WIRING DIAGRAM
SYSTEM WIRING DIAGRAMS for Legacy or SYSTEM WIRING DIAGRAMS for Outback .> AIR CONDITIONING for Legacy or AIR CONDITIONING for Outback .>
| Step | Check | Yes | No |
|---|---|---|---|
| 1 CHECK FUSE. Turn the ignition switch to OFF. Remove the fuse (No. 8). | Is the fuse blown out? | Replace the fuse (No. 8). If the replaced fuse has blown out easily, repair the short circuit of harness between fuse (No. 8) and body integrated unit. | Go to step 2 . |
| 2 CONTINUITY CHECK OF WIRING HARNESS. Disconnect the connector (B280) from body integrated unit. Measure the voltage between body integrated unit connector and chassis ground. Connector & terminal (B280) No. 7 (+) - Chassis ground (-) | Is the voltage 10 V or more? | Go to step 3. | Repair the harness for open or shorted circuit between body integrated unit and fuse. |
| 3 CHECK POOR CONTACT OF CONNECTORS. | Is there poor contact in body integrated unit connector? | Repair the poor contact of connector. | Go to step 4 . |
| 4 CHECK BODY INTEGRATED UNIT HARNESS. Connect all connectors. Perform the Clear Memory Mode. Read DTC. | Is the same DTC displayed? | Replace the body integrated unit. BODY INTEGRATED UNIT .> | Temporary poor contact occurs. |
DIAGNOSTIC PROCEDURE CHART
| Step | Check | Yes | No |
|---|---|---|---|
| 1 CHECK FUSE. Turn the ignition switch to OFF. Remove the fuse (No. 31). | Is the fuse blown out? | Replace the fuse (No. 31). If the replaced fuse has blown out easily, repair the short circuit of harness between fuse (No. 31) and body integrated unit. | Go to step 2 . |
| 2 CONTINUITY CHECK OF WIRING HARNESS. Disconnect the connector (i84) from body integrated unit. Turn the ignition switch to ON. Measure the voltage between body integrated unit connector and chassis ground. Connector & terminal (i84) No. 24 (+) - Chassis ground (-) | Is the voltage 10 V or more? | Go to step 3. | Repair the harness for open or shorted circuit between body integrated unit and fuse. |
| 3 CHECK POOR CONTACT OF CONNECTOR. | Is there poor contact in body integrated unit connector? | Repair the poor contact of connector. | Go to step 4 . |
| 4 CHECK BODY INTEGRATED UNIT HARNESS. Connect all connectors. Perform the Clear Memory Mode. Read DTC. | Is DTC displayed? | Replace the body integrated unit. BODY INTEGRATED UNIT .> | Temporary poor contact occurs. |
DIAGNOSTIC PROCEDURE CHART
- VDC model
- ABS model
| Step | Check | Yes | No |
|---|---|---|---|
| 1 CHECK DTC. Check DTC indicated by body integrated unit. | Does the displayed DTC indicate current malfunction? | Check the connection of harness connectors. Go to step 2. | Go to step 2 . |
| 2 CHECK DTC. Turn the ignition switch to OFF and read DTCs again. | Does the displayed DTC indicate current malfunction? | Check the connection of harness connectors. Go to step 4. | Go to step 3 . |
| 3 CHECK CURRENT DATA. Using the Subaru Select Monitor, display engine speed and vehicle speed signal from EGM, TCM, VDC/ABS and body integrated unit under the same conditions and compare data. | Does each data match each other? | Temporary poor contact occurs. Perform the clear memory operation. | Go to step 4 . |
| 4 CHECK TCM. Disconnect the TCM connector (B54). Perform the clear memory operation for the body integrated unit. CLEAR MEMORY MODE .> Read DTC of the body integrated unit. | Is DTC (U1202) displayed? | Go to step 5. | Check the TCM. SUBARU SELECT MONITOR . > |
| 5 CHECK STEERING ANGLE SENSOR. Disconnect the steering angle sensor connector (B231). Perform Clear Memory Mode for the body integrated unit. CLEAR MEMORY MODE .> Read DTC of the body integrated unit. | Is DTC (U1202) displayed? | Go to step 6. | Replace the steering angle sensor. REPLACEMENT .> |
| 6 CHECK YAW RATE SENSOR. Disconnect the yaw rate sensor connector (B230). Perform Clear Memory Mode for the body integrated unit. Read DTC of the body integrated unit. | Is DTC (U1202) displayed? | Go to step 7. | Check the yaw rate sensor. READ DIAGNOSTIC TROUBLE CODE (DTC) .> |
| 7 CHECK BODY INTEGRATED UNIT. Disconnect the body integrated unit connector (i84). Read data between VDC/ABS CM and ECM. Check item: Engine speed Average front wheel speed (at constant speed) | Engine speed and front wheel speed are normal in communication. (Their values are the same.) | Replace the body integrated unit. BODY INTEGRATED UNIT .> | Go to step 8 . |
| 8 CHECK HARNESS. Disconnect the body integrated unit connector (B280). Measure the resistance between harness connector terminals. Connector & terminal (B280) No. 20 - No. 30 | Is the resistance between 55 - 65 ohms? | Go to step 14. | Go to step 9 . |
| 9 CHECK HARNESS. Disconnect the body integrated unit connector (B280). Measure the resistance between harness connector terminals. Connector & terminal (B280) No. 20 - No. 30 | Is the resistance between 115 - 125 ohms? | Go to step 11. | Go to step 10 . |
| 10 CHECK HARNESS. Disconnect the harness connector of body integrated unit. Measure the resistance between harness connector terminals. Connector & terminal (B280) No. 20 - No. 30 | Is the resistance 30 Mohms or more? | Open circuit in related line of body integrated unit. Repair the open circuit of harness or replace harness. | Go to step 11 . |
| 11 CHECK HARNESS. Disconnect the VDC/ABS CM connector. Measure the resistance between harness connector terminals. Connector & terminal VDC model: (B310)No.10 - No.35: ABS model: (B301)No. 11 - No. 26 | Is the resistance between 115 - 125 ohms? | Go to step 12. | Go to step 13 . |
| 12 CHECK VDC/ABS CU. Disconnect the VDC/ABS CU connector. Measure the resistance between VDC/ABS CU connector terminals. Connector & terminal VDC model: (B310)No.10 - No.35: ABS model: (B301)No. 11 - No.26 | Is the resistance between 115 - 125 ohms? | Go to step 13. | End resistance of VDC/ABS CU is open. Replace the VDC/ABS CU. VDC CONTROL MODULE AND HYDRAULIC CONTROL UNIT (VDCCM&H/U) . > |
| 13 CHECK ECM. Disconnect the ECM connector (B135 or B136). Measure the resistance between ECM connector terminals. Connector & terminal (B136) No. 27 - No. 35 | Is the resistance between 115-125 ohms? | Repair or replace the open circuit of the harness connector. | End resistance of ECM is open. Replace the ECM. ENGINE CONTROL MODULE (ECM) . > |
| 14 CHECK HARNESS. Disconnect the body integrated unit connector (B280). Measure the resistance between body integrated unit connector and chassis ground. Connector & terminal (B280) No. 20 - Chassis ground: (B280) No. 30 - Chassis ground | Is the resistance less than 10 ohms? | Go to step 15. | Go to step 16 . |
| 15 CHECK CONTROL MODULE. Turn the ignition switch to ON. Disconnect each control module connector one by one with the tester connected to vehicle side harness. Connector & terminal (B280) No. 20 - Chassis ground: (B280) No. 30 - Chassis ground | Are there any modules whose resistance has become 10 ohms or more? | Replace modules whose resistance has become 10 ohms or more. | Repair or replace the short circuit of the harness. |
| 16 CHECK HARNESS. Disconnect the body integrated unit connector (B280). Measure the voltage between body integrated unit connector and chassis ground. Connector & terminal (B280) No. 20 (+) - Chassis ground (-): (B280) No. 30 (+) - Chassis ground (-) | Is the voltage 6 V or more? | Go to step 17. | Go to step 18 . |
| 17 CHECK CONTROL MODULE. Turn the ignition switch to ON. Disconnect each control module connector one by one with the tester connected to vehicle side harness. Connector & terminal (B280) No. 20 - Chassis ground: (B280) No. 30 - Chassis ground | Is there any module for which the voltage has changed to 6 V or less? | Replace modules whose voltage has changed to 6 V or less. | Repair or replace the short circuit of the harness. |
| 18 CHECK DTC. Connect the Subaru Select Monitor and read the Diagnostic Trouble Code (DTC) of ECM. OPERATION .> | Is DTC other than "CAN communication" displayed? | Perform the diagnosis according to DTC. | Go to step 19 . |
| 19 CHECK DTC. Connect the Subaru Select Monitor and read the Diagnostic Trouble Code (DTC) of VDC/ABS CU. READ DIAGNOSTIC TROUBLE CODE (DTC) .> | Is DTC other than "CAN communication" or "C0057" displayed? | Perform the diagnosis according to DTC. | Go to step 20 . |
| 20 CHECK DTC. Connect the Subaru Select Monitor and read the Diagnostic Trouble Code (DTC) of TCM. OPERATION .> | Is DTC other than "CAN communication" displayed? | Perform the diagnosis according to DTC. | Replace the body integrated unit. BODY INTEGRATED UNIT .> |
DIAGNOSTIC PROCEDURE CHART
| Step | Check | Yes | No |
|---|---|---|---|
| 1 CHECK DTC. Connect the Subaru Select Monitor to read all DTCs. | Are there DTCs other than that of body integrated unit? | Perform the diagnosis according to DTCs for other control units. | Go to step 2 . |
| 2 CHECK DTC. Check DTC indicated by body integrated unit. | Does the displayed DTC indicate current malfunction? | Check the connection of harness connectors. Go to step 3. | Go to step 3 . |
| 3 CHECK DTC. Turn the ignition switch to OFF and read DTCs again. | Does the displayed DTC indicate current malfunction? | Go to step 5. | Go to step 4 . |
| 4 CHECK CURRENT DATA. Using the Subaru Select Monitor, display engine speed and vehicle speed signal from EGM, TCM, VDC/ABS and body integrated unit under the same conditions and compare data. | Does each data match each other? | Temporary poor contact occurs. Perform the clear memory operation. | Go to step 5 . |
| 5 CHECK HARNESS. Disconnect the body integrated unit connector (B280). Measure the resistance between harness connectors. Connector & terminal (B280) No. 20 - No. 30 | Is the resistance 55 - 65 ohms? (Specification 60 ohms) | Go to step 8. | Go to step 6 . |
| 6 CHECK HARNESS. Disconnect the body integrated unit connector (B280). Measure the resistance between harness connectors. Connector & terminal (B280)No.20 - No.30 | Is the resistance 115 - 125 ohms? (End resistance or main wiring harness is open.) | Go to step 7. | If the resistance is 1 M ohms or larger, a line related to the body integrated unit is open. Repair the open circuit of harness or replace harness. |
| 7 CHECK ECM. Read the DTC of ECM using the Subaru Select Monitor. READ DIAGNOSTIC TROUBLE CODE (DTC) FOR ENGINE (NORMAL MODE) .> | Are there any DTCs other than one for "CAN communication"? | Perform the diagnosis according to DTC. READ DIAGNOSTIC TROUBLE CODE (DTC) FOR ENGINE (NORMAL MODE) .> | Go to step 8 . |
| 8 CHECK BODY INTEGRATED UNIT. Connect all the control module connectors. Check the data of "body integrated unit data received" on the current data display of ECM using Subaru Select Monitor. | Is the "Yes" displayed? | Go to step 9. | Replace the body integrated unit. BODY INTEGRATED UNIT .> |
| 9 CHECK BODY INTEGRATED UNIT. Check the data of "body integrated unit counter update" on the data display of ECM. | Is the "Yes" displayed? | Replace the body integrated unit. BODY INTEGRATED UNIT .> | Inspect the ECM. REMOVAL .> REMOVAL .> ENGINE CONTROL MODULE (ECM) . > |
DIAGNOSTIC PROCEDURE CHART
| Step | Check | Yes | No |
|---|---|---|---|
| 1 CHECK DTC. Connect the Subaru Select Monitor to read all DTCs. | Are there DTCs other than that of body integrated unit? | Perform the diagnosis according to DTCs for other control units. | Go to step 2 . |
| 2 CHECK DTC. Check DTC indicated by body integrated unit. | Does the displayed DTC indicate current malfunction? | Check the connection of harness connectors. Go to step 3. | Go to step 3 . |
| 3 CHECK DTC. Turn the ignition switch to OFF and read DTCs again. | Does the displayed DTC indicate current malfunction? | Go to step 5. | Go to step 4 . |
| 4 CHECK CURRENT DATA. Using the Subaru Select Monitor, display engine speed and vehicle speed signal from EGM, TCM, VDC/ABS and body integrated unit under the same conditions and compare data. | Does each data match each other? | Temporary poor contact occurs. Perform the clear memory operation. | Go to step 5 . |
| 5 CHECK HARNESS. Disconnect the TCM connector (B54). Measure the resistance between harness connector terminals. Connector & terminal 4AT model: (B54)No.17 - No. 18: 5AT model: (B54) No. 3 - No. 4 | Is the resistance 1 Mohms or more? | Open circuit in related lines of TCM. Repair the open circuit of harness or replace harness. | Go to step 6 . |
| 6 CHECK TCM. Read the DTC of the TCM using Subaru Select Monitor. OPERATION .> | Is DTC other than "CAN communication" displayed? | Perform the diagnosis according to DTC. | Go to step 7 . |
| 7 CHECK BODY INTEGRATED UNIT. Connect all the control module connectors. Check the data of "body integrated unit data received" on the current data display of ECM using Subaru Select Monitor. | Is the "Yes" displayed? | Go to step 8. | Replace the body integrated unit. BODY INTEGRATED UNIT .> |
| 8 CHECK BODY INTEGRATED UNIT. Check the data of "body integrated unit counter update" on the data display of ECM. | Is the "Yes" displayed? | Replace the TCM. REMOVAL , REMOVAL, Transmission Control Module (TCM) .> REMOVAL , Transmission Control Module (TCM) .> | Replace the body integrated unit. BODY INTEGRATED UNIT .> |
DIAGNOSTIC PROCEDURE CHART
| Step | Check | Yes | No |
|---|---|---|---|
| 1 CHECK DTC. Connect the Subaru Select Monitor to read all DTCs. | Are there DTCs other than that of body integrated unit? | Perform the diagnosis according to DTCs for other control units. | Go to step 2 . |
| 2 CHECK DTC. Check DTC indicated by body integrated unit. | Does the displayed DTC indicate current malfunction? | Check the connection of harness connectors. Go to step 3. | Go to step 3 . |
| 3 CHECK DTC. Turn the ignition switch to OFF and read DTCs again. | Does the displayed DTC indicate current malfunction? | Go to step 5. | Go to step 4 . |
| 4 CHECK CURRENT DATA. Using the Subaru Select Monitor, display engine speed and vehicle speed signal from EGM, TCM, VDC/ABS and body integrated unit under the same conditions and compare data. | Does each data match each other? | Temporary poor contact occurs. Perform the clear memory operation. | Go to step 5 . |
| 5 CHECK HARNESS. Disconnect the harness connector of body integrated unit. Measure the resistance between harness connector terminals. Connector & terminal (B280) No. 20 - No. 30 | Is the resistance between 55 - 65 ohms? | Go to step 6. | Open circuit in related line of body integrated unit. Repair the open circuit of harness or replace harness. |
| 6 CHECK VDC/ABS CU. Connect all connectors. Read the DTC of VDC/ABS CU using the Subaru Select Monitor. | Is DTC other than "CAN communication" displayed? | Perform the diagnosis according to DTC of VDC/ABS CU. | Go to step 7 . |
| 7 CHECK BODY INTEGRATED UNIT. Connect all the control module connectors. Check the data of "body integrated unit data received" on the current data display of ECM using Subaru Select Monitor. | Is the "Yes" displayed? | Go to step 8. | Replace the body integrated unit. BODY INTEGRATED UNIT .> |
| 8 CHECK BODY INTEGRATED UNIT. Check the data of "body integrated unit counter update" on the data display of ECM. | Is the "Yes" displayed? | Replace the VDC/ABS CU. REMOVAL .> ABS CONTROL MODULE AND HYDRAULIC CONTROL UNIT (ABSCM&/U) .> | Replace the body integrated unit. BODY INTEGRATED UNIT .> |
DIAGNOSTIC PROCEDURE CHART
| Step | Check | Yes | No |
|---|---|---|---|
| 1 CHECK DTC. Connect the Subaru Select Monitor to read DTC of body integrated unit. | Are there DTCs other than U1302? | Perform the diagnosis according to other DTCs. | Go to step 2 . |
| 2 CHECK DTC. Check DTC indicated by body integrated unit. | Does the displayed DTC indicate current malfunction? | Check the connection of harness connectors. Go to step 3. | Go to step 3 . |
| 3 CHECK DTC. Turn the ignition switch to OFF and read DTCs again. | Is U1302 current malfunction? | Go to step 4. | Temporary poor contact occurs. |
| 4 CHECK CURRENT DATA. Display the current data (Auto A/C failure) of body integrated unit using the Subaru Select Monitor. | Is OK displayed? | Go to step 5. | Perform auto A/C self-diagnosis. OPERATION .> |
| 5 CHECK AUTO A/C ECM. Turn the ignition switch to OFF. Disconnect the auto A/C ECM connector (B283). Connect the Subaru Select Monitor and then turn the ignition switch to ON. Perform the clear memory operation for the body integrated unit. Read the DTC of the body integrated unit. | Is DTC U1302 detected? | Go to step 7. | Go to step 6 . |
| 6 CHECK HARNESS. Disconnect the body integrated unit connector (B280) and auto A/C control module connector (B283). Check open or short conditions between body integrated unit connector and auto A/C control module connector. Connector & terminal (B283) No. 1 - (B280) No. 26: (B283) No. 11 - (B280) No. 27 | Is harness normal? | Repalce auto A/C ECM. REMOVAL .> | Repair or replace the open or short circuit of harness. |
| 7 CHECK CURRENT DATA. Check current data (center display failure) of the body integrated unit. | Is OK displayed? | Go to step 8. | Repair or replace the center display. REMOVAL .> |
| 8 CHECK CENTER DISPLAY. Turn the ignition switch to OFF. Disconnect the center display connector (i119). Connect the Subaru Select Monitor and then turn the ignition switch to ON. Perform the clear memory operation for the body integrated unit. Read the DTC of the body integrated unit. | Is DTC U1302 detected? | Go to step 10. | Go to step 9 . |
| 9 CHECK HARNESS. Disconnect the body integrated unit connector (B280) and center display connector (i119). Check open or short conditions between body integrated unit connector and center display connector. Connector & terminal (i119) No. 14 - (i84) No. 26: (i119) No. 6 - (i84) No. 27 | Is harness normal? | Replace the center display. REMOVAL .> | Repair or replace the open or short circuit of harness. |
| 10 CHECK CURRENT DATA. Check current data (meter failure) of the body integrated unit. | Is OK displayed? | Go to step 11. | Replace the combination meter. REMOVAL .> |
| 11 CHECK COMBINATION METER. Turn the ignition switch to OFF. Disconnect the combination meter connector 010). Connect the Subaru Select Monitor and then turn the ignition switch to ON. Perform the clear memory operation for the body integrated unit. Read the DTC of the body integrated unit. | Is DTC U1302 detected? | Go to step 13. | Go to step 12 . |
| 12 CHECK HARNESS. Disconnect the combination meter connector (i10). Check open or short conditions between body integrated unit connector and combination meter connector. Connector & terminal (i10) No. 21 - (i84) No. 27: (i10) No. 22 - (i84) No. 26 | Is harness normal? | Replace the combination meter. REMOVAL .> | Repair or replace the open or short circuit of harness. |
| 13 CHECK HARNESS. Disconnect connectors of A/C ECM (B283), center monitor (i119), combination meter (i10) and body integrated unit connector (i84). Measure the resistance between connector terminals. Connector & terminal (i84) No. 27 - (i84) No. 26 | Is the resistance 1 Mohms or more? | Go to step 14. | Repair the short circuit of harness or replace harness. |
| 14 CHECK HARNESS. Connect the junction connector. Measure the resistance between body integrated unit connector and chassis ground. Connector & terminal (B280) No. 27 - Chassis ground: (B280) No. 26 - Chassis ground: (i84) No. 26 - Chassis ground: (i84) No. 27 - Chassis ground | Is the resistance less than 10 ohms? | Repair the short circuit of harness or replace harness. | Go to step 15 . |
| 15 CHECK HARNESS. Turn the ignition switch to ON. Measure the voltage between body integrated unit connector and chassis ground. Connector & terminal (B280) No. 27 (+) - Chassis ground (-): (B280) No. 26 (+) - Chassis ground (-): (i84) No. 26 (+) - Chassis ground (-): (i84) No. 27 (+) - Chassis ground (-) | Is the voltage 6 V or more? | Repair the short circuit of harness or replace harness. | Replace the body integrated unit. BODY INTEGRATED UNIT .> |
DIAGNOSTIC PROCEDURE CHART
| Step | Check | Yes | No |
|---|---|---|---|
| 1 CHECK COMMUNICATION LINE. Warm up the engine. Compare the data of body integrated unit and combination meter using Subaru Select Monitor. Check item: Engine speed Shift range | Is the data displayed same? | Go to step 2. | Perform self-diagnosis of the combination meter. SELF-DIAGNOSIS .> |
| 2 CHECK HARNESS. Disconnect the body integrated unit and combination meter connector. Measure the resistance between harness connectors. Connector & terminal (i10) No. 21 - (i84) No. 27: (i10) No. 22 - (i84) No. 26 | Is the resistance less than 10 ohms? | Go to step 4. | Go to step 3 . |
| 3 CHECK HARNESS. Disconnect the CAN joint connectors (i 106 and i107) with the connector of the unit disconnected. Measure the resistance between harness connectors. Connector & terminal (i10) No. 21 - (i106) No. 1 - 4: (i10) No. 22 - (i106) No. 1 - 4: (i84) No. 27 - (i107) No. 1 - 4: (i84) No. 26 - (i107) No. 1 - 4 | Is the resistance less than 10 ohms? | Go to step 4. | Repair or replace the open circuit of harness. |
| 4 CHECK HARNESS. Measure the resistance between harness connectors (i106 and i107) and chassis ground. Connector & terminal (i106) No. 1 - 4 - Chassis ground: (i107) No. 1 - 4 - Chassis ground | Is the resistance less than 10 ohms? | Repair the short circuit of harness or replace harness. | Go to step 5 . |
| 5 CHECK HARNESS. Turn the ignition switch to ON. Measure the voltage between harness connectors (i106 and i107) and chassis ground. Connector & terminal (i106) No. 1-4 (+) - Chassis ground (-): (i107) No. 1-4(+) - Chassis ground (-) | Is the voltage 6 V or more? | Repair the short circuit of harness or replace harness. | Go to step 6 . |
| 6 CHECK COMBINATION METER. Perform self-diagnosis of the combination meter. SELF-DIAGNOSIS .> | Is the self-diagnosis OK? | Temporary poor contact occurs. Check the connection of each connector. | Replace the combination meter. REMOVAL .> |
DIAGNOSTIC PROCEDURE CHART