WIRING DIAGRAM
See appropriate SYSTEM WIRING DIAGRAM article.
CAN communication system. See appropriate SYSTEM WIRING DIAGRAM article.
Scheme 17
| Step | Check | Yes | No |
|---|---|---|---|
| 1 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. Refer to GROUND SHORT INSPECTION (BUS "A" (MAIN-CAN)) . | Go to step 2 . |
| 2 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 3 . | Check for battery short. Refer to BATTERY SHORT INSPECTION (BUS "A" (MAIN-CAN)) . |
| 3 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 55 ohms or less? | Perform the inspection for the resistance of 55 ohms or less. Refer to 55 ohms OR LESS . | Go to step 4 . |
| 4 CHECK FROM DATA LINK CONNECTOR. Using the tester, measure the resistance between terminals. Connector & terminal (B40) No. 6 - No. 14 | Is the resistance 65 ohms or more? | Perform the inspection for the resistance of 65 ohms or more. Refer to 65 ohms OR MORE . | A related line may be open. Perform the inspection for 56 - 64 ohms relevant to the detected DTC. Refer to LIST . |
CAN communication system. See appropriate SYSTEM WIRING DIAGRAM article.
Scheme 18
| Step | Check | Yes | No |
|---|---|---|---|
| 1 CHECK FROM BODY INTEGRATED UNIT CONNECTOR. Disconnect the body integrated unit connector. Using the tester, measure the resistance between terminals. Connector & terminal (B280) No. 11 - Chassis ground: (B280) No. 21 - Chassis ground | Is the resistance 10 ohms or less? | Check for ground short. Refer to GROUND SHORT INSPECTION (BUS "B" (SMART SYSTEM CAN)) . | Go to step 2 . |
| 2 CHECK FROM BODY INTEGRATED UNIT CONNECTOR. Turn the ignition switch to ON. Using the tester, measure the voltage between terminals. Connector & terminal (B280) No. 11 - Chassis ground: (B280) No. 21 - Chassis ground | Is the voltage 5 V or less? | Go to step 3 . | Check for battery short. Refer to BATTERY SHORT INSPECTION (BUS "B" (SMART SYSTEM CAN)) . |
| 3 CHECK FROM BODY INTEGRATED UNIT CONNECTOR. Turn the ignition switch to OFF. Using the tester, measure the resistance between terminals. Connector & terminal (B280) No. 11 - No. 21 | Is the resistance 56 ohms or less? | Perform the inspection for the resistance of 56 ohms or less. Refer to 56 ohms OR LESS . | Go to step 4 . |
| 4 CHECK FROM BODY INTEGRATED UNIT CONNECTOR. Using the tester, measure the resistance between terminals. Connector & terminal (B280) No. 11 - No. 21 | Is the resistance 64 ohms or more? | Perform the inspection for the resistance of 64 ohms or more. Refer to 64 ohms OR MORE . | A related line may be open. Perform the inspection for 57 - 63 ohms relevant to the detected DTC. Refer to LIST . |
CAN communication system. See appropriate SYSTEM WIRING DIAGRAM article.
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 VDC CM. |
| 3 CHECK BETWEEN MAIN WIRING HARNESSES. Using the tester, measure the resistance between terminals. Connector & terminal (i84) No. 27 - Chassis ground: (i84) No. 35 - Chassis ground | Is the resistance 10 ohms or less? | Repair or replace the short circuit of the main wiring harness and related lines between body integrated unit and ECM. | Replace the body integrated unit. Refer to REMOVAL . |
| NOTE |
|---|
| Disconnect the body integrated unit at the end. |
CAN communication system. See appropriate SYSTEM WIRING DIAGRAM article.
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 returned to 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 main wiring harness and related lines between body integrated unit and VDC CM. |
| 3 CHECK BETWEEN MAIN WIRING HARNESSES. Using the tester, measure the voltage between terminals. Connector & terminal (i84) No. 27 (+) - Chassis ground (-): (i84) No. 35 (+) - Chassis ground (-) | Is the voltage 1 V or less? | Replace the body integrated unit. Refer to REMOVAL . | Repair or replace the short circuit of the main wiring harness and related lines between body integrated unit and ECM. |
| NOTE |
|---|
| Disconnect the body integrated unit at the end. |
CAN communication system. See appropriate SYSTEM WIRING DIAGRAM article.
Note. When the measured resistance value is 56 - 64 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 main wiring harness and related lines between body integrated unit and VDC CM. |
| 3 CHECK MAIN WIRING HARNESS AND RELATED LINES. Using the tester, measure the resistance between terminals. Connector & terminal (i84) No. 27 - Chassis ground: (i84) No. 35 - Chassis ground | Is the resistance 10 ohms or less? | Repair or replace the short circuit of the main wiring harness and related lines between body integrated unit and ECM. | Replace the body integrated unit. Refer to REMOVAL . |
| 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. (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 voltage changed at disconnecting the body integrated unit, Go to step 6 . | Repair or replace the short circuit of the main wiring harness and related lines between body integrated unit and VDC CM. |
| 6 CHECK HARNESS. Using a tester, measure the voltage between terminals and chassis ground. Connector & terminal (i84) No. 27 (+) - Chassis ground (-): (i84) No. 35 (+) - Chassis ground (-) | Is the voltage 5 V or less? | Replace the body integrated unit. Refer to REMOVAL . | Repair or replace the short circuit of the main wiring harness and related lines between body integrated unit and ECM. |
| NOTE |
|---|
| Disconnect the body integrated unit at the end. |
CAN communication system. See appropriate SYSTEM WIRING DIAGRAM article.
Note. When the bus line is measured, combined resistance of end resistance (120 ohms) in ECM and end resistance (120 ohms) in VDC CM can be measured. The combined resistance is approximately 56 - 64 ohms. When the measured resistance value is 55 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 main wiring harness and related lines between body integrated unit and VDC CM. |
| 3 CHECK BETWEEN MAIN WIRING HARNESSES. Using the tester, measure the resistance between terminals. Connector & terminal (i84) No. 27 - No. 35 | Is the resistance 10 ohms or less? | Repair or replace the short circuit of the main wiring harness and related lines between body integrated unit and ECM. | Replace the body integrated unit. Refer to REMOVAL . |
| 4 CHECK CONTROL MODULE. Disconnect ECM and VDC CM connectors. Using a tester, measure the resistance between control module terminals. Connector & terminal (B137) No. 19 - No. 18 (2.5 L model): (B136) No. 17 - No. 28 (3.6 L model): (B310) No. 8 - No. 10 | Is the resistance 115 - 135 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 (i84) No. 27 - (B281) No. 28: (i84) No. 35 - (B281) No. 20 | Is the resistance 2, 850 - 3, 150 ohms? | Go to step 6 . | Replace the body integrated unit. Refer to REMOVAL . |
| 6 CHECK CONTROL MODULE. Using a tester, measure the resistance between control module terminals. Connector & terminal (i84) No. 35 - (B281) No. 28: (i84) No. 27 - (B281) No. 20 | Is the resistance less than 1 ohms? | Go to step 7 . | Replace the body integrated unit. Refer to REMOVAL . |
| 7 CHECK CONTROL MODULE. Disconnect the connector of combination meter. Using the tester, measure the resistance between terminals. Connector & terminal (i10) No. 33 - No. 32 | Is the resistance 2, 850 - 3, 150 ohms? | Go to step 8 . | Replace the combination meter. |
| 8 CHECK CONTROL MODULE. Disconnect the security CM connector. Using a tester, measure the resistance between control module terminals. Connector & terminal (B40) No. 6 - No. 14 | Is the resistance 1, 425 - 1, 575 ohms? | Go to step 9 . | Replace the security CM. |
| 9 CHECK HARNESS. Using the tester, measure the resistance between terminals. Connector & terminal (B281) No. 28 - No. 20 | Is the resistance 1 Mohms or more? | Go to step 11 . | Go to step 10 . |
| 10 CHECK HARNESS. With a tester connected, disconnect control modules in order. NOTE: Disconnect the body integrated unit at the end. 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 due to resistance component. |
| 11 CHECK CONTROL MODULE. With a tester connected, disconnect control modules in order. NOTE: Disconnect the body integrated unit at the end. 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 due to resistance component. |
| NOTE |
|---|
| Disconnect the body integrated unit at the end. |
| NOTE |
|---|
| Disconnect the body integrated unit at the end. |
| NOTE |
|---|
| Disconnect the body integrated unit at the end. |
CAN communication system. See appropriate SYSTEM WIRING DIAGRAM article.
Note. When CAN communication circuit is measured, combined resistance of end resistance (120 ohms) in ECM and end resistance (120 ohms) in VDC CM can be measured. The combined resistance is approximately 56 - 64 ohms. When the measured resistance value is 65 ohms or more, either of end resistance or main wiring harness may have malfunction such as open circuit.
| Step | Check | Yes | No |
|---|---|---|---|
| 1 CHECK CONTROL MODULE. Disconnect ECM and VDC CM connectors. Using a tester, measure the resistance between control module terminals. Connector & terminal (B137) No. 18 - No. 19 (2.5 L model): (B136) No. 17 - No. 28 (3.6 L model): (B310) No. 8 - No. 10 | Is the resistance 115 - 135 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. Refer to REMOVAL . |
| 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. Refer to REMOVAL . |
| 4 CHECK CONTROL MODULE. Disconnect the connector of combination meter. Using the tester, measure the resistance between terminals. Connector & terminal (i10) No. 33 - No. 32 | Is the resistance 2, 850 - 3, 150 ohms? | Go to step 5 . | Replace the combination meter. |
| 5 CHECK CONTROL MODULE. Disconnect the security CM connector. Using a tester, measure the resistance between control module terminals. Connector & terminal (B40) No. 6 - No. 14 | Is the resistance 1, 425 - 1, 575 ohms? | Go to step 6 . | Replace the security CM. |
| 6 CHECK HARNESS. Using a tester, check continuity between terminals. Connector & terminal (B40) No. 6 - (B310) No. 10: (B40) No. 14 - (B310) No. 8: (B40) No. 6 - (i281) No. 20: (B40) No. 14 - (i281) No. 28 | Is there continuity? | Go to step 7 . | Repair or replace the open circuit of harness. |
| 7 CHECK HARNESS. Disconnect the ECM connector. Using a tester, check continuity between terminals. Connector & terminal 2.5 L model (B40) No. 6 - (B137) No. 19: (B40) No. 14 - (B137) No. 18: 3.6 L model (B40) No. 6 - (B136) No. 17: (B40) No. 14 - (B136) No. 28 | Is there continuity? | It is possible that temporary poor communication occurs. | Repair or replace the open circuit of harness. |
CAN communication system. See appropriate SYSTEM WIRING DIAGRAM article.
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 CVT model (B55) No. 17 - No. 18: 5AT model (B54) No. 20 - No. 21 | 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 CVT model (B55) No. 17 - (B40) No. 14: (B55) No. 18 - (B40) No. 6: 5AT model (B54) No. 20 - (B40) No. 14: (B54) No. 21 - (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. Refer to OPERATION . |
CAN communication system. See appropriate SYSTEM WIRING DIAGRAM article.
| 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 CM. Refer to OPERATION . |
CAN communication system. See appropriate SYSTEM WIRING DIAGRAM article.
| Step | Check | Yes | No |
|---|---|---|---|
| 1 CHECK BETWEEN RELATED LINES AND MAIN WIRING HARNESS. Disconnect the A/C CM connector. Using the tester, measure the resistance between terminals. Connector & terminal (i80) No. 4 - No. 5 | Is the resistance 400 ohms or more? | Related lines between A/C CM 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 (i80) No. 4 - (B40) No. 6: (i80) No. 5 - (B40) No. 14 | Is the resistance 10 ohms or more? | Repair or replace the open circuit of A/C CM related lines. | Check DTC of A/C CM. Refer to OPERATION . |
CAN communication system. See appropriate SYSTEM WIRING DIAGRAM article.
| Step | Check | Yes | No |
|---|---|---|---|
| 1 CHECK BETWEEN RELATED LINES AND MAIN WIRING HARNESS. Disconnect the electronic parking CM connector. Using the tester, measure the resistance between terminals. Connector & terminal (R355) No. 3 - No. 9 | Is the resistance 400 ohms or more? | Related lines between electronic parking CM 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 (R355) No. 9 - (B40) No. 6: (R355) No. 3 - (B40) No. 14 | Is the resistance 10 ohms or more? | Repair or replace the open circuit portion of electronic parking CM related lines. | Check DTC of electronic parking CM. Refer to OPERATION . |
CAN communication system. See appropriate SYSTEM WIRING DIAGRAM article.
| 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. |
CAN communication system. See appropriate SYSTEM WIRING DIAGRAM article.
| Step | Check | Yes | No |
|---|---|---|---|
| 1 CHECK BETWEEN RELATED LINES AND MAIN WIRING HARNESS. Disconnect the security CM connector. Using the tester, measure the resistance between terminals. Connector & terminal (B518) No. 7 - No. 4 | Is the resistance 400 ohms or more? | Related lines between security CM 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 (B518) No. 4 - (B40) No. 6: (B518) No. 7 - (B40) No. 14 | Is the resistance 10 ohms or more? | Repair or replace the open circuit portion of security CM related lines. | Check DTC of immobilizer system. Refer to OPERATION . |
CAN communication system. See appropriate SYSTEM WIRING DIAGRAM article.
| Step | Check | Yes | No |
|---|---|---|---|
| 1 CHECK BETWEEN RELATED LINES AND MAIN WIRING HARNESS. Disconnect the stereo camera CM 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 CM 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 CM related lines. | Check DTC of stereo camera. Refer to OPERATION . |
CAN communication system. See appropriate SYSTEM WIRING DIAGRAM article.
| Step | Check | Yes | No |
|---|---|---|---|
| 1 CHECK BETWEEN RELATED LINES AND MAIN WIRING HARNESS. Disconnect the A/B CM connector. Using the tester, measure the resistance between terminals. Connector & terminal (AB6) No. 13 - No. 22 | Is the resistance 400 ohms or more? | Related lines between A/B CM 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 (AB6) No. 13 - (B40) No. 6: (AB6) No. 22 - (B40) No. 14 | Is the resistance 10 ohms or more? | Repair or replace the open circuit of A/B CM related lines. | Check DTC of A/B CM. |
CAN communication system. See appropriate SYSTEM WIRING DIAGRAM article.
| Step | Check | Yes | No |
|---|---|---|---|
| 1 CHECK BETWEEN RELATED LINES AND MAIN WIRING HARNESS. Disconnect the remote engine start CM connector. Using the tester, measure the resistance between terminals. Connector & terminal (B180) No. 1 - No. 2 | Is the resistance 400 ohms or more? | Related lines between remote engine start CM 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 (B40) No. 6 - (B180) No. 1: (B40) No. 14 - (B180) No. 2 | Is the resistance 10 ohms or more? | Repair or replace the open circuit portion of remote engine start CM related lines. | Check that the remote engine start function operates normally. |
CAN communication system. See appropriate SYSTEM WIRING DIAGRAM article.
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 MAIN WIRING HARNESSES. Using the tester, measure the resistance between terminals. Connector & terminal (B280) No. 11 - Chassis ground: (B280) No. 21 - 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. Connector & terminal (B280) No. 11 - Chassis ground: (B280) No. 21 - Chassis ground | Did the resistance change to 10 ohms or more? | Replace the control module whose resistance has changed. | Repair or replace the short circuit of the main wiring harness and related lines between body integrated unit and keyless access CM. |
CAN communication system. See appropriate SYSTEM WIRING DIAGRAM article.
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 MAIN WIRING HARNESSES. Turn the ignition switch to ON. Using the tester, measure the voltage between terminals. Connector & terminal (B280) No. 11 (+) - Chassis ground (-): (B280) No. 21 (+) - Chassis ground (-) | Is the voltage 5 V or less? | Currently returned to normal. | Go to step 2 . |
| 2 CHECK CONTROL MODULE. With the tester connected, disconnect control module. Connector & terminal (B280) No. 11 (+) - Chassis ground (-): (B280) No. 21 (+) - Chassis ground (-) | Did the voltage change to 5 V or less? | Replace the control module whose voltage has changed. | Repair or replace the short circuit of the main wiring harness and related lines between body integrated unit and keyless access CM. |
CAN communication system. See appropriate SYSTEM WIRING DIAGRAM article.
Note. When the measured resistance value is 57 - 63 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 MAIN WIRING HARNESSES. Using the tester, measure the resistance between terminals. Connector & terminal (B280) No. 11 - Chassis ground: (B280) No. 21 - Chassis ground | Is the resistance 10 ohms or less? | Go to step 2 . | Go to step 3 . |
| 2 CHECK CONTROL MODULE. With the tester connected, disconnect control module. NOTE: Disconnect the body integrated unit at the end. Connector & terminal (B280) No. 11 - Chassis ground: (B280) No. 21 - Chassis ground | Did the resistance change to 10 ohms or more? | Replace the control module whose resistance has changed. | Repair or replace the short circuit of the main wiring harness and related lines between body integrated unit and keyless access CM. |
| 3 CHECK BETWEEN MAIN WIRING HARNESSES. Turn the ignition switch to ON. Using the tester, measure the voltage between terminals. Connector & terminal (B280) No. 11 (+) - Chassis ground (-): (B280) No. 21 (+) - Chassis ground (-) | Is the voltage 5 V or less? | CAN communication circuit is normal. | Go to step 4 . |
| 4 CHECK CONTROL MODULE. With the tester connected, disconnect control module. (Disconnect the body integrated unit at the end.) Connector & terminal (B280) No. 11 (+) - Chassis ground (-): (B280) No. 21 (+) - Chassis ground (-) | Did the voltage change to 5 V or less? | Replace the control module whose voltage has changed. | Repair or replace the short circuit of the main wiring harness and related lines between body integrated unit and keyless access CM. |
| NOTE |
|---|
| Disconnect the body integrated unit at the end. |
CAN communication system. See appropriate SYSTEM WIRING DIAGRAM article.
Note. When the bus line is measured, combined resistance of end resistance (120 ohms) in body integrated unit and end resistance (120 ohms) in keyless access CM can be measured. The combined resistance is approximately 57 - 63 ohms. When the measured resistance value is 56 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 MAIN WIRING HARNESSES. Using the tester, measure the resistance between terminals. Connector & terminal (B280) No. 11 - No. 21 | Is the resistance 10 ohms or less? | Go to step 2 . | Go to step 3 . |
| 2 CHECK MAIN WIRING HARNESS AND RELATED LINES. With a tester connected, disconnect control module connectors in order. Connector & terminal (B280) No. 11 - No. 21 | Is there any control module whose condition has changed from short state? | Replace the control module whose resistance has changed. | Repair or replace the short circuit of the main wiring harness and related lines between body integrated unit and keyless access CM. |
| 3 CHECK CONTROL MODULE. Disconnect the connectors of the body integrated unit and the keyless access CM. Using a tester, measure the resistance between control module terminals. Connector & terminal (B280) No. 11 - No. 21: (i242) No. 15 - No. 14 | Is the resistance 115 - 135 ohms? | Go to step 4 . | Replace the control module whose end resistance value is out of the specified range. |
| 4 CHECK HARNESS. With a tester connected, disconnect control modules in order. Connector & terminal (B281) No. 11 - No. 21 | 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 due to resistance component. |
CAN communication system. See appropriate SYSTEM WIRING DIAGRAM article.
Note. When the CAN communication circuit is measured, combined resistance of end resistance (120 ohms) in body integrated unit and end resistance (120 ohms) in keyless access CM can be measured. The combined resistance is approximately 57 - 63 ohms. When the measured resistance value is 64 ohms or more, either of end resistance or main wiring harness may have malfunction such as open circuit.
| Step | Check | Yes | No |
|---|---|---|---|
| 1 CHECK CONTROL MODULE. Disconnect the connectors of the body integrated unit and the keyless access CM. Using a tester, measure the resistance between control module terminals. Connector & terminal (B280) No. 11 - No. 21: (i242) No. 15 - No. 14 | Is the resistance 115 - 135 ohms or more? | Go to step 2 . | Replace the control module whose value is out of the specification. |
| 2 CHECK HARNESS. Using a tester, check continuity between terminals. Connector & terminal (B280) No. 11 - No. 21: (i242) No. 15 - No. 14 | Is there continuity? | It is possible that temporary poor communication occurs. | Repair or replace the open circuit of harness. |
CAN communication system. See appropriate SYSTEM WIRING DIAGRAM article.
| Step | Check | Yes | No |
|---|---|---|---|
| 1 CHECK BETWEEN RELATED LINES AND MAIN WIRING HARNESS. Disconnect the remote engine start CM connector. Using the tester, measure the resistance between terminals. Connector & terminal (B180) No. 2 - No. 3 | Is the resistance 400 ohms or more? | Related lines between remote engine start CM 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 (B280) No. 11 - (B180) No. 2: (B280) No. 21 - (B180) No. 3 | Is the resistance 10 ohms or more? | Repair or replace the open circuit portion of remote engine start CM related lines. | Check that the remote engine start function operates normally. |
Power Seat System. See appropriate SYSTEM WIRING DIAGRAM article.
Scheme 19
| Step | Check | Yes | No |
|---|---|---|---|
| 1 CHECK BODY INTEGRATED UNIT SETTING. Using Subaru Select Monitor, change "Seat Memory Setting" of the body integrated unit registration (function setting) from ON to OFF. Read the DTC of CAN system. | Is U1601 detected? | Replace the body integrated unit. Refer to REMOVAL . | Go to step 2 . |
| 2 CHECK BODY INTEGRATED UNIT SETTING. Using Subaru Select Monitor, change "Seat Memory Setting" of the body integrated unit registration (function setting) to ON. Disconnect the power seat CM and the body integrated unit connector. Connect the disconnected connectors. Using the Subaru Select Monitor, read DTC of CAN system. | Is U1601 detected? | 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 seat CM and the body integrated unit connector. Using the tester, measure the resistance between terminals. Connector & terminal (i171) No. 16 - (R388) No. 12 | 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 (R388) No. 12 - 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 (R388) No. 12 - Chassis ground | Is the voltage less than 1 V? | Go to step 6 . | Repair the shorted portion of harness. |
| 6 CHECK CONTROL MODULE. Turn the ignition switch to OFF. Replace the power seat CM with a normal part. Using the Subaru Select Monitor, read DTC of CAN system. | Is U1601 detected? | Replace the body integrated unit. Refer to REMOVAL . | Replace the power seat CM. Refer to POWER SEAT CONTROL MODULE (SEAT WITH MEMORY FUNCTION) . |
DIAGNOSTIC PROCEDURE