WIRING DIAGRAM
< Ref. to WIRING DIAGRAM , CAN Communication System. >
CAN communication system < Ref. to WIRING DIAGRAM , CAN Communication System. >
Scheme 18
| Step | Check | Yes | No |
|---|---|---|---|
| 1 CHECK SUBARU SELECT MONITOR . Connect the Subaru Select Monitor to another vehicle. Check communication condition between Subaru Select Monitor and vehicle. | Is communication performed normally? | Go to step 2 . | Subaru Select Monitor unit or diagnosis cable is faulty. Or check the fuse on the vehicle side. |
| 2 CHECK COMMUNICATION FOR INITIALIZING ERROR . Perform the communication for initializing with each module by connecting the Subaru Select Monitor. (only for installed modules) | Is the communication possible with all modules? | Go to step 3 . | Perform the inspection using the check sheet of communication for initializing. < Ref. to CHECK USING THE CHECK SHEET OF COMMUNICATION FOR INITIALIZING , COMMUNICATION FOR INITIALIZING IMPOSSIBLE, Subaru Select Monitor. > |
| 3 CHECK DATA LINK CONNECTOR . Use a tester to check for continuity in the ground circuit. Connector & terminal (B40) No. 4 - Chassis ground: (B40) No. 5 - Chassis ground | Is there continuity? | Go to step 4 . | Repair or replace the open circuit. |
| 4 CHECK DATA LINK CONNECTOR . Turn the ignition switch to ON. Using a tester, check the power supply of data link connector. Connector & terminal (B40) No. 8 (+) - Chassis ground (-): (B40) No. 16 (+) - Chassis ground (-) | Is the voltage 10 V or more? | Check the power supply circuit of each module. | Check the power supply circuits to the data link connector. |
CAN communication system < Ref. to WIRING DIAGRAM , CAN Communication System. >
Scheme 19
Scheme 20
- Non-turbo model
- Turbo model
| Step | Check | Yes | No |
|---|---|---|---|
| 1 CHECK BASIC DIAGNOSTIC PROCEDURE . Check if the basic diagnostic procedure was performed up to STEP 3. NOTE: The above-mentioned step can easily narrow down a fault part by the inspection with SSM, before performing "Inspection of CAN communication circuit" using a circuit tester. | Was the basic diagnostic procedure performed? | Go to step 2 . | Perform the basic diagnostic procedure. < Ref. to PROCEDURE , Basic Diagnostic Procedure. > |
| 2 CHECK FROM DATA LINK CONNECTOR . Using the tester, measure the resistance between terminals. Connector & terminal (B40) No. 6 - Chassis ground: (B40) No. 14 - Chassis ground | Is the resistance 10 ohms or less? | Check for ground short. < Ref. to GROUND SHORT INSPECTION , INSPECTION, CAN Communication Circuit Check. > | Go to step 3 . |
| 3 CHECK FROM DATA LINK CONNECTOR . Turn the ignition switch to ON. Using the tester, measure the voltage between terminals. Connector & terminal (B40) No. 6 - Chassis ground: (B40) No. 14 - Chassis ground | Is the voltage 5 V or less? | Go to step 4 . | Check for battery short. < Ref. to BATTERY SHORT INSPECTION , INSPECTION, CAN Communication Circuit Check. > |
| 4 CHECK FROM DATA LINK CONNECTOR . Turn the ignition switch to OFF. Using the tester, measure the resistance between terminals. Connector & terminal (B40) No. 6 - No. 14 | Is the resistance 52 ohms or less? | Perform the inspection for the resistance of 52 ohms or less. < Ref. to 52 ohms OR LESS , INSPECTION, CAN Communication Circuit Check. > | Go to step 5 . |
| 5 CHECK FROM DATA LINK CONNECTOR . Using the tester, measure the resistance between terminals. Connector & terminal (B40) No. 6 - No. 14 | Is the resistance 62 ohms or more? | Perform the inspection for the resistance of 62 ohms or more. < Ref. to 62 ohms OR MORE , INSPECTION, CAN Communication Circuit Check. > | If the display of CAN system U-code disappears from the current malfunction, the CAN network is currently normal. If the U-code has detected as current malfunction, related lines may be open. Perform the inspection for the related line corresponding to the detected DTC. < Ref. to LIST , CAN Communication Circuit Check. > |
| NOTE |
|---|
| The above-mentioned step can easily narrow down a fault part by the inspection with SSM, before performing "Inspection of CAN communication circuit" using a circuit tester. |
CAN communication system < Ref. to WIRING DIAGRAM , CAN Communication System. >
- Non-turbo model
- Turbo model
Note. Main wiring harness or related lines may be shorted to ground, or shorted to ground in one of the control modules.
| Step | Check | Yes | No |
|---|---|---|---|
| 1 CHECK BETWEEN RELATED LINES AND MAIN WIRING HARNESS . Using the tester, measure the resistance between terminals. Connector & terminal (B40) No. 6 - Chassis ground: (B40) No. 14 - Chassis ground | Is the resistance 10 ohms or less? | Go to step 2 . | Currently, it is normal. |
| 2 CHECK CONTROL MODULE . With the tester connected, disconnect control module. NOTE: Disconnect the body integrated unit at the end. Connector & terminal (B40) No. 6 - Chassis ground: (B40) No. 14 - Chassis ground | Did the resistance change to 10 ohms or more? | Replace the control module whose resistance has changed. When the value changed at disconnecting the body integrated unit, Go to step 3 . | Repair or replace the short circuit of the main wiring harness and related lines between body integrated unit and ECM. |
| 3 CHECK BETWEEN MAIN WIRING HARNESSES . Using the tester, measure the resistance between terminals. Connector & terminal (B281) No. 20 - Chassis ground: (B281) No. 28 - Chassis ground | Is the resistance 10 ohms or less? | Repair or replace the short circuit of the main wiring harness and related lines between VDC Control Module and body integrated unit. Replace the body integrated unit. | < Ref. to REMOVAL , Body Integrated Unit. > |
| NOTE |
|---|
| Disconnect the body integrated unit at the end. |
CAN communication system < Ref. to WIRING DIAGRAM , CAN Communication System. >
- Non-turbo model
- Turbo model
Note. Main wiring harness or related lines may be shorted to battery circuit, or shorted to battery circuit in one of the control modules.
| Step | Check | Yes | No |
|---|---|---|---|
| 1 CHECK BETWEEN RELATED LINES AND MAIN WIRING HARNESS . Turn the ignition switch to ON. Using the tester, measure the voltage between terminals. Connector & terminal (B40) No. 6 - Chassis ground: (B40) No. 14 - Chassis ground | Is the voltage 5 V or less? | Currently, it is normal. | Go to step 2 . |
| 2 CHECK CONTROL MODULE . With the tester connected, disconnect control module. NOTE: Disconnect the body integrated unit at the end. Connector & terminal (B40) No. 6 - Chassis ground: (B40) No. 14 - Chassis ground | Did the voltage change to 5 V or less? | Replace the control module whose voltage has changed. When the value changed at disconnecting the body integrated unit, Go to step 3 . | Repair or replace the short circuit of the harness between body integrated unit and ECM. |
| 3 CHECK BETWEEN MAIN WIRING HARNESSES . Using the tester, measure the voltage between terminals. Connector & terminal (B281) No. 20 - Chassis ground: (B281) No. 28 - Chassis ground | Is the voltage 5 V or less? | Replace the body integrated unit. < Ref. to REMOVAL , Body Integrated Unit. > | Repair or replace the short circuit of the harness between VDC Control Module and body integrated unit. |
| NOTE |
|---|
| Disconnect the body integrated unit at the end. |
CAN communication system < Ref. to WIRING DIAGRAM , CAN Communication System. >
- Non-turbo model
- Turbo model
Note. When the measured resistance value is 53 - 61 ohms, main wiring harness or related lines may be shorted to ground, or shorted to power supply line, or related line may be open.
| Step | Check | Yes | No |
|---|---|---|---|
| 1 CHECK BETWEEN RELATED LINES AND MAIN WIRING HARNESS . Using the tester, measure the resistance between terminals. Connector & terminal (B40) No. 6 - Chassis ground: (B40) No. 14 - Chassis ground | Is the resistance 10 ohms or less? | Go to step 2 . | Go to step 4 . |
| 2 CHECK CONTROL MODULE . With the tester connected, disconnect control module. NOTE: Disconnect the body integrated unit at the end. Connector & terminal (B40) No. 6 - Chassis ground: (B40) No. 14 - Chassis ground | Did the resistance change to 10 ohms or more? | Replace the control module whose resistance has changed. When the value changed at disconnecting the body integrated unit, Go to step 3 . | Repair or replace the short circuit of the harness between body integrated unit and ECM. |
| 3 CHECK MAIN WIRING HARNESS AND RELATED LINES . Using the tester, measure the resistance between terminals. Connector & terminal (B281) No. 20 - Chassis ground: (B281) No. 28 - Chassis ground | Is the resistance 10 ohms or less? | Repair or replace the short circuit of the harness between VDC Control Module and body integrated unit. | Replace the body integrated unit. < Ref. to REMOVAL , Body Integrated Unit. > |
| 4 CHECK BETWEEN RELATED LINES AND MAIN WIRING HARNESS . Turn the ignition switch to ON. Using the tester, measure the voltage between terminals. Connector & terminal (B40) No. 6 - Chassis ground: (B40) No. 14 - Chassis ground | Is the voltage 5 V or less? | CAN communication circuit is normal. | Go to step 5 . |
| 5 CHECK CONTROL MODULE . With the tester connected, disconnect control module. NOTE: Disconnect the body integrated unit at the end. Connector & terminal (B40) No. 6 - Chassis ground: (B40) No. 14 - Chassis ground | Did the voltage change to 5 V or less? | Replace the control module whose voltage has changed. When the value changed at disconnecting the body integrated unit, Go to step 6 . | Repair or replace the short circuit of the harness between body integrated unit and ECM. |
| 6 CHECK HARNESS . Using a tester, measure the voltage between terminals and chassis ground. Connector & terminal (B281) No. 20 - Chassis ground: (B281) No. 28 - Chassis ground | Is the voltage 5 V or less? | Replace the body integrated unit. < Ref. to REMOVAL , Body Integrated Unit. > | Repair or replace the short circuit of the harness between VDC Control Module and body integrated unit. |
| NOTE |
|---|
| Disconnect the body integrated unit at the end. |
| NOTE |
|---|
| Disconnect the body integrated unit at the end. |
CAN communication system < Ref. to WIRING DIAGRAM , CAN Communication System. >
- Non-turbo model
- Turbo model
Note. When the bus line is measured, combined resistance of end resistance (120 ohms) in ECM and end resistance (120 ohms) in VDC Control Module can be measured. The combined resistance is approximately 53 - 61 ohms with the stabilizing circuit included. When the measured resistance value is 52 ohms or less, main wiring harness or related lines may be shorted, or combined resistance may have changed because resistance other than end resistance is created on the circuit.
| Step | Check | Yes | No |
|---|---|---|---|
| 1 CHECK BETWEEN RELATED LINES AND MAIN WIRING HARNESS . Using the tester, measure the resistance between terminals. Connector & terminal (B40) No. 6 - No. 14 | Is the resistance 10 ohms or less? | Go to step 2 . | Go to step 4 . |
| 2 CHECK MAIN WIRING HARNESS AND RELATED LINES . With a tester connected, disconnect control module connectors in order. NOTE: Disconnect the body integrated unit at the end. Connector & terminal (B40) No. 6 - No. 14 | Is there any control module whose condition has changed from short state? | Replace the control module whose resistance has changed. When the value changed at disconnecting the body integrated unit, Go to step 3 . | Repair or replace the short circuit of the harness between body integrated unit and ECM. |
| 3 CHECK BETWEEN MAIN WIRING HARNESSES . Using the tester, measure the resistance between terminals. Connector & terminal (B281) No. 20 - No. 28 | Is the resistance 10 ohms or less? | Repair or replace the short circuit of the harness between VDC Control Module and body integrated unit. | Replace the body integrated unit. < Ref. to REMOVAL , Body Integrated Unit. > |
| 4 CHECK CONTROL MODULE . Disconnect ECM and VDC Control Module connectors. Using a tester, measure the resistance between control module terminals. Connector & terminal (B137) No. 19 - No. 18 (non-turbo model): (B134) No. 9 - No. 10 (turbo model): (B310) No. 2 - No. 15 | Is the resistance 114 - 126 ohms? | Go to step 5 . | Replace the control module whose end resistance value is out of the specified range. |
| 5 CHECK CONTROL MODULE . Disconnect the connector of body integrated unit. Using a tester, measure the resistance between control module terminals. Connector & terminal (B281) No. 28 - (i84) No. 27: (B281) No. 20 - (i84) No. 35 | Is the resistance 2, 850 - 3, 150 ohms? | Go to step 6 . | Replace the body integrated unit. < Ref. to REMOVAL , Body Integrated Unit. > |
| 6 CHECK CONTROL MODULE . Using a tester, measure the resistance between control module terminals. Connector & terminal (B281) No. 28 - (i84) No. 35: (B281) No. 20 - (i84) No. 27 | Is the resistance less than 1 ohms? | Go to step 7 . | Replace the body integrated unit. < Ref. to REMOVAL , Body Integrated Unit. > |
| 7 CHECK CONTROL MODULE . Disconnect the combination meter connector. Using a tester, measure the resistance between control module terminals. Connector & terminal (i10) No. 32 - No. 33 | Is the resistance 2, 850 - 3, 150 ohms? | Go to step 8 . | Replace the combination meter. < Ref. to REMOVAL , Combination Meter. > |
| 8 CHECK CONTROL MODULE (ONLY FOR MODELS WITH HIGH GRADE MFD) . Disconnect the MFD connector. Using a tester, measure the resistance between control module terminals. Connector & terminal (i122) No. 5 - No. 6 | Is the resistance 2, 850 - 3, 150 ohms? | Go to step 9 . | Replace the MFD. < Ref. to REMOVAL , Multi-function Display (MFD). > |
| 9 CHECK HARNESS . Using the tester, check the short circuit portion of each harness. Connector & terminal (B281) No. 28 - No. 20 | Is the resistance 1 Mohms or more? | Go to step 11 . | Go to step 10 . |
| 10 CHECK CONTROL MODULE . With a tester connected, disconnect control modules in order. Connector & terminal (B281) No. 28 - No. 20 | Are there any control modules whose resistance changed to 1 Mohms or more? | Replace the control module that has changed. | Repair or replace the harness part which has resistance component. |
| 11 CHECK CONTROL MODULE . With a tester connected, disconnect control modules in order. Connector & terminal (i84) No. 27 - No. 35 | Are there any control modules whose resistance changed to 1 Mohms or more? | Replace the control module that has changed. | Repair or replace the harness part which has resistance component. |
| NOTE |
|---|
| Disconnect the body integrated unit at the end. |
CAN communication system < Ref. to WIRING DIAGRAM , CAN Communication System. >
- Non-turbo model
- Turbo model
Note. When CAN communication circuit is measured, combined resistance of end resistance (120 ohms) in ECM and end resistance (120 ohms) in VDC Control Module can be measured. The combined resistance is approximately 53 - 61 ohms with the stabilizing circuit included. When the measured resistance value is 62 ohms or more, either one of the end resistances, or stabilizing circuit, or main wiring harness may have malfunction such as open circuit.
| Step | Check | Yes | No |
|---|---|---|---|
| 1 CHECK CONTROL MODULE . Disconnect ECM and VDC Control Module connectors. Using a tester, measure the resistance between control module terminals. Connector & terminal (B137) No. 19 - No. 18 (non-turbo model): (B134) No. 9 - No. 10 (turbo model): (B310) No. 2 - No. 15 | Is the resistance 114 - 126 ohms? | Go to step 2 . | Replace the control module whose value is out of the specification. |
| 2 CHECK CONTROL MODULE . Disconnect the connector of body control module. Using a tester, measure the resistance between control module terminals. Connector & terminal (B281) No. 28 - (i84) No. 27: (B281) No. 20 - (i84) No. 35 | Is the resistance 2, 850 - 3, 150 ohms? | Go to step 3 . | Replace the body integrated unit. < Ref. to REMOVAL , Body Integrated Unit. > |
| 3 CHECK CONTROL MODULE . Using the tester, measure the resistance between terminals. Connector & terminal (B281) No. 28 - (i84) No. 35: (B281) No. 20 - (i84) No. 27 | Is the resistance less than 1 ohms? | Go to step 4 . | Replace the body integrated unit. < Ref. to REMOVAL , Body Integrated Unit. > |
| 4 CHECK CONTROL MODULE . Disconnect the combination meter connector. Using a tester, measure the resistance between control module terminals. Connector & terminal (i10) No. 32 - No. 33 | Is the resistance 2, 850 - 3, 150 ohms? | Go to step 5 . | Replace the combination meter. < Ref. to REMOVAL , Combination Meter. > |
| 5 CHECK CONTROL MODULE (ONLY FOR MODELS WITH HIGH GRADE MFD) . Disconnect the MFD connector. Using a tester, measure the resistance between control module terminals. Connector & terminal (i122) No. 5 - No. 6 | Is the resistance 2, 850 - 3, 150 ohms? | Go to step 6 . | Replace the MFD. < Ref. to REMOVAL , Multi-function Display (MFD). > |
| 6 CHECK HARNESS . Using a tester, check continuity between terminals. Connector & terminal (B40) No. 6 - (B137) No. 19 (non-turbo model): (B40) No. 14 - (B137) No. 18 (non-turbo model): (B40) No. 6 - (B134) No. 10 (turbo model): (B40) No. 14 - (B134) No. 9 (turbo model): (B40) No. 6 - (i84) No. 27: (B40) No. 14 - (i84) No. 35 | Is there continuity? | Go to step 7 . | Repair or replace the open circuit of harness. |
| 7 CHECK HARNESS . Using a tester, check continuity between terminals. Connector & terminal (B281) No. 20 - (B310) No. 2: (B281) No. 28 - (B310) No. 15 | Is there continuity? | It is possible that temporary poor communication occurs. | Repair or replace the open circuit of harness. |
CAN communication system < Ref. to WIRING DIAGRAM , CAN Communication System. >
- Non-turbo model
- Turbo model
Note. Perform inspection when no data is received, or faulty is detected. This is different from power supply shorted or ground shorted.
| Step | Check | Yes | No |
|---|---|---|---|
| 1 CHECK BETWEEN RELATED LINES AND MAIN WIRING HARNESS . Disconnect the TCM connector. Using the tester, measure the resistance between terminals. Connector & terminal (B55) No. 17 - No. 18 | Is the resistance 400 ohms or more? | Related lines between TCM and main wiring harness is open, or main wiring harness is open at two places or more. | Go to step 2 . |
| 2 CHECK RELATED LINES . Using the tester, measure the resistance between terminals. Connector & terminal (B55) No. 17 - (B40) No. 14: (B55) No. 18 - (B40) No. 6 | Is the resistance 10 ohms or more? | Repair or replace the open circuit portion of TCM related lines. | Check DTC of TCM. < Ref. to OPERATION , Read Diagnostic Trouble Code (DTC). > |
CAN communication system < Ref. to WIRING DIAGRAM , CAN Communication System. >
- Non-turbo model
- Turbo model
| Step | Check | Yes | No |
|---|---|---|---|
| 1 CHECK BETWEEN RELATED LINES AND MAIN WIRING HARNESS . Disconnect the steering angle sensor connector. Using the tester, measure the resistance between terminals. Connector & terminal (B231) No. 2 - No. 3 | Is the resistance 400 ohms or more? | Related lines between steering angle sensor and main wiring harness is open, or main wiring harness is open at two places or more. | Go to step 2 . |
| 2 CHECK RELATED LINES . Using the tester, measure the resistance between terminals. Connector & terminal (B231) No. 2 - (B40) No. 14: (B231) No. 3 - (B40) No. 6 | Is the resistance 10 ohms or more? | Repair or replace the open circuit portion of steering angle sensor related lines. | Check DTC of VDC Control Module. < Ref. to OPERATION , Read Diagnostic Trouble Code (DTC). > |
CAN communication system < Ref. to WIRING DIAGRAM , CAN Communication System. >
- Non-turbo model
- Turbo model
| Step | Check | Yes | No |
|---|---|---|---|
| 1 CHECK BETWEEN RELATED LINES AND MAIN WIRING HARNESS . Disconnect the A/C control panel connector. Using the tester, measure the resistance between terminals. Connector & terminal (i88) No. 19 - No. 20 | Is the resistance 400 ohms or more? | Related lines between A/C control panel and main wiring harness is open, or main wiring harness is open at two places or more. | Go to step 2 . |
| 2 CHECK RELATED LINES . Using the tester, measure the resistance between terminals. Connector & terminal (i88) No. 19 - (B40) No. 14: (i88) No. 20 - (B40) No. 6 | Is the resistance 10 ohms or more? | Repair or replace the open circuit of A/C control panel related lines. | Check the DTC of A/C control panel. < Ref. to READ DIAGNOSTIC TROUBLE CODE (DTC) . > |
CAN communication system < Ref. to WIRING DIAGRAM , CAN Communication System. >
- Non-turbo model
- Turbo model
| Step | Check | Yes | No |
|---|---|---|---|
| 1 CHECK BETWEEN RELATED LINES AND MAIN WIRING HARNESS . Disconnect the Electric Power Steering Control Module connector. Using the tester, measure the resistance between terminals. Connector & terminal (B450) No. 6 - No. 7 | Is the resistance 400 ohms or more? | Related lines between Electric Power Steering Control Module and main wiring harness, or main wiring harness is open at two places or more. | Go to step 2 . |
| 2 CHECK RELATED LINES . Using the tester, measure the resistance between terminals. Connector & terminal (B450) No. 6 - (B40) No. 6: (B450) No. 7 - (B40) No. 14 | Is the resistance 10 ohms or more? | Repair or replace the open circuit portion of Electric Power Steering Control Module related lines. | Check DTC of Electric Power Steering Control Module. < Ref. to OPERATION , Read Diagnostic Trouble Code (DTC). > |
CAN communication system < Ref. to WIRING DIAGRAM , CAN Communication System. >
- Non-turbo model
- Turbo model
| Step | Check | Yes | No |
|---|---|---|---|
| 1 CHECK BETWEEN RELATED LINES AND MAIN WIRING HARNESS . Disconnect the combination meter connector. Using the tester, measure the resistance between terminals. Connector & terminal (i10) No. 32 - No. 33 | Is the resistance 400 ohms or more? | Related lines between combination meter and main wiring harness is open, or main wiring harness is open at two places or more. | Go to step 2 . |
| 2 CHECK RELATED LINES . Using the tester, measure the resistance between terminals. Connector & terminal (i10) No. 32 - (B40) No. 14: (i10) No. 33 - (B40) No. 6 | Is the resistance 10 ohms or more? | Repair or replace the open circuit portion of combination meter related lines. | Check DTC of combination meter. < Ref. to OPERATION , Read Diagnostic Trouble Code (DTC). > |
CAN communication system < Ref. to WIRING DIAGRAM , CAN Communication System. >
- Non-turbo model
- Turbo model
| Step | Check | Yes | No |
|---|---|---|---|
| 1 CHECK BETWEEN RELATED LINES AND MAIN WIRING HARNESS . Disconnect the MFD connector. Using the tester, measure the resistance between terminals. Connector & terminal (i122) No. 5 - No. 6 | Is the resistance 400 ohms or more? | Related lines between MFD and main wiring harness is open, or main wiring harness is open at two places or more. | Go to step 2 . |
| 2 CHECK RELATED LINES . Using the tester, measure the resistance between terminals. Connector & terminal (i122) No. 5 - (B40) No. 14: (i122) No. 6 - (B40) No. 6 | Is the resistance 10 ohms or more? | Repair or replace the open circuit of MFD related lines. | Check DTC of MFD. < Ref. to OPERATION , Read Diagnostic Trouble Code (DTC). > |
CAN communication system < Ref. to WIRING DIAGRAM , CAN Communication System. >
- Non-turbo model
- Turbo model
| Step | Check | Yes | No |
|---|---|---|---|
| 1 CHECK BETWEEN RELATED LINES AND MAIN WIRING HARNESS . NOTE: For test harness, refer to AIRBAG SYSTEM (DIAGNOSTICS). < Ref. to PREPARATION TOOL , General Description. > Turn the ignition switch to OFF, disconnect the battery ground cable, and wait for 60 seconds or more. Remove the instrument panel lower cover and column cover, and disconnect the connectors (AB7) and (AB2). Remove the console front panel and disconnect the connector (AB9). Disconnect the connectors (AB6, AB17, AB18) from airbag control module. Connect the connector (1AH) in the test harness AH to the connectors (AB6, AB17, AB18). Connect the connector (2AH) in the test harness AH and the connector (1AG) in the test harness AG. Using the tester, measure the resistance between terminals. Connector & terminal (2AG) No. 2 - (4AG) No. 2 | Is the resistance 400 ohms or more? | Related lines between A/B Control Module and main wiring harness is open, or main wiring harness is open at two places or more. | Go to step 2 . |
| 2 CHECK RELATED LINES . Using the tester, measure the resistance between terminals. Connector & terminal (2AG) No. 2 - (B40) No. 14: (4AG) No. 2 - (B40) No. 6 | Is the resistance 10 ohms or more? | Repair or replace the open circuit of A/B Control Module related lines. | Check DTC of A/B Control Module. < Ref. to OPERATION , Read Diagnostic Trouble Code (DTC). > |
| NOTE |
|---|
| For test harness, refer to AIRBAG SYSTEM (DIAGNOSTICS). < Ref. to PREPARATION TOOL , General Description. > |
CAN communication system < Ref. to WIRING DIAGRAM , CAN Communication System. >
- Non-turbo model
- Turbo model
| Step | Check | Yes | No |
|---|---|---|---|
| 1 CHECK BETWEEN RELATED LINES AND MAIN WIRING HARNESS . Disconnect the Keyless Access Control Module connector. Using the tester, measure the resistance between terminals. Connector & terminal (B574) No. 14 - No. 15 | Is the resistance 400 ohms or more? | Related lines between Keyless Access Control Module and main wiring harness is open, or main wiring harness is open at two places or more. | Go to step 2 . |
| 2 CHECK RELATED LINES . Using the tester, measure the resistance between terminals. Connector & terminal (B574) No. 15 - (B40) No. 14: (B574) No. 14 - (B40) No. 6 | Is the resistance 10 ohms or more? | Repair or replace the open circuit portion of Keyless Access Control Module related lines. | Check DTC of Keyless Access Control Module. < Ref. to OPERATION , Read Diagnostic Trouble Code (DTC). > |
CAN communication system < Ref. to WIRING DIAGRAM , CAN Communication System. >
- Non-turbo model
- Turbo model
| Step | Check | Yes | No |
|---|---|---|---|
| 1 CHECK BETWEEN RELATED LINES AND MAIN WIRING HARNESS . Disconnect the stereo camera connector. Using the tester, measure the resistance between terminals. Connector & terminal (R137) No. 10 - No. 9 | Is the resistance 400 ohms or more? | Related lines between stereo camera and main wiring harness is open, or main wiring harness is open at two places or more. | Go to step 2 . |
| 2 CHECK RELATED LINES . Using the tester, measure the resistance between terminals. Connector & terminal (R137) No. 9 - (B40) No. 14: (R137) No. 10 - (B40) No. 6 | Is the resistance 10 ohms or more? | Repair or replace the open circuit portion of stereo camera related lines. | Check DTC of stereo camera. < Ref. to OPERATION , Read Diagnostic Trouble Code (DTC). > |
CAN communication system < Ref. to WIRING DIAGRAM , CAN Communication System. >
- Non-turbo model
- Turbo model
| Step | Check | Yes | No |
|---|---|---|---|
| 1 CHECK BETWEEN RELATED LINES AND MAIN WIRING HARNESS . Disconnect the Remote Engine Start Control Module connector. Using the tester, measure the resistance between terminals. Connector & terminal Without push button start (B180) No. 1 - (B180) No. 2: With push button start (B180) No. 2 - (B180) No. 3 | Is the resistance 400 ohms or more? | Related lines between Remote Engine Start Control Module and main wiring harness is open, or main wiring harness is open at two places or more. | Go to step 2 . |
| 2 CHECK RELATED LINES . Using the tester, measure the resistance between terminals. Connector & terminal Without push button start (B180) No. 1 - (B40) No. 6: (B180) No. 2 - (B40) No. 14: With push button start (B180) No. 2 - (B40) No. 6: (B180) No. 3 - (B40) No. 14 | Is the resistance 10 ohms or more? | Repair or replace the open circuit portion of Remote Engine Start Control Module related lines. | The communication harness is normal. Check the Remote Engine Starter Control Module or the mobile key. |
CAN communication system < Ref. to WIRING DIAGRAM , CAN Communication System. >
- Non-turbo model
- Turbo model
| Step | Check | Yes | No |
|---|---|---|---|
| 1 CHECK BETWEEN RELATED LINES AND MAIN WIRING HARNESS . Disconnect the Headlight Beam Leveler Control Module connector. Using the tester, measure the resistance between terminals. Connector & terminal (B150) No. 23 - No. 24 | Is the resistance 400 ohms or more? | Related lines between Headlight Beam Leveler Control Module and main wiring harness is open, or main wiring harness is open at two places or more. | Go to step 2 . |
| 2 CHECK RELATED LINES . Using the tester, measure the resistance between terminals. Connector & terminal (B150) No. 24 - (B40) No. 14: (B150) No. 23 - (B40) No. 6 | Is the resistance 10 ohms or more? | Repair or replace the open circuit portion of Headlight Beam Leveler Control Module related lines. | Check DTC of headlight beam leveler system. |
CAN communication system < Ref. to WIRING DIAGRAM , CAN Communication System. >
- Non-turbo model
- Turbo model
| Step | Check | Yes | No |
|---|---|---|---|
| 1 CHECK BETWEEN RELATED LINES AND MAIN WIRING HARNESS . Disconnect the impact sensor connector. Using the tester, measure the resistance between terminals. Connector & terminal (B367) No. 5 - No. 6 | Is the resistance 400 ohms or more? | Related lines between the impact sensor and main wiring harness is open, or main wiring harness is open at two places or more. | Go to step 2 . |
| 2 CHECK RELATED LINES . Using the tester, measure the resistance between terminals. Connector & terminal (B367) No. 6 - (B40) No. 14: (B367) No. 5 - (B40) No. 6 | Is the resistance 10 ohms or more? | Repair or replace the open circuit of the impact sensor system related lines. | The communication harness is normal. Check the impact sensor. |
CAN communication system < Ref. to WIRING DIAGRAM , CAN Communication System. >
- Non-turbo model
- Turbo model
| Step | Check | Yes | No |
|---|---|---|---|
| 1 CHECK BETWEEN RELATED LINES AND MAIN WIRING HARNESS . Disconnect the yaw rate & G sensor connector. Using the tester, measure the resistance between terminals. Connector & terminal (B230) No. 2 - No. 3 | Is the resistance 400 ohms or more? | Related lines between yaw rate & G sensor and main wiring harness is open, or main wiring harness is open at two places or more. | Go to step 2 . |
| 2 CHECK RELATED LINES . Using the tester, measure the resistance between terminals. Connector & terminal (B230) No. 3 - (B40) No. 14: (B230) No. 2 - (B40) No. 6 | Is the resistance 10 ohms or more? | Repair or replace the open circuit portion of yaw rate & G sensor related lines. | Check DTC of VDC system. |
Power rear gate system < Ref. to WIRING DIAGRAM , Power Rear Gate System. >
Scheme 21
| Step | Check | Yes | No |
|---|---|---|---|
| 1 CHECK DTC . Read the DTC of body integrated unit using Subaru Select Monitor. | Is U1602 a current malfunction? | Go to step 2 . | It is possible that temporary poor contact occurs. Perform the clear memory. |
| 2 CHECK DTC . Turn the ignition switch to OFF. Disconnect the power rear gate Control Module and body integrated unit connectors. Connect the disconnected connectors. Using the Subaru Select Monitor, read DTC of CAN system. | Is U1602 a current malfunction? | Go to step 3 . | It is possible that temporary poor contact occurs. Perform the clear memory. |
| 3 CHECK HARNESS . Turn the ignition switch to OFF. Disconnect the power rear gate Control Module and body integrated unit connectors. Using the tester, measure the resistance between terminals. Connector & terminal (i171) No. 16 - (R423) No. 1: (R422) No. 14 - Chassis ground: (R423) No. 8 - Chassis ground | Is the resistance less than 10 ohms? | Go to step 4 . | Repair the open circuit of harness. |
| 4 CHECK HARNESS . Using the tester, measure the resistance between terminals. Connector & terminal (R423) No. 1 - Chassis ground | Is the resistance 10 kohms or more? | Go to step 5 . | Repair the shorted portion of harness. |
| 5 CHECK HARNESS . Turn the ignition switch to ON. Using the tester, measure the voltage between terminals. Connector & terminal (R423) No. 1 (+) - Chassis ground (-) | Is the voltage less than 1 V? | Go to step 6 . | Repair the shorted portion of harness. |
| 6 CHECK HARNESS . Using the tester, measure the voltage between terminals. Connector & terminal (R422) No. 1 (+) - Chassis ground (-): (R422) No. 10 (+) - Chassis ground (-): (R422) No. 8 (+) - Chassis ground (-) | Is the voltage 9 V or more when the IG switch is ON? | Go to step 7 . | Repair the open circuit of harness. |
| 7 CHECK POWER REAR GATE SYSTEM . Perform the inspection of the power rear gate system. < Ref. to PROCEDURE , Basic Diagnostic Procedure. > | Is there any fault? | Perform the inspection according to the inspection of the power rear gate system. | Go to step 8 . |
| 8 CHECK CONTROL MODULE . Turn the ignition switch to OFF. Replace the power rear gate Control Module with a properly functioning part. Using the Subaru Select Monitor, read DTC of CAN system. | Is U1602 a current malfunction? | Perform the basic diagnostic procedure of the body control system < Ref. to PROCEDURE , Basic Diagnostic Procedure. >, and if there is no problem, replace the body integrated unit. < Ref. to REMOVAL , Body Integrated Unit. > | System is normal. |
DTC PROCEDURE