GENERAL INFORMATION SECTION GI CONTENTS
Contents
1. IGNITION SWITCH ON or START DDL2 communication line J1962 DATA LINK CONNECTOR DLC II FOR CONSULT II AND GST ECM AIR BAG DIAG NOSIS SENSOR UNIT 9 1011 1213141516 L p H To each diagnosed system Ss SGI084A INSPECTION PROCEDURE If the CONSULT II cannot diagnose the system properly check the following items Symptom Check item CONSULT II cannot access any system CONSULT II DLC power supply circuit Terminal 9 and ground circuit Terminal 13 For detailed circuit refer to MIL amp Data Link Connectors Wiring Diagram in EC section CONSULT II DDL cable CONSULT II cannot access individual system Other Systems can be accessed tem Power supply and ground circuit for the control unit of the system For detailed circuit refer to wiring diagram for each system Open or short circuit between the system and CONSULT II DLC For detailed circuit refer to wiring diagram for each system Gl 40 CONSULT II program card Check the appropriate CONSULT II program card for the sys QG16DE QG18DE IDENTIFICATION INFORMATION Model Variation BDGALBF EGA BDGARBF EEA RS5F70A High BDGARUF EEA BATARBF EEA BDGALUF EGA BATALBF EGA BATARUF EEA BATALUF EGA SR20DE BBYARBF2. MODIFICATIONS PRECAUTIONS GENERAL INFORMATION E SECTION G i CONTENTS Supplemental Restraint System SRS AIR BAG and SEAT BELT PRE TENSIONER Precautions for NATS seeeeeeeeeeeeeeerrreeeeeereernne Precautions for Super Lock System General Precautions nsnnnnnnnanaanaaaaananan ennenen Precautions for Multiport Fuel Injection System or Engine Control Module Precautions for Three Way Catalyst Precautions for Turbocharger Precautions for Engine Oils Precautions for Fuel Precautions for Air Conditioning HOW TO USE THIS MANUAL HOW TO READ WIRING DIAGRAMS Sample Wiring Diagram EXAMPL b T To Toj1 o a ee Wiring Diagram Codes Cell Codes HOW TO CHECK TERMINAL How to Probe Connectors s How to Check Enlarged Contact Spring of LEE Waterproof Connector Inspection Terminal Lock Inspection 0 0 0 eee eeeeeee HOW TO PERFORM EFFICIENT DIAGNOSIS FOR AN ELECTRICAL INCIDENT 00 00nnaoeeaeoneeeeeeeaeeee 24 Work FOW me DTE 24 Incident Simulation Tests 25 Circuit Inspection eeeeeeeeeeeeeeeeeeeseeeeeeseeeseeeseees 29 HOW TO FOLLOW TROUBLE DIAGNOSES 35 How to Follow Test Groups in Trouble Diagnoses 35 CONSULT II
3. illustrations Illustrations are provided as visual aids for work procedures For example symbol indicated in the left upper portion of each illustration corresponds with the symbol in the flow chart for easy identification More precisely the procedure under the CHECK POWER SUPPLY outlined previously is indi cated by an illustration EX 4 Symbols used in illustrations Symbols included in illustrations refer to measurements or procedures Before diagnosing a problem familiarize your self with each symbol Direction mark Refer to CONNECTOR SYMBOLS on GI 15 GI 36 HOW TO FOLLOW TROUBLE DIAGNOSES How to Follow Test Groups in Trouble Diagnoses Cont d Example Type B Example CHECK GAUGE OPERATION 1 Turn ignition switch ON 2 Connect terminals B Fuel C Temp and ground with wire for less than 10 seconds CHECK POWER SUPPLY CIRCUIT 1 Turn ignition switch ON 2 Check voltage between combination meter terminal 15 and ground Battery voltage should exist Fuel gauge water temperature gauge 3 Check operation of gauge SEL865U RE Gauge should move smoothly to full scale OK or NG OK p GOTO2 NG p gt Check the following on 10A fuse No 7 located in the fuse block J B Harness for open or short between fuse and combination meter CHECK GROUND CIRCUIT FOR FUEL TANK GAUGE UNIT Check har
4. known good ground 4 With SW1 open check for continuity continuity short is between fuse terminal and SW1 point A no continuity short is further down the circuit than SW1 5 Close SW1 and disconnect the relay Put probes at the load side of fuse terminal and a known good ground Then check for continuity continuity short is between SW1 and the relay point B no continuity short is further down the circuit than the relay 6 Close SW1 and jump the relay contacts with jumper wire Put probes at the load side of fuse terminal and a known good ground Then check for continuity continuity short is between relay and solenoid point C no continuity check solenoid retrace steps GI 30 HOW TO PERFORM EFFICIENT DIAGNOSIS FOR AN ELECTRICAL INCIDENT Circuit Inspection Cont d Voltage check method 1 Remove the blown fuse and disconnect all loads i e SW1 open relay disconnected and solenoid dis connected powered through the fuse 2 Turn the ignition key to the ON or START position Verify battery voltage at the B side of the fuse ter minal one lead on the B terminal side of the fuse block and one lead on a known good ground 3 With SW1 open and the DMM leads across both fuse terminals check for voltage voltage short is between fuse block and SW1 point A no voltage short is further down the circuit than SW1 4 With SW1 closed relay and solenoid disconnected and the DMM leads across both fuse terminals
5. 0 The voltage value is based on the body ground If high resistance exists in the switch side circuit caused by a single strand terminal 1 does not detect battery voltage ECM does not detect the switch is ON even if the switch does turn ON Therefore the ECM does not supply power to light up the lamp Case 2 TERMINAL 2 Lamp TERMINAL 1 Monitoring Switch Ground control of the switch FUSE Q to light up the lamp operation ON OFF Battery LL 1 2 O O0 d kl kel ECM V T PJ kel Short FUSE blows Short Lamp stays ON Short Lamp stays ON Short No problem Open Inoperative lamp Open Inoperative lamp Same as the switch ON Open Inoperative lamp Open Inoperative lamp High resistance See below Single strand Input output voltage chart Pin Item Condition Voltage In case of high resistance No value V such as single strand V 1 Lamp Switch Approx 0 Battery voltage ON Inoperative lamp OFF Battery Battery voltage voltage 2 Switch Switch Approx 0 Higher than 0 ON Approx 4 Example OFF Approx 5 Approx 5 The voltage value is based on the body ground If high resistance exists in the switch side circuit caused by a single strand terminal 2 does not detect approx OV ECM does not detect the switch is ON even if the switch does turn ON Therefore the ECM does not control ground to light up the lamp SGI849 A GI 34 Example Type A
6. CHECKING SYSTEM 39 Function and System Application 39 Nickel Metal Hydride Battery Replacement 39 Checking Equipment eee 39 CONSULT II Data Link Connector DLC Circuit 40 IDENTIFICATION INFORMATION 41 Model Variation treat utentes 41 Identification Number 43 Ell Le E 45 Wheels and Tres 45 LIFTING POINTS AND TOW TRUCK TOWING 46 Preparation AEN 46 B ard on BLA 46 Garage Jack and Safety Stand 47 2 pole Lift ieriiiimimmmmri i Niii W mimrinkmuui i uiuiutINA N rm 48 Tow Truck TOWING ceeeeeeeeeeeeeeeeeeeseeeeeeeeeneeeenees 49 TIGHTENING TORQUE OF STANDARD BOLTS 50 ISO 15031 2 TERMINOLOGY LIST 51 ISO 15031 2 Terminology List 51 MODIFICATIONS APPLIED FROM SJN P11U 0526000 Any of the possibilities See Vehicle Identification Number Arrangement OUTLINE OF MODIFICATIONS GENERAL e Various running changes on engine control system electrical systems body etc Note that the introduc tion timing of some of the running changes may not be entirely in line with the above mentioned VIN e For some running changes the VIN Vehicle Identification Number is mentioned to specify the timing of the change implemention The VIN No may not be an exact number there is an error range
7. E EGI T Turbo CD20T Model F 5 speed manual transaxle Z H CVT W H CVT M6 B LOW U HIGH L Left hand drive R Right hand drive A 2 wheel drive models Gl 42 IDENTIFICATION INFORMATION Identification Number Vehicle identification number 4 oi C Vehicle identification plate Sciath ee YX Air conditioner specification p Ux ven NGIO46 VEHICLE IDENTIFICATION NUMBER ARRANGEMENT For Europe s SJN B F A P11 lt E le serial number i Stopgap no meaning Destination U Europe Model A 2 wheel drive Engine type F QG16DE engine E QG18DE engine C SR20DE engine D CD20T engine Body type B 4 door Sedan F 5 door Hatchback T Wagon Manufacturer SJN Nissan Passenger vehicle GI 43 IDENTIFICATION INFORMATION Identification Number Cont d IDENTIFICATION PLATE NISSAN EUROPE N V A A Type approval number B Vehicle identification number chassis number C Gross vehicle weight GVW D Gross combination weight GCW E Gross axle weight Front F Gross axle weight Rear G Vehicle type specification H Body colour code Trim colour code J Model TYP FARBE POLST NGIO11 ENGINE SERIAL NUMBER QG16DE QG18DE SR20DE engine CD20T engine engine Front V Fon NGI060 MANUAL TRANSAXLE NUMBER H CVT NUMBER RS5F32A and RS5F70A REOFO6A NGIO61 NGIO48 GLA4 IDENTIFICATION INFORMATION Dimen
8. EEA BBYARUF EEA BBYALBF EGA BBYALUF EGA Lo Lo RS5F70A High Lo RS5F70A Lo High BBYARBZ EEA REOFO6A BBYALBZ EGA BBYALUZ EGA BBYALUW EGA CD20T High BBYARUZ EEA REOFO6A M6 High BBYARUW EEA Lo BVCARBF TEA RS5F32A BVCALBF TGA BVCALUF TGA QG16DE FDGARBF EEA High BVCARUF TEA L RS5F70A FDGALBF EGA FDGALUF EGA QG18DE SR20DE QG18DE FATALBF EGA O High FDGARUF EEA Lo FATARBF EEA RS5F70A High FATARUF EEA FATALUF EGA FBYALBF EGA FBYARUF EEA FBYALUF EGA FBYALBZ EGA FBYALUZ EGA L FBYARBZ EEA REOFO6A High FBYARUZ EEA REOFO6A M6 High FBYARUW EEA FBYALUW EGA FVCALBF TGA L FVCARBF TEA RS5F32A High FVCALUF TGA TATALBF EGA TATALUF EGA SR20DE TBYALBF EGA TBYALUF EGA e FVCARUF TEA Lo TATARBF EEA RS5F70A High TATARUF EEA Lo RS5F70A High Lo TBYARBZ EEA REOF06A High TBYARUZ EEA TBYALBZ EGA TBYALUZ EGA TBYARBF EEA REOFO06A M6 High TBYARUW EEA TBYALUW EGA w w w w w w w Sn FBYARBF EEA High ow w w w w w TBYARUF EEA Lo TVCARBF TEA TVCALBF TGA RS5F32A TVCARUF TEA TVCALUF TGA Gl 41 IDENTIFICATION INFORMATION Model Variation Cont d Prefix and suffix designations B DG A L DG QG16DE engine AT QG18DE engine BY SR20DE engine VC CD20T engine B 4 door Sedan F 5 door Hatchback T Wagon B l Standard i RHD models G LHD models
9. pin Do not bend terminal GI 21 HOW TO CHECK TERMINAL CL HA Male terminal Wire SEL270V Do not apply force against the terminal SEL271V SEL272V OK NG SEL273V How to Check Enlarged Contact Spring of Terminal An enlarged contact spring of a terminal may create intermittent signals in the circuit If the intermittent open circuit occurs follow the procedure below to inspect for open wires and enlarged contact spring of female terminal 1 Assemble a male terminal and approx 10 cm 3 9 in of wire Use a male terminal which matches the female terminal 2 Disconnect the suspected faulty connector and hold it termi nal side up 3 While holding the wire of the male terminal try to insert the male terminal into the female terminal Do not force the male terminal into the female terminal with your hands 4 While moving the connector check whether the male termi nal can be easily inserted or not e lf the male terminal can be easily inserted into the female terminal replace the female terminal Gl 22 HOW TO CHECK TERMINAL SEL275V Male connector Female connector Locked terminal m A zz US Unlocked terminal EN Co d Z 2 M ESS Intermittent contact SEL330V Waterp
10. position Continuity exists between terminals 1 and 3 when the switch is in the B position Assembly parts Connector terminal in component shows that it is a harness incorporated assembly Cell code This identifies each page of the wiring diagram by section system and wiring diagram page number GI 13 Number amp HOW TO READ WIRING DIAGRAMS Item Current flow arrow System branch Description Cont d Description Arrow indicates electric current flow especially where the direction of stan dard flow vertically downward or horizontally from left to right is difficult to follow A double arrow lt gt shows that current can flow in either direction depend ing on circuit operation This shows that the system branches to another system identified by cell code section and system Page crossing This arrow shows that the circuit continues to another page identified by cell code The C will match with the C on another page within the system other than the next or preceding pages Shielded line The line enclosed by broken line circle shows shield wire Component box in wave line This shows that another part of the component is also shown on another page indicated by wave line within the system ele Component name This shows the name of a component amp Connector number This shows the connector number The letter shows which harne
11. steps GI 24 HOW TO PERFORM EFFICIENT DIAGNOSIS FOR AN ELECTRICAL INCIDENT Incident Simulation Tests INTRODUCTION Sometimes the symptom is not present when the vehicle is brought in for service If possible re create the conditions present at the time of the incident Doing so may help avoid a No Trouble Found Diagnosis The following section illustrates ways to simulate the conditions environment under which the owner experiences an electrical incident The section is broken into the six following topics Vehicle vibration Heat sensitive Freezing Water intrusion Electrical load Cold or hot start up Get a thorough description of the incident from the customer It is important for simulating the conditions of the problem VEHICLE VIBRATION The problem may occur or become worse while driving on a rough road or when engine is vibrating idle with A C on In such a case you will want to check for a vibration related condition Refer to the illustration below Connectors amp harness Determine which connectors and wiring harness would affect the electrical system you are inspecting Gently shake each connector and harness while monitoring the system for the incident you are trying to duplicate This test may indicate a loose or poor electrical connection Hint Connectors can be exposed to moisture It is possible to get a thin film of corrosion on the connector ter minals A visual inspection may not reveal this wit
12. temperature will be excessively high To prevent this follow the instructions below e Use unleaded gasoline only Leaded gasoline will seriously damage the three way catalyst e When checking for ignition spark or measuring engine compression make tests quickly and only when necessary e Do not run engine when the fuel tank level is low otherwise the engine may misfire causing damage to the catalyst Do not place the vehicle on flammable material Keep flammable material off the exhaust pipe and the three way catalyst Precautions for Turbocharger The turbocharger turbine revolves at extremely high speeds and becomes very hot Therefore it is essential to maintain a clean supply of oil flowing through the turbocharger and to follow all required maintenance instructions and operating procedures e Always use the recommended oil Follow the instructions for proper time to change the oil and proper oil level e Avoid accelerating engine to a high rpm immediately after starting e H engine had been operating at high rpm for an extended period of time let it idle for a few minutes prior to shutting it off Precautions for Engine Oils Prolonged and repeated contact with used engine oil may cause skin cancer Try to avoid direct skin contact with used oil If skin contact is made wash thoroughly with soap or hand cleaner as soon as possible HEALTH PROTECTION PRECAUTIONS e Avoid prolonged and repeated contact with oils partic
13. with CONSULT II Procedure without CONSULT II il Procedure with Generic Scan Tool GST E OBD scan tool Remove key from ignition switch Procedure without CONSULT II or GST Turn ignition switch to LOCK position X 8 A C switch is OFF Turn ignition switch to ON position A C switch is ON 8 Turn ignition switch to START posi tion Turn ignition switch from LOCK to ACC position j UI A el gt HS o Sea Fan switch is ON At any position except for OFF position Fan switch is OFF E 83 Turn ignition switch from ACC to LOCK position Turn ignition switch from LOCK to ON position Apply positive voltage from battery with fuse directly to components Drive vehicle CH um Gei Ze EZ Turn ignition switch from ON to LOCK position Disconnect battery negative cable Si Do not start engine or check with engine stopped Depress brake pedal 2 XE A S Start engine or check with engine run ning Release brake pedal Apply parking brake Depress accelerator pedal 5 Release parking brake Check after engine is warmed up suffi ciently Voltage should be measured with a voltmeter a i op Le Circuit resistance should be measured with an ohmmeter Current should be measured with
14. with Towing Procedure Manual at dealer e When towing with the rear wheels on the ground release the parking brake and move the gearshift lever to neu tral position NISSAN recommends that vehicle be towed with the driving front wheels off the ground as illustrated TOWING A H CVT MODEL WITH FOUR WHEELS ON GROUND Observe the following restricted towing speeds and distances Speed Below 50 km h 30 mph Distance Less than 65 km 40 miles CAUTION Never tow a H CVT model from the rear e backward with four wheels on the ground as this may cause serious and expensive damage to the transaxle TOWING A H CVT MODEL WITH REAR WHEELS RAISED With front wheels on ground Never tow a H CVT model with rear wheels raised with front wheels on ground as this may cause serious and expensive damage to the transaxle If it is necessary to tow it with rear wheels raised always use a towing dolly under the front wheels TOWING POINT Always pull the cable straight out from the vehicle Never pull on the hook at a sideways angle CAUTION Remove the front spoiler when towing the vehicle forward Otherwise the towing device may damage the front spoiler Removable towing hook J Towing hook NGI049 Gl 49 TIGHTENING TORQUE OF STANDARD BOLTS Bolt Tightening torque Without lubricant Grade Bolt size diameter Hexagon head bolt Hexagon flange bolt m
15. 64 Example Male terminal Connector Connector symbol Female terminal Guide Connector symbol Connector SGI363 Description Cont d CONNECTOR SYMBOLS Most of connector symbols in wiring diagrams are shown from the terminal side e Connector symbols shown from the terminal side are enclosed by a single line and followed by the direction mark he UN TS e Connector symbols shown from the harness side are enclosed by a double line and followed by the direction mark e Male and female terminals Connector guides for male terminals are shown in black and female terminals in white in wiring diagrams Gl 15 HOW TO READ WIRING DIAGRAMS Example Harness indication BCM connector M33 a Single line C UNIT O CONNECTOR 109 SB Component indication DISCONNECT SIS A C mode switch connector 4 Double line SGI940 Normally open Normally closed SGI860 Description Cont d e Connector numbers that indicate the harness side are enclosed by a single line e Connector numbers that indicate components are enclosed by a double line SWITCH POSITIONS Switches are shown in wiring diagrams as if the vehicle is in the normal condition A vehicle is in the normal condition when e ignition switch is in the LOCK position doors hood and trunk lid back door are closed pedals are not depre
16. 9 0 7 0 9 62 80 Outer shim Pin bolt Cylinder body 22 31 2 2 3 2 16 23 zm Dust seal Erf Piston seal XO V Piston E rn Nem kg m ft lb i9 N m kg m in Ib SBR364AC e THE SMALL ILLUSTRATIONS show the important steps such as inspection use of special tools knacks of work and hidden or tricky steps which are not shown in the previous large illustrations Assembly inspection and adjustment procedures for the complicated units such as the automatic tran saxle or transmission etc are presented in a step by step format where necessary GI 9 e The following SYMBOLS AND ABBREVIATIONS are used O mum i H HOW TO USE THIS MANUAL Tightening torgue M T Should be lubricated with grease A T Unless otherwise indicated use A C recommended multi purpose P S grease SST Should be lubricated with oil SAE Sealing point Checking point SMJ Always replace after every disas ATF sembly D Apply petroleum jelly D2 Apply ATF Da Select with proper thickness D Adjustment is required OD Service Data and Specifications 25 Left Hand Right Hand EI Left Hand Drive Right Hand Drive 12 Front Rear Manual Transaxle Transmission Automatic Transaxle Transmission Air Conditioner Power Steering Special Service Tools Society of Automotive Engineers Inc Super Multiple Junction Automatic Transmission Fluid Drive range 1st gear Drive range 2nd gear Drive range 3rd gear Drive range 4th gea
17. DTC amp SRT confirma The results of SRT System Readiness Test and the self diag tion nosis status results can be confirmed x Applicable 1 NATS Nissan Anti Theft System Nickel Metal Hydride Battery Replacement CONSULT II contains a nickel metal hydride battery When replacing the battery obey the following WARNING Replace the nickel metal hydride battery with genuine CONSULT II battery only Use of another bat tery may present a risk of fire or explosion The battery may present a fire or chemical burn hazard if mistreated Do not recharge disassemble of dispose of in fire Keep the battery out of reach of children and discard used battery conforming to the local regula tions Checking Equipment When ordering the equipment below contact your NISSAN distributor Tool name Description NISSAN CONSULT II CONSULT II unit and accessories Program card AEDOOB 1 and AENOOA for NATS Refer to the CONSULT II operation manual to confirm the best combination of the tester internal software and the software mentioned above L7 NGIO45 GI 39 NOTE CONSULT II CHECKING SYSTEM Checking Equipment Cont d e The CONSULT II must be used in conjunction with a program card CONSULT II does not require loading Initialisation procedure e Be sure the CONSULT II is turned off before installing or removing a program card CONSULT II Data Link Connector DLC Circuit Example
18. ECK TERMINAL SS Connector SS T pin SGI841 Sectional view Female SEL265V Retainer SEL266V Sectional view Male T pin Male terminal SEL267V How to Probe Connectors Connector damage and an intermittent connection can result from improperly probing of the connector during circuit checks The probe of a digital multimeter DMM may not correctly fit the connector cavity To correctly probe the connector follow the procedures below using a T pin For the best contact grasp the T pin using an alligator clip PROBING FROM HARNESS SIDE Standard type not waterproof type connector should be probed from harness side with T pin e lf the connector has a rear cover such as a ECM connector remove the rear cover before probing the ter minal e Do not probe waterproof connector from harness side Damage to the seal between wire and connector may result PROBING FROM TERMINAL SIDE Female Terminal e There is a small notch above each female terminal Probe each terminal with the T pin through the notch Do not insert any object other than the same type male terminal into female terminal e Some connectors do not have a notch above each terminal To probe each terminal remove the connector retainer to make contact space for probing Male Terminal Carefully probe the contact surface of each terminal using a T
19. ENCE AREA The Reference Area of the wiring diagram contains references to additional electrical reference pages at the end of the manual If connector numbers and titles are shown in the Reference Area of the wiring diagram these connector symbols are not shown in the Connector Area Example Super Multiple Junction Sh SMJ L 1G 1FI1E 1C 18 I Main harness a cop Cu i x lt Engine room harness gF sc v lsckrieg an SE Main harness Engine room harness STARTI G SYSTEM STARTING SYSTEM ER 3 Wiring Diagan O NN ls RI RT SEN ee Check ors NEE o is d o m mm Egon a Gh Joe Check II DI S ET ra SE E less l TEF CD me aw Eigg A j e eann Y 7 Connector Area Reference Area Refer to the electrical reference pages at the end of the manual for the terminal arrangement of the connectors shown here in the Reference Area SGI092A Super multiple junction SMJ In a wiring diagram the SMJ connectors include a letter of the alphabet in the terminal number SMJ connector numbers are shown in the Reference Area of the wiring diagram SMJ termi nal arrangement can be found on the electrical reference pages at the end of the manual For termina
20. HOW TO FOLLOW TROUBLE DIAGNOSES NOTICE Trouble diagnoses indicates work procedures required to diag nose problems effectively Observe the following instructions before diagnosing 1 Before performing trouble diagnoses read the Prelimi nary Check the Symptom Chart or the Work Flow 2 After repairs re check that the problem has been com pletely eliminated 3 Refer to Component Parts and Harness Connector Loca tion for the Systems described in each section for identification location of components and harness con nectors 4 Refer to the Circuit Diagram for Quick Pinpoint Check If you need to check circuit continuity between harness connectors in more detail such as when a sub harness is used refer to Wiring Diagram in each individual sec tion and Harness Layout in EL section for identification of harness connectors 5 When checking circuit continuity ignition switch should be in the LOCK position 6 Before checking voltage at connectors check battery voltage 7 After accomplishing the Diagnostic Procedures and Electrical Components Inspection make sure that all harness connectors are reconnected as they were How to Follow Test Groups in Trouble Diagnoses DA V d INSPECTION START CHECK POWER SUPPLY 1 Turn ignition switch to ON posi tion 2 Check voltage between terminal b and ground Batter
21. MAKE SURE THE CIRCUIT WORKS STEP 6 END SGI838 STEP DESCRIPTION STEP 1 Get detailed information about the conditions and the environment when the incident occurred The following are key pieces of information required to make a good analysis WHAT Vehicle Model Engine Transmission and the System i e Radio WHEN Date Time of Day Weather Conditions Frequency WHERE Road Conditions Altitude and Traffic Situation HOW System Symptoms Operating Conditions Other Components Interaction Service History and if any After Market Accessories have been installed STEP 2 Operate the system road test if necessary Verify the parameter of the incident If the problem can not be duplicated refer to Incident Simulation Tests next page STEP 3 Get the proper diagnosis materials together including POWER SUPPLY ROUTING System Operation Descriptions Applicable Service Manual Sections Identify where to begin diagnosis based upon your knowledge of the system operation and the customer com ments STEP 4 Inspect the system for mechanical binding loose connectors or wiring damage Determine which circuits and components are involved and diagnose using the Power Supply Routing and Har ness Layouts STEP 5 Repair or replace the incident circuit or component STEP 6 Operate the system in all modes Verify the system works properly under all conditions Make sure you have not inadvertently created a new incident during your diagnosis or repair
22. NEW ACRONYM ABBREVIATION Not applicable OLD TERM Three way oxidation catalytic converter system TWC OC system Throttle body TB Throttle chamber SPI body Throttle body fuel injection system TBI system Fuel injection control Throttle position TP Throttle position Throttle position sensor TPS Throttle sensor Throttle position switch TP switch Throttle switch Torque converter clutch solenoid valve TCC solenoid valve Lock up cancel solenoid Lock up solenoid Turbocharger TC Turbocharger Vacuum cut valve dd Vacuum control valve Vacuum cut valve bypass valve WE dud Vehicle speed sensor VSS Vehicle speed sensor Volume air flow sensor VAFS Air flow meter Warm up oxidation catalyst WU OC Catalyst Warm up oxidation catalytic converter system WU OC system ii Warm up three way catalyst WU TWC Catalyst 2 up three way catalytic converter sys WU TWC system eee Wide open throttle position switch WOTP switch Full switch Gl 54
23. an ammeter CHUNIT H CONNECTOR or ECM CONNECTOR GI 38 Release accelerator pedal Pin terminal check for SMJ type ECM and A T control unit connectors For details regarding the terminal arrangement refer to the foldout page zi za DISCONNECT CONSULT II CHECKING SYSTEM Function and System Application Diagnostic Function ENGINE test mode This mode enables a technician to adjust some devices faster and more accurate by following the indications on CONSULT II Work support Self diagnostic Self diagnostic results can be read and erased quickly results Trouble diagnostic Current self diagnostic results and all trouble diagnostic records record previously stored can be read ECU discriminated Classification number of a replacement ECU can be read to pre No vent an incorrect ECU from being installed Data monitor Input Output data in the ECM can be read This mode enables a technician to set operating conditions to DTC work support confirm self diagnosis status results Diagnostic Test Mode in which CONSULT II drives some actua Active test tors apart from the ECMs and also shifts some parameters in a specified range ECM part number ECM part number can be read x x Control unit initialisa All registered ignition key IDs in NATS components can be initia tion lised and new IDs can be registered
24. ange the disassembled parts in accordance with their assembled locations and sequence e Do not touch the terminals of electrical components which use microcomputers such as ECMs Static electricity may damage internal electronic compo nents e After disconnecting vacuum or air hoses attach a tag to indicate the proper connection e Use only the fluids and lubricants specified in this manual e Use approved bonding agent sealants or their equivalents when required e Use tools and recommended special tools where specified for safe and efficient service repairs e When repairing the fuel oil water vacuum or exhaust Systems check all affected lines for leaks e Dispose of drained oil or solvent used for cleaning parts in an appropriate manner GI 5 SGI787 SGl292 PRECAUTIONS Precautions for Multiport Fuel Injection System or Engine Control Module e Before connecting or disconnecting any harness connector for the multiport fuel injection system or ECM Engine Con trol Module Turn ignition switch to LOCK position Disconnect negative battery terminal Otherwise there may be damage to ECM e Before disconnecting pressurized fuel line from fuel pump to injectors be sure to release fuel pressure e Be careful not to jar components such as ECM and mass air flow sensor Precautions for Three Way Catalyst If a large amount of unburned fuel flows into the catalyst the catalyst
25. ant recovery unit any time the air con ditioning system must be discharged Refer to HA section HFC 134a R134a Service Procedure SERVICE PROCEDURES for specific instructions GI 8 HOW TO USE THIS MANUAL e ALPHABETICAL INDEX is provided at the end of this manual so that you can rapidly find the item and page you are searching for e A QUICK REFERENCE INDEX a black tab e g EIA is provided on the first page You can quickly find the first page of each section by mating it to the section s black tab e THE CONTENTS are listed on the first page of each section e THE TITLE is indicated on the upper portion of each page and shows the part or system e THE PAGE NUMBER of each section consists of two letters which designate the particular section and a number e g BR 5 e THE LARGE ILLUSTRATIONS are exploded views See below and contain tightening torques lubri cation points section number of the PARTS CATALOG MICROFICHE or EURO FAST system E g SEC440 and other information necessary to perform repairs The illustrations should be used in reference to service matters only When ordering parts refer to the appropriate PARTS CATALOG Example SEC 440 Pad retainer Upper side a DI 54 64 5 5 6 5 40 47 p Main pin MAIRE Pin boot to sliding portion Inner shim Copper washer af 0 17 20 1 7 2 0 12 14 Pad Sr cide EA Lower side EA a AS Brake hose Gye Air bleeder QV Wi
26. check for voltage voltage short is between SW1 and the relay point B no voltage short is further down the circuit than the relay 5 With SW1 closed relay contacts jumped with fused jumper wire check for voltage voltage short is down the circuit of the relay or between the relay and the disconnected solenoid point C no voltage retrace steps and check power to fuse block GROUND INSPECTION Ground connections are very important to the proper operation of electrical and electronic circuits Ground connections are often exposed to moisture dirt and other corrosive elements The corrosion rust can become an unwanted resistance This unwanted resistance can change the way a circuit works Electronically controlled circuits are very sensitive to proper grounding A loose or corroded ground can drastically affect an electronically controlled circuit A poor or corroded ground can easily affect the circuit Even when the ground connection looks clean there can be a thin film of rust on the surface When inspecting a ground connection follow these rules Remove the ground bolt screw or clip Inspect all mating surfaces for tarnish dirt rust etc Clean as required to assure good contact Reinstall bolt or screw securely Inspect for add on accessories which may be interfering with the ground circuit If several wires are crimped into one ground eyelet terminal check for proper crimps Make sure all of the wires are clean se
27. curely fastened and providing a good ground path If multiple wires are cased in one eyelet make sure no ground wires have excess wire insulation Er ONS Ground Inspection Remove bolt screw Inspect mating surfaces Reinstall bolt screw for tarnish dirt rust etc securely Clean as required to assure good contact SGI853 GI 31 HOW TO PERFORM EFFICIENT DIAGNOSIS FOR AN ELECTRICAL INCIDENT Circuit Inspection Cont d VOLTAGE DROP TESTS Voltage drop tests are often used to find components or circuits which have excessive resistance A voltage drop in a circuit is caused by a resistance when the circuit is in operation Check the wire in the illustration When measuring resistance with ohmmeter contact by a single strand of wire will give reading of 0 ohms This would indicate a good circuit When the circuit operates this single strand of wire is not able to carry the current The single strand will have a high resistance to the current This will be picked up as a slight voltage drop Unwanted resistance can be caused by many situations as follows Undersized wiring single strand example Corrosion on switch contacts Loose wire connections or splices If repairs are needed always use wire that is of the same or larger gauge Measuring voltage drop Accumulated method 1 Connect the voltmeter across the connector or part of the circuit you want to check The positive lead of the voltmeter should be close
28. e working on the vehicle e Before jacking up the vehicle apply wheel chocks or other tire blocks to the wheels to prevent the vehicle from moving After jacking up the vehicle support the vehicle weight with safety stands at the points designated for proper lifting before working on the vehicle These operations should be done on a level surface e When removing a heavy component such as the engine or transaxle transmission be careful not to lose your balance and drop them Also do not allow them to strike adjacent parts especially the brake tubes and master cylinder Gl 4 PRECAUTIONS General Precautions Cont d Turn off ignition switch 4 e Before starting repairs which do not require battery power E Disconnect the negative battery terminal SEF289H e To prevent serious burns Avoid contact with hot metal parts Do not remove the radiator cap when the engine is hot SGI233 e Before servicing the vehicle Protect fenders upholstery and carpeting with appropriate covers Take care that keys buckles or buttons do not scratch paint Seat cover Fender cover SGI234 e Clean all disassembled parts in the designated liguid or sol vent prior to inspection or assembly e Replace oil seals gaskets packings O rings locking washers cotter pins self locking nuts etc with new ones e Replace inner and outer races of tapered roller bearings and needle bearings as a set e Arr
29. et cold enough to demonstrate his complaint Leave the car parked out side overnight In the morning do a quick and thorough diagno sis of those electrical components which could be affected The second method is to put the suspect component into a freezer long enough for any water to freeze Reinstall the part into the car and check for the reoccurrence of the incident If it occurs repair or replace the component WATER INTRUSION The incident may occur only during high humidity or in rainy snowy weather In such cases the incident could be caused by water intrusion on an electrical part This can be simulated by soaking the car or running it through a car wash Do not spray water directly on any electrical components ELECTRICAL LOAD The incident may be electrical load sensitive Perform diagnosis with all accessories including A C rear window defogger radio fog lamps turned on COLD OR HOT START UP On some occasions an electrical incident may occur only when the car is started cold Or it may occur when the car is restarted hot shortly after being turned off In these cases you may have to keep the car overnight to make a proper diagnosis GI 28 HOW TO PERFORM EFFICIENT DIAGNOSIS FOR AN ELECTRICAL INCIDENT Circuit Inspection INTRODUCTION In general testing electrical circuits is an easy task if it is approached in a logical and organized method Before beginning it is important to have all available information o
30. he connector cavity In such cases make an extension of a T pin and probe it from the harness side of the connector Most DMMs have accessory alligator clips Slide these over the probe to allow clipping the T pin for a better contact If you have any difficulty probing a terminal inspect the terminal Ensure you N T pin SRI have not accidentally opened the contact spring or pulled a wire loose Gl 26 HOW TO PERFORM EFFICIENT DIAGNOSIS FOR AN ELECTRICAL INCIDENT Heating test Heat gun Do not heat above 60 C 140 F SGI842 Incident Simulation Tests Cont d Engine compartment There are several reasons a vehicle or engine vibration could cause an electrical complaint Some of the things to check for are e Connectors not fully seated e Wiring harness not long enough and is being stressed due to engine vibrations or rocking e Wires laying across brackets or moving components e Loose dirty or corroded ground wires e Wires routed too close to hot components To inspect components under the hood start by verifying the integrity of ground connections Refer to GROUND INSPEC TION described later First check that the system is properly grounded Then check for loose connection by gently shaking the wiring or components as previously explained Using the wiring diagrams inspect the wiring for continuity Behind the instrument panel An improperly routed or improperly c
31. hout disconnecting the connector If the problem occurs intermittently perhaps the problem is caused by corrosion It is a good idea to disconnect inspect and clean the terminals on related connectors in the system Sensors amp relays Gently apply a slight vibration to sensors and relays in the system you are inspecting This test may indicate a loose or poorly mounted sensor or relay Vibration test Tap gently Bend gently SGI839 Gl 25 HOW TO PERFORM EFFICIENT DIAGNOSIS FOR AN ELECTRICAL INCIDENT Incident Simulation Tests Cont d Possible cause Any probe entering the terminal may enlarge the contact spring opening creating an intermittent signal Intermittent signals through pierced insulation Enlarged Normal Proper crimp Insulation not Wire strands removed missing DEFORMED ENLARGED FEMALE TERMINALS DEFECTIVE INSULATION STRIPPING pulling each wire at the end of Intermittent the connector contact Unlocked terminal Check for unlocked terminals by Hidden by wire seal TERMINAL NOT PROPERLY SEATED SGI840 LES Connector Tester probe 7 SEZ When probing a connector it is possible to enlarge the contact spring opening If this occurs it may create an intermittent signal in the circuit When probing a connector use care not to enlarge the opening The probe of the Digital Multimeter DMM may not fit into t
32. kg m ft lb ft lb in Ib 6 0 i 0 52 3 8 i 4 5 53 8 11 12 22 4T 22 38 41 RE 65 18 20 35 7T 38 62 68 108 11 26 27 51 9T 54 87 101 152 1 Special parts are excluded 2 This standard is applicable to bolts having the following marks embossed on the bolt head Nominal diameter Grade Mark M 6 dl guess 4 T JUS 0 sies 7 Nominal diameter of bolt threads Unit mm Metric screw threads GI 50 ISO 15031 2 TERMINOLOGY LIST ISO 15031 2 Terminology List All emission related terms used in this publication in accordance with SAE J1930 are listed Accordingly new terms new acronyms abbreviations and old terms are listed in the following chart NEW ACRONYM Not applicable NEW TERM ABBREVIATION OLD TERM Absolute pressure sensor 2 ie Air cleaner ACL Air cleaner Barometric pressure BARO TR Barometric pressure sensor BCDD BAROS BCDD BCDD Camshaft position CMP ttt Camshaft position sensor CMPS Crank angle sensor Carburetor CARB Carburetor Charge air cooler CAC Intercooler Closed loop CL Closed loop Closed throttle position switch CTP switch Idle switch Clutch pedal position switch CPP switch Clutch switch Continuous fuel injection system CFI system ia Continuous trap oxidizer sy
33. l arrangement of these connectors refer to SUPER MULTIPLE JUNCTION SMJ electrical reference page at the end of the manual GI 19 HOW TO READ WIRING DIAGRAMS Wiring Diagram Codes Cell Codes Use the chart below to find out what each wiring diagram code stands for Code Section Wiring Diagram Name Code Section Wiring Diagram Name AAC V EC IACV AAC Valve ILL EL Illumination ABS BR Anti lock Brake System INJECT EC Injector ACL SW EC Accelerator Position Switch INT L EL Interior Spot and Trunk Room ADJRES EC Adjustment Resistor Lamps A C HA Manual Air Conditioner KS EC Knock Sensor A CCUT EC Air Conditioner Cut Control LOAD EC Load Signal ACC SW EC Accelerator Switch FC LKUP EC ee Converter Clutch Solenoid A T AT Automatic Transmission LOAD EC Load Signal AIM El Headlamp Aiming Control MAFS EC Mass Air Flow Sensor APS EC Accelerator Position Sensor AIRREG EC _ IACV Air Regulator MAIN EC ala EH AT C EC AIT Canio METER EL Speedometer Tachometer Temp AUDIO EL Audio and Fuel Gauges BACK L EL Back up Lamp MI EC Malfunction Indicator BUZZER EL Warning Buzzer MIRROR EL Door Mirror CHARGE EL Charging System NATS EL Nissan Anti Theft System CKPS EC Crankshaft Position Sensor NLS EC Needle Lift Sensor CHIME EL Warning Chime 02S EC Oxygen Sensor CMPS EC Camshaft Position Sensor PGC V EC EVAP Caniste
34. lamped harness can become pinched during accessory installation Vehicle vibration can aggravate a harness which is routed along a bracket or near a screw Under seating areas An unclamped or loose harness can cause wiring to be pinched by seat components such as slide guides during vehicle vibra tion If the wiring runs under seating areas inspect wire routing for possible damage or pinching HEAT SENSITIVE The owner s problem may occur during hot weather or after car has sat for a short time In such cases you will want to check for a heat sensitive condition To determine if an electrical component is heat sensitive heat the component with a heat gun or equivalent Do not heat components above 60 C 140 F If incident occurs while heating the unit either replace or properly insulate the component Gl 27 HOW TO PERFORM EFFICIENT DIAGNOSIS FOR AN ELECTRICAL INCIDENT Freeaing test na AS Water in connector SGI843 Water intrusion test SGI844 Electrical load test A C Rear win dow derdh SY ger Light switch SGI845 Incident Simulation Tests Cont d FREEZING The customer may indicate the incident goes away after the car warms up winter time The cause could be related to water freezing somewhere in the wiring electrical system There are two methods to check for this The first is to arrange for the owner to leave his car overnight Make sure it will g
35. mber with an alphanumeric reference 1A 5B etc indicates that the connector is an SMJ connector The open circle shows that the splice is optional depending on vehicle appli Optional splice eaten Splice The shaded circle shows that the splice is always on the vehicle Page crossing This arrow shows that the circuit continues to an adjacent page The A will match with the A on the preceding or next page EES E The dotted lines between terminals show that these terminals are part of the same connector Option abbreviation This shows that the circuit is optional depending on vehicle application Relay This shows an internal representation of the relay For details refer to EL sec tion STANDARDIZED RELAY ee ee Connectors Wire color This shows that the connector is connected to the body or a terminal with bolt or nut This shows a code for the color of the wire B Black BR Brown W White OR Orange R Red P Pink G Green PU Purple L Blue GY Gray Y Yellow SB Sky Blue LG Light Green CH Dark Brown DG Dark Green When the wire color is striped the base color is given first followed by the stripe color as shown below Example L W Blue with White Stripe le Option description Switch This shows a description of the option abbreviation used on the page This shows that continuity exists between terminals 1 and 2 when the switch is in the A
36. n the system to be tested Also get a thorough understanding of system operation Then you will be able to use the appropriate equipment and follow the correct test procedure You may have to simulate vehicle vibrations while testing electrical components Gently shake the wiring harness or electrical component to do this OPEN A circuit is open when there is no continuity through a section of the circuit SHORT There are two types of shorts When a circuit contacts another circuit and causes the e SHORT CIRCUIT normal resistance to change e SHORT TO GROUND d a circuit contacts a ground source and grounds the TESTING FOR OPENS IN THE CIRCUIT Before you begin to diagnose and test the system you should rough sketch a schematic of the system This will help you to logically walk through the diagnosis process Drawing the sketch will also reinforce your working knowledge of the system Inspection for opens V Voltage check FUSE BLOCK N C RELAY SS ATA JE swi SOLENOID E e OPEN am OPEN B C DMM Sw2 Continuity check SGI846 Continuity check method The continuity check is used to find an open in the circuit The Digital Multimeter DMM set on the resis tance function will indicate an open circuit as over limit OL no beep tone or no ohms symbol Make sure to always start with the DMM at the highest resistance level To help in understanding the diagnosis of open circuit
37. nd NATS igni tion key ID registration refer to CONSULT II operation manual for NATS Therefore CONSULT II NATS software program card and operation manual must be kept strictly confidential to main tain the integrity of the anti theft function e When servicing NATS trouble diagnoses system initialisa tion and additional registration of other NATS ignition key IDs it may be necessary to re register original key identifi cation Therefore be sure to obtain all keys from vehicle owner A maximum of four key IDs can be registered into NATS Precautions for Super Lock System Locking the driver s door or front passenger s door with the key or remote control will lock all doors and activate the Super Lock System The Super Lock System is designed to prevent theft as it can only be released when a front door is unlocked using a key or remote control This means none of the door locks can be operated from the inside using the door lock knob when the Super Lock System is activated General Precautions e Do not operate the engine for an extended period of time without proper exhaust ventilation Keep the work area well ventilated and free of any flammable materials Special care should be taken when handling any flammable or poisonous materials such as gasoline refrig erant gas etc When working in a pit or other enclosed area be sure to properly ventilate the area before working with hazardous materials Do not smoke whil
38. ness continuity between fuel tank gauge unit terminal 2 and ground Continuity should exist KI Check continuity between combination meter terminal 23 and ground Continuity should exist SGI975 1 Work and diagnostic procedure Start to diagnose a problem using procedures indicated in enclosed test groups 2 Questions and required results Questions and required results are indicated in bold type in test group The meaning of are as follows a Battery voltage 11 14V or approximately 12V b Voltage Approximately 0V Less than 1V 3 Symbol used in illustration Symbols included in illustrations refer to measurements or procedures Before diagnosing a problem familiarize your self with each symbol For symbols refer to CONNECTOR SYMBOLS GL15 and Je to Symbols Signifying Mea surements or Procedures 4 Action items Next action for each test group is indicated based on result of each question Test group number is shown in the left upper portion of each test group GI 37 HOW TO FOLLOW TROUBLE DIAGNOSES How to Follow Test Groups in Trouble Diagnoses Cont d Key to symbols signifying measurements or procedures Symbol Symbol explanation Symbol explanation DISCONNECT CONNECT Check after disconnecting the connec tor to be measured Check after connecting the connector to be measured Insert key into ignition switch Procedure
39. of approx 50 cars GI 2 A NATS NISSAN Anti Theft System SGI916 PRECAUTIONS Observe the following precautions to ensure safe and proper servicing Supplemental Restraint System SRS AIR BAG and SEAT BELT PRE TENSIONER The Supplemental Restraint System Air Bag and Seat Belt Pre tensioner used along with a seat belt help to reduce the risk or severity of injury to the driver and front passenger in a frontal collision The Supplemental Restraint System consists of air bag modules located in the center of the steering wheel and on the instrument panel on the passenger side seat belt pre tensioners a diagnosis sensor unit warning lamp wiring har ness and spiral cable If the vehicle is equipped with side air bag as the Supplemental Restraint System the side air bag used along with the seat belt helps to reduce the risk or severity of injury to the driver and front passenger in a side collision The side air bag consists of air bag modules located in the outer side of front seats satellite sensor diagnosis sensor unit which is one of components of air bags for a frontal collision wiring harness warning lamp which is one of components of air bags for a frontal collision WARNING e To avoid rendering the SRS inoperative which could increase the risk of personal injury or death in the event of a collision which would result in air bag inflation all maintenance mu
40. r Overdrive 2nd range 2nd gear 2nd range 1st gear 1st range 2nd gear 1st range 1st gear e The UNITS given in this manual are primarily expressed as an SI UNIT International System of Unit and alternatively expressed in the metric system and in the yard pound system Example of data Tightening torque 59 78 N m 6 0 8 0 kg m 43 58 ft Ib e TROUBLE DIAGNOSES are included in sections dealing with complicated components and systems e SERVICE DATA AND SPECIFICATIONS are contained at the end of each section for quick reference e The captions WARNING and CAUTION warn you of steps that must be followed to prevent personal injury and or damage to some part of the vehicle WARNING indicates the possibility of personal injury if instructions are not followed CAUTION indicates the possibility of component damage if instructions are not followed BOLD TYPED STATEMENTS except WARNING and CAUTION give you helpful information GI 10 HOW TO READ WIRING DIAGRAMS Sample Wiring Diagram EXAMPL e For Description refer to aa Refer to optional splice G I E EXAM PL 02 CONNECTORS e is seo ae gt Se e dees G R G R b Ht M1 2 2 lt L G ES page a Lol A To Gl BR EXAMPL 04 I I I I p L 9 DIODE CONTROL MODULE B s e B lt A gt A T models l m lt M gt M T models e BEFER HO THE FOLLOWING Sarees Canta EE OE ee ee CM FUSE BLOCK E 8 Gr I J
41. r Purge Control COOL F EC Cooling Fan Control Solenoid Valve CSPS EC Control Sleeve Position Sensor PLA EC Partial Load Advance Coire Ea EE Headlamp With Daytime Light PNP SW EC Park Neutral SE Switch System POWER EL Power Supply Routing DEF EL Rear Window Defogger Power Steering Oil Pressure D LOCK EL Power Door Lock FSUSN EC switch pdt EL Headlamp With Daytime Light R FOG EL Rear Fog Lamp System SROOF EL Sun Roof ECTS EC Engine Coolant Temperature SRS RS Supplemental Restraint System Sensor S LOCK EL Power Door Lock Super Lock EGRC V EC Lu canister Control Solenoid S SIG EC Start Signal FCUT EC Fuel Cut Solenoid Valve SIS EE SUN vaen STOP L EL Stop Lamp EOM E E Clearance License and Tail FICD EC IACV FICD Solenoid Valve TAIL L EL Game i F PUMP EC Fuel Pump TCV EC _ Injection Timing Control Valve FIS EC Fuel Temperature Sensor TPS EC Throttle Position Sensor GLOW EC Quick glow system TURN EL Turn Signal and Hazard Warning GOVNR EC Electric Governor Lamps H LAMP EL Headlamp Without Daytime VSS EC Vehicle Speed Sensor Light System VTC EC VTC Solenoid Valve H SEAT EL Heated Seat WARN EL Warning Lamps HEAT HA Heater WINDOW EL Power Window HLC EL Headlamp Washer WIPER EL Front Wiper and Washer HO2S EC Heated Oxygen Sensor WIP R EL Rear Wiper and Washer HORN EL Horn Cigarette Lighter Clock IATS EC Intake Air Temperature Sensor IGN SG EC Ignition Signal Gl 20 HOW TO CH
42. r to power and the negative lead closer to ground 2 Operate the circuit 3 The voltmeter will indicate how many volts are being used to push current through that part of the cir cuit Note in the illustration that there is an excessive 4 1 volt drop between the battery and the bulb Symptom Dim bulb or no operation 0 zero ohm resistance between switch and bulb Connection with high resistance B Ground attery Ground SGI848 Measuring voltage drop Step by step The step by step method is most useful for isolating excessive drops in low voltage systems such as those in Computer Controlled Systems Circuits in the Computer Controlled System operate on very low amperage The Computer Controlled system operations can be adversely affected by any variation in resistance in the system Such resistance variation may be caused by poor connection improper installation improper wire gauge or corrosion The step by step voltage drop test can identify a component or wire with too much resistance Gl 32 HOW TO PERFORM EFFICIENT DIAGNOSIS FOR AN ELECTRICAL INCIDENT Circuit Inspection Cont d 1 Connect the voltmeter as shown starting at the battery and working your way around the circuit 2 An unusually large voltage drop will indicate a component or wire that needs to be repaired The illust
43. ration shows a poor connection causes a 4 volt drop Connection with high resistance The chart that follows illustrates some maximum allowable voltage drops These values are given as a guideline the exact value for each component may vary COMPONENT Wire Ground Connections Switch Contacts VOLTAGE DROP Negligible lt 001 volts Approx 0 1 volts Approx 0 3 volts SGI854 GI 33 HOW TO PERFORM EFFICIENT DIAGNOSIS FOR AN ELECTRICAL INCIDENT Circuit Inspection Cont d Relationship between open short high resistance circuit and the ECM pin control System Description When the switch is ON the ECM lights up the lamp Case 1 TERMINAL 1 TERMINAL 2 Monitoring Power supply Lamp Switch of the switch to light up the lamp O operation ON OFF Battery 9 Short FUSE blows Short FUSE blows Short amp Open Short No problem Open Inoperative lamp when switch is ON Inoperative lamp Open Inoperative lamp Open Inoperative lamp High resistance Single strand See below Input output voltage chart Pin Item Condition Voltage In case of high resistance such No value V as single strand V 1 Switch Switch Battery Lower than battery voltage ON voltage Approx 8 Example OFF Approx 0 Approx 0 2 Lamp Switch Battery Approx 0 ON voltage Inoperative lamp OFF Approx 0 Approx
44. roof Connector Inspection If water enters the connector it can short interior circuits This may lead to intermittent problems Check the following items to maintain the original waterproof characteristics RUBBER SEAL INSPECTION e Most waterproof connectors are provided with a rubber seal between the male and female connectors If the seal is missing the waterproof performance may not meet specifi cations e The rubber seal may come off when connectors are discon nected Whenever connectors are reconnected make sure the rubber seal is properly installed on either side of male or female connector WIRE SEAL INSPECTION The wire seal must be installed on the wire insertion area of a waterproof connector Be sure that the seal is installed properly Terminal Lock Inspection Check for unlocked terminals by pulling wire at the end of con nector An unlocked terminal may create intermittent signals in the circuit GI 23 HOW TO PERFORM EFFICIENT DIAGNOSIS FOR AN ELECTRICAL INCIDENT Work Flow START LISTEN TO CUSTOMER COMPLAINTS e eelere cian nia STEP 1 VERIFY THE SYMPTOM K See EE STEP 2 SYMPTOM SIMULATION NARROW THE POSSIBLE CAUSE STEP 3 LV INSPECT THE CIRCUIT STEP 4 i REPAIR THE CIRCUIT Ir STEP 5 j I
45. s please refer to the schematic above Disconnect the battery negative cable Start at one end of the circuit and work your way to the other end At the fuse block in this example Connect one probe of the DMM to the fuse block terminal on the load side Connect the other probe to the fuse block power side of SW1 Little or no resistance will indicate that portion of the circuit has good continuity If there were an open in the circuit the DMM would indicate an over limit or infinite resistance condition point A 5 Connect the probes between SW1 and the relay Little or no resistance will indicate that portion of the circuit has good continuity If there were an open in the circuit the DMM would indicate an over limit or infinite resistance condition point B 6 Connect the probes between the relay and the solenoid Little or no resistance will indicate that portion of the circuit has good continuity If there were an open in the circuit the DMM would indicate an over limit or infinite resistance condition point C Any circuit can be diagnosed using the approach in the above example Bom Gl 29 HOW TO PERFORM EFFICIENT DIAGNOSIS FOR AN ELECTRICAL INCIDENT Circuit Inspection Cont d Voltage check method To help in understanding the diagnosis of open circuits please refer to the previous schematic In any powered circuit an open can be found by methodically checking the system for the presence of volt age This is done b
46. sions H B amp Sedan Unit mm in Wagon Overall length 4522 178 03 4566 179 76 Overall width 1715 67 52 1 1715 67 52 1 Overall height 1410 55 51 2 1410 55 51 2 Front tread 1470 57 87 1470 57 87 Rear tread 1450 57 09 1450 57 09 Wheelbase 1 Without mirrors 2600 102 36 2 Without roof mounted antenna Wheels and Tires Steel Offset 2600 102 36 Road wheel mm in Aluminum Offset mm in 15x 6J 45 1 77 15x 6J 45 1 77 16 x 7J 45 1 77 Conven Tire tional size Spare Gl 45 185 65HR15 195 60VR15 Conven tional Conven tional 195 60R15 205 50R16 185 65 HR15 Conven tional LIFTING POINTS AND TOW TRUCK TOWING SPECIAL SERVICE TOOLS Tool number Tool name LM4086 0200 Board on attachment Description NT001 Preparation LM4519 0000 Safety stand attachment NT002 Attachment Attachment F SST No LM4086 0200 Side sill AGIO16 Board on Lift CAUTION Make sure vehicle is empty when lifting e The board on lift attachment LM4086 0200 set at front end of vehicle should be set on the front of the sill under the front door opening e Position attachments at front and rear ends of board on lift Gl 46 LIFTING POINTS AND TOW TRUCK TOWING Garage Jack and Safety Stand WARNING e Never ge
47. solenoid valve IACV FICD solenoid valve FICD solenoid valve Idle air control valve idle up control solenoid valve IACV idle up control solenoid valve Idle up control solenoid valve Idle speed control Fl pot ISC FI pot FI pot Idle speed control system ISC system baa Ignition control module ICM K Indirect fuel injection system IFI system TE Intake air temperature sensor IATS Air temperature sensor Knock add Detonation Knock sensor KS Detonation sensor Malfunction indicator MI Check engine light Manifold absolute pressure MAP SC Manifold absolute pressure Barometric pres sure switch solenoid valve MAP BARO switch solenoid valve Manifold absolute pressure sensor MAPS eg Manifold differential pressure MDP e Manifold differential pressure sensor MDPS SR Gl 52 ISO 15031 2 TERMINOLOGY LIST ISO 15031 2 Terminology List Cont d NEW ACRONYM Not applicable NEW TERM ABBREVIATION OLD TERM Manifold surface temperature MST Ke Manifold surface temperature sensor MSTS ass Manifold vacuum zone MVZ K Manifold vacuum zone sensor MVZS ee Mass air flow sensor MAFS Air flow meter Mixture control solenoid valve MC solenoid valve Air fuel ratio control solenoid valve Multiport fuel injection System MFI system Fuel injection control Neutral position switch e Neutral switch Non volatile random access memory NVRAM ee On board diagnostic sy
48. ss the connector is located in Example M main harness For details and to locate the connector refer to EL section Main Harness HARNESS LAYOUT A coordinate grid is included for complex harnesses to aid in locating connectors Ground GND Ground GND The line spliced and grounded under wire color shows that ground line is spliced at the grounded connector This shows the ground connection amp Connector views Common component This area shows the connector faces of the components in the wiring diagram on the page Connectors enclosed in broken line show that these connectors belong to the same component amp amp Connector color Fusible link and fuse box Reference area This shows a code for the color of the connector For code meaning refer to wire color codes Number of this chart This shows the arrangement of fusible link s and fuse s used for connector views of POWER SUPPLY ROUTING in EL section The open square shows current flow in and the shaded square shows cur rent flow out This shows that more information on the Super Multiple Junction SMJ and Joint Connectors J C exists on the foldout page Gl 14 HOW TO READ WIRING DIAGRAMS Example View from terminal side View from harness side Connector Connector symbol Single line Direction mark Connector symbol Ca HEHE Double line Direction mark SGI3
49. ssed and parking brake is released Gl 16 HOW TO READ WIRING DIAGRAMS IGNITION SWITCH ON or START VEHICLE Y SPEED SENSOR ummmm Detectable line for DTC Non detectable line for DTC ECM ENGINE CONTROL MODULE SGI862 Description Cont d DETECTABLE LINES AND NON DETECTABLE LINES In some wiring diagrams two kinds of lines representing wires with different weight are used e Aline with regular weight wider line represents a detect able line for DTC Diagnostic Trouble Code A detectable line for DTC is a circuit in which ECM Engine Control Mod ule can detect its malfunctions with the on board diagnostic system e Aline with less weight thinner line represents a non detect able line for DTC A non detectable line for DTC is a cir cuit in which ECM cannot detect its malfunctions with the on board diagnostic system Gl 17 HOW TO READ WIRING DIAGRAMS Description Cont d MULTIPLE SWITCH The continuity of a multiple switch is described in two ways as shown below e The switch chart is used in schematic diagrams e The switch diagram is used in wiring diagrams Example SWITCH CHART SWITCH DIAGRAM WIPER SWITCH WIPER SWITCH Both switches are turned in combination Continuity circuit of wiper switch SWITCH POSITION OFF SGI875 GI 18 HOW TO READ WIRING DIAGRAMS Description Cont d REFER
50. st be performed by an authorized NISSAN dealer e Improper maintenance including incorrect removal and installation of the SRS can lead to personal injury caused by unintentional activation of the system e Do not use electrical test equipment on any circuit related to the SRS unless instructed to do so in this Service Manual SRS wiring harnesses are covered with yellow insulation either just before the harness connec tors or for the complete harness for easy identification Precautions for NATS NATS Nissan Anti Theft System NATS will immobilize the engine if someone tries to start it with out the registered key of NATS Both of the originally supplied ignition key IDs have been NATS registered The NATS security indicator is located on the instrument panel The indicator flashes when the ignition switch is in LOCK or Acc position Therefore NATS warns outsiders that the vehicle is equipped with the anti theft system e When NATS detects trouble the malfunction indicator MI flashes This flashing indicates that the anti theft is not functioning so prompt service is required e When servicing NATS trouble diagnoses system initialisa tion and additional registration of other NATS ignition key IDs CONSULT II hardware and CONSULT II NATS soft ware is necessary GI 3 SGI285 SGI231 PRECAUTIONS Precautions for NATS Cont d Regarding the procedures of NATS initialisation a
51. stem CTOX system ot Crankshaft position CKP d Crankshaft position sensor CKPS Kee Data link connector DLC Wes Data link connector for CONSULT II DLC for CONSULT II Diagnostic connector for CONSULT II Diagnostic test mode DTM Diagnostic mode Diagnostic test mode selector DTM selector Diagnostic mode selector Diagnostic test mode DTM Mode Diagnostic test mode II DTM II Mode II Diagnostic trouble code DTC Malfunction code Direct fuel injection system DFI system Ke Distributor ignition system DI system Ignition timing control Early fuel evaporation mixture heater EFE mixture heater Mixture heater Early fuel evaporation system EFE system Mixture heater control GE erasable programmable read only EEPROM P Electronic ignition system El system Ignition timing control Engine control module ECM Engine control unit Engine coolant temperature ECT Engine temperature Engine coolant temperature sensor ECTS Engine temperature sensor Engine modification EM d Engine speed RPM Engine speed Erasable programmable read only memory EPROM Ed Evaporative emission canister or Canister Evaporative emission canister purge control solenoid valve EVAP canister or Canister EVAP canister purge control solenoid valve GI 51 Canister Canister control solenoid valve ISO 15031 2 TERMINOLOGY LIST ISO 15031 2 Terminology List Cont d NEW TERM NEW ACRONYM ABBREVIATION Not applicable OLD TERM E
52. stem OBD system Self diagnosis Open loop OL Open loop Oxidation catalyst OC Catalyst Oxidation catalytic converter system OC system sea Oxygen sensor 02S Exhaust gas sensor Park position switch nee Park switch Park neutral position switch PNP switch Park neutral switch Periodic trap oxidizer system PTOX system Powertrain control module PCM d Programmable read only memory PROM Wee Pulsed secondary air injection control sole noid valve PAIRC solenoid valve AIV control solenoid valve Pulsed secondary air injection system PAIR system Air induction valve AIV control Pulsed secondary air injection valve PAIR valve Air induction valve Random access memory RAM pre Read only memory ROM us Scan tool ST W Secondary air injection pump AIR pump eee Secondary air injection system AIR system eg Sequential multiport fuel injection system SFI system Sequential fuel injection Service reminder indicator SRI ds Simultaneous multiport fuel injection system Simultaneous fuel injection Smoke puff limiter system SPL system Wa Supercharger SC Ke Supercharger bypass SCB dd System readiness test SRT m Tank fuel temperature sensor Wes TNT Thermal vacuum valve TVV Thermal vacuum valve Three way catalyst TWC Catalyst Three way catalytic converter system TWC system nS Three way oxidation catalyst TWC 0C Catalyst GI 53 ISO 15031 2 TERMINOLOGY LIST ISO 15031 2 Terminology List Cont d NEW TERM
53. t under the vehicle while it is supported only by the jack Always use safety stands when you have to get under the vehicle e Place wheel chocks at both front and back of the wheels on the ground Garage jack points Note Safety stand points are the same as pantograph jack points Safety stand points Use safety stand adapter as shown Fit the lower side for stable support sill into groove Attachment Ki 4 SST No LM4519 0000 Safety stand NGI021 Gl 47 LIFTING POINTS AND TOW TRUCK TOWING 2 pole Lift WARNING When lifting the vehicle open the lift arms as wide as possible and ensure that the front and rear of the vehicle are well balanced When setting the lift arm do not allow the arm to contact the brake tubes and fuel lines Note Lift up points are the same as panto graph jack points Put the sill in the groove of the lift pad to prevent the Lift pad sill from deforming H the pad does not have a groove prepare a suitable attachment with one ill NGIO22 GI 48 LIFTING POINTS AND TOW TRUCK TOWING SGI805 H CVT model SGI806 A Tow Truck Towing CAUTION e All applicable local laws regarding the towing operation must be obeyed e It is necessary to use proper towing equipment to avoid possible damage to the vehicle during towing operation Towing is in accordance
54. ularly used engine oils Gl 6 PRECAUTIONS Precautions for Engine Oils Cont d e Wear protective clothing including impervious gloves where practicable e Do not put oily rags in pockets e Avoid contaminating clothes particularly underpants with oil e Heavily soiled clothing and oil impregnated footwear should not be worn Overalls must be cleaned regularly e First Aid treatment should be obtained immediately for open cuts and wounds e Use barrier creams applying them before each work period to help the removal of oil from the skin e Wash with soap and water to ensure all oil is removed skin cleansers and nail brushes will help Preparations contain ing lanolin replace the natural skin oils which have been removed e Do not use gasoline kerosine diesel fuel gas oil thinners or solvents for cleaning skin e l skin disorders develop obtain medical advice without delay e Where practicable degrease components prior to handling e Where there is a risk of eye contact eye protection should be worn for example chemical goggles or face shields in addition an eye wash facility should be provided ENVIRONMENTAL PROTECTION PRECAUTIONS Burning used engine oil in small space heaters or boilers can be recommended only for units of approved design The heating system must meet the requirements of HM Inspectorate of Pol lution for small burners of less than 0 4 MW If in doubt check with the appropriate local a
55. unction Box J B ABBE mi I M2 FUSE BLOCK I pn HE I IST T T I Junction Box J B I I I d e T I FUSE BLOCK I B B l fol 3 E30 Junction Box J B EE I I Bu coer assa aa a B w w Ge Ime eis B GY Ww YGIOO1 Gl 11 HOW TO READ WIRING DIAGRAMS Sample Wiring Diagram EXAMPL Cont d OPTIONAL SPLICE Optional splice M T models I R Le Qmm on I I E r G R A T models BATTERY i GIR Es WITT on w Arja I D pe SGI858 Gl 12 Number HOW TO READ WIRING DIAGRAMS Item Description Description 9 Power condition This shows the condition when the system receives battery positive voltage can be operated Fusible link Fusible link fuse location The double line shows that this is a fusible link The open circle shows current flow in and the shaded circle shows current flow out This shows the location of the fusible link or fuse in the fusible link or fuse box For arrangement refer to EL section POWER SUPPLY ROUTING Fuse The single line shows that this is a fuse The open circle shows current flow in and the shaded circle shows current flow out Current rating This shows the current rating of the fusible link or fuse el Connectors This shows that connector CE3 is female and connector Mt is male The G R wire is located in the 1A terminal of both connectors Terminal nu
56. uthority and or manufacturer of the approved appliance Dispose of used oil and used oil filters through authorized waste disposal contractors to licensed waste disposal sites or to the waste oil reclamation trade If in doubt contact the local author ity for advice on disposal facilities It is illegal to pour used oil on to the ground down sewers or drains or into water courses The regulations concerning the pollution of the environment will vary between regions Precautions for Fuel GASOLINE ENGINE Unleaded gasoline of at least 95 octane RON CAUTION Do not use leaded gasoline Using leaded gasoline will dam age the catalytic converter DIESEL ENGINE Diesel fuel of at least 50 cetane If two types of diesel fuel are available use summer or win ter fuel properly according to the following temperature con ditions e Above 7 C 20 F Summer type diesel fuel e Below 7 C 20 F Winter type diesel fuel GI 7 PRECAUTIONS Precautions for Fuel Cont d CAUTION e Donot use home heating oil gasoline or other alternate fuels in your diesel engine The use of those can cause engine damage e Do not use summer fuel at temperatures below 7 C 20 F Cold temperatures will cause wax to form in the fuel as a result it may prevent the engine from running smoothly e Do not add gasoline or other alternative fuels to diesel fuel Precautions for Air Conditioning Use an approved refriger
57. vaporative emission canister purge control valve EVAP canister purge control valve Canister purge cut valve Evaporative emission canister vent control valve Evaporative emission canister purge volume control valve EVAP canister vent control valve EVAP canister purge volume control valve Canister purge control valve Evaporative emission control system pres sure sensor Evaporative emission shut valve EVAP control system pres sure sensor EVAP shut valve Shutoff valve Evaporative emission system Exhaust gas recirculation valve EVAP system EGR valve Evaporative emission control system EGR valve Exhaust gas recirculation control BPT valve Exhaust gas recirculation control solenoid valve EGRC BPT valve EGRC solenoid valve BPT valve EGR control solenoid valve Exhaust gas recirculation temperature sensor Flash electrically erasable programmable EGR temperature sensor Exhaust gas temperature sensor FEEPROM me read only memory Flash erasable programmable read only FEPROM de memory Flexible fuel sensor FFS E Flexible fuel system FF system SC Heated Oxygen sensor HO2S Exhaust gas sensor Idle air control system IAC system Idle speed control Idle air control valve air regulator IACV air regulator Air regulator Idle air control valve auxiliary air control valve IACV AAC valve Auxiliary air control AAC valve Idle air control valve FICD
58. y switching the DMM to the voltage function 1 Connect one probe of the DMM to a known good ground 2 Begin probing at one end of the circuit and work your way to the other end 3 With SW1 open probe at SW1 to check for voltage voltage open is further down the circuit than SW1 no voltage open is between fuse block and SW1 point A 4 Close SW1 and probe at relay voltage open is further down the circuit than the relay no voltage open is between SW1 and relay point B 5 Close the relay and probe at the solenoid voltage open is further down the circuit than the solenoid no voltage open is between relay and solenoid point C Any powered circuit can be diagnosed using the approach in the above example TESTING FOR SHORTS IN THE CIRCUIT To simplify the discussion of shorts in the system please refer to the schematic below Inspection for shorts IGN ON Resistance check OR START g FUSE BLOCK RELAY peer Sii SOLENOID 1 I EH m i o Q e 000 B SIDE T I TS E Eq en SHORT SHORT SHORT A B sw2 C DMM bp Voltage check SGI847 Resistance check method 1 Disconnect the battery negative cable and remove the blown fuse 2 Disconnect all loads SW1 open relay disconnected and solenoid disconnected powered through the fuse 3 Connect one probe of the ohmmeter to the load side of the fuse terminal Connect the other probe to a
59. y voltage should exist OK Check the following items 1 Harness continuity between camshaft position sensor and battery 2 Engine relay 1 3 BR fusible link 4 Power source for ECM 2 5 Ignition switch E CHECK GROUND CIRCUIT he Check the following 1 Turn ignition switch to OFF posi items tion 1 Harness continuity 2 Disconnect camshaft position sen between camshaft sor harness connector position sensor and 3 Check resistance between termi ground nal and ground 2 Ground circuit for Resistance ECM Approximately 00 JOK SGI800 C GI 35 HOW TO FOLLOW TROUBLE DIAGNOSES How to Follow Test Groups in Trouble Diagnoses Cont d HOW TO FOLLOW THIS FLOW CHART Work and diagnostic procedure Start to diagnose a problem using procedures indicated in enclosed blocks as shown in the following example CHECK POWER SUPPLY Check item being per 1 Turn ignition switch to ON posi formed tion 2 Check voltage between terminal Procedure steps or mea 5 and ground surement results Battery voltage should exist Measurement results Required results are indicated in bold type in the correspond ing block as shown below These have the following meanings Battery voltage 11 14V or approximately 12V Voltage Approximately 0V Less than 1V Cross reference of work symbols in the text and
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