Page 1 FRONT SUSPENSION REAR SUSPENSION WHEEL AND TIRE SYSTEM DIFFERENTIALS This service manual has been prepared to provide SUBARU service personnel TRANSFER CASE with the necessary information and data for the correct maintenance and repair of SUBARU vehicles. DRIVE SHAFT SYSTEM...
Page 3: Table Of Contents
Check List for Interview................6 General Description ..................9 Electrical Components Location..............11 Control Module I/O Signal .................13 VDCCM Connector Cover.................19 Subaru Select Monitor................20 Read Diagnostic Trouble Code (DTC) ............23 Inspection Mode..................24 Clear Memory Mode..................25 Warning Light Illumination Pattern ............26 List of Diagnostic Trouble Code (DTC) .............27 Diagnostics Chart with Diagnosis Connector ..........33...
Page 4: Basic Diagnostic Procedure
BASIC DIAGNOSTIC PROCEDURE VDC (DIAGNOSTICS) 1. Basic Diagnostic Procedure A: PROCEDURE 1. WITHOUT SUBARU SELECT MONITOR Step Value CHECK PRE-INSPECTION. Normal Go to step 2. Repair or replace 1) Ask the customer when and how the trou- each unit. ble occurred using interview checklist.
Page 5 For diagnostic trouble code (DTC) list, refer to Diagnosis Con- “List of Diagnostic Trouble Code (DTC)”. <Ref. nector.> to VDC-27, WITHOUT SUBARU SELECT MONITOR, LIST, List of Diagnostic Trouble Code (DTC).> 2) Repair trouble cause. 3) Perform the clear memory mode. <Ref. to...
Page 6 1) Turn ignition switch to OFF. 2) Connect the SUBARU SELECT MONITOR to data link connector. 3) Turn ignition switch to ON and SUBARU SELECT MONITOR to ON. 4) Calling up the diagnostic trouble code (DTC). <Ref. to VDC-23, WITH SUBARU SELECT MONITOR, OPERATION, Read Diagnostic Trouble Code (DTC).>...
Page 7 Chart with For diagnostic trouble code (DTC) list, refer to Select Monitor.> “List of Diagnostic Trouble Code (DTC)”. <Ref. to VDC-29, WITH SUBARU SELECT MONI- TOR, LIST, List of Diagnostic Trouble Code (DTC).> 2) Repair trouble cause. 3) Perform the clear memory mode. <Ref. to VDC-25, WITH SUBARU SELECT MONI- TOR, OPERATION, Clear Memory Mode.>...
Page 8: Check List For Interview
CHECK LIST FOR INTERVIEW VDC (DIAGNOSTICS) 2. Check List for Interview A: CHECK Check the following items about the vehicle's state. 1. STATE OF ABS AND/OR VDC WARNING LIGHT ABS and/or VDC Always warning light comes Sometimes Only once Does not come on •...
Page 9 CHECK LIST FOR INTERVIEW VDC (DIAGNOSTICS) 3. STATE OF VDC OPERATION INDICATOR LIGHT VDC operation indi- Always cator light comes on. Sometimes Only once Does not come on • When / how long does it come on?: Ignition key position LOCK ON (before starting engine) START...
Page 10 CHECK LIST FOR INTERVIEW VDC (DIAGNOSTICS) Condition a) Brakes Deceleration : Continuous / Intermittent b) Accelerator Acceleration : Continuous / Intermittent c) Vehicle speed km/h Advancing Accelerating Reducing speed Low speed Turning Others : d) Tire inflation pressure Front RH tire : Front LH tire : Rear RH tire : Rear LH tire :...
Page 11: General Description
GENERAL DESCRIPTION VDC (DIAGNOSTICS) 3. General Description 6. TIRE Check tire specifications, tire wear and air pres- A: CAUTION sure. <Ref. to WT-2, SPECIFICATIONS, General 1. SUPPLEMENTAL RESTRAINT SYSTEM Description.> “AIRBAG” Airbag system wiring harness is routed near the ABS sensor, ABS control module and hydraulic control unit.
Page 12 GENERAL DESCRIPTION VDC (DIAGNOSTICS) C: PREPARATION TOOL 1. SPECIAL TOOLS ILLUSTRATION TOOL NUMBER DESCRIPTION REMARKS 24082AA210 CARTRIDGE Troubleshooting for electrical systems. ST-2082AA210 22771AA030 SELECT MONI- Troubleshooting for electrical systems. TOR KIT • English: 22771AA030 (Without printer) • German: 22771AA070 (Without printer) •...
Page 13: Electrical Components Location
(15) Yaw rate & lateral G sensor (3) Engine control module (10) Steering angle sensor (16) Transmission control module (4) Master cylinder (11) Data link connector (for SUBARU (17) VDC control module (VDCCM) select monitor) (5) Diagnosis connector (18) Pressure sensor...
Page 14 ELECTRICAL COMPONENTS LOCATION VDC (DIAGNOSTICS) ( 8 ) ( 6 ) ( 9 ) ( 7 ) (11) VDC00156 VDC00169 (17) ( 5 ) VDC00166 VDC00157 (18) ( 1 ) (13) (12) VDC00167 VDC00170 (10) (15) VDC00168 VDC00171 VDC-12...
Page 15: Control Module I/O Signal
CONTROL MODULE I/O SIGNAL VDC (DIAGNOSTICS) 5. Control Module I/O Signal A: ELECTRICAL SPECIFICATION VDC00125 NOTE: • The terminal numbers in the VDC control module connector are as shown in the figure. • When the connector is removed from the VDCCM, the connector switch closes the circuit between terminal No.
Page 16 CONTROL MODULE I/O SIGNAL VDC (DIAGNOSTICS) Terminal Input/Output signal Contents Measured value and measuring condition (+)—(−) Ignition switch 28—1 10 — 15 V when ignition switch is ON. Front left wheel 49—19 ABS sensor Front right wheel 14—15 (Wheel 0.12 — 1 V (When it is 20 Hz.) speed sen- Rear left wheel 16—17...
Page 17: Control Module I/O Signal
CONTROL MODULE I/O SIGNAL VDC (DIAGNOSTICS) Less than 1.5 V during 1.5 seconds when ignition switch is ON, VDC warning light 53—1 and 10 — 15 V after 1.5 seconds. Less than 1.5 V during 1.5 seconds when ignition switch is ON, ABS warning light 54—1 and 10 —...
Page 18: Secondary Suction Solenoid Valve
CONTROL MODULE I/O SIGNAL VDC (DIAGNOSTICS) B: SCHEMATIC VDC00126 (1) VDC control module (14) Primary suction solenoid valve (27) BATTERY (2) Relay box (15) Primary cut solenoid valve (28) Front left ABS sensor (3) Valve relay (16) Secondary suction solenoid valve (29) Front right ABS sensor (4) Motor relay (17) Secondary cut solenoid valve...
Page 19 CONTROL MODULE I/O SIGNAL VDC (DIAGNOSTICS) C: MEASUREMENT Measure input/output signal voltage. NOTE: Measure with the VDCCM connector cover removed. <Ref. to VDC-19, VDCCM Connector Cover.> 1. WAVEFORM ( 1 ) ( 2 ) 65 - 64 2.1 – 2.9 V ( 3 ) 5.0 V ( 2 )
Page 20 CONTROL MODULE I/O SIGNAL VDC (DIAGNOSTICS) ( 1 ) 5 ms ( 2 ) 83-1 2.5 V 1.5 V 3.5 V ( 2 ) 81-1 2.5 V VDC00185 (1) Can communication line (2) Terminal No. VDC-18...
Page 21: Vdccm Connector Cover
VDCCM CONNECTOR COVER VDC (DIAGNOSTICS) 6. VDCCM Connector Cover B: INSTALLATION Install in the reverse order of removal. A: REMOVE NOTE: 1) Turn ignition switch OFF. Align connector cover rib with connector hole be- 2) Disconnect connector from VDCCM. fore installation. 3) Remove band.
Page 22: Subaru Select Monitor
• For detailed operation procedure, refer to the SUBARU SELECT MONITOR OPERATION MAN- VDC00133 UAL. 4) Connect Subaru Select Monitor to data link con- • For detailed concerning diagnostic trouble nector. codes, refer to the DIAGNOSTIC TROUBLE CODE (1) Data link connector located in the lower por- LIST.
Page 23 Engine control signal is displayed. OPEN or GND AEC signal Engine control signal is displayed. OPEN or GND EAM signal Engine control command signal is displayed. 1 or 0 NOTE: For detailed operation procedure, refer to the SUBARU SELECT MONITOR OPERATION MANUAL. VDC-21...
Page 24 5) When `Done' and `turn ignition switch OFF' are 2) On the «System Select Menu» display screen, shown on the display screen, turn the Subaru Se- select {Brake System} and press the «YES» key. lect Monitor and ignition switch to OFF.
Page 25: Read Diagnostic Trouble Code (Dtc)
DTC: 22,31 Start code Start code DTC: 22 DTC: 31 VDC00137 2. WITH SUBARU SELECT MONITOR Refer to SUBARU SELECT MONITOR for informa- tion about how to obtain and understand diagnostic trouble codes (DTCs). <Ref. to VDC-20, Subaru Select Monitor.> VDC-23...
Page 26: Inspection Mode
INSPECTION MODE VDC (DIAGNOSTICS) 9. Inspection Mode A: OPERATION Reproduce the condition under which the problem has occurred as much as possible. Drive the vehicle at least ten minutes. NOTE: Make sure vehicle does not pull to one side during normal driving.
Page 27: Clear Memory Mode
After diagnostics is completed, make sure to clear memory. Make sure only start code (11) is shown after memory is cleared. 2. WITH SUBARU SELECT MONITOR Refer to SUBARU SELECT MONITOR for informa- tion about how to clear diagnostic trouble codes (DTCs). <Ref. to VDC-20, Subaru Select Monitor.>...
Page 28: Warning Light Illumination Pattern
WARNING LIGHT ILLUMINATION PATTERN VDC (DIAGNOSTICS) 11.Warning Light Illumination Pattern A: INSPECTION Engine runs. START Ignition key switch Illuminates. Goes out. 1.5 s Goes out. ABS warning light Illuminates. Goes out. Goes out. VDC warning light Illuminates. VDC operating Goes out. Goes out.
Page 29: List Of Diagnostic Trouble Code (Dtc)
LIST OF DIAGNOSTIC TROUBLE CODE (DTC) VDC (DIAGNOSTICS) 12.List of Diagnostic Trouble Code (DTC) A: LIST 1. WITHOUT SUBARU SELECT MONITOR DTC No. Contents of diagnosis Index No. Start code • DTC is shown after start code. — • Only start code is shown in normal con- dition.
Page 30: Power Supply
LIST OF DIAGNOSTIC TROUBLE CODE (DTC) VDC (DIAGNOSTICS) DTC No. Contents of diagnosis Index No. <Ref. to VDC-63, DTC 31 ABNORMAL INLET AND CUT SOLENOID Front right inlet valve VALVE CIRCUIT(S) (FRONT RH INLET), Diagnostics Chart with Diagno- sis Connector.> <Ref.
Page 31 Diagnostics Chart with Diagnosis Connector.> <Ref. to VDC-122, DTC 73 ABNORMAL LATERAL G SENSOR, Diagnos- 72, 73 (F87) — No. 63 lead circuit is open. tics Chart with Diagnosis Connector.> 2. WITH SUBARU SELECT MONITOR DTC No. Display screen Contents of diagnosis Index No.
Page 32 LIST OF DIAGNOSTIC TROUBLE CODE (DTC) VDC (DIAGNOSTICS) DTC No. Display screen Contents of diagnosis Index No. Front left ABS sensor Open or short circuit in <Ref. to VDC-133, DTC 23 FRONT LEFT ABS SENSOR CIR- circuit open or shorted front left ABS sensor CUIT OPEN OR SHORTED BATTERY, Diagnostics Chart with battery...
Page 33 LIST OF DIAGNOSTIC TROUBLE CODE (DTC) VDC (DIAGNOSTICS) DTC No. Display screen Contents of diagnosis Index No. TCM malfunction speci- TCM malfunction speci- <Ref. to VDC-180, DTC 45 TCM MALFUNCTION SPECIFICA- fications fications TIONS, Diagnostics Chart with Select Monitor.> Abnormal voltage of 5 V Abnormal voltage of 5 V <Ref.
Page 34 LIST OF DIAGNOSTIC TROUBLE CODE (DTC) VDC (DIAGNOSTICS) DTC No. Display screen Contents of diagnosis Index No. Lateral G sensor offset Lateral G sensor offset <Ref. to VDC-254, DTC 73 LATERAL G SENSOR OFFSET IS is too big. is too big. TOO BIG., Diagnostics Chart with Select Monitor.>...
Page 35: Diagnostics Chart With Diagnosis Connector
DIAGNOSTICS CHART WITH DIAGNOSIS CONNECTOR VDC (DIAGNOSTICS) 13.Diagnostics Chart with Diagnosis Connector A: ABS WARNING LIGHT, VDC WARNING LIGHT, VDC OPERATING INDICA- TOR LIGHT OR VDC OFF INDICATOR LIGHT DOES NOT COME ON. DIAGNOSIS: • ABS warning light circuit is open or shorted. •...
Page 36 DIAGNOSTICS CHART WITH DIAGNOSIS CONNECTOR VDC (DIAGNOSTICS) WIRING DIAGRAM: • 3.0 L model IGNITION BATTERY SWITCH NO. 18 15A SBF-4 DIAGNOSIS TERMINAL IGNITION RELAY NO. 5 15A : LHD MODEL COMBINATION : RHD MODEL METER DIAGNOSIS CONNECTOR VDC OFF SWITCH B255 B100 VDC CONTROL MODULE...
Page 37 DIAGNOSTICS CHART WITH DIAGNOSIS CONNECTOR VDC (DIAGNOSTICS) • Except 3.0 L model IGNITION BATTERY SWITCH NO. 18 15A SBF-4 DIAGNOSIS TERMINAL IGNITION RELAY NO. 5 15A DIAGNOSIS COMBINATION CONNECTOR METER VDC OFF SWITCH B255 B100 : LHD MODEL : RHD MODEL VDC CONTROL MODULE A1 A2 A4 A5 A6...
Page 38 DIAGNOSTICS CHART WITH DIAGNOSIS CONNECTOR VDC (DIAGNOSTICS) Step Value CHECK IF OTHER WARNING LIGHTS TURN Warning lights turn on. Go to step 2. Repair combina- tion meter. <Ref. Turn ignition switch to ON (engine OFF). to IDI-14, Combi- Do other warning lights turn on? nation Meter Assembly.>...
Page 39 DIAGNOSTICS CHART WITH DIAGNOSIS CONNECTOR VDC (DIAGNOSTICS) Step Value CHECK WARNING AND INDICATOR Turn(s) on. A temporary poor Replace VDCCM. LIGHTS. contact. <Ref. to VDC-8, 1) Connect connector to VDCCM. VDC Control Mod- 2) Turn ignition switch to ON. ule (VDCCM).> Do ABS warning light, VDC warning light, VDC operating indicator light and VDC OFF indicator light turn on?
Page 40 DIAGNOSTICS CHART WITH DIAGNOSIS CONNECTOR VDC (DIAGNOSTICS) B: ABS AND VDC WARNING LIGHTS DO NOT GO OFF. DIAGNOSIS: • ABS warning light circuit is open or shorted. • VDC warning light circuit is open or shorted. • Diagnosis circuit is open. TROUBLE SYMPTOM: •...
Page 41 DIAGNOSTICS CHART WITH DIAGNOSIS CONNECTOR VDC (DIAGNOSTICS) Step Value CHECK INSTALLATION OF VDCCM CON- VDCCM connector is con- Go to step 2. Insert VDCCM NECTOR. nected and the clamp is connector into Turn ignition switch to OFF. locked. VDCCM until the Is VDCCM connector inserted into VDCCM clamp locks onto until the clamp locks onto it?
Page 42 DIAGNOSTICS CHART WITH DIAGNOSIS CONNECTOR VDC (DIAGNOSTICS) C: VDC OPERATING INDICATOR LIGHT DOES NOT GO OFF. DIAGNOSIS: • VDC operating indicator light circuit is open or shorted. TROUBLE SYMPTOM: • When starting the engine and while VDC operating indicator light is kept ON. WIRING DIAGRAM: •...
Page 43 DIAGNOSTICS CHART WITH DIAGNOSIS CONNECTOR VDC (DIAGNOSTICS) • Except 3.0 L model IGNITION BATTERY SWITCH NO. 18 15A SBF-4 DIAGNOSIS TERMINAL IGNITION RELAY NO. 5 15A DIAGNOSIS COMBINATION CONNECTOR METER VDC OFF SWITCH B255 B100 : LHD MODEL : RHD MODEL VDC CONTROL MODULE A1 A2 A4 A5 A6...
Page 44 DIAGNOSTICS CHART WITH DIAGNOSIS CONNECTOR VDC (DIAGNOSTICS) D: VDC OFF INDICATOR LIGHT DOES NOT GO OFF. DIAGNOSIS: • VDC OFF indicator light circuit is open or shorted. • VDC OFF switch is shorted. TROUBLE SYMPTOM: • When starting the engine and while VDC OFF indicator light is kept ON. NOTE: When pushing the VDC OFF switch for 10 seconds or more while revving the engine, the VDC OFF indicator light goes off and operations cannot be continued.
Page 45 DIAGNOSTICS CHART WITH DIAGNOSIS CONNECTOR VDC (DIAGNOSTICS) WIRING DIAGRAM: • 3.0 L model IGNITION BATTERY SWITCH NO. 18 15A SBF-4 DIAGNOSIS TERMINAL IGNITION RELAY NO. 5 15A : LHD MODEL COMBINATION : RHD MODEL METER DIAGNOSIS CONNECTOR VDC OFF SWITCH B255 B100 VDC CONTROL MODULE...
Page 46 DIAGNOSTICS CHART WITH DIAGNOSIS CONNECTOR VDC (DIAGNOSTICS) • Except 3.0 L model IGNITION BATTERY SWITCH NO. 18 15A SBF-4 DIAGNOSIS TERMINAL IGNITION RELAY NO. 5 15A DIAGNOSIS COMBINATION CONNECTOR METER VDC OFF SWITCH B255 B100 : LHD MODEL : RHD MODEL VDC CONTROL MODULE A1 A2 A4 A5 A6...
Page 47 DIAGNOSTICS CHART WITH DIAGNOSIS CONNECTOR VDC (DIAGNOSTICS) Step Value CHECK ENGINE COOLANT TEMPERA- Indicator lights on, when The VDC is nor- Go to step 3. TURE. engine coolant temperature is mal. Does VDC OFF indicator light come on when too low and goes out after engine coolant temperature is too low? Does it warmed up.
Page 48 DIAGNOSTICS CHART WITH DIAGNOSIS CONNECTOR VDC (DIAGNOSTICS) E: DIAGNOSTIC TROUBLE CODE (DTC) DOES NOT APPEAR. DIAGNOSIS: • Diagnosis circuit is open. TROUBLE SYMPTOM: • The ABS warning light turns on or off normally but the start code cannot be read out in the diagnostic mode. WIRING DIAGRAM: •...
Page 49 DIAGNOSTICS CHART WITH DIAGNOSIS CONNECTOR VDC (DIAGNOSTICS) • Except 3.0 L model IGNITION BATTERY SWITCH NO. 18 15A SBF-4 DIAGNOSIS TERMINAL IGNITION RELAY NO. 5 15A DIAGNOSIS COMBINATION CONNECTOR METER VDC OFF SWITCH B255 B100 : LHD MODEL : RHD MODEL VDC CONTROL MODULE A1 A2 A4 A5 A6...
Page 50 DIAGNOSTICS CHART WITH DIAGNOSIS CONNECTOR VDC (DIAGNOSTICS) Step Value 0.5 Ω CHECK DIAGNOSIS TERMINAL. Go to step 2. Repair diagnosis Measure resistance between diagnosis termi- terminal harness. nals (B81) and chassis ground. Terminals Diagnosis terminal (A) — Chassis ground: Diagnosis terminal (B) — Chassis ground: Is the measured value less than the specified value?
Page 51 DIAGNOSTICS CHART WITH DIAGNOSIS CONNECTOR VDC (DIAGNOSTICS) F: DTC 21 ABNORMAL ABS SENSOR (OPEN CIRCUIT OR INPUT VOLTAGE TOO HIGH) (FRONT RH) NOTE: For diagnostic procedure, refer to DTC 27. <Ref. to VDC-50, DTC 27 ABNORMAL ABS SENSOR (OPEN CIRCUIT OR INPUT VOLTAGE TOO HIGH) (REAR LH), Diagnostics Chart with Diagnosis Connector.> G: DTC 23 ABNORMAL ABS SENSOR (OPEN CIRCUIT OR INPUT VOLTAGE TOO HIGH) (FRONT LH) NOTE:...
Page 52 DIAGNOSTICS CHART WITH DIAGNOSIS CONNECTOR VDC (DIAGNOSTICS) I: DTC 27 ABNORMAL ABS SENSOR (OPEN CIRCUIT OR INPUT VOLTAGE TOO HIGH) (REAR LH) DIAGNOSIS: • Faulty ABS sensor (Broken wire, input voltage too high) • Faulty harness connector TROUBLE SYMPTOM: • ABS does not operate. •...
Page 53 DIAGNOSTICS CHART WITH DIAGNOSIS CONNECTOR VDC (DIAGNOSTICS) Step Value CHECK ABS SENSOR. 1.0 — 1.5 kΩ Go to step 2. Replace ABS sen- 1) Turn ignition switch to OFF. sor. Front <Ref. to 2) Disconnect connector from ABS sensor. VDC-27, Front 3) Measure resistance of ABS sensor connec- ABS Sensor.>...
Page 54 DIAGNOSTICS CHART WITH DIAGNOSIS CONNECTOR VDC (DIAGNOSTICS) Step Value CHECK BATTERY SHORT OF HARNESS. Go to step 6. Repair harness Measure voltage between VDCCM connector between VDCCM and chassis ground. and ABS sensor. Connector & terminal DTC 21 / (F87) No. 14 (+) — Chassis ground ( −...
Page 55 DIAGNOSTICS CHART WITH DIAGNOSIS CONNECTOR VDC (DIAGNOSTICS) Step Value CHECK VDCCM. Same DTC indicated. Replace VDCCM. Go to step 12. 1) Connect all connectors. <Ref. to VDC-8, 2) Erase the memory. VDC Control Mod- 3) Perform inspection mode. ule (VDCCM).> 4) Read out the diagnostic trouble code.
Page 56 DIAGNOSTICS CHART WITH DIAGNOSIS CONNECTOR VDC (DIAGNOSTICS) J: DTC 22 ABNORMAL ABS SENSOR (ABNORMAL ABS SENSOR SIGNAL) (FRONT RH) NOTE: For diagnostic procedure, refer to DTC 28. <Ref. to VDC-56, DTC 28 ABNORMAL ABS SENSOR (ABNOR- MAL ABS SENSOR SIGNAL) (REAR LH), Diagnostics Chart with Diagnosis Connector.> K: DTC 24 ABNORMAL ABS SENSOR (ABNORMAL ABS SENSOR SIGNAL) (FRONT LH) NOTE:...
Page 57 DIAGNOSTICS CHART WITH DIAGNOSIS CONNECTOR VDC (DIAGNOSTICS) MEMO: VDC-55...
Page 58 DIAGNOSTICS CHART WITH DIAGNOSIS CONNECTOR VDC (DIAGNOSTICS) M: DTC 28 ABNORMAL ABS SENSOR (ABNORMAL ABS SENSOR SIGNAL) (REAR LH) DIAGNOSIS: • Faulty ABS sensor signal (noise, irregular signal, etc.) • Faulty harness/connector TROUBLE SYMPTOM: • ABS does not operate. • VDC does not operate. WIRING DIAGRAM: VDC CONTROL MODULE B100...
Page 59 DIAGNOSTICS CHART WITH DIAGNOSIS CONNECTOR VDC (DIAGNOSTICS) Step Value CHECK INSTALLATION OF ABS SENSOR. Tightened securely. Go to step 2. Tighten ABS sen- Tightening torque: sor installation 32 ± ± ± ± 10 N·m (3.3 ± ± ± ± 1.0 kgf-m, 24 ± ± ± ± 7 ft-lb) bolts securely.
Page 60 DIAGNOSTICS CHART WITH DIAGNOSIS CONNECTOR VDC (DIAGNOSTICS) Step Value CHECK TONE WHEEL RUNOUT. 0.05 mm (0.0020 in) Go to step 8. Repair tone wheel. Measure tone wheel runout. Front <Ref. to Is the measured value less than the specified VDC-29, Front value? Tone Wheel.>...
Page 61 DIAGNOSTICS CHART WITH DIAGNOSIS CONNECTOR VDC (DIAGNOSTICS) Step Value 0.5 Ω CHECK GROUND CIRCUIT OF VDCCM. Go to step 13. Repair VDCCM Measure resistance between VDCCM and ground harness. chassis ground. Connector & terminal (F87) No. 1 — Chassis ground: (F87) No.
Page 62 DIAGNOSTICS CHART WITH DIAGNOSIS CONNECTOR VDC (DIAGNOSTICS) N: DTC 29 ABNORMAL ABS SENSOR SIGNAL (ANY ONE OF FOUR) DIAGNOSIS: • Faulty ABS sensor signal (noise, irregular signal, etc.) • Faulty tone wheel • Wheels turning freely for a long time TROUBLE SYMPTOM: •...
Page 63 DIAGNOSTICS CHART WITH DIAGNOSIS CONNECTOR VDC (DIAGNOSTICS) Step Value CHECK IF THE WHEELS HAVE TURNED Turned freely over 1 minutes. The VDC is nor- Go to step 2. FREELY. mal. Erase the Check if the wheels have been turned freely for diagnostic trouble more than one minute, such as when the vehi- code.
Page 64 DIAGNOSTICS CHART WITH DIAGNOSIS CONNECTOR VDC (DIAGNOSTICS) Step Value CHECK CONTAMINATION OF ABS SENSOR Dirt or foreign matter found. Thoroughly Go to step 10. OR TONE WHEEL. remove dirt or Remove disc rotor from hub. other foreign mat- Is the ABS sensor pole piece or the tone wheel ter.
Page 65 DIAGNOSTICS CHART WITH DIAGNOSIS CONNECTOR VDC (DIAGNOSTICS) O: DTC 31 ABNORMAL INLET AND CUT SOLENOID VALVE CIRCUIT(S) (FRONT RH INLET) NOTE: For diagnostic procedure, refer to DTC 62. <Ref. to VDC-64, DTC 62 ABNORMAL INLET AND CUT SOLE- NOID VALVE CIRCUIT(S) (SECONDARY CUT), Diagnostics Chart with Diagnosis Connector.> P: DTC 33 ABNORMAL INLET AND CUT SOLENOID VALVE CIRCUIT(S) (FRONT LH INLET) NOTE:...
Page 66 DIAGNOSTICS CHART WITH DIAGNOSIS CONNECTOR VDC (DIAGNOSTICS) T: DTC 62 ABNORMAL INLET AND CUT SOLENOID VALVE CIRCUIT(S) (SEC- ONDARY CUT) DIAGNOSIS: • Faulty harness/connector • Faulty solenoid valve in VDCH/U TROUBLE SYMPTOM: • ABS does not operate. • VDC does not operate. WIRING DIAGRAM: RELAY BOX VDC HYDRAULIC UNIT...
Page 67 DIAGNOSTICS CHART WITH DIAGNOSIS CONNECTOR VDC (DIAGNOSTICS) Step Value 8.04 — 9.04 Ω CHECK RESISTANCE OF SOLENOID Go to step 2. Replace VDCH/U. VALVE. <Ref. to VDC-8, 1) Turn ignition switch to OFF. VDC Control Mod- 2) Disconnect two connectors (VDC1, F91) ule (VDCCM).>...
Page 68 DIAGNOSTICS CHART WITH DIAGNOSIS CONNECTOR VDC (DIAGNOSTICS) Step Value CHECK BATTERY SHORT OF SOLENOID Go to step 5. Replace VDCH/U. VALVE. <Ref. to VDC-8, 1) Turn ignition switch to ON. VDC Control Mod- 2) Measure voltage between VDCH/U con- ule (VDCCM).> nector and chassis ground.
Page 69 DIAGNOSTICS CHART WITH DIAGNOSIS CONNECTOR VDC (DIAGNOSTICS) Step Value CHECK GROUND SHORT OF HARNESS. 1 MΩ Go to step 8. Repair harness 1) Turn ignition switch to OFF. between VDCCM 2) Measure resistance between VDCCM con- and VDCH/U. nector and chassis ground. Connector &...
Page 70 DIAGNOSTICS CHART WITH DIAGNOSIS CONNECTOR VDC (DIAGNOSTICS) U: DTC 32 ABNORMAL OUTLET AND SUCTION SOLENOID VALVE CIRCUIT(S) (FRONT RH OUTLET) NOTE: For diagnostic procedure, refer to DTC 64. <Ref. to VDC-70, DTC 64 ABNORMAL OUTLET AND SUCTION SOLENOID VALVE CIRCUIT(S) (SECONDARY SUCTION), Diagnostics Chart with Diagnosis Connector.> V: DTC 34 ABNORMAL OUTLET AND SUCTION SOLENOID VALVE CIRCUIT(S) (FRONT LH OUTLET) NOTE:...
Page 71 DIAGNOSTICS CHART WITH DIAGNOSIS CONNECTOR VDC (DIAGNOSTICS) MEMO: VDC-69...
Page 72 DIAGNOSTICS CHART WITH DIAGNOSIS CONNECTOR VDC (DIAGNOSTICS) Z: DTC 64 ABNORMAL OUTLET AND SUCTION SOLENOID VALVE CIRCUIT(S) (SECONDARY SUCTION) DIAGNOSIS: • Faulty harness/connector • Faulty solenoid valve in VDCH/U TROUBLE SYMPTOM: • ABS does not operate. • VDC does not operate. WIRING DIAGRAM: RELAY BOX VDC HYDRAULIC UNIT...
Page 73 DIAGNOSTICS CHART WITH DIAGNOSIS CONNECTOR VDC (DIAGNOSTICS) Step Value 3.8 — 4.8 Ω CHECK RESISTANCE OF SOLENOID Go to step 2. Replace VDCH/U. VALVE. <Ref. to VDC-8, 1) Turn ignition switch to OFF. VDC Control Mod- 2) Disconnect two connectors (VDC1, F91) ule (VDCCM).>...
Page 74 DIAGNOSTICS CHART WITH DIAGNOSIS CONNECTOR VDC (DIAGNOSTICS) Step Value CHECK BATTERY SHORT OF SOLENOID Go to step 5. Replace VDCH/U. VALVE. <Ref. to VDC-8, 1) Turn ignition switch to ON. VDC Control Mod- 2) Measure voltage between VDCH/U con- ule (VDCCM).> nector and chassis ground.
Page 75 DIAGNOSTICS CHART WITH DIAGNOSIS CONNECTOR VDC (DIAGNOSTICS) Step Value CHECK GROUND SHORT OF HARNESS. 1 MΩ Go to step 8. Repair harness 1) Turn ignition switch to OFF. between VDCCM 2) Measure resistance between VDCCM con- and VDCH/U. nector and chassis ground. Connector &...
Page 76 DIAGNOSTICS CHART WITH DIAGNOSIS CONNECTOR VDC (DIAGNOSTICS) AA:DTC 41 ABNORMAL VDC CONTROL MODULE DIAGNOSIS: • Faulty VDCCM TROUBLE SYMPTOM: • ABS does not operate. • VDC does not operate. WIRING DIAGRAM: CONTROL MODULE 56 57 59 60 62 63 82 83 VDC00143 VDC-74...
Page 77 DIAGNOSTICS CHART WITH DIAGNOSIS CONNECTOR VDC (DIAGNOSTICS) Step Value 0.5 Ω CHECK GROUND CIRCUIT OF VDCCM. Go to step 2. Repair VDCCM 1) Turn ignition switch to OFF. ground harness. 2) Disconnect connector from VDCCM. 3) Measure resistance between VDCCM and chassis ground.
Page 78 DIAGNOSTICS CHART WITH DIAGNOSIS CONNECTOR VDC (DIAGNOSTICS) AB:DTC 42 SOURCE VOLTAGE IS ABNORMAL. DIAGNOSIS: • Power source voltage of the VDCCM is low. TROUBLE SYMPTOM: • ABS does not operate. • VDC does not operate. WIRING DIAGRAM: BATTERY SBF-4 SBF-1 IGNITION SWITCH GENERATOR...
Page 79 DIAGNOSTICS CHART WITH DIAGNOSIS CONNECTOR VDC (DIAGNOSTICS) Step Value CHECK GENERATOR. 10 — 15 V Go to step 2. Repair generator. 1) Start engine. 2) Idling after warm-up. 3) Measure voltage between generator B ter- minal and chassis ground. Terminal Generator B terminal —...
Page 80 DIAGNOSTICS CHART WITH DIAGNOSIS CONNECTOR VDC (DIAGNOSTICS) AC:DTC 43 FAULTY VDCCM — ECM COMMUNICATION LINE DIAGNOSIS: • AET communication line is broken or short circuited. • AEB communication line is broken or short circuited. • AEC communication line is broken or short circuited. TROUBLE SYMPTOM: •...
Page 81 DIAGNOSTICS CHART WITH DIAGNOSIS CONNECTOR VDC (DIAGNOSTICS) Step Value 0.5 Ω CHECK HARNESS/CONNECTOR BETWEEN Go to step 2. Repair harness/ VDCCM AND ECM. connector 1) Turn ignition switch to OFF. between VDCCM 2) Disconnect connector from VDCCM. and ECM. 3) Disconnect connector from ECM. 4) Measure resistance between VDCCM con- nector and ECM.
Page 82 DIAGNOSTICS CHART WITH DIAGNOSIS CONNECTOR VDC (DIAGNOSTICS) Step Value CHECK HARNESS/CONNECTOR BETWEEN 10 — 15 V Go to step 6. Go to step 9. VDCCM AND ECM. 1) Turn ignition switch to OFF. 2) Connect connector to ECM. 3) Turn ignition switch to ON. 4) Measure voltage between VDCCM connec- tor and chassis ground.
Page 83 DIAGNOSTICS CHART WITH DIAGNOSIS CONNECTOR VDC (DIAGNOSTICS) Step Value CHECK ENGINE. Operates properly. Replace ECM. Repair engine. Is the engine functioning normally? <Ref. to FU(H6DO)-46, Engine Control Module.> VDC-81...
Page 84 DIAGNOSTICS CHART WITH DIAGNOSIS CONNECTOR VDC (DIAGNOSTICS) AD:DTC 44 A COMMUNICATION WITH AT CONTROL ABNORMAL DIAGNOSIS: • Communication with AT control faults TROUBLE SYMPTOM: • VDC does not operate. WIRING DIAGRAM: B56 TCM STEERING ANGLE SENSOR B231 B234 B225 : RHD MODEL : LHD MODEL CONTROL MODULE...
Page 85 DIAGNOSTICS CHART WITH DIAGNOSIS CONNECTOR VDC (DIAGNOSTICS) Step Value 57 — 63 Ω CHECK RESISTANCE OF HARNESS. Go to step 2. Repair harness 1) Turn ignition switch to OFF. between TCM and 2) Disconnect two connectors from TCM. VDCCM. 3) Measure resistance between TCM connec- tor terminals.
Page 86 DIAGNOSTICS CHART WITH DIAGNOSIS CONNECTOR VDC (DIAGNOSTICS) AE:DTC 45 CONTROL MODULE OUT OF SPECIFICATION DIAGNOSIS: • Control module out of specification TROUBLE SYMPTOM: • ABS does not operate. • VDC does not operate. Step Value CHECK TCM. Same DTC indicated. Go to step 2.
Page 87 DIAGNOSTICS CHART WITH DIAGNOSIS CONNECTOR VDC (DIAGNOSTICS) Step Value CHECK VDCCM. Same DTC indicated. Go to step 6. The original 1) Install original TCM. VDCCM has been 2) Replace VDCCM. <Ref. to VDC-8, VDC faulty. Control Module (VDCCM).> 3) Erase the memory. 4) Perform inspection mode.
Page 88 DIAGNOSTICS CHART WITH DIAGNOSIS CONNECTOR VDC (DIAGNOSTICS) AF:DTC 46 ABNORMAL VOLTAGE OF 5 V POWER SUPPLY DIAGNOSIS: • 5 volt power supply is abnormal. TROUBLE SYMPTOM: • ABS does not operate. • VDC does not operate. WIRING DIAGRAM: VDC CONTROL MODULE R100 VDC5 YAW RATE AND...
Page 89 DIAGNOSTICS CHART WITH DIAGNOSIS CONNECTOR VDC (DIAGNOSTICS) Step Value CHECK GROUND SHORT OF SENSOR AND 1 MΩ Go to step 3. Go to step 2. HARNESS. 1) Turn ignition switch OFF. 2) Disconnect connector from VDCCM. 3) Measure resistance between VDCCM con- nector and chassis ground.
Page 90 DIAGNOSTICS CHART WITH DIAGNOSIS CONNECTOR VDC (DIAGNOSTICS) Step Value CHECK BATTERY SHORT OF HARNESS. 0.5 V Replace faulty Repair or replace 1) Turn ignition switch to ON. sensor. harness connec- 2) Measure voltage between VDCCM and tor between chassis ground. VDCCM and faulty Connector &...
Page 91 DIAGNOSTICS CHART WITH DIAGNOSIS CONNECTOR VDC (DIAGNOSTICS) MEMO: VDC-89...
Page 92 DIAGNOSTICS CHART WITH DIAGNOSIS CONNECTOR VDC (DIAGNOSTICS) AG:DTC 47 FAULTY CAN COMMUNICATION LINE DIAGNOSIS: • CAN communication line is broken or short circuited. TROUBLE SYMPTOM: • ABS does not operate. • VDC does not operate. WIRING DIAGRAM: B56 TCM STEERING ANGLE SENSOR B231 B234 B225...
Page 93 DIAGNOSTICS CHART WITH DIAGNOSIS CONNECTOR VDC (DIAGNOSTICS) Step Value 0.5 Ω CHECK HARNESS BETWEEN VDCCM, Go to step 3. Go to step 2. STEERING ANGLE SENSOR AND TCM. 1) Turn ignition switch OFF. 2) Disconnect connector from VDCCM, TCM and steering angle sensor. 3) Measure resistance between VDCCM, TCM and steering angle sensor.
Page 94 DIAGNOSTICS CHART WITH DIAGNOSIS CONNECTOR VDC (DIAGNOSTICS) Step Value CHECK POOR CONTACT IN CONNECTORS. There is poor contact. Replace steering Repair or replace Is there poor contact in steering angle sensor? angle sensor. steering angle sensor connector. 114 — 126 Ω CHECK VDCCM.
Page 95 DIAGNOSTICS CHART WITH DIAGNOSIS CONNECTOR VDC (DIAGNOSTICS) MEMO: VDC-93...
Page 96 DIAGNOSTICS CHART WITH DIAGNOSIS CONNECTOR VDC (DIAGNOSTICS) AH:DTC 48 FAULTY ECM — VDCCM COMMUNICATION LINE DIAGNOSIS: • EAS communication line is broken or short circuited. • EAC communication line is broken or short circuited. TROUBLE SYMPTOM: • ABS does not operate. •...
Page 97 DIAGNOSTICS CHART WITH DIAGNOSIS CONNECTOR VDC (DIAGNOSTICS) Step Value 0.5 Ω CHECK HARNESS BETWEEN ECM AND VD- Go to step 2. Repair or replace CCM. open circuit 1) Turn ignition switch to OFF. between VDCCM 2) Disconnect connectors from VDCCM and and ECM.
Page 98 DIAGNOSTICS CHART WITH DIAGNOSIS CONNECTOR VDC (DIAGNOSTICS) Step Value CHECK POOR CONTACT IN ECM CONNEC- There is poor contact. Replace ECM. Repair or replace TORS. <Ref. to ECM connector. Is there poor contact in ECM connector? FU(H6DO)-46, Engine Control Module.> ERASE MEMORY.
Page 99 DIAGNOSTICS CHART WITH DIAGNOSIS CONNECTOR VDC (DIAGNOSTICS) MEMO: VDC-97...
Page 100 DIAGNOSTICS CHART WITH DIAGNOSIS CONNECTOR VDC (DIAGNOSTICS) AI: DTC 49 ABNORMAL ENGINE SPEED SIGNAL DIAGNOSIS: • Engine speed signal line is broken or short circuited. TROUBLE SYMPTOM: • VDC does not operate. WIRING DIAGRAM: B134 B136 ENGINE CONTROL MODULE B255 : WITHOUT OBD MODEL : WITH OBD MODEL : RHD MODEL...
Page 101 DIAGNOSTICS CHART WITH DIAGNOSIS CONNECTOR VDC (DIAGNOSTICS) Step Value CHECK TACHOMETER OPERATION IN Operates properly. Go to step 2. Repair tachome- COMBINATION METER. ter. Does tachometer operate normally? 0.5 Ω CHECK HARNESS BETWEEN VDCCM AND Go to step 3. Repair harness ECM.
Page 102 DIAGNOSTICS CHART WITH DIAGNOSIS CONNECTOR VDC (DIAGNOSTICS) AJ:DTC 51 ABNORMAL VALVE RELAY DIAGNOSIS: • Faulty valve relay NOTE: When DTC 74 ABNORMAL PRESSURE SENSOR procedure 4 is carried out, DTC 51 is memorized. TROUBLE SYMPTOM: • ABS does not operate. •...
Page 103 DIAGNOSTICS CHART WITH DIAGNOSIS CONNECTOR VDC (DIAGNOSTICS) Step Value 93 — 113 Ω CHECK RESISTANCE OF VALVE RELAY. Go to step 2. Replace valve 1) Turn ignition switch to OFF. relay. 2) Remove valve relay from relay box. 3) Measure resistance between valve relay terminals.
Page 104 DIAGNOSTICS CHART WITH DIAGNOSIS CONNECTOR VDC (DIAGNOSTICS) Step Value CHECK POWER SUPPLY FOR VALVE RE- 10 — 15 V Go to step 8. Repair harness LAY. between battery 1) Disconnect connector (F89) from relay box. and relay box con- 2) Measure voltage between relay box con- nector.
Page 105 DIAGNOSTICS CHART WITH DIAGNOSIS CONNECTOR VDC (DIAGNOSTICS) Step Value CHECK BATTERY SHORT IN CONTACT Go to step 13. Replace relay box. POINT CIRCUIT OF RELAY BOX. Check fuse No. 8. 1) Turn ignition switch to ON. 2) Measure voltage between relay box con- nector and chassis ground.
Page 106 DIAGNOSTICS CHART WITH DIAGNOSIS CONNECTOR VDC (DIAGNOSTICS) Step Value CHECK GROUND SHORT IN CONTACT 1 MΩ Go to step 19. Replace relay box POINT CIRCUIT OF RELAY BOX. and check fuse Measure resistance between VDCH/U connec- No. 8. tor and chassis ground. Connector &...
Page 107 DIAGNOSTICS CHART WITH DIAGNOSIS CONNECTOR VDC (DIAGNOSTICS) Step Value CHECK GROUND SHORT OF SOLENOID 1 MΩ Go to step 24. Replace VDCH/U VALVE. and check all Measure resistance between VDCH/U connec- fuses. <Ref. to tor and chassis ground. VDC-8, VDC Con- Connector &...
Page 108 DIAGNOSTICS CHART WITH DIAGNOSIS CONNECTOR VDC (DIAGNOSTICS) Step Value CHECK BATTERY SHORT OF HARNESS. Go to step 28. Repair harness 1) Turn ignition switch to ON. between VDCH/U 2) Measure voltage between VDCCM connec- and VDCCM and tor and chassis ground. check all fuses.
Page 109 DIAGNOSTICS CHART WITH DIAGNOSIS CONNECTOR VDC (DIAGNOSTICS) Step Value 4.0 — 6.0 Ω CHECK HARNESS/CONNECTOR BETWEEN Go to step 31. Repair harness/ VDCCM AND VDCH/U. connector Measure resistance between VDCCM connec- between VDCH/U tor and VDCH/U connector. and VDCCM. Connector & terminal (F87) No.
Page 110 DIAGNOSTICS CHART WITH DIAGNOSIS CONNECTOR VDC (DIAGNOSTICS) AK:DTC 52 ABNORMAL MOTOR AND/OR MOTOR RELAY DIAGNOSIS: • Faulty motor • Faulty motor relay • Faulty harness connector TROUBLE SYMPTOM: • ABS does not operate. • VDC does not operate. WIRING DIAGRAM: BATTERY SBF-1 100A RELAY BOX...
Page 111 DIAGNOSTICS CHART WITH DIAGNOSIS CONNECTOR VDC (DIAGNOSTICS) Step Value 70 — 90 Ω CHECK RESISTANCE OF MOTOR RELAY. Go to step 2. Replace motor 1) Turn ignition switch to OFF. relay. 2) Remove motor relay from relay box. 3) Measure resistance between motor relay terminals.
Page 112 DIAGNOSTICS CHART WITH DIAGNOSIS CONNECTOR VDC (DIAGNOSTICS) Step Value 0.5 Ω CHECK OPEN CIRCUIT IN CONTACT POINT Go to step 8. Replace relay box. CIRCUIT OF RELAY BOX. 1) Turn ignition switch to OFF. 2) Disconnect connectors (VDC2, F90) from relay box.
Page 113 DIAGNOSTICS CHART WITH DIAGNOSIS CONNECTOR VDC (DIAGNOSTICS) Step Value CHECK BATTERY SHORT IN CIRCUIT OF Go to step 14. Replace relay box. RELAY BOX. 1) Turn ignition switch to ON. 2) Measure voltage between relay box con- nector and chassis ground. Connector &...
Page 114: Revolution
DIAGNOSTICS CHART WITH DIAGNOSIS CONNECTOR VDC (DIAGNOSTICS) Step Value CHECK VDCCM MOTOR DRIVE TERMINAL. Drop from 10 — 13 V to less Go to step 20. Replace VDCCM. 1) Turn ignition switch OFF. than 1.5 V, and rise to 10 — 13 <Ref.
Page 115 DIAGNOSTICS CHART WITH DIAGNOSIS CONNECTOR VDC (DIAGNOSTICS) MEMO: VDC-113...
Page 116 DIAGNOSTICS CHART WITH DIAGNOSIS CONNECTOR VDC (DIAGNOSTICS) AL:DTC 71 ABNORMAL STEERING ANGLE SENSOR DIAGNOSIS: • Faulty steering angle sensor TROUBLE SYMPTOM: • ABS does not operate. • VDC does not operate. WIRING DIAGRAM: B56 TCM STEERING ANGLE SENSOR B231 B234 B225 : RHD MODEL : LHD MODEL...
Page 117 DIAGNOSTICS CHART WITH DIAGNOSIS CONNECTOR VDC (DIAGNOSTICS) Step Value CHECK THE STEERING WHEEL. 5° Go to step 2. Perform centering 1) Drive the vehicle on a flat road. alignment of steer- 2) Stop the vehicle in a straight line. ing. 3) Check the angle of steering wheel.
Page 118 DIAGNOSTICS CHART WITH DIAGNOSIS CONNECTOR VDC (DIAGNOSTICS) Step Value 114 — 126 Ω CHECK HARNESS OF STEERING ANGLE Repair harness Go to step 8. SENSOR. between steering 1) Connect connector to steering angle sen- angle sensor and sor. VDCCM. 2) Disconnect connector from VDCCM. 3) Measure resistance between VDCCM con- nector terminals.
Page 119 DIAGNOSTICS CHART WITH DIAGNOSIS CONNECTOR VDC (DIAGNOSTICS) MEMO: VDC-117...
Page 120 DIAGNOSTICS CHART WITH DIAGNOSIS CONNECTOR VDC (DIAGNOSTICS) AM:DTC 72 ABNORMAL YAW RATE SENSOR DIAGNOSIS: • Faulty yaw rate sensor TROUBLE SYMPTOM: • ABS does not operate. • VDC does not operate. WIRING DIAGRAM: CONTROL MODULE R100 YAW RATE AND LATERAL G SENSOR R100 1 2 3...
Page 121 DIAGNOSTICS CHART WITH DIAGNOSIS CONNECTOR VDC (DIAGNOSTICS) Step Value CHECK THE STEERING WHEEL. 5° Go to step 2. Perform centering 1) Drive the vehicle on a flat road. alignment of steer- 2) Stop the vehicle in a straight line. ing. 3) Check the angle of steering wheel.
Page 122 DIAGNOSTICS CHART WITH DIAGNOSIS CONNECTOR VDC (DIAGNOSTICS) Step Value 0.5 Ω CHECK GROUND CIRCUIT OF YAW RATE Go to step 10. Go to step 8. AND LATERAL G SENSOR. Measure resistance between yaw rate and lat- eral G sensor and chassis ground. Connector &...
Page 123 DIAGNOSTICS CHART WITH DIAGNOSIS CONNECTOR VDC (DIAGNOSTICS) Step Value CHECK BATTERY SHORT OF HARNESS. 0.5 V Go to step 14. Repair harness 1) Turn ignition switch to ON. between yaw rate 2) Measure voltage between VDCCM and and lateral G sen- chassis ground.
Page 124 DIAGNOSTICS CHART WITH DIAGNOSIS CONNECTOR VDC (DIAGNOSTICS) AN:DTC 73 ABNORMAL LATERAL G SENSOR DIAGNOSIS: • Faulty lateral G sensor TROUBLE SYMPTOM: • ABS does not operate. • VDC does not operate. WIRING DIAGRAM: CONTROL MODULE R100 YAW RATE AND LATERAL G SENSOR R100 1 2 3...
Page 125 DIAGNOSTICS CHART WITH DIAGNOSIS CONNECTOR VDC (DIAGNOSTICS) Step Value CHECK INSTALLATION OF LATERAL G Fixed securely. Go to step 2. Install yaw rate SENSOR. and lateral G sen- Check installation of lateral G sensor. sor securely. Is the yaw rate and lateral G sensor fixed securely? CHECK INPUT VOLTAGE OF G SENSOR.
Page 126 DIAGNOSTICS CHART WITH DIAGNOSIS CONNECTOR VDC (DIAGNOSTICS) Step Value CHECK BATTERY SHORT OF HARNESS. Go to step 8. Repair harness 1) Turn ignition switch to ON. between yaw rate 2) Measure voltage between VDCCM connec- and lateral G sen- tor and chassis ground. sor and VDCCM.
Page 127 DIAGNOSTICS CHART WITH DIAGNOSIS CONNECTOR VDC (DIAGNOSTICS) MEMO: VDC-125...
Page 128 DIAGNOSTICS CHART WITH DIAGNOSIS CONNECTOR VDC (DIAGNOSTICS) AO:DTC 74 ABNORMAL PRESSURE SENSOR DIAGNOSIS: • Faulty pressure sensor TROUBLE SYMPTOM: • ABS does not operate. • VDC does not operate. WIRING DIAGRAM: CONTROL MODULE VDC5 VDC HYDRAULIC UNIT 4 5 6 56 57 59 60 62 63...
Page 129 DIAGNOSTICS CHART WITH DIAGNOSIS CONNECTOR VDC (DIAGNOSTICS) Step Value 0.5 Ω CHECK GROUND CIRCUIT OF PRESSURE Go to step 4. Go to step 2. SENSOR. 1) Turn ignition switch to OFF. 2) Disconnect connector (F91) from VDCH/U. 3) Measure resistance between VDCH/U con- nector and chassis ground.
Page 130 DIAGNOSTICS CHART WITH DIAGNOSIS CONNECTOR VDC (DIAGNOSTICS) Step Value CHECK GROUND SHORT OF HARNESS. 1 MΩ Go to step 8. Repair harness 1) Turn ignition switch to OFF. between VDCH/U 2) Disconnect connector from VDCCM. and VDCCM. 3) Measure resistance between VDCH/U con- nector and chassis ground.
Page 131 DIAGNOSTICS CHART WITH DIAGNOSIS CONNECTOR VDC (DIAGNOSTICS) Step Value CHECK BRAKE PEDAL STROKE. 95 mm (3.74 in) Go to step 14. Perform bleeding. Measure the stroke between non-forced pedal position and forced pedal position with 50 kg (110 lb). Is the measured value less than the specified value? CHECK INPUT VOLTAGE OF PRESSURE 0.2 V...
Page 132: Diagnostics Chart With Select Monitor
DIAGNOSTICS CHART WITH SELECT MONITOR VDC (DIAGNOSTICS) 14.Diagnostics Chart with Select Monitor A: COMMUNICATION FOR INITIALIZING IMPOSSIBLE (SELECT MONITOR COMMUNICATION FAILURE) DIAGNOSIS: • Faulty harness connector TROUBLE SYMPTOM: • ABS warning light remains on. WIRING DIAGRAM: BATTERY SBF-4 50A SBF-1 100A IGNITION SWITCH DATA LINK...
Page 133 DIAGNOSTICS CHART WITH SELECT MONITOR VDC (DIAGNOSTICS) Step Value CHECK IGNITION SWITCH. Is ignition switch to ON? Go to step 2. Turn ignition switch to ON, and select VDCCM mode using the select monitor. CHECK BATTERY. 11 V Go to step 3. Charge or replace 1) Turn ignition switch to OFF.
Page 134 DIAGNOSTICS CHART WITH SELECT MONITOR VDC (DIAGNOSTICS) Step Value CHECK OUTPUT SIGNAL FOR VDCCM. Repair harness Go to step 9. 1) Turn ignition switch to ON. and connector 2) Measure voltage between data link connec- between each tor and chassis ground. control module Connector &...
Page 135 DIAGNOSTICS CHART WITH SELECT MONITOR VDC (DIAGNOSTICS) B: DTC 21 FRONT RIGHT ABS SENSOR CIRCUIT OPEN OR SHORTED BAT- TERY NOTE: For diagnostic procedure, refer to DTC 27. <Ref. to VDC-134, DTC 27 REAR LEFT ABS SENSOR CIRCUIT OPEN OR SHORTED BATTERY, Diagnostics Chart with Select Monitor.> C: DTC 23 FRONT LEFT ABS SENSOR CIRCUIT OPEN OR SHORTED BAT- TERY NOTE:...
Page 136 DIAGNOSTICS CHART WITH SELECT MONITOR VDC (DIAGNOSTICS) E: DTC 27 REAR LEFT ABS SENSOR CIRCUIT OPEN OR SHORTED BATTERY DIAGNOSIS: • Faulty ABS sensor (Broken wire, input voltage too high) • Faulty harness connector TROUBLE SYMPTOM: • ABS does not operate. •...
Page 137 DIAGNOSTICS CHART WITH SELECT MONITOR VDC (DIAGNOSTICS) Step Value CHECK OUTPUT OF ABS SENSOR USING Change Go to step 2. Go to step 9. SELECT MONITOR. 1) Select “Current data display & Save” on the select monitor. 2) Read the ABS sensor output corresponding to the faulty system in the select monitor data display mode.
Page 138 DIAGNOSTICS CHART WITH SELECT MONITOR VDC (DIAGNOSTICS) Step Value CHECK ABS SENSOR. 1.0 — 1.5 kΩ Go to step 9. Replace ABS sen- 1) Turn ignition switch to OFF. sor. Front <Ref. to 2) Disconnect connector from ABS sensor. VDC-27, Front 3) Measure resistance of ABS sensor connec- ABS Sensor.>...
Page 139 DIAGNOSTICS CHART WITH SELECT MONITOR VDC (DIAGNOSTICS) Step Value CHECK BATTERY SHORT OF HARNESS. Go to step 13. Repair harness Measure voltage between VDCCM connector between VDCCM and chassis ground. and ABS sensor. Connector & terminal DTC 21 / (F87) No. 14 (+) — Chassis ground ( −...
Page 140 DIAGNOSTICS CHART WITH SELECT MONITOR VDC (DIAGNOSTICS) Step Value CHECK VDCCM. Same pattern. Replace VDCCM. Go to step 19. 1) Connect all connectors. <Ref. to VDC-8, 2) Erase the memory. VDC Control Mod- 3) Perform inspection mode. ule (VDCCM).> 4) Read out the diagnostic trouble code. Is the same diagnostic trouble code as in the current diagnosis still being output? CHECK ANY OTHER DIAGNOSTIC TROU-...
Page 141 DIAGNOSTICS CHART WITH SELECT MONITOR VDC (DIAGNOSTICS) F: DTC 22 FRONT RIGHT ABS SENSOR SIGNAL NOTE: For diagnostic procedure, refer to DTC 28. <Ref. to VDC-140, DTC 28 REAR LEFT ABS SENSOR SIGNAL, Diagnostics Chart with Select Monitor.> G: DTC 24 FRONT LEFT ABS SENSOR SIGNAL NOTE: For diagnostic procedure, refer to DTC 28.
Page 142 DIAGNOSTICS CHART WITH SELECT MONITOR VDC (DIAGNOSTICS) I: DTC 28 REAR LEFT ABS SENSOR SIGNAL DIAGNOSIS: • Faulty ABS sensor signal (noise, irregular signal) • Faulty harness/connector TROUBLE SYMPTOM: • ABS does not operate. • VDC does not operate. WIRING DIAGRAM: VDC CONTROL MODULE B100 : RHD MODEL...
Page 143 DIAGNOSTICS CHART WITH SELECT MONITOR VDC (DIAGNOSTICS) Step Value CHECK OUTPUT OF ABS SENSOR USING Change Go to step 2. Go to step 8. SELECT MONITOR. 1) Select “Current data display & Save” on the select monitor. 2) Read the ABS sensor output corresponding to the faulty system in the select monitor data display mode.
Page 144 DIAGNOSTICS CHART WITH SELECT MONITOR VDC (DIAGNOSTICS) Step Value CHECK ABS SENSOR GAP. Front wheel 0.3 - 0.8 mm Go to step 10. Adjust the gap. Measure tone wheel to pole piece gap over (0.012 - 0.031 in) and Rear NOTE: entire perimeter of the wheel.
Page 145 DIAGNOSTICS CHART WITH SELECT MONITOR VDC (DIAGNOSTICS) Step Value CHECK RESISTANCE OF ABS SENSOR. 1.0 — 1.5 kΩ Go to step 16. Replace ABS sen- 1) Turn ignition switch OFF. sor. Front <Ref. to 2) Disconnect connector from ABS sensor. VDC-27, Front 3) Measure resistance between ABS sensor ABS Sensor.>...
Page 146 DIAGNOSTICS CHART WITH SELECT MONITOR VDC (DIAGNOSTICS) Step Value CHECK POOR CONTACT IN CONNECTORS. There is poor contact. Repair connector. Go to step 21. Is there poor contact in connectors between VDCCM and ABS sensor? CHECK SOURCES OF SIGNAL NOISE. Installed properly.
Page 147 DIAGNOSTICS CHART WITH SELECT MONITOR VDC (DIAGNOSTICS) MEMO: VDC-145...
Page 148 DIAGNOSTICS CHART WITH SELECT MONITOR VDC (DIAGNOSTICS) J: DTC 29 ANY ONE OF FOUR ABS SENSOR SIGNAL DIAGNOSIS: • Faulty ABS sensor signal (noise, irregular signal, etc.) • Faulty tone wheel • Wheels turning freely for a long time TROUBLE SYMPTOM: •...
Page 149 DIAGNOSTICS CHART WITH SELECT MONITOR VDC (DIAGNOSTICS) Step Value CHECK IF THE WHEELS HAVE TURNED Turned freely over 1 minutes. The VDC is nor- Go to step 2. FREELY. mal. Erase the Check if the wheels have been turned freely for diagnostic trouble more than one minute, such as when the vehi- code.
Page 150 DIAGNOSTICS CHART WITH SELECT MONITOR VDC (DIAGNOSTICS) Step Value CHECK CONTAMINATION OF ABS SENSOR Dirt or foreign matter found. Thoroughly Go to step 10. OR TONE WHEEL. remove dirt or Remove disc rotor from hub. other foreign mat- Is the ABS sensor pole piece or the tone wheel ter.
Page 151 DIAGNOSTICS CHART WITH SELECT MONITOR VDC (DIAGNOSTICS) K: DTC 31 FR HOLD VALVE MALFUNCTION (FRONT RIGHT INLET VALVE MALFUNCTION) NOTE: For diagnostic procedure, refer to DTC 62. <Ref. to VDC-150, DTC 62 NORMAL OPENING VALVE 1 MAL- FUNCTION (SECONDARY CUT VALVE MALFUNCTION), Diagnostics Chart with Select Monitor.> L: DTC 33 FL HOLD VALVE MALFUNCTION (FRONT LEFT INLET VALVE MAL- FUNCTION) NOTE:...
Page 152 DIAGNOSTICS CHART WITH SELECT MONITOR VDC (DIAGNOSTICS) P: DTC 62 NORMAL OPENING VALVE 1 MALFUNCTION (SECONDARY CUT VALVE MALFUNCTION) DIAGNOSIS: • Faulty harness/connector • Faulty solenoid valve in VDCH/U TROUBLE SYMPTOM: • ABS does not operate. • VDC does not operate. WIRING DIAGRAM: RELAY BOX VDC HYDRAULIC UNIT...
Page 153 DIAGNOSTICS CHART WITH SELECT MONITOR VDC (DIAGNOSTICS) Step Value 8.04 — 9.04 Ω CHECK RESISTANCE OF SOLENOID Go to step 2. Replace VDCH/U. VALVE. <Ref. to VDC-8, 1) Turn ignition switch to OFF. VDC Control Mod- 2) Disconnect two connectors (VDC1, F91) ule (VDCCM).>...
Page 154 DIAGNOSTICS CHART WITH SELECT MONITOR VDC (DIAGNOSTICS) Step Value CHECK BATTERY SHORT OF SOLENOID Go to step 5. Replace VDCH/U. VALVE. <Ref. to VDC-8, 1) Turn ignition switch to ON. VDC Control Mod- 2) Measure voltage between VDCH/U con- ule (VDCCM).> nector and chassis ground.
Page 155 DIAGNOSTICS CHART WITH SELECT MONITOR VDC (DIAGNOSTICS) Step Value CHECK GROUND SHORT OF HARNESS. 1 MΩ Go to step 8. Repair harness 1) Turn ignition switch to OFF. between VDCCM 2) Measure resistance between VDCCM con- and VDCH/U. nector and chassis ground. Connector &...
Page 156 DIAGNOSTICS CHART WITH SELECT MONITOR VDC (DIAGNOSTICS) Q: DTC 32 FR PRESSURE REDUCING VALVE MALFUNCTION (FRONT RIGHT OUTLET VALVE MALFUNCTION) NOTE: For diagnostic procedure, refer to DTC 64. <Ref. to VDC-156, DTC 64 NORMAL CLOSING VALVE 1 MAL- FUNCTION (SECONDARY SUCTION VALVE MALFUNCTION), Diagnostics Chart with Select Monitor.> R: DTC 34 FL PRESSURE REDUCING VALVE MALFUNCTION (FRONT LEFT OUTLET VALVE MALFUNCTION) NOTE:...
Page 157 DIAGNOSTICS CHART WITH SELECT MONITOR VDC (DIAGNOSTICS) MEMO: VDC-155...
Page 158 DIAGNOSTICS CHART WITH SELECT MONITOR VDC (DIAGNOSTICS) V: DTC 64 NORMAL CLOSING VALVE 1 MALFUNCTION (SECONDARY SUC- TION VALVE MALFUNCTION) DIAGNOSIS: • Faulty harness/connector • Faulty solenoid valve in VDCH/U TROUBLE SYMPTOM: • ABS does not operate. • VDC does not operate. WIRING DIAGRAM: RELAY BOX VDC HYDRAULIC UNIT...
Page 159 DIAGNOSTICS CHART WITH SELECT MONITOR VDC (DIAGNOSTICS) Step Value 3.8 — 4.8 Ω CHECK RESISTANCE OF SOLENOID Go to step 2. Replace VDCH/U. VALVE. <Ref. to VDC-8, 1) Turn ignition switch to OFF. VDC Control Mod- 2) Disconnect two connectors (VDC1, F91) ule (VDCCM).>...
Page 160 DIAGNOSTICS CHART WITH SELECT MONITOR VDC (DIAGNOSTICS) Step Value CHECK BATTERY SHORT OF SOLENOID Go to step 5. Replace VDCH/U. VALVE. <Ref. to VDC-8, 1) Turn ignition switch to ON. VDC Control Mod- 2) Measure voltage between VDCH/U con- ule (VDCCM).> nector and chassis ground.
Page 161 DIAGNOSTICS CHART WITH SELECT MONITOR VDC (DIAGNOSTICS) Step Value CHECK GROUND SHORT OF HARNESS. 1 MΩ Go to step 8. Repair harness 1) Turn ignition switch to OFF. between VDCCM 2) Measure resistance between VDCCM con- and VDCH/U. nector and chassis ground. Connector &...
Page 162 DIAGNOSTICS CHART WITH SELECT MONITOR VDC (DIAGNOSTICS) W: DTC 41 ELECTRICAL CONTROL MODULE (VDC CONTROL MODULE MAL- FUNCTION) DIAGNOSIS: • Faulty VDCCM TROUBLE SYMPTOM: • ABS does not operate. • VDC does not operate. WIRING DIAGRAM: CONTROL MODULE 56 57 59 60 62 63 82 83...
Page 163 DIAGNOSTICS CHART WITH SELECT MONITOR VDC (DIAGNOSTICS) Step Value 0.5 Ω CHECK GROUND CIRCUIT OF VDCCM. Go to step 2. Repair VDCCM 1) Turn ignition switch to OFF. ground harness. 2) Disconnect connector from VDCCM. 3) Measure resistance between VDCCM and chassis ground.
Page 164 DIAGNOSTICS CHART WITH SELECT MONITOR VDC (DIAGNOSTICS) X: DTC 42 POWER SUPPLY VOLTAGE LOW DIAGNOSIS: • Power source voltage of the VDCCM is low. TROUBLE SYMPTOM: • ABS does not operate. • VDC does not operate. WIRING DIAGRAM: BATTERY SBF-4 SBF-1 IGNITION SWITCH...
Page 165 DIAGNOSTICS CHART WITH SELECT MONITOR VDC (DIAGNOSTICS) Step Value CHECK GENERATOR. 10 — 15 V Go to step 2. Repair generator. 1) Start engine. 2) Idling after warm-up. 3) Measure voltage between generator B ter- minal and chassis ground. Terminal Generator B terminal ( + + + + ) —...
Page 166 DIAGNOSTICS CHART WITH SELECT MONITOR VDC (DIAGNOSTICS) Y: DTC 43 AET COMMUNICATION LINE MALFUNCTION DIAGNOSIS: • AET communication line is broken or short circuited. TROUBLE SYMPTOM: • VDC does not operate. WIRING DIAGRAM: CONTROL MODULE B255 : WITHOUT OBD MODEL : WITH OBD MODEL : RHD MODEL : LHD MODEL...
Page 167 DIAGNOSTICS CHART WITH SELECT MONITOR VDC (DIAGNOSTICS) Step Value 0.5 Ω CHECK HARNESS/CONNECTOR BETWEEN Go to step 2. Repair harness/ VDCCM AND ECM. connector 1) Turn ignition switch to OFF. between VDCCM 2) Disconnect connector from VDCCM. and ECM. 3) Disconnect connector from ECM. 4) Measure resistance between VDCCM con- nector and ECM.
Page 168 DIAGNOSTICS CHART WITH SELECT MONITOR VDC (DIAGNOSTICS) Step Value CHECK VDCCM. Same DTC indicated. Replace VDCCM. Go to step 8. 1) Turn ignition switch to OFF. <Ref. to VDC-8, 2) Connect all connectors. VDC Control Mod- 3) Erase the memory. ule (VDCCM).>...
Page 169 DIAGNOSTICS CHART WITH SELECT MONITOR VDC (DIAGNOSTICS) MEMO: VDC-167...
Page 170 DIAGNOSTICS CHART WITH SELECT MONITOR VDC (DIAGNOSTICS) Z: DTC 43 AEB COMMUNICATION LINE MALFUNCTION DIAGNOSIS: • AEB communication line is broken or short circuited. TROUBLE SYMPTOM: • VDC does not operate. WIRING DIAGRAM: CONTROL MODULE B255 : WITHOUT OBD MODEL : WITH OBD MODEL : RHD MODEL : LHD MODEL...
Page 171 DIAGNOSTICS CHART WITH SELECT MONITOR VDC (DIAGNOSTICS) Step Value 0.5 Ω CHECK HARNESS/CONNECTOR BETWEEN Go to step 2. Repair harness/ VDCCM AND ECM. connector 1) Turn ignition switch to OFF. between VDCCM 2) Disconnect connector from VDCCM. and ECM. 3) Disconnect connector from ECM. 4) Measure resistance between VDCCM con- nector and ECM.
Page 172 DIAGNOSTICS CHART WITH SELECT MONITOR VDC (DIAGNOSTICS) Step Value CHECK VDCCM. Same DTC indicated. Replace VDCCM. Go to step 8. 1) Turn ignition switch to OFF. <Ref. to VDC-8, 2) Connect all connectors. VDC Control Mod- 3) Erase the memory. ule (VDCCM).>...
Page 173 DIAGNOSTICS CHART WITH SELECT MONITOR VDC (DIAGNOSTICS) MEMO: VDC-171...
Page 174 DIAGNOSTICS CHART WITH SELECT MONITOR VDC (DIAGNOSTICS) AA:DTC 43 AEC COMMUNICATION LINE MALFUNCTION DIAGNOSIS: • AEC communication line is broken or short circuited. TROUBLE SYMPTOM: • VDC does not operate. WIRING DIAGRAM: CONTROL MODULE B255 : WITHOUT OBD MODEL : WITH OBD MODEL : RHD MODEL : LHD MODEL : 4 CYLINDER ENGINE...
Page 175 DIAGNOSTICS CHART WITH SELECT MONITOR VDC (DIAGNOSTICS) Step Value 0.5 Ω CHECK HARNESS/CONNECTOR BETWEEN Go to step 2. Repair harness/ VDCCM AND ECM. connector 1) Turn ignition switch to OFF. between VDCCM 2) Disconnect connector from VDCCM. and ECM. 3) Disconnect connector from ECM. 4) Measure resistance between VDCCM con- nector and ECM.
Page 176 DIAGNOSTICS CHART WITH SELECT MONITOR VDC (DIAGNOSTICS) Step Value CHECK VDCCM. Same DTC indicated. Replace VDCCM. Go to step 8. 1) Turn ignition switch to OFF. <Ref. to VDC-8, 2) Connect all connectors. VDC Control Mod- 3) Erase the memory. ule (VDCCM).>...
Page 177 DIAGNOSTICS CHART WITH SELECT MONITOR VDC (DIAGNOSTICS) MEMO: VDC-175...
Page 178 DIAGNOSTICS CHART WITH SELECT MONITOR VDC (DIAGNOSTICS) AB:DTC 44 TCM COMMUNICATION CIRCUIT DIAGNOSIS: • Communication with AT control faults TROUBLE SYMPTOM: • VDC does not operate. WIRING DIAGRAM: B56 TCM STEERING ANGLE SENSOR B231 B234 B225 : RHD MODEL : LHD MODEL CONTROL MODULE B231...
Page 179 DIAGNOSTICS CHART WITH SELECT MONITOR VDC (DIAGNOSTICS) Step Value 57 — 63 Ω CHECK RESISTANCE OF HARNESS. Go to step 2. Repair harness 1) Turn ignition switch to OFF. between TCM and 2) Disconnect two connectors from TCM. VDCCM. 3) Measure resistance between TCM connec- tor terminals.
Page 180 DIAGNOSTICS CHART WITH SELECT MONITOR VDC (DIAGNOSTICS) AC:DTC 45 INCORRECT VDC CONTROL MODULE DIAGNOSIS: • Control module out of specification TROUBLE SYMPTOM: • ABS does not operate. • VDC does not operate. Step Value CHECK VDCCM SPECIFICATIONS. Agree. Go to step 2. Replace VDCCM.
Page 181 DIAGNOSTICS CHART WITH SELECT MONITOR VDC (DIAGNOSTICS) Step Value CHECK VDCCM. Same DTC indicated. Go to step 6. The original 1) Install original TCM. VDCCM has been 2) Replace VDCCM. <Ref. to VDC-8, VDC faulty. Control Module (VDCCM).> 3) Erase the memory. 4) Perform inspection mode.
Page 182 DIAGNOSTICS CHART WITH SELECT MONITOR VDC (DIAGNOSTICS) AD:DTC 45 TCM MALFUNCTION SPECIFICATIONS DIAGNOSIS: • Control module out of specification TROUBLE SYMPTOM: • ABS does not operate. • VDC does not operate. Step Value CHECK AT SYSTEM. Indicated. Repair AT system. Replace VDCCM. 1) Start the engine.
Page 183 DIAGNOSTICS CHART WITH SELECT MONITOR VDC (DIAGNOSTICS) MEMO: VDC-181...
Page 184 DIAGNOSTICS CHART WITH SELECT MONITOR VDC (DIAGNOSTICS) AE:DTC 46 ABNORMAL VOLTAGE OF 5 V POWER SUPPLY DIAGNOSIS: • 5 volt power supply is abnormal. TROUBLE SYMPTOM: • ABS does not operate. • VDC does not operate. WIRING DIAGRAM: VDC CONTROL MODULE R100 VDC5 YAW RATE AND...
Page 185 DIAGNOSTICS CHART WITH SELECT MONITOR VDC (DIAGNOSTICS) Step Value CHECK GROUND SHORT OF SENSOR AND 1 MΩ Go to step 3. Go to step 2. HARNESS. 1) Turn ignition switch OFF. 2) Disconnect connector from VDCCM. 3) Measure resistance between VDCCM con- nector and chassis ground.
Page 186 DIAGNOSTICS CHART WITH SELECT MONITOR VDC (DIAGNOSTICS) Step Value CHECK BATTERY SHORT OF HARNESS. 0.5 V Replace faulty Repair or replace 1) Turn ignition switch to ON. sensor. harness connec- 2) Measure voltage between VDCCM and tor between chassis ground. VDCCM and faulty Connector &...
Page 187 DIAGNOSTICS CHART WITH SELECT MONITOR VDC (DIAGNOSTICS) MEMO: VDC-185...
Page 188 DIAGNOSTICS CHART WITH SELECT MONITOR VDC (DIAGNOSTICS) AF:DTC 47 IMPROPER CAN COMMUNICATION DIAGNOSIS: • CAN communication line is broken or short circuited. TROUBLE SYMPTOM: • ABS does not operate. • VDC does not operate. WIRING DIAGRAM: B56 TCM STEERING ANGLE SENSOR B231 B234 B225...
Page 189 DIAGNOSTICS CHART WITH SELECT MONITOR VDC (DIAGNOSTICS) Step Value 0.5 Ω CHECK HARNESS BETWEEN VDCCM, Go to step 3. Go to step 2. STEERING ANGLE SENSOR AND TCM. 1) Turn ignition switch OFF. 2) Disconnect connector from VDCCM, TCM and steering angle sensor. 3) Measure resistance between VDCCM, TCM and steering angle sensor.
Page 190 DIAGNOSTICS CHART WITH SELECT MONITOR VDC (DIAGNOSTICS) Step Value CHECK POOR CONTACT IN CONNECTORS. There is poor contact. Replace steering Repair or replace Is there poor contact in steering angle sensor? angle sensor. steering angle sensor connector. 114 — 126 Ω CHECK VDCCM.
Page 191 DIAGNOSTICS CHART WITH SELECT MONITOR VDC (DIAGNOSTICS) MEMO: VDC-189...
Page 192 DIAGNOSTICS CHART WITH SELECT MONITOR VDC (DIAGNOSTICS) AG:DTC 48 IMPROPER EAC COMMUNICATION DIAGNOSIS: • EAC communication line is broken or short circuited. TROUBLE SYMPTOM: • ABS does not operate. • VDC does not operate. WIRING DIAGRAM: B134 B136 ENGINE CONTROL MODULE B255 : WITHOUT OBD MODEL...
Page 193 DIAGNOSTICS CHART WITH SELECT MONITOR VDC (DIAGNOSTICS) Step Value 0.5 Ω CHECK HARNESS BETWEEN ECM AND VD- Go to step 2. Repair or replace CCM. open circuit 1) Turn ignition switch to OFF. between VDCCM 2) Disconnect connector from VDCCM and and ECM.
Page 194 DIAGNOSTICS CHART WITH SELECT MONITOR VDC (DIAGNOSTICS) Step Value CHECK DIAGNOSTIC TROUBLE CODE. Same DTC indicated. Replace ECM. A temporary poor 1) Perform inspection mode. <Ref. to contact. 2) Read out the diagnostic trouble code. FU(H6DO)-46, Is the same diagnostic trouble code as in Engine Control the current diagnosis still being output? Module.>...
Page 195 DIAGNOSTICS CHART WITH SELECT MONITOR VDC (DIAGNOSTICS) MEMO: VDC-193...
Page 196 DIAGNOSTICS CHART WITH SELECT MONITOR VDC (DIAGNOSTICS) AH:DTC 48 EAS COMMUNICATION LINE GROUNDING SHORTED DIAGNOSIS: • EAS communication line is short circuited. TROUBLE SYMPTOM: • ABS does not operate. • VDC does not operate. WIRING DIAGRAM: B134 B136 ENGINE CONTROL MODULE B255 : WITHOUT OBD MODEL...
Page 197 DIAGNOSTICS CHART WITH SELECT MONITOR VDC (DIAGNOSTICS) Step Value CHECK GROUND SHORT OF HARNESS. 1 MΩ Go to step 2. Repair or replace 1) Turn ignition switch to OFF. ground short cir- 2) Disconnect connector from VDCCM and cuit between ECM.
Page 198 DIAGNOSTICS CHART WITH SELECT MONITOR VDC (DIAGNOSTICS) AI: DTC 48 ERRONEOUS COMMUNICATION FROM EGI TO VDC DIAGNOSIS: • EAS communication line is broken or short circuited. • EAC communication line is broken or short circuited. TROUBLE SYMPTOM: • ABS does not operate. •...
Page 199 DIAGNOSTICS CHART WITH SELECT MONITOR VDC (DIAGNOSTICS) Step Value 0.5 Ω CHECK HARNESS BETWEEN ECM AND VD- Go to step 2. Repair or replace CCM. open circuit 1) Turn ignition switch to OFF. between VDCCM 2) Disconnect connector from VDCCM and and ECM.
Page 200 DIAGNOSTICS CHART WITH SELECT MONITOR VDC (DIAGNOSTICS) Step Value ERASE MEMORY. Can be erased. Go to step 6. Replace VDCCM. 1) Connect all connectors. <Ref. to VDC-8, 2) Erase the memory. VDC Control Mod- Can the memory be erased? ule (VDCCM).> CHECK DIAGNOSTIC TROUBLE CODE.
Page 201 DIAGNOSTICS CHART WITH SELECT MONITOR VDC (DIAGNOSTICS) MEMO: VDC-199...
Page 202 DIAGNOSTICS CHART WITH SELECT MONITOR VDC (DIAGNOSTICS) AJ:DTC 49 ABNORMAL ENGINE SPEED SIGNAL DIAGNOSIS: • Engine speed signal line is broken or short circuited. TROUBLE SYMPTOM: • VDC does not operate. WIRING DIAGRAM: B134 B136 ENGINE CONTROL MODULE B255 : WITHOUT OBD MODEL : WITH OBD MODEL : RHD MODEL : LHD MODEL...
Page 203 DIAGNOSTICS CHART WITH SELECT MONITOR VDC (DIAGNOSTICS) Step Value CHECK TACHOMETER OPERATION IN Operates properly. Go to step 2. Repair tachome- COMBINATION METER. ter. Does tachometer operate normally? 0.5 Ω CHECK HARNESS BETWEEN VDCCM AND Go to step 3. Repair harness ECM.
Page 204 DIAGNOSTICS CHART WITH SELECT MONITOR VDC (DIAGNOSTICS) AK:DTC 51 VALVE RELAY DIAGNOSIS: • Faulty valve relay NOTE: When DTC 74 inspection is carried out, DTC 51 is memorized. TROUBLE SYMPTOM: • ABS does not operate. • VDC does not operate. WIRING DIAGRAM: BATTERY NO.
Page 205 DIAGNOSTICS CHART WITH SELECT MONITOR VDC (DIAGNOSTICS) Step Value 93 — 113 Ω CHECK RESISTANCE OF VALVE RELAY. Go to step 2. Replace valve 1) Turn ignition switch to OFF. relay. 2) Remove valve relay from relay box. 3) Measure resistance between valve relay terminals.
Page 206 DIAGNOSTICS CHART WITH SELECT MONITOR VDC (DIAGNOSTICS) Step Value CHECK POWER SUPPLY FOR VALVE RE- 10 — 15 V Go to step 8. Repair harness LAY. between battery 1) Disconnect connector (F89) from relay box. and relay box con- 2) Turn ignition switch to ON. nector.
Page 207 DIAGNOSTICS CHART WITH SELECT MONITOR VDC (DIAGNOSTICS) Step Value CHECK GROUND SHORT IN CONTROL 1 MΩ Go to step 13. Repair harness SYSTEM HARNESS OF VALVE RELAY. between VDCCM Measure resistance between VDCCM connec- and relay box. tor and chassis ground. Connector &...
Page 208 DIAGNOSTICS CHART WITH SELECT MONITOR VDC (DIAGNOSTICS) Step Value CHECK GROUND SHORT OF SOLENOID 1 MΩ Go to step 18. Replace VDCH/U VALVE. and check all Measure resistance between VDCH/U connec- fuses. <Ref. to tor and chassis ground. VDC-8, VDC Con- Connector &...
Page 209 DIAGNOSTICS CHART WITH SELECT MONITOR VDC (DIAGNOSTICS) Step Value CHECK VDCCM. Same DTC indicated. Replace VDCCM. Go to step 23. 1) Connect all connectors. <Ref. to VDC-8, 2) Erase the memory. VDC Control Mod- 3) Perform inspection mode. ule (VDCCM).> 4) Read out the diagnostic trouble code.
Page 210 DIAGNOSTICS CHART WITH SELECT MONITOR VDC (DIAGNOSTICS) AL:DTC 51 VALVE RELAY ON FAILURE DIAGNOSIS: • Faulty valve relay NOTE: When DTC 74 inspection is carried out, DTC 51 is memorized. TROUBLE SYMPTOM: • ABS does not operate. • VDC does not operate. WIRING DIAGRAM: BATTERY NO.
Page 211 DIAGNOSTICS CHART WITH SELECT MONITOR VDC (DIAGNOSTICS) Step Value 0.5 Ω CHECK CONTACT POINT OF VALVE RE- Go to step 2. Replace valve LAY. relay. 1) Turn ignition switch to OFF. 2) Remove valve relay from relay box. 3) Connect battery to valve relay terminals No.
Page 212 DIAGNOSTICS CHART WITH SELECT MONITOR VDC (DIAGNOSTICS) Step Value CHECK BATTERY SHORT IN CONTACT Go to step 8. Replace relay box. POINT CIRCUIT OF RELAY BOX. Check fuse No. 8 1) Turn ignition switch to ON. and SBF3. 2) Measure voltage between VDCH/U con- nector and chassis ground.
Page 213 DIAGNOSTICS CHART WITH SELECT MONITOR VDC (DIAGNOSTICS) Step Value CHECK BATTERY SHORT OF SOLENOID Go to step 13. Replace VDCH/U VALVE. and check all 1) Turn ignition switch to OFF. fuses. <Ref. to 2) Measure voltage between VDCH/U con- VDC-8, VDC Con- nector and chassis ground.
Page 214 DIAGNOSTICS CHART WITH SELECT MONITOR VDC (DIAGNOSTICS) Step Value CHECK POOR CONTACT IN CONNECTORS. There is poor contact. Repair connector. Go to step 17. Turn ignition switch to OFF. Is there poor contact in connector between VDCCM and VDCH/U? CHECK VDCCM. Same DTC indicated.
Page 215 DIAGNOSTICS CHART WITH SELECT MONITOR VDC (DIAGNOSTICS) MEMO: VDC-213...
Page 216 DIAGNOSTICS CHART WITH SELECT MONITOR VDC (DIAGNOSTICS) AM:DTC 52 MOTOR AND MOTOR RELAY OFF FAILURE DIAGNOSIS: • Faulty motor relay • Faulty harness connector TROUBLE SYMPTOM: • ABS does not operate. • VDC does not operate. WIRING DIAGRAM: BATTERY SBF-1 100A RELAY BOX VALVE RELAY MOTOR RELAY...
Page 217 DIAGNOSTICS CHART WITH SELECT MONITOR VDC (DIAGNOSTICS) Step Value CHECK CONTACT POINT OF MOTOR RE- 1 MΩ Go to step 2. Replace motor LAY. relay. 1) Turn ignition switch to OFF. 2) Remove motor relay from relay box. 3) Measure resistance between motor relay terminals.
Page 218 DIAGNOSTICS CHART WITH SELECT MONITOR VDC (DIAGNOSTICS) Step Value CHECK BATTERY SHORT IN HARNESS BE- Go to step 8. Repair harness TWEEN RELAY BOX AND VDCCM. between VDCCM Measure voltage between VDCCM connector and relay box. and chassis ground. Connector & terminal (F87) No.
Page 219 DIAGNOSTICS CHART WITH SELECT MONITOR VDC (DIAGNOSTICS) MEMO: VDC-217...
Page 220 DIAGNOSTICS CHART WITH SELECT MONITOR VDC (DIAGNOSTICS) AN:DTC 52 MOTOR AND MOTOR RELAY ON FAILURE DIAGNOSIS: • Faulty motor relay • Faulty harness connector TROUBLE SYMPTOM: • ABS does not operate. • VDC does not operate. WIRING DIAGRAM: BATTERY SBF-1 100A RELAY BOX VALVE RELAY MOTOR RELAY...
Page 221 DIAGNOSTICS CHART WITH SELECT MONITOR VDC (DIAGNOSTICS) Step Value 70 — 90 Ω CHECK RESISTANCE OF MOTOR RELAY. Go to step 2. Replace motor 1) Turn ignition switch to OFF. relay. 2) Remove motor relay from relay box. 3) Measure resistance between motor relay terminals.
Page 222 DIAGNOSTICS CHART WITH SELECT MONITOR VDC (DIAGNOSTICS) Step Value 0.5 Ω CHECK OPEN CIRCUIT IN CONTACT POINT Go to step 7. Replace relay box. CIRCUIT OF RELAY BOX. 1) Turn ignition switch to OFF. 2) Disconnect connectors (VDC2, F90) from relay box.
Page 223 DIAGNOSTICS CHART WITH SELECT MONITOR VDC (DIAGNOSTICS) Step Value CHECK BATTERY SHORT IN CIRCUIT OF Go to step 13. Replace relay box. RELAY BOX. 1) Turn ignition switch to ON. 2) Measure voltage between relay box con- nector and chassis ground. Connector &...
Page 224 DIAGNOSTICS CHART WITH SELECT MONITOR VDC (DIAGNOSTICS) Step Value CHECK ANY OTHER DIAGNOSTIC TROU- Other DTC indicated. Proceed with the A temporary poor BLE CODES APPEARANCE. diagnosis corre- contact. Are other diagnostic trouble codes being out- sponding to the put? diagnostic trouble code.
Page 225 DIAGNOSTICS CHART WITH SELECT MONITOR VDC (DIAGNOSTICS) MEMO: VDC-223...
Page 226 DIAGNOSTICS CHART WITH SELECT MONITOR VDC (DIAGNOSTICS) AO:DTC 52 MOTOR MALFUNCTION DIAGNOSIS: • Faulty motor • Faulty motor relay • Faulty harness connector TROUBLE SYMPTOM: • ABS does not operate. • VDC does not operate. WIRING DIAGRAM: BATTERY SBF-1 100A RELAY BOX VALVE RELAY MOTOR RELAY...
Page 227 DIAGNOSTICS CHART WITH SELECT MONITOR VDC (DIAGNOSTICS) Step Value 0.5 Ω CHECK CONTACT POINT OF MOTOR RE- Go to step 2. Replace motor LAY. relay. 1) Turn ignition switch to OFF. 2) Remove motor relay from relay box. 3) Connect battery to motor relay terminals No.
Page 228 DIAGNOSTICS CHART WITH SELECT MONITOR VDC (DIAGNOSTICS) Step Value CHECK VDCCM MOTOR DRIVE TERMINAL. Drop from 10 — 13 V to less Go to step 7. Replace VDCCM. 1) Turn ignition switch OFF. than 1.5 V, and rise to 10 — 13 <Ref.
Page 229 DIAGNOSTICS CHART WITH SELECT MONITOR VDC (DIAGNOSTICS) MEMO: VDC-227...
Page 230 DIAGNOSTICS CHART WITH SELECT MONITOR VDC (DIAGNOSTICS) AP:DTC 71 STEERING ANGLE SENSOR OFFSET IS TOO BIG. DIAGNOSIS: • Faulty steering angle sensor TROUBLE SYMPTOM: • VDC does not operate. WIRING DIAGRAM: B56 TCM STEERING ANGLE SENSOR B231 B234 B225 : RHD MODEL : LHD MODEL CONTROL MODULE...
Page 231 DIAGNOSTICS CHART WITH SELECT MONITOR VDC (DIAGNOSTICS) Step Value CHECK THE STEERING WHEEL. 5° Go to step 2. Perform centering 1) Drive the vehicle on a flat road. alignment of steer- 2) Stop the vehicle in a straight line. ing wheel. 3) Check the angle of steering wheel.
Page 232 DIAGNOSTICS CHART WITH SELECT MONITOR VDC (DIAGNOSTICS) AQ:DTC 71 CHANGE RANGE OF STEERING ANGLE SENSOR IS TOO BIG. DIAGNOSIS: • Faulty steering angle sensor TROUBLE SYMPTOM: • VDC does not operate. WIRING DIAGRAM: B56 TCM STEERING ANGLE SENSOR B231 B234 B225 : RHD MODEL : LHD MODEL...
Page 233 DIAGNOSTICS CHART WITH SELECT MONITOR VDC (DIAGNOSTICS) Step Value CHECK VDCCM. Same DTC indicated. Replace VDCCM. Go to step 2. 1) Turn ignition switch to OFF. <Ref. to VDC-8, 2) Connect all connectors. VDC Control Mod- 3) Erase the memory. ule (VDCCM).>...
Page 234 DIAGNOSTICS CHART WITH SELECT MONITOR VDC (DIAGNOSTICS) AR:DTC 71 STEERING ANGLE SENSOR MALFUNCTION DIAGNOSIS: • Faulty steering angle sensor TROUBLE SYMPTOM: • VDC does not operate. WIRING DIAGRAM: B56 TCM STEERING ANGLE SENSOR B231 B234 B225 : RHD MODEL : LHD MODEL CONTROL MODULE B231...
Page 235 DIAGNOSTICS CHART WITH SELECT MONITOR VDC (DIAGNOSTICS) Step Value CHECK THE STEERING WHEEL. 5° Go to step 2. Perform centering 1) Drive the vehicle on a flat road. alignment of steer- 2) Stop the vehicle in a straight line. ing. 3) Check the angle of steering wheel.
Page 236 DIAGNOSTICS CHART WITH SELECT MONITOR VDC (DIAGNOSTICS) AS:DTC 71 NO SIGNAL FROM STEERING ANGLE SENSOR DIAGNOSIS: • Faulty steering angle sensor TROUBLE SYMPTOM: • ABS does not operate. • VDC does not operate. WIRING DIAGRAM: B56 TCM STEERING ANGLE SENSOR B231 B234 B225...
Page 237 DIAGNOSTICS CHART WITH SELECT MONITOR VDC (DIAGNOSTICS) Step Value CHECK POWER SUPPLY OF STEERING AN- 10 — 15 V Go to step 4. Go to step 2. GLE SENSOR. 1) Turn ignition switch to OFF. 2) Disconnect connector from steering angle sensor.
Page 238 DIAGNOSTICS CHART WITH SELECT MONITOR VDC (DIAGNOSTICS) Step Value CHECK ANY OTHER DIAGNOSTIC TROU- Other DTC indicated. Proceed with the A temporary poor BLE CODES APPEARANCE. diagnosis corre- contact. Are other diagnostic trouble codes being out- sponding to the put? diagnostic trouble code.
Page 239 DIAGNOSTICS CHART WITH SELECT MONITOR VDC (DIAGNOSTICS) MEMO: VDC-237...
Page 240 DIAGNOSTICS CHART WITH SELECT MONITOR VDC (DIAGNOSTICS) AT:DTC 72 ABNORMAL YAW RATE SENSOR OUTPUT DIAGNOSIS: • Faulty yaw rate sensor TROUBLE SYMPTOM: • VDC does not operate. WIRING DIAGRAM: CONTROL MODULE R100 YAW RATE AND LATERAL G SENSOR R100 1 2 3 4 5 6 6 7 8 9 10 11 12 4 5 6...
Page 241 DIAGNOSTICS CHART WITH SELECT MONITOR VDC (DIAGNOSTICS) Step Value CHECK RUNNING FIELD. Driven. Driving on banked Go to step 2. Was the vehicle driven on banked road sur- road surfaces or faces or sandy surfaces (not dirt road sur- sandy surfaces faces)? (not dirt road sur- faces) sometimes...
Page 242 DIAGNOSTICS CHART WITH SELECT MONITOR VDC (DIAGNOSTICS) Step Value CHECK ANY OTHER DIAGNOSTIC TROU- Other DTC indicated. Proceed with the The original yaw BLE CODES APPEARANCE. diagnosis corre- rate and lateral G Are other diagnostic trouble codes being out- sponding to the sensor has been put? diagnostic trouble...
Page 243 DIAGNOSTICS CHART WITH SELECT MONITOR VDC (DIAGNOSTICS) MEMO: VDC-241...
Page 244 DIAGNOSTICS CHART WITH SELECT MONITOR VDC (DIAGNOSTICS) AU:DTC 72 VOLTAGE INPUTTED TO YAW RATE SENSOR EXCEEDS SPECIFI- CATION. DIAGNOSIS: • Faulty yaw rate sensor TROUBLE SYMPTOM: • VDC does not operate. WIRING DIAGRAM: CONTROL MODULE R100 YAW RATE AND LATERAL G SENSOR R100 1 2 3...
Page 245 DIAGNOSTICS CHART WITH SELECT MONITOR VDC (DIAGNOSTICS) Step Value CHECK POWER SUPPLY OF YAW RATE 10 — 15 V Go to step 4. Go to step 2. AND LATERAL G SENSOR. 1) Turn ignition switch OFF. 2) Disconnect connector from yaw rate and lateral G sensor.
Page 246 DIAGNOSTICS CHART WITH SELECT MONITOR VDC (DIAGNOSTICS) Step Value CHECK BATTERY SHORT OF HARNESS. 0.5 V Replace yaw rate Repair harness 1) Turn ignition switch to ON. and lateral G sen- between yaw rate 2) Measure voltage between VDCCM and sor.
Page 247 DIAGNOSTICS CHART WITH SELECT MONITOR VDC (DIAGNOSTICS) MEMO: VDC-245...
Page 248 DIAGNOSTICS CHART WITH SELECT MONITOR VDC (DIAGNOSTICS) AV:DTC 72 ABNORMAL YAW RATE SENSOR REFERENCE VOLTAGE DIAGNOSIS: • Faulty yaw rate sensor TROUBLE SYMPTOM: • VDC does not operate. WIRING DIAGRAM: CONTROL MODULE R100 YAW RATE AND LATERAL G SENSOR R100 1 2 3 4 5 6 6 7 8 9 10 11 12...
Page 249 DIAGNOSTICS CHART WITH SELECT MONITOR VDC (DIAGNOSTICS) Step Value CHECK POWER SUPPLY OF YAW RATE 10 — 15 V Go to step 4. Go to step 2. AND LATERAL G SENSOR. 1) Turn ignition switch OFF. 2) Disconnect connector from yaw rate and lateral G sensor.
Page 250 DIAGNOSTICS CHART WITH SELECT MONITOR VDC (DIAGNOSTICS) Step Value CHECK BATTERY SHORT OF HARNESS. 0.5 V Go to step 8. Repair harness 1) Turn ignition switch to ON. between yaw rate 2) Measure voltage between VDCCM and and lateral G sen- chassis ground.
Page 251 DIAGNOSTICS CHART WITH SELECT MONITOR VDC (DIAGNOSTICS) MEMO: VDC-249...
Page 252 DIAGNOSTICS CHART WITH SELECT MONITOR VDC (DIAGNOSTICS) AW:DTC 72 CHANGE RANGE OF YAW RATE SENSOR SIGNAL IS TOO BIG. DIAGNOSIS: • Faulty yaw rate sensor TROUBLE SYMPTOM: • VDC does not operate. WIRING DIAGRAM: CONTROL MODULE R100 YAW RATE AND LATERAL G SENSOR R100 1 2 3...
Page 253 DIAGNOSTICS CHART WITH SELECT MONITOR VDC (DIAGNOSTICS) Step Value CHECK RUNNING FIELD. Driven. When driving on Go to step 2. Was the vehicle driven on surfaces with holes surfaces with or bumps at high speeds? holes or bumps at high speeds, VDCCM some- times records trou- ble codes in...
Page 254 DIAGNOSTICS CHART WITH SELECT MONITOR VDC (DIAGNOSTICS) Step Value 0.5 Ω CHECK GROUND CIRCUIT OF VDCCM. Repair harness Go to step 8. 1) Disconnect connector from VDCCM. between yaw rate 2) Remove cover from VDCCM connector. and lateral G sen- <Ref.
Page 255 DIAGNOSTICS CHART WITH SELECT MONITOR VDC (DIAGNOSTICS) Step Value CHECK YAW RATE AND LATERAL G SEN- 2.1 — 2.9 V Replace VDCCM. Replace yaw rate SOR. <Ref. to VDC-8, and lateral G sen- 1) Turn ignition switch to OFF. VDC Control Mod- sor.
Page 256 DIAGNOSTICS CHART WITH SELECT MONITOR VDC (DIAGNOSTICS) AX:DTC 73 LATERAL G SENSOR OFFSET IS TOO BIG. NOTE: For diagnostic procedure, refer to DTC 73. <Ref. to VDC-256, DTC 73 EXCESSIVE LATERAL G SENSOR SIGNAL, Diagnostics Chart with Select Monitor.> AY:DTC 73 ABNORMAL LATERAL G SENSOR OUTPUT NOTE: For diagnostic procedure, refer to DTC 73.
Page 257 DIAGNOSTICS CHART WITH SELECT MONITOR VDC (DIAGNOSTICS) MEMO: VDC-255...
Page 258 DIAGNOSTICS CHART WITH SELECT MONITOR VDC (DIAGNOSTICS) BA:DTC 73 EXCESSIVE LATERAL G SENSOR SIGNAL DIAGNOSIS: • Faulty lateral G sensor TROUBLE SYMPTOM: • ABS does not operate. • VDC does not operate. WIRING DIAGRAM: CONTROL MODULE R100 YAW RATE AND LATERAL G SENSOR R100 1 2 3...
Page 259 DIAGNOSTICS CHART WITH SELECT MONITOR VDC (DIAGNOSTICS) Step Value CHECK INSTALLATION OF YAW RATE AND Fixed securely. Go to step 2. Install yaw rate LATERAL G SENSOR. and lateral G sen- Check installation of yaw rate and lateral G sor securely. sensor.
Page 260 DIAGNOSTICS CHART WITH SELECT MONITOR VDC (DIAGNOSTICS) BB:DTC 73 VOLTAGE INPUTTED TO LATERAL G SENSOR EXCEEDS SPECIFI- CATION. DIAGNOSIS: • Faulty lateral G sensor TROUBLE SYMPTOM: • ABS does not operate. • VDC does not operate. WIRING DIAGRAM: CONTROL MODULE R100 YAW RATE AND LATERAL G...
Page 261 DIAGNOSTICS CHART WITH SELECT MONITOR VDC (DIAGNOSTICS) Step Value CHECK OUTPUT OF YAW RATE AND LAT- 2.3 — 2.7 V Go to step 2. Go to step 5. ERAL G SENSOR USING SELECT MONI- TOR. 1) Stop the vehicle on a flat road. 2) Select “Current data display &...
Page 262 DIAGNOSTICS CHART WITH SELECT MONITOR VDC (DIAGNOSTICS) Step Value CHECK OPEN CIRCUIT IN YAW RATE AND 4.3 — 4.9 kΩ Go to step 8. Repair harness/ LATERAL G SENSOR OUTPUT HARNESS connector AND GROUND HARNESS. between yaw rate 1) Connect connector to yaw rate and lateral and lateral G sen- G sensor.
Page 263 DIAGNOSTICS CHART WITH SELECT MONITOR VDC (DIAGNOSTICS) Step Value CHECK POOR CONTACT IN CONNECTORS. There is poor contact. Repair connector. Go to step 13. Is there poor contact in connector between VDCCM and yaw rate and lateral G sensor? CHECK VDCCM. Same pattern.
Page 264 DIAGNOSTICS CHART WITH SELECT MONITOR VDC (DIAGNOSTICS) BC:DTC 74 VOLTAGE INPUTTED TO PRESSURE SENSOR 1 EXCEEDS SPECI- FICATION. (PRIMARY PRESSURE SENSOR) DIAGNOSIS: • Faulty primary pressure sensor TROUBLE SYMPTOM: • ABS does not operate. • VDC does not operate. WIRING DIAGRAM: CONTROL MODULE VDC5...
Page 265 DIAGNOSTICS CHART WITH SELECT MONITOR VDC (DIAGNOSTICS) Step Value 0.5 Ω CHECK GROUND CIRCUIT OF PRESSURE Go to step 4. Go to step 2. SENSOR. 1) Turn ignition switch to OFF. 2) Disconnect connector (F91) from VDCH/U. 3) Measure resistance between VDCH/U con- nector and chassis ground.
Page 266 DIAGNOSTICS CHART WITH SELECT MONITOR VDC (DIAGNOSTICS) Step Value CHECK GROUND SHORT OF HARNESS. 1 MΩ Go to step 8. Repair harness 1) Turn ignition switch to OFF. between VDCH/U 2) Disconnect connector from VDCCM. and VDCCM. 3) Measure resistance between VDCH/U con- nector and chassis ground.
Page 267 DIAGNOSTICS CHART WITH SELECT MONITOR VDC (DIAGNOSTICS) MEMO: VDC-265...
Page 268 DIAGNOSTICS CHART WITH SELECT MONITOR VDC (DIAGNOSTICS) BD:DTC 74 VOLTAGE INPUTTED TO PRESSURE SENSOR 2 EXCEEDS SPECI- FICATION. (SECONDARY PRESSURE SENSOR) DIAGNOSIS: • Faulty secondary pressure sensor TROUBLE SYMPTOM: • ABS does not operate. • VDC does not operate. WIRING DIAGRAM: CONTROL MODULE VDC5...
Page 269 DIAGNOSTICS CHART WITH SELECT MONITOR VDC (DIAGNOSTICS) Step Value 0.5 Ω CHECK GROUND CIRCUIT OF PRESSURE Go to step 4. Go to step 2. SENSOR. 1) Turn ignition switch to OFF. 2) Disconnect connector (F91) from VDCH/U. 3) Measure resistance between VDCH/U con- nector and chassis ground.
Page 270 DIAGNOSTICS CHART WITH SELECT MONITOR VDC (DIAGNOSTICS) Step Value CHECK GROUND SHORT OF HARNESS. 1 MΩ Go to step 8. Repair harness 1) Turn ignition switch to OFF. between VDCH/U 2) Disconnect connector from VDCCM. and VDCCM. 3) Measure resistance between VDCH/U con- nector and chassis ground.
Page 271 DIAGNOSTICS CHART WITH SELECT MONITOR VDC (DIAGNOSTICS) BE:DTC 74 PRESSURE SENSOR 1 OFFSET IS TOO BIG. (PRIMARY PRESSURE SENSOR) NOTE: For diagnostic procedure, refer to DTC 74. <Ref. to VDC-270, DTC 74 PRESSURE SENSOR 2 OFFSET IS TOO BIG. (SECONDARY PRESSURE SENSOR), Diagnostics Chart with Select Monitor.> VDC-269...
Page 272 DIAGNOSTICS CHART WITH SELECT MONITOR VDC (DIAGNOSTICS) BF:DTC 74 PRESSURE SENSOR 2 OFFSET IS TOO BIG. (SECONDARY PRES- SURE SENSOR) DIAGNOSIS: • Faulty pressure sensor TROUBLE SYMPTOM: • ABS does not operate. • VDC does not operate. WIRING DIAGRAM: CONTROL MODULE VDC5 VDC HYDRAULIC...
Page 273 DIAGNOSTICS CHART WITH SELECT MONITOR VDC (DIAGNOSTICS) Step Value CHECK DRIVING TECHNIC. Depressed. The VDC is nor- Go to step 2. Check the driver's technic. mal. Erase the Are the accelerator and brake pedals diagnostic trouble depressed simultaneously while driving? code.
Page 274 DIAGNOSTICS CHART WITH SELECT MONITOR VDC (DIAGNOSTICS) BG:DTC 74 DIFFERENTIAL PRESSURE OF PRESSURE SENSOR IS TOO BIG. DIAGNOSIS: • Faulty pressure sensor TROUBLE SYMPTOM: • ABS does not operate. • VDC does not operate. WIRING DIAGRAM: CONTROL MODULE VDC5 VDC HYDRAULIC UNIT 4 5 6 56 57...
Page 275 DIAGNOSTICS CHART WITH SELECT MONITOR VDC (DIAGNOSTICS) Step Value CHECK GROUND SHORT OF HARNESS. 1 MΩ Go to step 2. Repair harness 1) Turn ignition switch to OFF. between VDCH/U 2) Disconnect connector from VDCCM. and VDCCM. 3) Disconnect connector (F91) from VDCH/U. 4) Measure resistance between VDCH/U con- nector and chassis ground.
Page 276 DIAGNOSTICS CHART WITH SELECT MONITOR VDC (DIAGNOSTICS) Step Value CHECK BRAKE PEDAL STROKE. 95 mm (3.74 in) Go to step 8. Perform bleeding Measure the stroke between non-forced pedal from brake sys- position and forced pedal position with 50 kg tem.
Page 277: General Diagnostic Table
GENERAL DIAGNOSTIC TABLE VDC (DIAGNOSTICS) 15.General Diagnostic Table A: INSPECTION Symptom Primary probable cause Secondary probable cause Poor braking Long braking VDCH/U Faulty ABS sensor or sensor gap effectiveness distance VDCCM Faulty steering angle sensor or improper neutral Brake pads position Air in brake line Faulty yaw rate and lateral G sensor or improper...
Page 278 GENERAL DIAGNOSTIC TABLE VDC (DIAGNOSTICS) Symptom Primary probable cause Secondary probable cause Vibration and/or Excessive Uneven road VDCH/U noise brake pedal Incorrect wiring or piping Proportioning valve • During abrupt vibration Brake booster braking Suspension play or fatigue (reduced damping) •...
Page 279 GENERAL DIAGNOSTIC TABLE VDC (DIAGNOSTICS) Symptom Primary probable cause Secondary probable cause Poor TCS's Deviation in VDCH/U Proportioning valve directional either left or VDCCM Disc rotor operation stabil- right direction Faulty ABS sensor or sensor gap Brake pipe Faulty steering angle sensor or improper Axle &...
Page 280 GENERAL DIAGNOSTIC TABLE VDC (DIAGNOSTICS) MEMO: VDC-278...

Subaru LEGACY 2003 Service Manual

Quick Links

Related Manuals for Subaru LEGACY 2003

Summary of Contents for Subaru LEGACY 2003

Table of Contents