WIRING DIAGRAM
Vehicle Dynamics Control System < Refer to l System Wiring Diagram. >
Scheme 28
| Step | Check | Yes | No |
|---|---|---|---|
| 1 CHECK IGNITION SWITCH. | Is the ignition switch ON? | Go to step 2 . | Turn the ignition switch to ON, and select VDC mode using Subaru Select Monitor. |
| 2 CHECK BATTERY. Turn the ignition switch to OFF. Measure the battery voltage. | Is the voltage 11 V or more? | Go to step 3 . | Charge or replace the battery. |
| 3 CHECK BATTERY TERMINAL. | Is there poor contact at battery terminal? | Repair or tighten the battery terminal. | Go to step 5 . |
| 4 CHECK INSTALLATION OF VDCCM&H/U CONNECTOR. Turn the ignition switch to OFF. | Is the VDCCM&H/U connector inserted into VDCCM&H/U until the clamp locks onto it? | Go to step 5 . | Insert VDCCM&H/U connector into VDCCM&H/U. |
| 5 CHECK LAN SYSTEM. Perform the diagnosis for LAN system. < Refer to BASIC DIAGNOSTIC PROCEDURE . > | Is there any fault in LAN system? | Perform the diagnosis according to DTC for LAN system. < Refer to LIST OF DIAGNOSTIC TROUBLE CODE (DTC) . > | Go to step 6 . |
| 6 CHECK SUBARU SELECT MONITOR COMMUNICATION. Turn the ignition switch to ON. Check whether communication to VDC system can be executed normally. | Is the system name displayed on Subaru Select Monitor? | Check the DTC in VDC system. < Refer to READ DIAGNOSTIC TROUBLE CODE (DTC) . > | Go to step 7 . |
| 7 CHECK POWER SUPPLY CIRCUIT. Turn the ignition switch to ON. (engine OFF) Measure the ignition power supply voltage between VDCCM&H/U connector and chassis ground. Connector & terminal (B310) No. 4 (+) - Chassis ground (-): (B310) No. 1 (+) - Chassis ground (-): (B310) No. 26 (+) - Chassis ground (-) | Is the voltage 10 - 15 V? | Go to step 8 . | Repair open circuit in harness between VDCCM&H/U and battery. |
| 8 CHECK HARNESS CONNECTOR BETWEEN VDCCM&H/U AND CHASSIS GROUND. Turn the ignition switch to OFF. Disconnect the connector from the VDCCM&H/U. Measure the resistance of harness between VDCCM&H/U connector and chassis ground. Connector & terminal (B310) No. 14 - Chassis ground | Is the resistance less than 10 ohms? | Go to step 9 . | Repair the open circuit of VDCCM&H/U ground circuit and poor contact of connector. |
| 9 CHECK POOR CONTACT OF CONNECTOR. | Is there poor contact of control module power supply, ground circuit and data link connector? | Repair the connector. | Replace the VDCCM&H/U. < Refer to VDC CONTROL MODULE AND HYDRAULIC CONTROL UNIT (VDCCM&H/U) . > |
Vehicle Dynamics Control System < Refer to System Wiring Diagram. >
Scheme 29
| Step | Check | Yes | No |
|---|---|---|---|
| 1 READ DTC. Read the DTC. < Refer to READ DIAGNOSTIC TROUBLE CODE (DTC) . > | Is DTC displayed? | Perform the diagnosis according to DTC. < Refer to LIST OF DIAGNOSTIC TROUBLE CODE (DTC) . > | Go to step 2 . |
| 2 CHECK VDC OFF SWITCH. Remove and check VDC OFF switch. < Refer to VDC OFF SWITCH . > | Is the VDC OFF switch normal? | Go to step 3 . | Replace the VDC OFF switch. |
| 3 CHECK VDC OFF SWITCH CIRCUIT. Disconnect the connector from the VDCCM&H/U. Measure the resistance between VDCCM&H/U connector and chassis ground. Connector & terminal (B310) No. 37 - Chassis ground | Is the resistance less than 10 ohms? | Check the VDC OFF switch circuit. | Go to step 4 . |
| 4 CHECK LAN SYSTEM. Perform the diagnosis for LAN system. < Refer to BASIC DIAGNOSTIC PROCEDURE . > | Is there any fault in LAN system? | Perform the diagnosis according to DTC for LAN system. < Refer to LIST OF DIAGNOSTIC TROUBLE CODE (DTC) . > | Go to step 5 . |
| 5 CHECK COMBINATION METER. Check the combination meter. < Refer to SELF-DIAGNOSIS DISPLAY MODE , OPERATION, Combination Meter System. > | Is combination meter OK? | Replace the VDCCM only. < Refer to REPLACEMENT , VDC Control Module and Hydraulic Control Unit (VDCCM&H/U). > | Replace the combination meter. < Refer to COMBINATION METER . > |
Parking brake / brake fluid level warning light system < Refer to System Wiring Diagram>
Scheme 30
| Step | Check | Yes | No |
|---|---|---|---|
| 1 CHECK INSTALLATION OF VDCCM&H/U CONNECTOR. Turn the ignition switch to OFF. Check that the VDCCM&H/U connector is inserted until it is locked by clamp. | Is the connector firmly inserted? | Go to step 2 . | Insert the VDCCM&H/U connector until it is locked by clamp. |
| 2 READ DTC. Read the DTC. < Refer to READ DIAGNOSTIC TROUBLE CODE (DTC) . > | Is DTC displayed? | Perform the diagnosis according to DTC. < Refer to LIST OF DIAGNOSTIC TROUBLE CODE (DTC) . > | Go to step 3 . |
| 3 CHECK BRAKE FLUID AMOUNT. Check the amount of brake fluid in the reservoir tank of master cylinder. | Does the level of the brake fluid amount fall between the lines of "MAX" and "MIN"? | Go to step 4 . | Replenish brake fluid to the specified value. |
| 4 CHECK BRAKE FLUID LEVEL SWITCH. Turn the ignition switch to OFF. Disconnect the level switch connector (B16) from master cylinder. Measure the resistance of master cylinder terminals. Terminals No. 1 - No. 2 | Is the resistance 1 Mohms or more? | Go to step 5 . | Replace the master cylinder. < Refer to MASTER CYLINDER . > |
| 5 CHECK GROUND SHORT OF HARNESS. Disconnect the connector (i10) from combination meter. Measure the resistance between combination meter connector and chassis ground. Connector & terminal (i10) No. 23 - Chassis ground | Is the resistance 1 Mohms or more? | Go to step 6 . | Repair the harness between combination meter and brake fluid level switch. |
| 6 CHECK PARKING BRAKE SWITCH. Disconnect the connector (R4) from parking brake switch. Release the parking brake. Measure the resistance between parking brake switch terminal and chassis ground. | Is the resistance 1 Mohms or more? | Go to step 7 . | Replace the parking brake switch. |
| 7 CHECK GROUND SHORT OF HARNESS. Disconnect the connector (i84) from body integrated unit. Measure the resistance between body integrated unit connector and chassis ground. Connector & terminal (i84) No. 32 - Chassis ground | Is the resistance 1 Mohms or more? | Go to step 8 . | Repair the harness between body integrated unit and parking brake switch. |
| 8 CHECK POOR CONTACT OF CONNECTOR. Check for poor contact of all connectors. | Is there poor contact? | Repair the connector. | Go to step 9 . |
| 9 CHECK LAN SYSTEM. Perform the diagnosis for LAN system. < Refer to BASIC DIAGNOSTIC PROCEDURE . > | Is there any fault in LAN system? | Perform the diagnosis according to DTC for LAN system. < Refer to LIST OF DIAGNOSTIC TROUBLE CODE (DTC) . > | Go to step 10 . |
| 10 CHECK COMBINATION METER. Check the combination meter. < Refer to SELF-DIAGNOSIS DISPLAY MODE , OPERATION, Combination Meter System. > | Is combination meter OK? | Replace the VDCCM only. < Refer to REPLACEMENT , VDC Control Module and Hydraulic Control Unit (VDCCM&H/U). > | Replace the combination meter. < Refer to COMBINATION METER . > |
Vehicle Dynamics Control System < Refer to System Wiring Diagram. >
Scheme 31
Vehicle Dynamics Control System < Refer to System Wiring Diagram. >
Scheme 32
Vehicle Dynamics Control System < Refer to System Wiring Diagram. >
Scheme 33
Vehicle Dynamics Control System < Refer to l System Diagram. >
Vehicle Dynamics Control System < Refer to .System Wiring Diagram. >
Scheme 34
Vehicle Dynamics Control System < Refer to System Wiring Diagram>
Stop light system < Refer to Wiring Diagram. >
Scheme 35
Stop light system < Refer to Wiring Diagram. >
Engine electrical system < Refer to Wiring Diagram. >
CAN communication system < Refer to CAN Communication System Wiring Diagram. >
Scheme 36
Back-up light system < Refer to Back-up Light System Wiring Diagram. >
CAN communication system < Refer to CAN Communication System Wiring Diagram. >
Scheme 37
Vehicle Dynamics Control System < Refer to Vehicle Dynamics Control System Wiring Diagram. >
