BENDIX BW2910 User's Manual
Contents
1. deactivate the electrical system in a manner that safely removes all electrical power from the vehicle 6 T 10 11 Never exceed manufacturer s recommended pressures Never connect or disconnect a hose or line containing pressure it may whip Never remove a component or plug unless you are certain all system pressure has been depleted Use only genuine Bendix brand replacement parts components and kits Replacement hardware tubing hose fittings etc must be of equivalent size type and strength as original equipment and be designed specifically for such applications and systems Components with stripped threads or damaged parts should be replaced rather than repaired Do not attempt repairs requiring machining or welding unless specifically stated and approved by the vehicle and component manufacturer Prior to returning the vehicle to service make certain all components and systems are restored to their proper operating condition For vehicles with Automatic Traction Control ATC the ATC function must be disabled ATC indicator lamp should be ON prior to performing any vehicle maintenance where one or more wheels on a drive axle are lifted off the ground and moving Log on and Learn from the Best On line training that s available when you are 24 71 365 Visit www brake school com BW2910 2013 Bendix Commercial Vehicle Systems LLC a member of the Knorr Bremse Group 7 13 All Rights R2. Bendix Technical Help Line 1 800 AIR BRAKE 251 42 3 4 5 6 12 Modulator 1 DTC 43 3 4 5 6 12 Modulator 2 DTC 3 4 5 6 12 Modulator 3 DTC 1 800 247 2725 option 2 1 Mon Fri 8 a m 6 p m ET Take Action Recommended in Step 3 Troubleshooting Checks To Make First Then Do This _ Verify that the number of WSSs found in Step 1 match the stored configuration _ Verify that the sensor wiring has no visible damage or has no shorts to ground or battery _ Verify proper tire inflation _ Check that the WSS s face is touching the exciter ring tone ring face _ Verify 950 1950 ohms across sensor leads Reading ohms _ While turning the wheel at 0 5 revs sec verify a minimum of 0 25 AC volts across the sensor leads Reading volts x Out of range go to the Bendix BW2453 WSS inspection guide _ Verify correct tire size as desired _ Verify proper tire inflation _ Verify correct number of exciter ring teeth on both sides of the axle _ Verify that the ECU has the proper tire size settings _ Verify that the wiring and connections are free from damage _ With ignition power to the trailer measure voltage between the Ignition Power pin and the Ground pin of the ECU harness connector Repeat voltage measurement with Brake Lamp Power pin and Ground pin of the ECU harness connector The operating range of the module is 8 0 16 0 VDC Verify that voltage
3. measurements are equal to vehicle voltage at both ends of the harness Readings Ignition pin Vdc Brake Lamp Power pin Vdc Incorrect Then investigate the harnesses and connectors If the proper voltage is measured at the ECU harness connector and no corrosion or damage is found on the wiring connectors or ECU then replace the module Go to Step 4 If the BC is 7 1 or 7 2 clear the active BC and cycle the power Check the BC again and if the same code is returned replace the module Go to Step 4 _ Check the following pins if the system is equipped with more than one modulator Bendix TABS 6 Premium ECU only 3 0 to 8 0 Ohms across the Hold Common connector pins 3 0 to 8 0 Ohms across the Exhaust Common pins 6 0 to 16 0 Ohms across the Hold Exhaust pins No continuity should be measured from any modulator pin to ground Vbat is not measured from any modulator connector pin Modulator connector wiring and pins should not be damaged or corroded main ECU wire harness 18 Pin Pin A Brake Lamp Power Pin E Ground Looking into the system s O00000 00000 connector J120 OOOO Ob Bendix TABS 6 Premium Pin 6 Ignition Power Pin 12 Brake Lamp Power Pin 18 Ground e Clear the Blink Codes BCs e Is the same BC back Looking into the system s main ECU wire harness 5 Pin Connector TABS 6 Standard _ Yes see the Service Data sheet Troubleshooting section and or
4. Diagnostic Unit TRDU tool for less than 6 seconds GENERAL SAFETY GUIDELINES A WARNING PLEASE READ AND FOLLOW THESE INSTRUCTIONS TO AVOID PERSONAL INJURY OR DEATH When working on or around a vehicle the following general precautions should be observed at all times 1 Park the vehicle on a level surface apply the parking brakes and always block the wheels Always wear safety glasses Stop the engine and remove ignition key when working under or around the vehicle When working in the engine compartment the engine should be shut off and the ignition key should be removed Where circumstances require that the engine be in operation EXTREME CAUTION should be used to prevent personal injury resulting from contact with moving rotating leaking heated or electrically charged components Do not attempt to install remove disassemble or assemble a component until you have read and thoroughly understand the recommended procedures Use only the proper tools and observe all precautions pertaining to use of those tools If the work is being performed on the vehicle s air brake system or any auxiliary pressurized air systems make certain to drain the air pressure from all reservoirs before beginning ANY work on the vehicle If the vehicle is equipped with a Bendix AD IS air dryer system or a dryer reservoir module be sure to drain the purge reservoir Following the vehicle manufacturer s recom mended procedures
5. contact the Bendix Tech Team Pin B Ignition Power _ No follow the into the wire actions above for harness any other remaining connector BCs 18 Pin Connector TABS 6 Premium Looking Pin 3 is MOD2 Common Pin 4 is MOD3 Common Pin 9 is MOD2 exhaust Pin 10 is MOD3 exhaust Pin 15 is MOD2 Hold Pin 16 is MOD3 Hold Looking into Modulator Connector Pins Pin 1 Release Pin 2 Common Pin 3 Hold _ Verify the correct ABS configuration using blink codes or other diagnostic tool s If needed reset to the default ABS configuration and power up to initiate an auto configuration Take Action Recommended in Step 3 ae Troubleshooting Checks To Make First Then Do This _ Check the modulator wiring and also look for corrosion of its connector pins _ At the modulator harness no continuity should be measured from any modulator pin to ground Vbat is not measured from any modulator connector pin _ Verify proper modulator valve activation during the system start up Chuff Test with brake pressure applied at power up and or using diagnostic tool The wiring to the modulator may be reversed _ Refer to Action A and check for proper function and configuration of the WSS _ For a code of 11 1 check for damaged or corroded connectors and wiring Clear DTCs if no problems are found If a DTC returns upon ignition ON replace the module Go to Step 4 _ For a code of 11 2 verify correct ABS configura
6. ding with active Blink Codes BCs For example seven blinks pause two blinks 7 2 There is a long pause before any further BCs To Obtain Inactive DTCs Switch off and re apply the ignition power Then depress and release the stop lamp switch or the brake pedal four 4 times within 15 seconds to display the BCs of all of the inactive diagnostic trouble codes Record the active and recurring intermittent BCs found here Open This For each BC use the table Equivalent Diagnostic to the right and find the Blink Codes BC trouble Codes DTCs ee pecs een ded d Description and Take the recommen ed action code Action Code to use Open this document and follow Shown Below the troubleshooting checks for that code i i i O 05 O SL WSS Signal The actions shown will typically resolve the issue SR WSS Signal 0 5 13 SAL WSS Signal See the Service Data Sheet for complete 0 5 13 SAR WSS Signal troubleshooting information and for any 5 Q SL Tire Configuration SR Tire Configuration SAL Tire Configuration SAR Tire Configuration 13 13 other BCs not listed Only go to Step 4 in cases where the troubleshooting suggested and any actions the technical help line s recommend do not resolve the issue 5 13 Modulator 2 Configuration Error 13 Modulator 3 Configuration Error 4 1 7 7 4 7 7 9 4 Modulator Common Any Electronic Control Unit ECU o Any Trailer Mounted ABS Indicator Lamp
7. eserved
8. o the lamp auxiliary device e 12V is not measured at ABS indicator lamp lead Verify the following at the ABS indicator lamp lead OO0O0O0OO e No continuity of the ABS indicator lamp lead to ground e No continuity from the ABS indicator lamp lead to any other ECU pin s e Replace repair the ABS indicator lamp wiring or components as required Reference Documents Bendix Service Data sheets SD 13 4767 Bendix TABS 6 Trailer ABS Module standard amp premium controllers Visit www bendix com for free downloads of Service Data Sheets Warranty Policies or to download order copies of the SD sheets Step 4 Replace the ECU If it is still under warranty coverage file a claim and include If necessary a the returned part b a copy of this document and c a print out of the Bendix ACom Diagnostics report VIN Claim Vehicle Make Model Mileage To Reset the DTCs Using To Reset the DTCs Using Bendix a Bendix TRDU ACom Diagnostics Alternate Method to Reset the DTCs e Depress and release the stop lamp switch or brake pedal five 5 times within 15 seconds of switching the ignition ON to reset the e Use the Reset Diagnostic Codes feature diagnostic trouble codes There will be a BC of 1 1 will be displayed if all trouble codes were cleared but if any trouble codes remain the ABS light will remain on e Reset Diagnostic Trouble Codes by holding a magnet over the reset of the Bendix Trailer Remote
9. ol Bendix TABS 6 Standard and Premium Trailer ABS Controller Checklist e This checklist only takes a few minutes Follow all General Safety Guidelines see back page R Front R Middle R Rear Axle WSS Axle WSS Axle WSS _ Additional amp Front Modulator _ TABS 6 _ Additional ABS Tra fet Valve Controller Modulator r r Valve L Front _ L Middle Axle WSS Axle WSS Axle WSS What equipment does the trailer have Record the total of checked boxes Wheel Speed Sensors WSSs Modulator Valves MVs What Blink Code BC numbers are shown as active or intermittent We recommend that you use a PC laptop with associated RP1210 harnesses etc to connect to the trailer The computer will need the Bendix ACom Diagnostics software version 6 5 and above For a free software download of Bendix ACom Diagnostics visit www bendix com Look up active and recurring intermittent Diagnostic Trouble Codes DTCs and their equivalent BCs Record the active and recurring intermittent BCs found using ACom Diagnostics here If a PC with ACom Diagnostics is not available read the box below How to retrieve active DTCs when ACom Diagnostics is not available 1 Wait at least two seconds after switching the ignition ON 2 Depress and release the stop lamp switch or the brake pedal three 3 times within 15 seconds after switching the ignition ON 3 After a pause of five 5 seconds the ECU will begin respon
10. tion using blink codes or other diagnostic tool s _ If needed reset the default ABS configuration and power up to initiate auto configuration See Action E e Clear the Blink _ Check for corroded damaged wiring or connectors between the ECU Codes BCs and J1587 Diagnostic 00000 e Is the same BC _ Verify the following at the 18 pin ECU harness connector back 4 l aa 12V is not measured at the J1587 Diagnostic pins _ Yes see the e No continuity of the J1587 diagnostic pins to ground Looking into Premium TABS 6 Service Data sheet Module Wire Harness ECU Troubleshooting Connector Measure section and or l _ Verify the following at the J1587 4 pin Diagnostic connector contact the Bendix E Tech Team e 12V is not measured at J1587 Diagnostic pins Pin 6 Ignition Power Pin 18 ground and Pin 12 e No continuity of the J1587 diagnostic pins to ground Brake Light Power to _ No follow the Pin 1 J1587 and actions above for Pin 7 J1587 any other remaining e Replace repair J1587 Diagnostic wiring or components as required BCs e No continuity of the J1587 diagnostic pins to any other ECU pin s e No continuity of the J1587 diagnostic pins to any other ECU pin s _ Check for corroded damaged wiring or connectors between the ECU and the ABS indicator lamp At the ECU harness connector Pin D of the 5 pin or Pin 5 of the 18 pin verify the following e Continuity of the ABS indicator lamp wiring t
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