WIRING DIAGRAM
Refer to appropriate SYSTEM WIRING DIAGRAMS, CAN Communication System .
Scheme 19
Scheme 20
- Prepare the Subaru Select Monitor kit. Refer to «PREPARATION TOOL»(ref-325333-S27123304472009071800000) , General Description .
- Prepare the personal computer which has been installed the Subaru Select Monitor.
- Connect the USB cable between SDI (Subaru Diagnosis Interface) and USB port on the personal computer (dedicated port for the Subaru Select Monitor). NOTE: The dedicated port for the Subaru Select Monitor means the USB port which was used to install the Subaru Select Monitor.
- Connect the diagnosis cable to SDI.
- Connect the SDI to data link connector located in the lower portion of the instrument panel (on the driver's side).
- Start a PC.
- Turn the ignition switch to ON (engine OFF), and run the "PC application for Subaru Select Monitor".
| Step | Check | Yes | No |
|---|---|---|---|
| 1 CHECK DTC . Read the DTC of body integrated unit using Subaru Select Monitor. | Is B1102 current malfunction? | Go to step 2 . | Go to step 5 . |
| 2 CHECK DTC . Turn the ignition switch to OFF. Disconnect the connector from body integrated unit and reconnect. Wait approx. 2 minutes. Read the DTC of body integrated unit using Subaru Select Monitor. | Is B1102 current malfunction? | Go to step 3 . | Go to step 5 . |
| 3 CHECK FUSE . Turn the ignition switch to OFF. Inspect the fuse. | Is the fuse OK? | Go to step 4 . | Replace the defective fuse. |
| 4 CHECK HARNESS . Disconnect the body integrated unit connector (B281). Measure the voltage between body integrated unit connector and chassis ground using tester. Connector & terminal (B281) No. 2 (+) - Chassis ground (-) | Is the voltage 8.5 - 16.5 V? | Replace the body integrated unit. Refer to BODY INTEGRATED UNIT . | Repair or replace the open or shorted circuit between body integrated unit and fuse. |
| 5 CHECK CONNECTOR . Turn the ignition switch to OFF. Disconnect the body integrated unit connector (B280). | Is there poor contact in connector? | Repair or replace the poor contact of connector. | A temporary change of voltage occurred. |
DIAGNOSIS PROCEDURE CHART
| Step | Check | Yes | No |
|---|---|---|---|
| 1 CHECK DTC . Read the DTC of body integrated unit using Subaru Select Monitor. | Is B1104 current malfunction? | Go to step 2 . | Go to step 5 . |
| 2 CHECK DTC . Turn the ignition switch to OFF. Disconnect the connector from body integrated unit and reconnect. Turn the ignition switch to ACC. Wait approx. 2 minutes. Read the DTC of body integrated unit using Subaru Select Monitor. | Is B1104 current malfunction? | Go to step 3 . | Go to step 5 . |
| 3 CHECK FUSE . Turn the ignition switch to OFF. Inspect the fuse. | Is the fuse OK? | Go to step 4 . | Replace the defective fuse. |
| 4 CHECK HARNESS . Disconnect the body integrated unit connector (B279). Measure the voltage between body integrated unit connector and chassis ground using tester. Connector & terminal (B280) No. 7 (+) - Chassis ground (-) | Is the voltage 8.5 - 16.5 V? | Replace the body integrated unit. Refer to BODY INTEGRATED UNIT . | Repair or replace the open or shorted circuit between body integrated unit and fuse. |
| 5 CHECK CONNECTOR . Turn the ignition switch to OFF. Disconnect the body integrated unit connector (B280). | Is there poor contact in connector? | Repair or replace the poor contact of connector. | A temporary change of voltage occurred. |
DIAGNOSIS PROCEDURE CHART
| Step | Check | Yes | No |
|---|---|---|---|
| 1 CHECK DTC . Using the Subaru Select Monitor, read all DTCs. | Are there any U1201, U1202, DTCs other than for the body integrated unit? | Perform the diagnosis according to DTC. | Go to step 2 . |
| 2 CHECK DTC . Read the DTC of body integrated unit using Subaru Select Monitor. | Is U1211 a current malfunction? | Go to step 3 . | Go to step 4 . |
| 3 CHECK ECM . Turn the ignition switch to OFF. Disconnect the connector from ECM. Connect the disconnected connectors. Read the DTC of body integrated unit using Subaru Select Monitor. | Is U1211 a current malfunction? | Replace the ECM. Refer to ENGINE CONTROL MODULE (ECM) . | Go to step 4 . |
| 4 CHECK HARNESS . Shake the harness used for CAN communication circuit. Read the DTC of body integrated unit using Subaru Select Monitor. | Is U1211 a current malfunction? | Repair the poor contact or temporary open circuit of harness. | Go to step 5 . |
| 5 CHECK CONNECTOR . Turn the ignition switch to OFF. Disconnect the connector that is connected to high speed CAN circuit. | Is there poor contact in connector? | Repair the connector terminal where poor contact exists, or replace harness. | It is possible that temporary poor contact occurs. |
DIAGNOSIS PROCEDURE CHART
| Step | Check | Yes | No |
|---|---|---|---|
| 1 CHECK DTC . Using the Subaru Select Monitor, read all DTCs. | Are there any U1201, U1202, DTCs other than for the body integrated unit? | Perform the diagnosis according to DTC. | Go to step 2 . |
| 2 CHECK DTC . Read the DTC of body integrated unit using Subaru Select Monitor. | Is U1212 a current malfunction? | Go to step 3 . | Go to step 4 . |
| 3 CHECK DTC . Turn the ignition switch to OFF. Disconnect the connector from TCM. Connect the disconnected connectors. Read the DTC of body integrated unit using Subaru Select Monitor. | Is U1212 a current malfunction? | Replace the TCM. Refer to TRANSMISSION CONTROL MODULE (TCM) . | Go to step 4 . |
| 4 CHECK HARNESS . Turn the ignition switch to OFF. Shake the harness used for CAN communication circuit. Read the DTC of body integrated unit using Subaru Select Monitor. | Is U1212 a current malfunction? | Repair or replace the harness. | Go to step 5 . |
| 5 CHECK CONNECTOR . Turn the ignition switch to OFF. Disconnect the connector that is connected to high speed CAN circuit. | Is there poor contact in connector terminal? | Repair the connector terminal, or replace harness. | Temporary poor contact occurs. |
DIAGNOSIS PROCEDURE CHART
| Step | Check | Yes | No |
|---|---|---|---|
| 1 CHECK DTC . Using the Subaru Select Monitor, read all DTCs. | Are there any U1201, U1202, DTCs other than for the body integrated unit? | Perform the diagnosis according to DTC. | Go to step 2 . |
| 2 CHECK DTC . Read the DTC of body integrated unit using Subaru Select Monitor. | Is U1213 a current malfunction? | Go to step 3 . | Go to step 4 . |
| 3 CHECK DTC . Turn the ignition switch to OFF. Disconnect the VDC/ABS CM connector. Connect the disconnected connectors. Read the DTC of body integrated unit using Subaru Select Monitor. | Is U1213 a current malfunction? | Replace the VDC/ABS CM. Refer to VDC CONTROL MODULE AND HYDRAULIC CONTROL UNIT (VDCCM & H/U) . | Go to step 4 . |
| 4 CHECK HARNESS . Turn the ignition switch to OFF. Shake the harness used for CAN communication circuit. Read the DTC of body integrated unit using Subaru Select Monitor. | Is U1213 a current malfunction? | Repair or replace the harness. | Go to step 5 . |
| 5 CHECK CONNECTOR . Turn the ignition switch to OFF. Disconnect the connector that is connected to high speed CAN circuit. | Is there poor contact in connector terminal? | Repair the connector terminal, or replace harness. | It is possible that temporary poor contact occurs. |
DIAGNOSIS PROCEDURE CHART
| Step | Check | Yes | No |
|---|---|---|---|
| 1 CHECK DTC . Using the Subaru Select Monitor, read all DTCs. | Are there any U1201, U1202, DTCs other than for the body integrated unit? | Perform the diagnosis according to DTC. | Go to step 2 . |
| 2 CHECK DTC . Read the DTC of body integrated unit using Subaru Select Monitor. | Is U1221 a current malfunction? | Go to step 3 . | Go to step 8 . |
| 3 CHECK DTC . Turn the ignition switch to OFF. Disconnect all connectors (B280, B310, B55, B136, B230, B231) that are connected to high speed CAN communication line. Connect the disconnected connectors. Read the DTC of body integrated unit using Subaru Select Monitor. | Is U1221 a current malfunction? | Go to step 4 . | Go to step 8 . |
| 4 CHECK CURRENT DATA . Turn the ignition switch to OFF. Disconnect all connectors (B280, B310, B55, B136, B230, B231) that are connected to high speed CAN communication line. Using the tester, measure the resistance between terminals of harness. Connector & terminal (B40) No. 6 - (B136) No. 27: (B40) No. 6 - (B310) No. 35: (B40) No. 6 - (B230) No. 2: (B40) No. 6 - (B231) No. 2: (B40) No. 6 - (B55) No. 18: (B40) No. 6 - (B280) No. 3 | Is the resistance less than 10 ohms? | Go to step 5 . | Repair or replace the open circuit of the harness. |
| 5 CHECK HARNESS . Using the tester, measure the resistance between terminals of harness. Connector & terminal (B40) No. 14 - (B136) No. 35: (B40) No. 14 - (B310) No. 10: (B40) No. 14 - (B230) No. 3: (B40) No. 14 - (B231) No. 1: (B40) No. 14 - (B55) No. 17: (B40) No. 14 - (B280) No. 9 | Is the resistance less than 10 ohms? | Go to step 6 . | Repair or replace the open circuit of the harness. |
| 6 CHECK DTC . Turn the ignition switch to OFF. Connect the disconnected connectors. Start the engine. Read the DTC of body integrated unit using Subaru Select Monitor. | Is U1221 a current malfunction? | Go to step 7 . | Go to step 8 . |
| 7 CHECK DTC . Using the Subaru Select Monitor, read all DTCs. | Are DTCs P1718 or P0044, P0045, P0140 detected? | Replace the ECM. | Replace the body integrated unit. |
| 8 CHECK HARNESS . Turn the ignition switch to OFF. Shake the harness used for CAN communication circuit. Read the DTC of body integrated unit using Subaru Select Monitor. | Is U1221 a current malfunction? | Repair or replace the harness. | Go to step 9 . |
| 9 CHECK CONNECTOR . Turn the ignition switch to OFF. Disconnect all the connector that is connected to high speed CAN circuit. | Is there poor contact in connector terminal? | Repair the connector terminal where poor contact exists, or replace harness. | Temporary poor contact occurs. |
DIAGNOSIS PROCEDURE CHART
| Step | Check | Yes | No |
|---|---|---|---|
| 1 CHECK DTC . Using the Subaru Select Monitor, read all DTCs. | Are there any U1201, U1202, DTCs other than for the body integrated unit? | Perform the diagnosis according to DTC. | Go to step 2 . |
| 2 CHECK DTC . Read the DTC of body integrated unit using Subaru Select Monitor. | Is U1222 a current malfunction? | Go to step 3 . | Go to step 7 . |
| 3 CHECK DTC . Turn the ignition switch to OFF. Disconnect all connectors (B280, B310, B55, B136, B230, B231) that are connected to high speed CAN communication line. Connect the disconnected connectors. Read the DTC of body integrated unit using Subaru Select Monitor. | Is U1222 a current malfunction? | Go to step 4 . | Go to step 7 . |
| 4 CHECK HARNESS . Disconnect all connectors (B280, B310, B55, B136, B230, B231) that are connected to high speed CAN communication line. Using the tester, measure the resistance between terminals of harness. Connector & terminal (B55) No. 17 - (B40) No. 14: (B55) No. 18 - (B40) No. 6 | Is the resistance less than 10 ohms? | Go to step 5 . | Repair or replace the harness. |
| 5 CHECK DTC . Connect the disconnected connectors. Start the engine. Read the DTC of body integrated unit using Subaru Select Monitor. | Is U1222 a current malfunction? | Go to step 6 . | Go to step 7 . |
| 6 CHECK DTC . Using the Subaru Select Monitor, read all DTCs. | Are DTCs P0600 or P0044, P0045, C0140 displayed? | Replace the TCM. Refer to TRANSMISSION CONTROL MODULE (TCM) . | Replace the body integrated unit. Refer to REMOVAL , Body Integrated Unit . |
| 7 CHECK HARNESS . Shake the harness used for CAN communication circuit. Read the DTC of body integrated unit using Subaru Select Monitor. | Is U1222 a current malfunction? | Repair or replace the harness. | Go to step 8 . |
| 8 CHECK CONNECTOR . Turn the ignition switch to OFF. Disconnect all the connector that is connected to high speed CAN circuit. | Is there poor contact in connector terminal? | Repair the connector terminal where poor contact exists, or replace harness. | Temporary poor contact occurs. |
DIAGNOSIS PROCEDURE CHART
| Step | Check | Yes | No |
|---|---|---|---|
| 1 CHECK DTC . Using the Subaru Select Monitor, read all DTCs. | Are there any U1201, U1202, DTCs other than for the body integrated unit? | Perform the diagnosis according to DTC. | Go to step 2 . |
| 2 CHECK DTC . Read the DTC of body integrated unit using Subaru Select Monitor. | Is U1223 a current malfunction? | Go to step 3 . | Go to step 7 . |
| 3 CHECK DTC . Turn the ignition switch to OFF. Disconnect all connectors (B280, B310, B55, B136, B230, B231) that are connected to high speed CAN communication line. Connect the disconnected connectors. Read the DTC of body integrated unit using Subaru Select Monitor. | Is U1223 a current malfunction? | Go to step 4 . | Go to step 7 . |
| 4 CHECK HARNESS . Disconnect all connectors (B280, B310, B55, B136, B230, B231) that are connected to high speed CAN communication line. Using the tester, measure the resistance between terminals of harness. Connector & terminal (B40) No. 6 - (B310) No. 35: (B40) No. 14 - (B310) No. 10 | Is the resistance less than 10 ohms? | Go to step 5 . | Repair or replace the harness. |
| 5 CHECK DTC . Connect the disconnected connectors. Start the engine. Read the DTC of body integrated unit using Subaru Select Monitor. | 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 or P0600 displayed? | Replace the VDC/ABS CM. Refer to VDC CONTROL MODULE AND HYDRAULIC CONTROL UNIT (VDCCM & H/U) . | Replace the body integrated unit. Refer to REMOVAL , Body Integrated Unit . |
| 7 CHECK HARNESS . Shake the harness used for CAN communication circuit. Read the DTC of body integrated unit using Subaru Select Monitor. | Is U1223 a current malfunction? | Repair or replace the harness. | Go to step 8 . |
| 8 CHECK CONNECTOR . Turn the ignition switch to OFF. Disconnect all connectors (B280, B310, B55, B136, B230, B231) that are connected to high speed CAN communication line. | Is there connector terminal where poor contact exists? | Repair the connector terminal where poor contact exists, or replace harness. | Temporary poor contact occurs. |
DIAGNOSIS PROCEDURE CHART
| Step | Check | Yes | No |
|---|---|---|---|
| 1 CHECK DTC . Read the DTC of body integrated unit using Subaru Select Monitor. | Are there DTC U1300 or U1301? | Perform the diagnosis according to DTC. | Go to step 2 . |
| 2 CHECK DTC . Read the DTC of body integrated unit using Subaru Select Monitor. | Is U1301 a current malfunction? | Go to step 3 . | Go to step 9 . |
| 3 CHECK DTC . Turn the ignition switch to OFF, and read the DTC again. Turn the ignition switch to OFF. Disconnect all connectors (i84, MO, i88, i85 or i50) that are connected to low speed CAN communication line. Connect the disconnected connectors. Read the DTC of body integrated unit using Subaru Select Monitor. | Is U1301 a current malfunction? | Go to step 4 . | Go to step 9 . |
| 4 CHECK HARNESS . Turn the ignition switch to OFF. Disconnect all connectors (i84, i10, i88, i85 or i50) that are connected to low speed CAN communication line. Using the tester, measure the resistance between terminals of harness. Connector & terminal (i84) No. 1 - (i10) No. 27 (combination meter): (i84) No. 9 - (i10) No. 26 (combination meter): (i84) No. 1 - (i88) No. 20 (auto A/C): (i84) No. 9 - (i88) No. 19 (auto A/C): (i84) No. 1 - (i85) No. 12 (audio): (i84) No. 9 - (i85) No. 11 (audio): (i84) No. 1 - (i50) No. 18 (navigation): (i84) No. 9 - (i50) No. 6 (navigation) | Is the resistance less than 10 ohms? | Go to step 5 . | Repair or replace the harness. |
| 5 CHECK AUDIO OR NAVIGATION . Connect the disconnected connectors. Disconnect the connector of navigation (i85) or audio (i50). Read the DTC of body integrated unit using Subaru Select Monitor. | Is U1301 a current malfunction? | Go to step 6 . | Go to step 9 . |
| 6 CHECK AUTO A/C CONTROL MODULE . Turn the ignition switch to OFF. Connect the audio or navigation module. Disconnect the auto A/C control module connector (i88). Read the DTC of body integrated unit using Subaru Select Monitor. | Is U1301 a current malfunction? | Go to step 7 . | Replace the auto A/C control module. Refer to REMOVAL , Control Unit (Auto A/C Model) . |
| 7 CHECK COMBINATION METER . Turn the ignition switch to OFF. Connect the disconnected connectors. Perform the self-diagnosis of combination meter. | Is the self-diagnosis of combination meter OK? | Go to step 8 . | Replace the combination meter. |
| 8 CHECK BODY INTEGRATED UNIT . Turn the ignition switch to OFF. Disconnect all connectors (i84, i10, i88, i85 or i50) that are connected to low speed CAN communication line. Connect the disconnected connectors. Read the DTC of body integrated unit using Subaru Select Monitor. | Is DTC U1301 a current malfunction? | Replace the body integrated unit. | Go to step 9 . |
| 9 CHECK HARNESS . Turn the ignition switch to OFF. Shake the harness used for low speed CAN communication circuit. Read the DTC of body integrated unit using Subaru Select Monitor. | Is U1301 a current malfunction? | Repair or replace the harness. | Go to step 10 . |
| 10 CHECK CONNECTOR . Check current data (meter failure) of the body integrated unit. Turn the ignition switch to OFF. Disconnect all connectors (i84, i10, i88, i85 or i50) that are connected to low speed CAN communication line. | Is there poor contact in connector terminal? | Repair the connector terminal, or replace harness. | Temporary poor contact occurs. |
DIAGNOSIS PROCEDURE CHART
| Step | Check | Yes | No |
|---|---|---|---|
| 1 CHECK DTC . Read the DTC of body integrated unit using Subaru Select Monitor. | Is U1302 a current malfunction? | Go to step 2 . | Go to step 8 . |
| 2 CHECK DTC . Turn the ignition switch to OFF, and read the DTC again. Turn the ignition switch to OFF. Disconnect all connectors (i84, i10, i88, i85 or i50) that are connected to low speed CAN communication line. Connect the disconnected connectors. Read the DTC of body integrated unit using Subaru Select Monitor. | Is U1302 a current malfunction? | Go to step 3 . | Go to step 8 . |
| 3 CHECK HARNESS . Disconnect all connectors (i84, i10, i88, i85 or i50) that are connected to low speed CAN communication line. Using the tester, measure the resistance between terminals of harness. Connector & terminal (i84) No. 1 - (i10) No. 27 (combination meter): (i84) No. 9 - (i10) No. 26 (combination meter): (i84) No. 1 - (i88) No. 20 (auto A/C): (i84) No. 9 - (i88) No. 19 (auto A/C): (i84) No. 1 - (i85) No. 12 (audio): (i84) No. 9 - (i85) No. 11 (audio): (i84) No. 1 - (i50) No. 18 (navigation): (i84) No. 9 - (i50) No. 6 (navigation) | Is the resistance less than 10 ohms? | Go to step 4 . | Repair or replace the harness. |
| 4 CHECK HARNESS . Turn the ignition switch to OFF. Connect the disconnected connectors. Using the tester, measure the resistance between harness connector and chassis ground. Connector & terminal (i84) No. 1 - Chassis ground: (i84) No. 9 - Chassis ground | Is the resistance 1 Mohms or more? | Go to step 5 . | Go to step 7 . |
| 5 CHECK HARNESS . Turn the ignition switch to ON. Using the tester, measure the voltage between harness connector and chassis ground. Connector & terminal (i84) No. 1 - Chassis ground: (i84) No. 9 - Chassis ground | Is the voltage less than 6 V? | Replace the body integrated unit. | Go to step 6 . |
| 6 CHECK HARNESS . With the tester connected, disconnect control module. | Is there any control module that the voltage becomes 6 V or less. | Replace the control module whose voltage has changed. | Repair or replace the short circuit of the harness. |
| 7 CHECK HARNESS . With the tester connected, disconnect control module. | Is there any control module whose resistance has changed? | Replace the control module whose resistance has changed. | Repair or replace the short circuit of the harness. |
| 8 CHECK HARNESS . Shake the harness used for low speed CAN communication circuit. Read the DTC of body integrated unit using Subaru Select Monitor. | Is U1302 a current malfunction? | Repair or replace the open, short circuit of the harness. | Go to step 9 . |
| 9 CHECK CONNECTOR . Turn the ignition switch to OFF. Disconnect all connectors (i84, MO, i88, i85 or i50) that are connected to low speed CAN communication line. | Is there poor contact in connector terminal? | Repair the connector terminal, or replace harness. | Temporary poor contact occurs. |
DIAGNOSIS PROCEDURE CHART
| Step | Check | Yes | No |
|---|---|---|---|
| 1 CHECK ALL DTCS . Using the Subaru Select Monitor, read all DTCs. | Is DTC U1301 or U1302 displayed? | Perform the diagnosis according to DTC. | Go to step 2 . |
| 2 CHECK DTC . Read the DTC of body integrated unit using Subaru Select Monitor. | Is U1321 a current malfunction? | Go to step 3 . | Go to step 7 . |
| 3 CHECK DTC . Turn the ignition switch to OFF. Disconnect all connectors (i84, MO, i88, i85 or i50) that are connected to low speed CAN communication line. Connect the disconnected connectors. Read the DTC of body integrated unit using Subaru Select Monitor. | Is U1321 a current malfunction? | Go to step 4 . | Replace the combination meter. Refer to REMOVAL , Combination Meter . |
| 4 CHECK HARNESS . Turn the ignition switch to OFF. Disconnect all connectors (i84, MO, i88, i85 or i50) that are connected to low speed CAN communication line. Using the tester, measure the resistance between terminals of harness. Connector & terminal (i84) No. 1 - (i10) No. 27 (combination meter): (i84) No. 9 - (i10) No. 26 (combination meter): (i84) No. 1 - (i88) No. 20 (auto A/C): (i84) No. 9 - (i88) No. 19 (auto A/C): (i84) No. 1 - (i85) No. 12 (audio): (i84) No. 9 - (i85) No. 11 (audio): (i84) No. 1 - (i50) No. 18 (navigation): (i84) No. 9 - (i50) No. 6 (navigation) | Is the resistance less than 10 ohms? | Go to step 5 . | Repair or replace the harness. |
| 5 CHECK COMBINATION METER . Connect the disconnected connectors. Perform the self-diagnosis of combination meter. | Is the self-diagnosis OK? | Go to step 6 . | Replace the combination meter. |
| 6 CHECK DTC . Turn the ignition switch to OFF. Disconnect all connectors (i84, i10, i88, i85 or i50) that are connected to low speed CAN communication line. Connect the disconnected connectors. Read the DTC of body integrated unit using Subaru Select Monitor. | Is U1321 a current malfunction? | Replace the body integrated unit. Refer to BODY INTEGRATED UNIT . | Go to step 7 . |
| 7 CHECK DTC . Shake the harness used for low speed CAN communication circuit. Read the DTC of body integrated unit using Subaru Select Monitor. | Is U1321 a current malfunction? | Repair the poor contact, open circuit of harness or replace harness. | Go to step 8 . |
| 8 CHECK CONNECTOR . Turn the ignition switch to OFF. Disconnect all connectors (i84, i10, i88, i85 or i50) that are connected to low speed CAN communication line. | Is there poor contact in connector terminal? | Repair the connector terminal, or replace harness. | It is possible that temporary poor contact occurs. |
DIAGNOSIS PROCEDURE CHART