operation the entire air system should be inspected for leaks utilizing a suitable leak detection solution This may include a soap water and glycerin mix Oatey All Purpose Leak Detector or Nu Calgon Gas Leak
63. the manifold is properly mounted and secured in the designated vehicle location connect the sensor wiring harness connectors The X axis connector will typically be of a female configuration while the Y axis connector will typically be of a male configuration This interface is an assembly poka yoke making it impossible to connect the sensor to the wrong harness connector Additional poka yoke Filename Blue Bird_Owner amp Service M anual Page 22 of 42 Date 03 04 05 Hadley 2851 Prairie S W Grandville M 49418 Phone 616 530 1717 www hadley products com measures have been taken to color code the center wire of the vehicle wiring harness connector as well The typical vehicle wiring harness center wire color code configuration is as follows Wiring Harness Blue Wire X axis inclination sensor Wiring Harness Violet Wire Y axis inclination sensor Note Prior to connecting the wiring harness to the sensor connectors be sure to apply a good brand of moisture displacement lubricant to the connectors This will help prevent moisture from entering the connections and affecting system operation due to the low current and voltage application of the sensor Sensor T est Procedure The ECU monitors the system and can identify voltages that are below 0 4V DC short to ground broken wire disconnected harness connector etc or voltages equal to the supply reference short to supply voltage Voltages associated with t
64. vel SUSPENSION Flashing Green Adjustment AIR PRESSURE is possible and within range Flashing Amber M arginal conditions possible self level Solid Amber Excessive slope Self leveling may not be possible Press once to activate the Self Leveling process Press once again to switch the self leveling off Note Parking brake must be applied for self leveling adjustments to occur Filename Blue Bird_Owner amp Service M anual Page 10 of 42 Date 03 04 05 Hadley 2851 Prairie S W Grandville M 49418 Phone 616 530 1717 www hadley products com Visual Indicators As explained in earlier sections of this document if either the raised mode rear only or lowered mode partial is selected the respective pushbutton LED will flash Additionally if the raised mode entire vehicle lowered mode lowest possible mechanical position or the tag dump mode is selected the respective LED will be ON continuously The user interface also contains a suspension and an air pressure indicator Should the system ECU detect a problem the suspension light will blink in such a manner as to identify an error code associated with the fault Additionally should the system air pressure fall below 90psi the system ECU will illuminate the air suspension indicator Note The following section provides more information regarding the specific system error codes Error Codes The ECU has the ability to monitor th
65. voltage and that a good system and manifold ground is present The system ground and manifold ground are provided through separate ground wires Refer to the SAMS wiring diagrams to determine the power and ground wires associated with the system Note DC voltage is polarity sensitive Therefore the multimeter red lead should be connected to positive system power 12VDC and the black lead connected to negative system ground See the following pages for samples of the SAMS system schematics Filename Blue Bird_Owner amp Service M anual Page 18 of 42 Date 03 04 05 Hadley 2851 Prairie S W Grandville M 49418 Phone 616 530 1717 www hadley products com The below illustrates the two system wiring harness schematics DESCRIPTION REV BY REV DATI R EGR 3560 WAS X2959 REV A JLW 5 26 2004 NOTE MAIN HARNESS TO BE INSTALLED IN DRIVER S SIDE TRAY VICE SWITCH DRIVE CURB Comment Open and short circuits in the wiring harness are often the direct result of improper installation procedures Hadley engineering has created separate documentation to serve as a guide for installation of the electrical and pneumatic hardware However there is no guarantee these installation procedures and associated document recommendations are
66. wner amp Service M anual Page 38 of 42 Date 03 04 05 Hadley 2851 Prairie S W Grandville M 49418 Phone 616 530 1717 www hadley products com 12 Secure the tubing every few inches typically 6 12 with nylon straps 13 T he nylon straps should be snug enough to hold the tubing in the desired position but not over tightened which can otherwise distort the tubing and restrict air flow 14 To prevent leaks be sure the tubing end is cut square and the tubing is free from nicks cuts abrasions and any contaminates such as rust proofing at least 3 4 inches from the squarely trimmed end prior to attaching the tubing to the fittings Notel A tubing cutter with a sharp blade is recommended to properly cut the tubing end A good tubing cutter can be purchased from either MSC Industrial Supply P N 79814323 or from Parker Hannifin Corporation P N PTC It is not recommended to use any other device for cutting the tubing If an improper tool is used uneven cuts jagged edges or distortion of the tubing can result thereby affecting the ability for the tubing to fully engage the fitting The tubing must fully engage the fitting and be free from damage for air leak prevention Note2 If circumstances arise which requires disconnecting the tubing from a PTC fitting careful examination of the tubing end is required It is possible for the tubing end to become distorted and irregularities may be present in the tubing wall If any di

Smart Air Management - Wanderlodge Owners Group

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