WIRING DIAGRAM
Ref. to COMPUTER DATA LINES , WIRING DIAGRAM, CAN Communication System .
| Step | Check | Yes | No |
|---|---|---|---|
| 1 CHECK CAN COMMUNICATION CIRCUIT. Check CAN communication circuit. Ref. to PROCEDURE , CAN Communication Circuit Check. | Is CAN communication circuit faulty? | Repair the faulty portion, following the diagnosis procedure. | Go to step 2 . |
| 2 CHECK DTC. Start the engine. Using the Subaru Select Monitor, read DTC of CAN system. | Is U1202 a current malfunction? | Go to step 3 . | It may be a temporary poor contact. Perform the clear memory. |
| 3 CHECK CONTROL MODULE. Turn the ignition switch to OFF. Disconnect the control modules other than body integrated unit in order. NOTE: When Disconnecting ECM or VDC CM, connect resistance of 120 ohms between CAN Hi and CAN Lo as an alternative of end resistance. Turn the ignition switch to ON. Using the Subaru Select Monitor, read DTC of CAN system. | Is there any control module that U1201 is not detected as current malfunction? | Replace the control module. | Repeat 1) to 4) in step 5 until U1202 is not detected. |
| NOTE |
|---|
| When Disconnecting ECM or VDC CM, connect resistance of 120 ohms between CAN Hi and CAN Lo as an alternative of end resistance. |
DIAGNOSTIC PROCEDURE CHART
| Step | Check | Yes | No |
|---|---|---|---|
| 1 CHECK DTC. Using the Subaru Select Monitor, read all DTCs. | Is there DTC other than CAN system? | Perform the diagnosis according to DTCs for other control modules. | Go to step 2 . |
| 2 CHECK DTC. Check DTC indicated in CAN system. | Is U1212 a current malfunction? | Go to step 3 . | Go to step 4 . |
| 3 CHECK DTC. Turn the ignition switch to OFF. Disconnect the TCM connector. Connect the disconnected connectors. Using the Subaru Select Monitor, read DTC of CAN system. | Is U1212 a current malfunction? | Replace the TCM. Ref. to TRANSMISSION CONTROL MODULE (TCM) . | Go to step 4 . |
| 4 CHECK HARNESS. Shake the harness, and check for poor contact. Using the Subaru Select Monitor, read DTC of CAN system. | Is U1212 a current malfunction? | Repair the poor contact of harness, or replace the harness. | Go to step 5 . |
| 5 CHECK CONNECTOR. Check the connecter used for high speed CAN for poor contact. | Is there poor contact of connector? | Repair the connector that has poor contact, or replace harness. | A temporary communication failure may be a possible cause. Clear the DTC memory. |
DIAGNOSTIC PROCEDURE CHART
| Step | Check | Yes | No |
|---|---|---|---|
| 1 CHECK DTC. Using the Subaru Select Monitor, read all DTCs. | Is there DTC other than CAN system? | Perform the diagnosis according to DTCs for other control modules. | Go to step 2 . |
| 2 CHECK DTC. Check DTC indicated in CAN system. | Is U1219 a current malfunction? | Go to step 3 . | Go to step 4 . |
| 3 CHECK DTC. Turn the ignition switch to OFF, and read the DTC again. | Is U1219 a current malfunction? | Replace the electronic parking CM. Ref. to REMOVAL , Parking Brake Actuator. | Go to step 4 . |
| 4 CHECK ELECTRONIC PARKING CM. Disconnect the electronic parking CM connector. Using the Subaru Select Monitor, perform the clear memory. Using the Subaru Select Monitor, read DTC of CAN system. | Is the displayed DTC other than U1219? | Go to step 5 . | Replace the electronic parking CM. Ref. to REMOVAL , Parking Brake Actuator. |
| 5 CHECK ELECTRONIC PARKING CM. Connect the electronic parking CM connector. Using the Subaru Select Monitor, read DTC of electronic parking CM. Ref. to OPERATION , Subaru Select Monitor. | Is DTC other than CAN system displayed? | Perform the diagnosis according to DTC. | Replace the body integrated unit. Ref. to REMOVAL , Body Integrated Unit. |
DIAGNOSTIC PROCEDURE CHART
| Step | Check | Yes | No |
|---|---|---|---|
| 1 CHECK DTC. Using the Subaru Select Monitor, read all DTCs. | Is there DTC other than CAN system? | Perform the diagnosis according to DTCs for other control modules. | Go to step 2 . |
| 2 CHECK DTC. Check DTC indicated in CAN system. | Is U121A a current malfunction? | Go to step 3 . | Go to step 4 . |
| 3 CHECK DTC. Turn the ignition switch to OFF, and read the DTC again. | Is U121A a current malfunction? | Replace the combination meter. Ref. to REMOVAL , Combination Meter. | Go to step 4 . |
| 4 CHECK COMBINATION METER. Disconnect the combination meter connector. Using the Subaru Select Monitor, perform the clear memory. Using the Subaru Select Monitor, read DTC of CAN system. | Is the displayed DTC other than U121A? | Go to step 5 . | Replace the combination meter. Ref. to REMOVAL , Combination Meter. |
| 5 CHECK COMBINATION METER. Connect the combination meter connector. Using the Subaru Select Monitor, read DTC of combination meter. Ref. to SELF-DIAGNOSIS DISPLAY MODE , OPERATION, Combination Meter System. | Is DTC other than CAN system displayed? | Perform the diagnosis according to DTC. | Replace the body integrated unit. Ref. to REMOVAL , Body Integrated Unit. |
DIAGNOSTIC PROCEDURE CHART
| Step | Check | Yes | No |
|---|---|---|---|
| 1 CHECK DTC. Using the Subaru Select Monitor, read all DTCs. | Is there DTC other than CAN system? | Perform the diagnosis according to DTCs for other control modules. | Go to step 2 . |
| 2 CHECK DTC. Check DTC indicated in CAN system. | Is U121C a current malfunction? | Go to step 3 . | Go to step 4 . |
| 3 CHECK DTC. Turn the ignition switch to OFF, and read the DTC again. | Is U121C a current malfunction? | Replace SCM. Ref. to REMOVAL , Security Control Module. | Go to step 4 . |
| 4 CHECK SCM. Disconnect the connector from SCM. Using the Subaru Select Monitor, perform the clear memory. Using the Subaru Select Monitor, read DTC of CAN system. | Is the displayed DTC other than U121C? | Go to step 5 . | Replace SCM. Ref. to REMOVAL , Security Control Module. |
| 5 CHECK SCM. Connect the SCM connector. Using the Subaru Select Monitor, read DTC of immobilizer. Ref. to OPERATION , Read Diagnostic Trouble Code (DTC). | Is DTC other than CAN system displayed? | Perform the diagnosis according to DTC. | Replace the body integrated unit. Ref. to REMOVAL , Body Integrated Unit. |
DIAGNOSTIC PROCEDURE CHART
| Step | Check | Yes | No |
|---|---|---|---|
| 1 CHECK DTC. Using the Subaru Select Monitor, read all DTCs. | Is there DTC other than CAN system? | Perform the diagnosis according to DTCs for other control modules. | Go to step 2 . |
| 2 CHECK DTC. Check DTC indicated in CAN system. | Is U1221 a current malfunction? | Go to step 3 . | Go to step 7 . |
| 3 CHECK DTC. Turn the ignition switch to OFF. Disconnect the control module connector that is connected to high speed CAN. Connect the disconnected connectors. Using the Subaru Select Monitor, read DTC of CAN system. | Is U1221 a current malfunction? | Go to step 4 . | Go to step 7 . |
| 4 CHECK HARNESS. Turn the ignition switch to OFF. Disconnect the control module connector that is connected to high speed CAN. Using the tester, measure the resistance between terminals. Connector & terminal (B40) No. 6 - (B136) No. 17: (B40) No. 14 - (B136) No. 28 | Is the resistance 10 ohms or less? | Go to step 5 . | Repair the open circuit of harness or replace harness. |
| 5 CHECK DTC. Connect the disconnected connectors. Start the engine. Turn the ignition switch to OFF. Using the Subaru Select Monitor, read DTC of CAN system. | Is U1221 a current malfunction? | Go to step 6 . | Go to step 7 . |
| 6 CHECK DTC. Using the Subaru Select Monitor, read all DTCs. | Is P1718, C0044, C0045 detected? | Replace the ECM. Ref. to REMOVAL , Engine Control Module (ECM). | Replace the body integrated unit. Ref. to REMOVAL , Body Integrated Unit. |
| 7 CHECK HARNESS. Shake the harness, and check for poor contact. Using the Subaru Select Monitor, read DTC of CAN system. | Is U1221 a current malfunction? | Repair the poor contact of harness, or replace the harness. | Go to step 8 . |
| 8 CHECK CONNECTOR. Check the connecter used for high speed CAN for poor contact. | Is there poor contact of connector? | Repair the connector, or replace harness. | It may be a temporary communication malfunction. Delete the DTC. |
DIAGNOSTIC PROCEDURE CHART
| Step | Check | Yes | No |
|---|---|---|---|
| 1 CHECK DTC. Using the Subaru Select Monitor, read all DTCs. | Is there DTC other than CAN system? | Perform the diagnosis according to DTCs for other control modules. | Go to step 2 . |
| 2 CHECK DTC. Check DTC indicated in CAN system. | Is U1222 a current malfunction? | Go to step 3 . | Go to step 7 . |
| 3 CHECK DTC. Turn the ignition switch to OFF. Disconnect the control module connector that is connected to high speed CAN. Connect the disconnected connectors. Using the Subaru Select Monitor, read DTC of CAN system. | Is U1222 a current malfunction? | Go to step 4 . | Go to step 7 . |
| 4 CHECK HARNESS. Turn the ignition switch to OFF. Disconnect the control module connector that is connected to high speed CAN. Using the tester, measure the resistance between terminals. Connector & terminal (B40) No. 6 - (B55) No. 18 (CVT): (B40) No. 14 - (B55) No. 17 (CVT): (B40) No. 6 - (B54) No. 21 (5AT): (B40) No. 14 - (B54) No. 20 (5AT) | Is the resistance 10 ohms or less? | Go to step 5 . | Repair the open circuit of harness or replace harness. |
| 5 CHECK DTC. Connect the disconnected connectors. Start the engine. Turn the ignition switch to OFF (stop the engine). Using the Subaru Select Monitor, read DTC of CAN system. | Is U1222 a current malfunction? | Go to step 6 . | Go to step 7 . |
| 6 CHECK DTC. Using the Subaru Select Monitor, read all DTCs. | Is P1718, C0044, C0045 detected? | Replace the TCM. Ref. to REMOVAL , Transmission Control Module (TCM). | Replace the body integrated unit. Ref. to REMOVAL , Body Integrated Unit. |
| 7 CHECK HARNESS. Shake the harness, and check for poor contact. Using the Subaru Select Monitor, read DTC of CAN system. | Is U1222 a current malfunction? | Repair the open circuit of harness or replace harness. | Go to step 8 . |
| 8 CHECK CONNECTOR. Check the connecter used for high speed CAN for poor contact. | Is there poor contact of connector? | Repair the connector, or replace harness. | It may be a temporary communication malfunction. Delete the DTC. |
DIAGNOSTIC PROCEDURE CHART
| Step | Check | Yes | No |
|---|---|---|---|
| 1 CHECK DTC. Using the Subaru Select Monitor, read all DTCs. | Is there DTC other than CAN system? | Perform the diagnosis according to DTCs for other control modules. | Go to step 2 . |
| 2 CHECK DTC. Check DTC indicated in CAN system. | Is U1223 a current malfunction? | Go to step 3 . | Go to step 7 . |
| 3 CHECK DTC. Turn the ignition switch to OFF. Disconnect the control module connector that is connected to high speed CAN. Connect the disconnected connectors. Using the Subaru Select Monitor, read DTC of CAN system. | Is U1223 a current malfunction? | Go to step 4 . | Go to step 7 . |
| 4 CHECK HARNESS. Turn the ignition switch to OFF. Disconnect the control module connector that is connected to high speed CAN. Using the tester, measure the resistance between terminals. Connector & terminal (B40) No. 6 - (B310) No. 10: (B40) No. 6 - (B231) No. 3: (B40) No. 14 - (B310) No. 8: (B40) No. 14 - (B231) No. 2 | Is the resistance 10 ohms or less? | Go to step 5 . | Repair the open circuit of harness or replace harness. |
| 5 CHECK DTC. Connect the disconnected connectors. Start the engine. Turn the ignition switch to OFF. Using the Subaru Select Monitor, read DTC of CAN system. | Is U1223 a current malfunction? | Go to step 6 . | Go to step 7 . |
| 6 CHECK DTC. Using the Subaru Select Monitor, read all DTCs. | Is P1718 detected? | Replace the VDC CM. Ref. to REMOVAL , VDC Control Module and Hydraulic Control Unit (VDCCM&H/U). | Replace the body integrated unit. Ref. to REMOVAL , Body Integrated Unit. |
| 7 CHECK HARNESS. Shake the harness, and check for poor contact. Using the Subaru Select Monitor, read DTC of CAN system. | Is U1223 a current malfunction? | Repair the poor contact of harness, or replace the harness. | Go to step 8 . |
| 8 CHECK CONNECTOR. Check the connecter used for high speed CAN for poor contact. | Is there poor contact of connector? | Repair the connector, or replace harness. | It may be a temporary communication malfunction. Delete the DTC. |
DIAGNOSTIC PROCEDURE CHART
| Step | Check | Yes | No |
|---|---|---|---|
| 1 CHECK DTC. Using the Subaru Select Monitor, read all DTCs. | Is there DTC other than CAN system? | Perform the diagnosis according to DTCs for other control modules. | Go to step 2 . |
| 2 CHECK DTC. Check DTC indicated in CAN system. | Is U1229 a current malfunction? | Go to step 3 . | Go to step 4 . |
| 3 CHECK DTC. Turn the ignition switch to OFF, and read the DTC again. | Is U1229 a current malfunction? | Replace the electronic parking CM. Ref. to REMOVAL , Parking Brake Actuator. | Go to step 4 . |
| 4 CHECK ELECTRONIC PARKING CM. Disconnect the electronic parking CM connector. Using the Subaru Select Monitor, perform the clear memory. Using the Subaru Select Monitor, read DTC of CAN system. | Is the displayed DTC other than U1229? | Go to step 5 . | Replace the electronic parking CM. Ref. to REMOVAL , Parking Brake Actuator. |
| 5 CHECK ELECTRONIC PARKING CM. Connect the electronic parking CM connector. Using the Subaru Select Monitor, read DTC of electronic parking CM. Ref. to OPERATION , Subaru Select Monitor. | Is DTC other than CAN system displayed? | Perform the diagnosis according to DTC. | Replace the body integrated unit. Ref. to REMOVAL , Body Integrated Unit. |
DIAGNOSTIC PROCEDURE CHART
| Step | Check | Yes | No |
|---|---|---|---|
| 1 CHECK DTC. Using the Subaru Select Monitor, read all DTCs. | Is there DTC other than CAN system? | Perform the diagnosis according to DTCs for other control modules. | Go to step 2 . |
| 2 CHECK DTC. Check DTC indicated in CAN system. | Is U122B a current malfunction? | Go to step 3 . | Go to step 4 . |
| 3 CHECK DTC. Turn the ignition switch to OFF, and read the DTC again. | Is U122B a current malfunction? | Replace the A/C CM. Ref. to REMOVAL , Control Unit. | Go to step 4 . |
| 4 CHECK A/C CM. Disconnect the A/C CM connector. Using the Subaru Select Monitor, perform the clear memory. Using the Subaru Select Monitor, read DTC of CAN system. | Is the displayed DTC other than U122B? | Go to step 5 . | Replace the A/C CM. Ref. to REMOVAL , Control Unit. |
| 5 CHECK A/C CM. Connect the A/C CM connector. Using the Subaru Select Monitor, read DTC of A/C CM. Ref. to OPERATION , Subaru Select Monitor. | Is DTC other than CAN system displayed? | Perform the diagnosis according to DTC. | Replace the body integrated unit. Ref. to REMOVAL , Body Integrated Unit. |
DIAGNOSTIC PROCEDURE CHART
| Step | Check | Yes | No |
|---|---|---|---|
| 1 CHECK DTC. Using the Subaru Select Monitor, read all DTCs. | Is there DTC other than CAN system? | Perform the diagnosis according to DTCs for other control modules. | Go to step 2 . |
| 2 CHECK DTC. Check DTC indicated in CAN system. | Is U122C a current malfunction? | Go to step 3 . | Go to step 4 . |
| 3 CHECK DTC. Turn the ignition switch to OFF, and read the DTC again. | Is U122C a current malfunction? | Replace SCM. Ref. to REMOVAL , Security Control Module. | Go to step 4 . |
| 4 CHECK SCM. Disconnect the connector from SCM. Using the Subaru Select Monitor, perform the clear memory. Using the Subaru Select Monitor, read DTC of CAN system. | Is the displayed DTC other than U122C? | Go to step 5 . | Replace SCM. Ref. to REMOVAL , Security Control Module. |
| 5 CHECK SCM. Connect the SCM connector. Using the Subaru Select Monitor, read DTC of immobilizer. Ref. to OPERATION , Subaru Select Monitor. | Is DTC other than CAN system displayed? | Perform the diagnosis according to DTC. | Replace the body integrated unit. Ref. to REMOVAL , Body Integrated Unit. |
DIAGNOSTIC PROCEDURE CHART