PROCEDURE
| CAUTION | Remove foreign matter (dust, water, oil etc.) from the VDCCM & H/U connector during removal and installation. |
Note. To check the harness for open or short circuits, shake problem spot or connector. Refer to "Check List for Interview". < Ref. to CHECK LIST FOR INTERVIEW . >
| Step | Check | Yes | No |
|---|---|---|---|
| 1 CHECK PRE-INSPECTION. Ask the customer when and how the trouble occurred using the interview check list. < Ref. to CHECK LIST FOR INTERVIEW . > Before performing diagnostics, check the component which might affect VDC problems. < Ref. to INSPECTION , General Description. > | Is the component that might influence the VDC problem normal? | Go to step 2 . | Repair or replace each component. |
| 2 CHECK INDICATION OF DTC. Turn the ignition switch to OFF. Connect the Subaru Select Monitor to data link connector. Turn the ignition switch to ON and run the Subaru Select Monitor. Read the DTC using the Subaru Select Monitor. < Ref. to OPERATION , Read Diagnostic Trouble Code (DTC). > NOTE: If the communication function of the Subaru Select Monitor cannot be executed properly, check the communication circuit. < Ref. to COMMUNICATION FOR INITIALIZING IMPOSSIBLE , INSPECTION, Subaru Select Monitor. > | Is DTC displayed on Subaru Select Monitor? | Record the DTC, time stamp and freeze frame data. Go to step 4 . NOTE: For the time stamp, refer to LAN section. < Ref. to TIME STAMP , CAUTION, General Description. > Depending on DTCs, time stamp may not be stored. | Go to step 3 . |
| 3 PERFORM GENERAL DIAGNOSTICS. Perform the inspection by referring to "General Diagnostic Table". < Ref. to INSPECTION , General Diagnostic Table. > Perform the Clear Memory Mode. < Ref. to OPERATION , Clear Memory Mode. > Perform the Inspection Mode. < Ref. to PROCEDURE , Inspection Mode. > Read the DTC. < Ref. to OPERATION , Read Diagnostic Trouble Code (DTC). > Check the DTC is not displayed. | Do the VDC warning light & VDC indicator light, VDC OFF indicator light and ABS warning light go off after starting the engine? | Finish the diagnosis. | Check the combination meter circuit. < Ref. to ABS WARNING LIGHT DOES NOT GO OFF , Warning Light Illumination Pattern. > < Ref. to VDC WARNING LIGHT AND VDC INDICATOR LIGHT DO NOT GO OFF , Warning Light Illumination Pattern. > < Ref. to VDC OFF INDICATOR LIGHT DOES NOT GO OFF , Warning Light Illumination Pattern. > |
| 4 PERFORM DIAGNOSIS. Refer to "List of Diagnostic Trouble Code (DTC)". NOTE: For the DTC list, refer to "List of Diagnostic Trouble Code (DTC)". < Ref. to LIST , List of Diagnostic Trouble Code (DTC). > Correct the cause of trouble. Perform the Clear Memory Mode. < Ref. to OPERATION , Clear Memory Mode. > Perform the Inspection Mode. < Ref. to PROCEDURE , Inspection Mode. > Read the DTC. < Ref. to OPERATION , Read Diagnostic Trouble Code (DTC). > | Is DTC displayed? | Repeat step 4 until DTC is not shown. | Finish the diagnosis. |
| NOTE |
|---|
| If the communication function of the Subaru Select Monitor cannot be executed properly, check the communication circuit. < Ref. to COMMUNICATION FOR INITIALIZING IMPOSSIBLE , INSPECTION, Subaru Select Monitor. > |
| NOTE |
|---|
| For the time stamp, refer to LAN section. < Ref. to TIME STAMP , CAUTION, General Description. > Depending on DTCs, time stamp may not be stored. |
| NOTE |
|---|
| For the DTC list, refer to "List of Diagnostic Trouble Code (DTC)". < Ref. to LIST , List of Diagnostic Trouble Code (DTC). > |
CHECK
Check the following item about the vehicle's state.
Scheme 88
Scheme 89
Scheme 90
Scheme 91
Scheme 92
SUPPLEMENTAL RESTRAINT SYSTEM "AIRBAG"
Airbag system wiring harness is routed near the ABS wheel speed sensor and VDCCM & H/U.
| CAUTION | Do not use the electrical test equipment on the airbag system wiring harnesses and connector circuits. Be careful not to damage the airbag system wiring harness when servicing the ABS wheel speed sensor and VDCCM & H/U. |
BATTERY
Measure the battery voltage and check electrolyte.
Standard voltage
12 V or more
Specific gravity
1.260 or more
GROUND
Check the installation of the ground bolt for VDC.
HYDRAULIC UNIT
Check the hydraulic unit.
- When using the brake tester < Ref. to «CHECKING THE HYDRAULIC UNIT ABS OPERATION WITH THE BRAKE TESTER»(ref-662135-S10845457102014101300000) , INSPECTION, VDC Control Module and Hydraulic Control Unit (VDCCM & H/U). >
- When not using the brake tester < Ref. to «CHECKING THE HYDRAULIC UNIT ABS OPERATION BY PRESSURE GAUGE»(ref-662135-S01576332632014101300000) , INSPECTION, VDC Control Module and Hydraulic Control Unit (VDCCM & H/U). >
BRAKE DRAG
Check for brake drag.
BRAKE PAD AND ROTOR
Check the brake pad and rotor.
- Front < Ref. to «INSPECTION»(ref-662128-S30603212782014101300000) , Front Brake Pad. > < Ref. to «INSPECTION»(ref-662128-S16663549442014101300000) , Front Disc Rotor. >
- Rear < Ref. to «INSPECTION»(ref-662128-S38998734322014101300000) , Rear Brake Pad. > < Ref. to «INSPECTION»(ref-662128-S28562583032014101300000) , Rear Disc Rotor. >
TIRE
Check the tire specifications, tire wear and air pressure. < Ref. to SPECIFICATION , General Description. >
GENERAL TOOL
| TOOL NAME | REMARKS |
|---|---|
| Circuit tester | Used for measuring resistance, voltage and current. |
| Oscilloscope | Used for measuring the sensor. |
Scheme 93
Scheme 94
Scheme 95
Note. Terminal numbers in VDCCM & H/U connector are shown in the figure. When the connector is removed from the VDCCM & H/U, the brake warning light (EBD warning light), ABS warning light, VDC warning light & VDC indicator light, VDC OFF indicator light, and the hill start assist warning light illuminate.
| Content | Terminal No. (+) - (-) | Input/Output signal | ||
|---|---|---|---|---|
| Measured value and measuring conditions | ||||
| Power supply | 4 - 14 | 10 - 15 V when the ignition switch is ON. | ||
| ABS wheel speed sensor | Front LH wheel | Power supply | 20 - 14 | 0 - 18 V |
| Signal | 8 | 7 - 14 mA: Rectangle waveform | ||
| Front RH wheel | Power supply | 17 - 14 | 0 - 18 V | |
| Signal | 29 | 7 - 14 mA: Rectangle waveform | ||
| Rear LH wheel | Power supply | 7 - 14 | 0 - 18 V | |
| Signal | 19 | 7 - 14 mA: Rectangle waveform | ||
| Rear RH wheel | Power supply | 18 - 14 | 0 - 18 V | |
| Signal | 5 | 7 - 14 mA: Rectangle waveform | ||
| CAN communication line (H) | 2 | 2.75 - 4.5 V pulse signal | ||
| CAN communication line (L) | 15 | 0.5 - 2.25 V pulse signal | ||
| Valve relay power supply | 1 - 14 | 10 - 15 V when the ignition switch is ON. | ||
| Motor relay power supply | 26 - 38 | 10 - 15 V when the ignition switch is ON. | ||
| Brake light relay power supply (model with X MODE and model with EyeSight) | 28 - 14 | 10 - 15 V when the ignition switch is ON. | ||
| Stop light switch | 6 - 14 | 1.5 V or less when the stop light is OFF; otherwise, 10 - 15 V when the stop light is ON. | ||
| Vehicle speed output signal | 27 | 0 <----> 12 V pulse | ||
| VDC OFF switch | 37 - 14 | 1 ohms or less when the OFF switch is "ON"; 1 Mohms or more when the switch is "OFF". | ||
| Ground | 14 | |||
| Ground | 38 | |||
Scheme 96
HOW TO USE THE SUBARU SELECT MONITOR
For detailed operation procedures, refer to "PC application help for Subaru Select Monitor".
READ CURRENT DATA
For detailed operation procedures, refer to "PC application help for Subaru Select Monitor".
| Display | Contents to be displayed | Unit of measure |
|---|---|---|
| FR Wheel Speed | Wheel speed detected by front ABS wheel speed sensor RH is displayed. | Km/h or MPH |
| FL Wheel Speed | Wheel speed detected by front ABS wheel speed sensor LH is displayed. | Km/h or MPH |
| RR Wheel Speed | Wheel speed detected by rear ABS wheel speed sensor RH is displayed. | Km/h or MPH |
| RL Wheel Speed | Wheel speed detected by rear ABS wheel speed sensor LH is displayed. | Km/h or MPH |
| Steering Angle Sensor | Steering angle detected by steering angle sensor is displayed. | Deg |
| Yaw Rate Sensor | Vehicle angular speed detected by yaw rate sensor is displayed. | Deg/s |
| Pressure Sensor | Brake fluid pressure detected by pressure sensor is displayed. | Bar |
| Longitudinal G Sensor | Vehicle longitudinal acceleration detected by longitudinal G sensor is displayed. | M/s 2 |
| Lateral G Sensor | Vehicle lateral acceleration detected by lateral G sensor is displayed. | M/s 2 |
| Voltage of IGN | Voltage supplied to VDCCM & H/U is displayed. | V |
| M. Relay monitor Voltage | Voltage applied to the motor relay is displayed. | V |
| FL wheel cylinder pressure sensor output | FL wheel cylinder brake fluid pressure detected by pressure sensor is displayed. | Bar |
| FR wheel cylinder pressure sensor output | FR wheel cylinder brake fluid pressure detected by pressure sensor is displayed. | Bar |
| Motor Relay Signal | Motor relay driving signal is displayed. | ON or OFF |
| Valve Relay Signal | Valve relay driving signal is displayed. | ON or OFF |
| EBD Warning Light | ON operation of the EBD warning light is displayed. | ON or OFF |
| ABS Warning Lamp | ON operation of the ABS warning light is displayed. | ON or OFF |
| VDC Warning Lamp | ON operation of the VDC warning light is displayed. | ON or OFF |
| EBD Control Flag | EBD operation condition is displayed. | ON or OFF |
| ABS Control Flag | ABS operation condition is displayed. | ON or OFF |
| TCS Control Flag | TCS operation condition is displayed. | ON or OFF |
| VDC Control Flag | VDC operation condition is displayed. | ON or OFF |
| E/G Control Stop Flag | Engine control command signal is displayed. | 1 or 0 |
| Stop-lamp relay drive signal | Brake light relay driving signal is displayed. | ON or OFF |
| X Mode | The status of X MODE is displayed. | ON or OFF |
| VDC-OFF Light | ON/OFF condition of VDC OFF indicator light is displayed. | ON or OFF |
| OFF SW Signal | Operation condition of VDC OFF switch is displayed. | ON or OFF |
| Brake Light Switch | Brake ON/OFF is displayed. | ON or OFF |
| Clutch Switch | Clutch ON/OFF is displayed. (For MT model only. For AT model: OFF fixed) | ON or OFF |
| Reverse Signal | Reverse gear ON/OFF is displayed. (For MT model only. For AT model: OFF fixed) | ON or OFF |
FUNCTION CHECK
| Display | Contents of display | Index No. |
|---|---|---|
| ABS Sequence Control Mode | Operate the valve and pump motor continuously to perform the ABS sequence control. | < Ref. to ABS SEQUENCE CONTROL . > |
| VDC Check Mode | Operate the valve and pump motor continuously to perform the VDC sequence control. | < Ref. to VDC SEQUENCE CONTROL . > |
| VSC(VDC) Centering Mode | Set the steering angle sensor neutral position, and the lateral G sensor and longitudinal G sensor "0" point. | < Ref. to VDC SENSOR MIDPOINT SETTING MODE , ADJUSTMENT, VDC Control Module and Hydraulic Control Unit (VDCCM & H/U). > |
| Brake Lamp Lighting Operation Mode | Activate the brake light relay to illuminate the brake light. | < Ref. to BRAKE LAMP LIGHTING OPERATION MODE BY SUBARU SELECT MONITOR , OPERATION, Brake Lamp Relay. > |
READ FREEZE FRAME DATA
Note. Freeze frame data stored at the time of trouble occurrence is shown on the display. Each time a trouble occurs, the latest information is stored in the freeze frame data in memory.
| Display | Contents to be displayed | Unit of measure |
|---|---|---|
| Classification | Recorded trouble code is displayed. | |
| FR Wheel Speed | Wheel speed detected by front ABS wheel speed sensor RH is displayed. | Km/h or MPH |
| FL Wheel Speed | Wheel speed detected by front ABS wheel speed sensor LH is displayed. | Km/h or MPH |
| RR Wheel Speed | Wheel speed detected by rear ABS wheel speed sensor RH is displayed. | Km/h or MPH |
| RL Wheel Speed | Wheel speed detected by rear ABS wheel speed sensor LH is displayed. | Km/h or MPH |
| Vehicle Speed | Vehicle speed calculated by VDC control module is displayed. | Km/h or MPH |
| Steering Angle Sensor | Steering angle detected by steering angle sensor is displayed. | Deg |
| Yaw Rate Sensor | Vehicle angular speed detected by yaw rate sensor is displayed. | Deg/s |
| Pressure Sensor | Brake fluid pressure detected by pressure sensor is displayed. | Bar |
| Longitudinal G Sensor | Vehicle longitudinal acceleration detected by longitudinal G sensor is displayed. | M/s 2 |
| Lateral G Sensor | Vehicle lateral acceleration detected by lateral G sensor is displayed. | M/s 2 |
| Voltage of IGN | Voltage supplied to VDC control module is displayed. | V |
| Accelerator Pedal Position | Accelerator pedal opening angle is displayed. | % |
| Engine Speed | Engine speed on malfunction occurrence is displayed. | Rpm |
| FL wheel cylinder pressure sensor output | FL wheel cylinder brake fluid pressure detected by pressure sensor is displayed. | Bar |
| FR wheel cylinder pressure sensor output | FR wheel cylinder brake fluid pressure detected by pressure sensor is displayed. | Bar |
| Steering angle flag | Whether the absolute angle of the steering angle sensor was determined is displayed. | Recognized or No recognition |
| EBD Control Flag | EBD control condition is displayed. | ON or OFF |
| ABS Control Flag | ABS control condition is displayed. | ON or OFF |
| TCS Control Flag | TCS control condition is displayed. | ON or OFF |
| VDC Control Flag | VDC control condition is displayed. | ON or OFF |
| E/G Control Stop Flag | Engine control command signal is displayed. | 1 or 0 |
| X Mode | The status of X MODE is displayed. | ON or OFF |
| OFF Switch Detection | ON/OFF condition of the VDC operated by the driver is displayed. | ON or OFF |
| Brake Light Switch | Brake ON/OFF is displayed. | ON or OFF |
| Clutch Switch | Clutch ON/OFF is displayed. (For MT model only. For AT model: OFF fixed) | ON or OFF |
| Reverse Signal | Reverse gear ON/OFF is displayed. (For MT model only. For AT model: OFF fixed) | ON or OFF |
PARAMETER SELECTION
| CAUTION | Subaru Select Monitor is required for parameter selection. This function can be used for the replacement part of VDCCM & H/U. |
Note. When the VDCCM & H/U is replaced with a replacement part, be sure to perform the parameter selection/registration to the VDCCM & H/U using this function. To check the applied model, refer to the "Model number plate" attached to the vehicle. < Ref. to IDENTIFICATION , Identification. > If you entered a wrong applied model, you can re-write it. When the registration has not been performed, the DTC code "Parameter" is detected together with the ABS/EBD/VDC warning light illumination.
- Connect the Subaru Select Monitor.
- On «Main Menu» display, select {Each System Check}.
- On «System Selection Menu» display, select {Brake Control System}.
- When {VDC} is displayed, select the [OK] button.
- On «Brake Control Diagnosis» display, select {Work Support}.
- On «Work Support» display, select {Select Parameter}.
- Check the applied model and option code indicated on the "Model number plate". < Ref. to «IDENTIFICATION»(ref-662102-S27756700692014101300000) , Identification. >
- Enter the applied model of 7-digit alphanumeric characters and press the [Enter] key.
- When the option code input screen appears after entering the applied model, enter the option code consisting of 4-digit alphanumeric characters, and press the [Enter] key When the option code is 3 digits, add "0" (zero) in front and enter the code as 4 digits.
- When the confirmation screen indicating the vehicle information appears, check that the correct applied model and grade are displayed and click the [OK] button. NOTE: When the displayed applied model and grade are different from those of the vehicle, perform registration operations again after clicking the [OK] button.
- Execute the Clear Memory Mode after parameter selection and registration operations because the DTC for "Parameter selection error" is memorized. < Ref. to «CLEAR MEMORY MODE»(ref-662151-S40115467402014101300000) . >
PARAMETER CHECK
Note. The parameter data registered in the VDC Control Module is shown on the display.
- Connect the Subaru Select Monitor.
- On «Main Menu» display, select {Each System Check}.
- On «System Selection Menu» display, select {Brake Control System}.
- When {VDC} is displayed, select the [OK] button.
- On «Brake Control Diagnosis» display, select {Work Support}.
- On «Work Support» display, select {Confirm on parameter}.
- On the {Confirm on parameter} display screen, check that the applied model and grade of the target vehicle are included, and click the [OK] button.
- If the applied model and grade of the target vehicle are not included on the {Confirm on parameter} display screen, perform "parameter selection and registration". < Ref. to «PARAMETER SELECTION»(ref-662151-S24961083102014101300000) , OPERATION, Subaru Select Monitor. >
DETECTING CONDITION
Defective harness connector
Reproduce the malfunction occurrence condition as much as possible.
Drive the vehicle at least ten minutes.
Note. Make sure the vehicle is not dragged to one side under usual driving condition.
Defective combination meter
Defective combination meter
- Defective combination meter
- Defective engine
- Defective CAN communication
- Defective combination meter
- Defective engine
- Defective CAN communication
- Defective combination meter
- Defective CAN communication
- VDC OFF switch is shorted.
- Defective combination meter
- Defective CAN communication
- Brake warning light circuit is shorted.
- Defective sensor/connector
- Defective CAN communication
LIST
| DTC | Item | Content of diagnosis | Reference |
|---|---|---|---|
| C1211 | FR Wheel Speed Sensor System Wire Break/Excessive | Input Open/high input of front ABS wheel speed sensor RH | < Ref. to DTC C1211: FR WHEEL SPEED SENSOR SYSTEM WIRE BREAK/EXCESSIVE INPUT , Diagnostic Procedure with Diagnostic Trouble Code (DTC). > |
| C1212 | FR Wheel Speed Sensor System | Front ABS wheel speed sensor RH signal malfunction | < Ref. to DTC C1212: FR WHEEL SPEED SENSOR SYSTEM , Diagnostic Procedure with Diagnostic Trouble Code (DTC). > |
| C1221 | FL Wheel Speed Sensor System Wire Break/Excessive | Input Open/high input of front ABS wheel speed sensor LH | < Ref. to DTC C1221: FL WHEEL SPEED SENSOR SYSTEM WIRE BREAK/EXCESSIVE INPUT , Diagnostic Procedure with Diagnostic Trouble Code (DTC). > |
| C1222 | FL Wheel Speed Sensor System | Front ABS wheel speed sensor LH signal malfunction | < Ref. to DTC C1222: FL WHEEL SPEED SENSOR SYSTEM , Diagnostic Procedure with Diagnostic Trouble Code (DTC). > |
| C1231 | RR Wheel Speed Sensor System Wire Break/Excessive | Input Open/high input of rear ABS wheel speed sensor RH | < Ref. to DTC C1231: RR WHEEL SPEED SENSOR SYSTEM WIRE BREAK/EXCESSIVE INPUT , Diagnostic Procedure with Diagnostic Trouble Code (DTC). > |
| C1232 | RR Wheel Speed Sensor System | Rear ABS wheel speed sensor RH signal malfunction | < Ref. to DTC C1232: RR WHEEL SPEED SENSOR SYSTEM , Diagnostic Procedure with Diagnostic Trouble Code (DTC). > |
| C1241 | RL Wheel Speed Sensor System Wire Break/Excessive | Input Open/high input of rear ABS wheel speed sensor LH | < Ref. to DTC C1241: RL WHEEL SPEED SENSOR SYSTEM WIRE BREAK/EXCESSIVE INPUT , Diagnostic Procedure with Diagnostic Trouble Code (DTC). > |
| C1242 | RL Wheel Speed Sensor System | Rear ABS wheel speed sensor LH signal malfunction | < Ref. to DTC C1242: RL WHEEL SPEED SENSOR SYSTEM , Diagnostic Procedure with Diagnostic Trouble Code (DTC). > |
| C1251 | Wheel Speed Sensor System | Wheel speed sensor malfunction | < Ref. to DTC C1251: WHEEL SPEED SENSOR SYSTEM , Diagnostic Procedure with Diagnostic Trouble Code (DTC). > |
| C1252 | Wheel Speed Sensor Signal of One of The Wheels | ABS wheel speed sensor signal malfunction in one of four wheels | < Ref. to DTC C1252: WHEEL SPEED SENSOR SIGNAL OF ONE OF THE WHEELS , Diagnostic Procedure with Diagnostic Trouble Code (DTC). > |
| C1311 | FR Inlet Solenoid Valve System | Front inlet solenoid valve RH malfunction in VDCCM & H/U | < Ref. to DTC C1311: FR INLET SOLENOID VALVE SYSTEM , Diagnostic Procedure with Diagnostic Trouble Code (DTC). > |
| C1312 | FR Outlet Solenoid Valve System | Front outlet solenoid valve RH malfunction in VDCCM & H/U | < Ref. to DTC C1312: FR OUTLET SOLENOID VALVE SYSTEM , Diagnostic Procedure with Diagnostic Trouble Code (DTC). > |
| C1321 | FL Inlet Solenoid Valve System | Front inlet solenoid valve LH malfunction in VDCCM & H/U | < Ref. to DTC C1321: FL INLET SOLENOID VALVE SYSTEM , Diagnostic Procedure with Diagnostic Trouble Code (DTC). > |
| C1322 | FL Outlet Solenoid Valve System | Front outlet solenoid valve LH malfunction in VDCCM & H/U | < Ref. to DTC C1322: FL OUTLET SOLENOID VALVE SYSTEM , Diagnostic Procedure with Diagnostic Trouble Code (DTC). > |
| C1331 | RR Inlet Solenoid Valve System | Rear inlet solenoid valve RH malfunction in VDCCM & H/U | < Ref. to DTC C1331: RR INLET SOLENOID VALVE SYSTEM , Diagnostic Procedure with Diagnostic Trouble Code (DTC). > |
| C1332 | RR Outlet Solenoid Valve System | Rear outlet solenoid valve RH malfunction in VDCCM & H/U | < Ref. to DTC C1332: RR OUTLET SOLENOID VALVE SYSTEM , Diagnostic Procedure with Diagnostic Trouble Code (DTC). > |
| C1341 | RL Inlet Solenoid Valve System | Rear inlet solenoid valve LH malfunction in VDCCM & H/U | < Ref. to DTC C1341: RL INLET SOLENOID VALVE SYSTEM , Diagnostic Procedure with Diagnostic Trouble Code (DTC). > |
| C1342 | RL Outlet Solenoid Valve System | Rear outlet solenoid valve LH malfunction in VDCCM & H/U | < Ref. to DTC C1342: RL OUTLET SOLENOID VALVE SYSTEM , Diagnostic Procedure with Diagnostic Trouble Code (DTC). > |
| C1351 | VDC Change-Over Valve 1 (P) | Primary cut valve malfunction in VDCCM & H/U | < Ref. to DTC C1351: VDC CHANGE-OVER VALVE 1 (P) , Diagnostic Procedure with Diagnostic Trouble Code (DTC). > |
| C1352 | VDC Change-Over Valve 1 (S) | Secondary cut valve malfunction in VDCCM & H/U | < Ref. to DTC C1352: VDC CHANGE-OVER VALVE 1 (S) , Diagnostic Procedure with Diagnostic Trouble Code (DTC). > |
| C1361 | VDC Change-Over Valve 2 (P) | Primary suction valve malfunction in VDCCM & H/U | < Ref. to DTC C1361: VDC CHANGE-OVER VALVE 2 (P) , Diagnostic Procedure with Diagnostic Trouble Code (DTC). > |
| C1362 | VDC Change-Over Valve 2 (S) | Secondary suction valve malfunction in VDCCM & H/U | < Ref. to DTC C1362: VDC CHANGE-OVER VALVE 2 (S) , Diagnostic Procedure with Diagnostic Trouble Code (DTC). > |
| C1411 | ECU | VDC control module malfunction | < Ref. to DTC C1411: ECU , Diagnostic Procedure with Diagnostic Trouble Code (DTC). > |
| C1412 | Parameter | VDC control module parameter failure | < Ref. to DTC C1412: PARAMETER , Diagnostic Procedure with Diagnostic Trouble Code (DTC). > |
| C1413 | Power Supply Volt Error | Power voltage malfunction | < Ref. to DTC C1413: POWER SUPPLY VOLT ERROR , Diagnostic Procedure with Diagnostic Trouble Code (DTC). > |
| C1421 | ECM Control System | Prohibition of coordinate control for engine control module | < Ref. to DTC C1421: ECM CONTROL SYSTEM , Diagnostic Procedure with Diagnostic Trouble Code (DTC). > |
| C1422 | VDC Interruption for Engine Convenience | VDC interrupted due to some reasons of the engine | < Ref. to DTC C1422: VDC INTERRUPTION FOR ENGINE CONVENIENCE , Diagnostic Procedure with Diagnostic Trouble Code (DTC). > |
| C1423 | Different ECU Specifications | Different VDC control module specification | < Ref. to DTC C1423: DIFFERENT ECU SPECIFICATIONS , Diagnostic Procedure with Diagnostic Trouble Code (DTC). > |
| C1424 | ECM Failure | Engine control module is faulty | < Ref. to DTC C1424: ECM FAILURE , Diagnostic Procedure with Diagnostic Trouble Code (DTC). > |
| C1431 | AT Abnormal | Transmission control module is faulty | < Ref. to DTC C1431: AT ABNORMAL , Diagnostic Procedure with Diagnostic Trouble Code (DTC). > |
| C1432 | Different ECU Specifications | Different VDC control module specification | < Ref. to DTC C1432: DIFFERENT ECU SPECIFICATIONS , Diagnostic Procedure with Diagnostic Trouble Code (DTC). > |
| C1441 | EyeSight Request Pressure Abnormal | EyeSight system malfunction | < Ref. to DTC C1441: EYESIGHT REQUEST PRESSURE ABNORMAL , Diagnostic Procedure with Diagnostic Trouble Code (DTC). > |
| C1511 | Valve Relay | Defective valve relay | < Ref. to DTC C1511: VALVE RELAY , Diagnostic Procedure with Diagnostic Trouble Code (DTC). > |
| C1512 | Valve System | Defective valve system | < Ref. to DTC C1512: VALVE SYSTEM , Diagnostic Procedure with Diagnostic Trouble Code (DTC). > |
| C1521 | Motor Relay | Motor relay malfunction | < Ref. to DTC C1521: MOTOR RELAY , Diagnostic Procedure with Diagnostic Trouble Code (DTC). > |
| C1531 | BLS Off Fault | Stop light switch malfunction | < Ref. to DTC C1531: BLS OFF FAULT , Diagnostic Procedure with Diagnostic Trouble Code (DTC). > |
| C1532 | BLS On Fault | Stop light switch malfunction | < Ref. to DTC C1532: BLS ON FAULT , Diagnostic Procedure with Diagnostic Trouble Code (DTC). > |
| C1541 | Clutch Off Fault | Clutch signal malfunction | < Ref. to DTC C1541: CLUTCH OFF FAULT , Diagnostic Procedure with Diagnostic Trouble Code (DTC). > |
| C1542 | Clutch On Fault | Clutch signal malfunction | < Ref. to DTC C1542: CLUTCH ON FAULT , Diagnostic Procedure with Diagnostic Trouble Code (DTC). > |
| C1561 | Reverse Off Fault | Reverse signal malfunction | < Ref. to DTC C1561: REVERSE OFF FAULT , Diagnostic Procedure with Diagnostic Trouble Code (DTC). > |
| C1562 | Reverse On Fault | Reverse signal malfunction | < Ref. to DTC C1562: REVERSE ON FAULT , Diagnostic Procedure with Diagnostic Trouble Code (DTC). > |
| C1571 | Brake Lamp Relay OFF Malfunction | Brake light relay malfunction | < Ref. to DTC C1571: BRAKE LAMP RELAY OFF MALFUNCTION , Diagnostic Procedure with Diagnostic Trouble Code (DTC). > |
| C1572 | Brake Lamp Relay ON Malfunction | Brake light relay malfunction | < Ref. to DTC C1572: BRAKE LAMP RELAY ON MALFUNCTION , Diagnostic Procedure with Diagnostic Trouble Code (DTC). > |
| C1711 | Steering Angle Sensor Abnormal | Steering angle sensor malfunction | < Ref. to DTC C1711: STEERING ANGLE SENSOR ABNORMAL , Diagnostic Procedure with Diagnostic Trouble Code (DTC). > |
| C1721 | Yaw Rate Sensor Abnormal | Defective yaw rate sensor | < Ref. to DTC C1721: YAW RATE SENSOR ABNORMAL , Diagnostic Procedure with Diagnostic Trouble Code (DTC). > |
| C1731 | G Sensor Abnormal | Defective G sensor | < Ref. to DTC C1731: G SENSOR ABNORMAL , Diagnostic Procedure with Diagnostic Trouble Code (DTC). > |
| C1732 | Lateral G Sensor Abnormal | Defective lateral G sensor | < Ref. to DTC C1732: LATERAL G SENSOR ABNORMAL , Diagnostic Procedure with Diagnostic Trouble Code (DTC). > |
| C1733 | Longitudinal G Sensor Abnormal | Defective longitudinal G sensor | < Ref. to DTC C1733: LONGITUDINAL G SENSOR ABNORMAL , Diagnostic Procedure with Diagnostic Trouble Code (DTC). > |
| C1741 | Pressure Sensor | Defective pressure sensor | < Ref. to DTC C1741: PRESSURE SENSOR , Diagnostic Procedure with Diagnostic Trouble Code (DTC). > |
| C1742 | W/C Pressure Sensor | Defective pressure sensor | < Ref. to DTC C1742: W/C PRESSURE SENSOR , Diagnostic Procedure with Diagnostic Trouble Code (DTC). > |
| C1811 | System Failure | System malfunction | < Ref. to DTC C1811: SYSTEM FAILURE , Diagnostic Procedure with Diagnostic Trouble Code (DTC). > |
| C1821 | Brake Temperature Abnormal | Malfunction in VDCCM & H/U | < Ref. to DTC C1821: BRAKE TEMPERATURE ABNORMAL , Diagnostic Procedure with Diagnostic Trouble Code (DTC). > |
| U0073 | Control Module Communication Bus "A" Off | Defective CAN communication | < Ref. to DTC U0073: CONTROL MODULE COMMUNICATION BUS "A" OFF , Diagnostic Procedure with Diagnostic Trouble Code (DTC). > |
| U0100 | Lost Communication With ECM/PCM "A" | Defective CAN communication | < Ref. to DTC U0100: LOST COMMUNICATION WITH ECM/PCM "A" , Diagnostic Procedure with Diagnostic Trouble Code (DTC). > |
| U0101 | Lost Communication With TCM | Defective CAN communication | < Ref. to DTC U0101: LOST COMMUNICATION WITH TCM , Diagnostic Procedure with Diagnostic Trouble Code (DTC). > |
| U0123 | Lost Communication with Yaw Rate Sensor Module | Defective CAN communication | < Ref. to DTC U0123: LOST COMMUNICATION WITH YAW RATE SENSOR MODULE , Diagnostic Procedure with Diagnostic Trouble Code (DTC). > |
| U0126 | Lost Communication With Steering Angle Sensor Module | Defective CAN communication | < Ref. to DTC U0126: LOST COMMUNICATION WITH STEERING ANGLE SENSOR MODULE , Diagnostic Procedure with Diagnostic Trouble Code (DTC). > |
| U0140 | Lost Communication With Body Control Module | Defective CAN communication | < Ref. to DTC U0140: LOST COMMUNICATION WITH BODY CONTROL MODULE , Diagnostic Procedure with Diagnostic Trouble Code (DTC). > |
| U0401 | Invalid Data Received From ECM/PCM "A" | Defective CAN communication | < Ref. to DTC U0401: INVALID DATA RECEIVED FROM ECM/PCM "A" , Diagnostic Procedure with Diagnostic Trouble Code (DTC). > |
| U0402 | Invalid Data Received From TCM | Defective CAN communication | < Ref. to DTC U0402: INVALID DATA RECEIVED FROM TCM , Diagnostic Procedure with Diagnostic Trouble Code (DTC). > |
| U0422 | Invalid Data Received From Body Control Module | Defective CAN communication | < Ref. to DTC U0422: INVALID DATA RECEIVED FROM BODY CONTROL MODULE , Diagnostic Procedure with Diagnostic Trouble Code (DTC). > |
| U0428 | Invalid Data Received From Steering Angle Sensor Module | Defective CAN communication | < Ref. to DTC U0428: INVALID DATA RECEIVED FROM STEERING ANGLE SENSOR MODULE , Diagnostic Procedure with Diagnostic Trouble Code (DTC). > |
| U0513 | Invalid Data Received from Yaw Rate Sensor Module | Defective CAN communication | < Ref. to DTC U0513: INVALID DATA RECEIVED FROM YAW RATE SENSOR MODULE , Diagnostic Procedure with Diagnostic Trouble Code (DTC). > |
| U1235 | Lost Communication With EyeSight | Defective CAN communication | < Ref. to DTC U1235: LOST COMMUNICATION WITH EYESIGHT , Diagnostic Procedure with Diagnostic Trouble Code (DTC). > |
| U1433 | Invalid Data Received From EyeSight | Defective CAN communication | < Ref. to DTC U1433: INVALID DATA RECEIVED FROM EYESIGHT , Diagnostic Procedure with Diagnostic Trouble Code (DTC). > |
MODELS WITHOUT EyeSight
| Step | Check | Yes | No |
|---|---|---|---|
| 1 INTERVIEW CUSTOMERS. Check if the vehicle ran the road with banks or sandy surface (which does not mean a dirt road). | Did the vehicle run the road with banks or sandy surface (which does not mean a dirt road)? | VDCCM & H/U may record DTC when the vehicle ran the road with banks or sandy surface (which does not mean a dirt road). | Go to step 2 . |
| 2 CHECK INSTALLATION OF VDCCM & H/U. | Is VDCCM & H/U installed properly without being tilted? Is the bracket deformation-free? Are the VDCCM & H/U installation bolts installed without missing or getting loose? | Go to step 3 . | Repair the defective part. Go to step 3 . Install VDCCM & H/U properly. Replace the bracket if faulty. Tighten the VDCCM & H/U installation bolt. < Ref. to VDC CONTROL MODULE & HYDRAULIC CONTROL UNIT (VDCCM & H/U) , COMPONENT, General Description. > |
| 3 CHECK OUTPUT OF YAW RATE & G SENSOR WITH SUBARU SELECT MONITOR. Drive the vehicle on a flat road. Park the vehicle straight. Select "Current Data Display & Save" on the Subaru Select Monitor. Read the «Yaw Rate Sensor» displayed on display. | Is the reading indicated on monitor display -4 - 4 deg/s? | Go to step 4 . | Replace the VDC Control Module only. < Ref. to REPLACEMENT , VDC Control Module and Hydraulic Control Unit (VDCCM & H/U). > |
| 4 CHECK OUTPUT OF STEERING ANGLE SENSOR WITH SUBARU SELECT MONITOR. Drive the vehicle on a flat road. Park the vehicle straight. Select "Current Data Display & Save" on the Subaru Select Monitor. Read the «Steering Angle Sensor» displayed on display. | Is the reading indicated on monitor display -10 - 10°? | Go to step 5 . | Perform the centering adjustment of steering wheel. |
| 5 CHECK VDCCM & H/U. Turn the ignition switch to OFF. Clear the memory. < Ref. to CLEAR MEMORY MODE . > Perform the Inspection Mode. < Ref. to INSPECTION MODE . > Read the DTC. | Is the same DTC displayed? | Replace the VDC Control Module only. < Ref. to REPLACEMENT , VDC Control Module and Hydraulic Control Unit (VDCCM & H/U). > | Go to step 6 . |
| 6 CHECK OTHER DTC DETECTION. | Is any other DTC displayed? | Perform the diagnosis according to DTC. < Ref. to LIST OF DIAGNOSTIC TROUBLE CODE (DTC) . > | It results from a temporary noise interference. |
DTC PROCEDURE
| Step | Check | Yes | No |
|---|---|---|---|
| 1 CHECK INSTALLATION OF VDCCM & H/U. | Is VDCCM & H/U installed properly without being tilted? Is the bracket deformation-free? Are the VDCCM & H/U installation bolts installed without missing or getting loose? | Go to step 2 . | Repair the defective part. Go to step 2 . Install VDCCM & H/U properly. Replace the bracket if faulty. Tighten the VDCCM & H/U installation bolt. < Ref. to VDC CONTROL MODULE & HYDRAULIC CONTROL UNIT (VDCCM & H/U) , COMPONENT, General Description. > |
| 2 CHECK OUTPUT OF STEERING ANGLE SENSOR USING SUBARU SELECT MONITOR. Park the vehicle straight on a level surface. Connect Subaru Select Monitor, and select "Current Data Display & Save". Read the «Steering Angle Sensor» displayed on display. | Is the indicated reading of the steering angle sensor on the monitor display -10° - 10°? | Go to step 3 . | Check the installation of steering angle sensor. |
| 3 CHECK OUTPUT OF LATERAL G SENSOR AND LONGITUDINAL G SENSOR WITH SUBARU SELECT MONITOR. Park the vehicle straight on a level surface. Connect Subaru Select Monitor, and select "Current Data Display & Save". Read the «Lateral G Sensor» «Longitudinal G Sensor» displayed on display. | Is the indicated reading of the lateral G sensor and longitudinal G sensor on the monitor display -2 - 2 m/s 2 ? | Go to step 4 . | Recheck from step 1, and if the problem is not solved, go to next. Go to step 7 . |
| 4 SET 0 POINT OF LATERAL G SENSOR AND LONGITUDINAL G SENSOR WITH SUBARU SELECT MONITOR. Select "Work Support" on Subaru Select Monitor. Perform the VDC sensor midpoint setting mode. < Ref. to VDC SENSOR MIDPOINT SETTING MODE , ADJUSTMENT, VDC Control Module and Hydraulic Control Unit (VDCCM & H/U). > | Is the 0 point setting successful? | Go to step 5 . | Recheck from step 1, and when the 0 point setting is not possible, replace the VDC Control Module only. < Ref. to REPLACEMENT , VDC Control Module and Hydraulic Control Unit (VDCCM & H/U). > |
| 5 PERFORM DRIVING TEST. Drive approximately 10 minutes, and check if the warning lights illuminate or improperly operate during driving. In a safe place, drive the vehicle while alternating acceleration and deceleration as much as possible. | Did the ABS warning light or VDC warning light remain off? Does ABS or VDC operate without malfunction? | Go to step 6 . | Recheck from step 1, and when the warning lights illuminate or improperly operate, replace the VDC Control Module only. < Ref. to REPLACEMENT , VDC Control Module and Hydraulic Control Unit (VDCCM & H/U). > |
| 6 CHECK OUTPUT OF LATERAL G SENSOR AND LONGITUDINAL G SENSOR WITH SUBARU SELECT MONITOR. Park the vehicle on a level surface. Connect Subaru Select Monitor, and select "Current Data Display & Save". Read the «Lateral G Sensor» «Longitudinal G Sensor» displayed on display. | Is the indicated reading of the lateral G sensor and longitudinal G sensor on the monitor display -1.5 - 1.5 m/s 2 ? | It results from a temporary noise interference. | Recheck from step 1, and if the problem is not solved, replace the VDC Control Module only. < Ref. to REPLACEMENT , VDC Control Module and Hydraulic Control Unit (VDCCM & H/U). > |
| 7 CHECK OUTPUT OF LATERAL G SENSOR AND LONGITUDINAL G SENSOR WITH SUBARU SELECT MONITOR. Remove the VDCCM & H/U installation bolt and bracket. Keep VDCCM & H/U in a horizontal position. Connect Subaru Select Monitor, and select "Current Data Display & Save". Read the «Lateral G Sensor» «Longitudinal G Sensor» displayed on display. | When the VDCCM & H/U is in a horizontal position, is the indicated reading of the lateral G sensor and longitudinal G sensor on the monitor display -1.5 - 1.5 m/s 2 ? | Check the bracket and brake pipe, and install VDCCM & H/U in a horizontal position to the vehicle. | Replace the VDC Control Module only. < Ref. to REPLACEMENT , VDC Control Module and Hydraulic Control Unit (VDCCM & H/U). > |
DTC PROCEDURE
MODELS WITH EyeSight
| Step | Check | Yes | No |
|---|---|---|---|
| 1 CHECK YAW RATE & G SENSOR INSTALLATION. | Is the yaw rate & G sensor installation bolt tightened to 7.5 N.m (0.76 kgf-m, 5.5 ft-lb)? | Go to step 2 . | Tighten the yaw rate & G sensor attachment bolt. |
| 2 CHECK OUTPUT OF LATERAL G SENSOR WITH SUBARU SELECT MONITOR. Park the vehicle on a level surface. Select "Current Data Display & Save" on the Subaru Select Monitor. < Ref. to READ CURRENT DATA , OPERATION, Subaru Select Monitor. > Read the «Lateral G Sensor» displayed on display. | Is the indicated reading on the monitor display -1.5 - 1.5 m/s 2 ? | Go to step 3 . | Replace the yaw rate & G sensor. < Ref. to YAW RATE AND G SENSOR . > |
| 3 CHECK OUTPUT OF LATERAL G SENSOR WITH SUBARU SELECT MONITOR. Turn the ignition switch to OFF. Remove the yaw rate & G sensor from vehicle. Turn the ignition switch to ON, and select the "Current Data Display & Save" in Subaru Select Monitor. < Ref. to READ CURRENT DATA , OPERATION, Subaru Select Monitor. > Read the «Lateral G Sensor» displayed on display. | When the yaw rate & G sensor is inclined 90° to the right, is the indicated value 6.8 - 12.8 m/s 2 ? | Go to step 4 . | Replace the yaw rate & G sensor. < Ref. to YAW RATE AND G SENSOR . > |
| 4 CHECK LATERAL G SENSOR WITH SUBARU SELECT MONITOR. Read the «Lateral G Sensor» displayed on display. | When the yaw rate & G sensor is inclined 90° to the left, is the indicated value -6.8 - -12.8 m/s 2 ? | Go to step 5 . | Replace the yaw rate & G sensor. < Ref. to YAW RATE AND G SENSOR . > |
| 5 CHECK POOR CONTACT OF CONNECTORS. Turn the ignition switch to OFF. | Is there poor contact of connector between VDCCM & H/U and yaw rate & G sensor? | Repair the connector. | Go to step 6 . |
| 6 CHECK VDCCM & H/U. Connect all connectors. Clear the memory. < Ref. to CLEAR MEMORY MODE . > Perform the Inspection Mode. < Ref. to INSPECTION MODE . > Read the DTC. | Is the same DTC displayed? | Replace the VDC Control Module only. < Ref. to REPLACEMENT , VDC Control Module and Hydraulic Control Unit (VDCCM & H/U). > | Go to step 7 . |
| 7 CHECK OTHER DTC DETECTION. | Is any other DTC displayed? | Perform the diagnosis according to DTC. < Ref. to LIST OF DIAGNOSTIC TROUBLE CODE (DTC) . > | Temporary poor contact occurs. |
Note. For the diagnostic procedure, refer to "DTC C1732 LATERAL G SENSOR ABNORMAL". < Ref. to DTC C1732 LATERAL G SENSOR ABNORMAL , Diagnostic Procedure with Diagnostic Trouble Code (DTC). >
| Step | Check | Yes | No |
|---|---|---|---|
| 1 WHETHER A WHEEL TURNED FREELY OR NOT. Check if the wheels have been turned freely for one minute or more, such as when the vehicle is jacked-up, under full-lock cornering or when the wheels are not in contact with road surface. | Did the wheels turn freely? | VDC is normal. Clear the memory. < Ref. to CLEAR MEMORY MODE . > | Go to step 2 . |
| 2 CHECK OUTPUT OF LONGITUDINAL G SENSOR USING SUBARU SELECT MONITOR. Park the vehicle on a level surface. Select "Current Data Display & Save" on the Subaru Select Monitor. < Ref. to READ CURRENT DATA , OPERATION, Subaru Select Monitor. > Read the «Longitudinal G Sensor» displayed on display. | Is the indicated reading on the monitor display -1.2 - 1.2 m/s 2 ? | Go to step 3 . | Replace the yaw rate & G sensor. < Ref. to YAW RATE AND G SENSOR . > |
| 3 CHECK OUTPUT OF LONGITUDINAL G SENSOR USING SUBARU SELECT MONITOR. Turn the ignition switch to OFF. Remove the yaw rate & G sensor from vehicle. < Ref. to YAW RATE AND G SENSOR . > Turn the ignition switch to ON, and select the "Current Data Display & Save" in Subaru Select Monitor. < Ref. to READ CURRENT DATA , OPERATION, Subaru Select Monitor. > Read the «Longitudinal G Sensor» displayed on display. | When the yaw rate & G sensor is inclined 90° to the front, is the indicated value 6.8 - 12.8 m/s 2 ? | Go to step 4 . | Replace the yaw rate & G sensor. < Ref. to YAW RATE AND G SENSOR . > |
| 4 CHECK OUTPUT OF LONGITUDINAL G SENSOR USING SUBARU SELECT MONITOR. Read the «Longitudinal G Sensor» displayed on display. | When the yaw rate & G sensor is inclined 90° to the rear, is the indicated value -6.8 - -12.8 m/s 2 ? | Go to step 5 . | Replace the yaw rate & G sensor. < Ref. to YAW RATE AND G SENSOR . > |
| 5 CHECK POOR CONTACT OF CONNECTOR. Turn the ignition switch to OFF. | Is there poor contact of connector between VDCCM & H/U and yaw rate & G sensor? | Repair the connector. | Go to step 6 . |
| 6 CHECK VDCCM & H/U. Connect all connectors. Clear the memory. < Ref. to CLEAR MEMORY MODE . > Perform the Inspection Mode. < Ref. to INSPECTION MODE . > Read the DTC. | Is the same DTC displayed? | Replace the VDC Control Module only. < Ref. to REPLACEMENT , VDC Control Module and Hydraulic Control Unit (VDCCM & H/U). > | Go to step 7 . |
| 7 CHECK OTHER DTC DETECTION. | Is any other DTC displayed? | Perform the diagnosis according to DTC. < Ref. to LIST OF DIAGNOSTIC TROUBLE CODE (DTC) . > | Temporary poor contact occurs. |
DTC PROCEDURE