B1377

DTC Troubleshooting: B1377

DTC B1377: Inside Tailgate Switch Circuit Malfunction

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

2. Clear the DTCs with the HDS.

3. Open the tailgate with the keyless transmitter.

4. Push the inside tailgate switch for more than 2 seconds.

5. Check for DTCs with the HDS.

Is DTC B1377 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 inside tailgate switch.


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

7. Disconnect the 5P connector from the inside tailgate switch.

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

9. Check for continuity between the power tailgate control unit connector C (14P) terminal No. 8 and body ground.

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

NO - Go to step 10.






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

11. Check for continuity between the power tailgate control unit connector B (20P) terminal No. 5 and body ground.

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

NO - Go to step 12.






12. Test the inside tailgate switch. Driver's Door Power Tailgate Switch Test/Replacement (With Power Tailgate)

Is the switch OK?
YES - Replace the power tailgate control unit.

NO - Replace the inside tailgate switch.