B1381

DTC Troubleshooting: B1381

DTC B1381: Power Tailgate Closer Unit Release Switch Circuit Malfunction

1. Open the tailgate with the tailgate outer handle switch.

2. Close the tailgate manually.

3. Turn the ignition switch to LOCK (0) and then back ON (II).

4. Clear the DTCs with the HDS.

5. Check for DTCs with the HDS.

Is DTC B1381 indicated?
YES - Go to step 6.

NO - Intermittent failure, the system is OK at this time. Check for loose or poor connections between the power tailgate control unit and the tailgate closer unit.


6. Open the tailgate with the tailgate outer handle.

7. Turn the ignition switch to LOCK (0).

8. Disconnect the 6P connector from the power tailgate closer unit.

9. Check for continuity between the power tailgate closer unit 6P connector terminals No. 1 and No. 6.

Is there continuity?
YES - Faulty release switch, replace the power tailgate closer unit.

NO - Go to step 10.






10. Check for continuity between the power tailgate closer unit 6P connector terminal No. 6 and body ground.

Is there continuity?
YES - Replace the power tailgate closer unit.

NO - Go to step 11.






11. Disconnect power tailgate control unit connector C (14P).

12. Check for continuity between the power tailgate control unit connector C (14P) terminal No. 4 and body ground.

Is there continuity?
YES - Repair short to ground in the wire.

NO - Go to step 13.






13. Turn the tailgate lock latch to the fully-closed position using a screwdriver.

14. Disconnect power tailgate control unit connector B (20P).

15. Connect battery power to the power tailgate control unit connector B (20P) terminal No. 2 and ground the terminal No. 1 momentarily. (The motor should run in the release direction.)






16. Check for continuity between the power tailgate control unit connector C (14P) terminals No. 4 and No. 11.

Is there continuity?
YES - Replace the power tailgate control unit.

NO - Go to step 17.






17. Disconnect the 6P connector from the power tailgate closer unit.

18. Check for continuity between the power tailgate closer unit 6P connector terminals No. 1 and No. 6.

Is there continuity?
YES - Repair open in the wire between the power tailgate closer unit and power tailgate control unit.

NO - Replace the power tailgate closer unit.