B1377

DTC Troubleshooting: B1377

DTC B1377:

Power Tailgate Inside 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. Turn the ignition switch to LOCK (0), and then back to ON (II).

2. Clear the DTCs with the HDS.

3. Open the tailgate with the keyless transmitter.

4. Push the inside tailgate button 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 power tailgate system is OK at this time. Check for loose or poor connections at the power tailgate control unit connectors and at the inside tailgate switch connector.�

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.

Is the switch OK?

YES -

Go to step 13.

NO -

Replace the inside tailgate switch.�

13. Reconnect the 5P connector to the inside tailgate switch.

14. With the inside tailgate button pressed, check for continuity between power tailgate control unit connector B (20P) terminal No. 5 and power tailgate control unit connector C (14P) terminal No. 8.





Is there continuity?

YES -

Replace the power tailgate control unit.�

NO -

Repair an open in the wire.�