B1377

DTC Troubleshooting: B1377

DTC B1377:

Power Tailgate Inner Switch Circuit Malfunction

NOTE: If you are troubleshooting multiple DTCs, be sure to follow the instructions in B-CAN System Diagnosis Test Mode A Troubleshooting - B-CAN System Diagnosis Test Mode A.

1. Clear the DTCs with the HDS.

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

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 power tailgate control unit connector C (14P) terminal No. 8 and body ground.





Is there continuity?

YES -

Repair a short to ground in the wire.�

NO -

Go to step 10.

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

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





Is there continuity?

YES -

Repair a short to ground in the wire.�

NO -

Go to step 12.

12. Test the inside tailgate switch Inside Tailgate Switch Test/Replacement (With Power Tailgate).

Is the switch OK?

YES -

Replace the power tailgate control unit.�

NO -

Replace the inside tailgate switch Inside Tailgate Switch Test/Replacement (With Power Tailgate).�