DTC Troubleshooting: B1377

DTC B1377:  Power Tailgate Inner Switch Signal Error


1.Clear the DTC by selecting the DTCs MENU (DTCs) from the Honda PGM Tester or the HDS.

2.Cycle the ignition switch to OFF and then back ON.

3.Open the tailgate fully with the transmitter, and push the power tailgate inner switch 2 seconds or more.

4.Check for DTCs by selecting the DTCs MENU (DTCs) from the Honda PGM Tester or the HDS.

Is DTC B1377 indicated?


YES - Go to 5.


NO - Intermittent failure, the system is OK at this time.n


5.Cycle the ignition switch to OFF.

6.Open the tailgate fully with the transmitter.

7.Disconnect connector A (26P) from the power tailgate control unit.

8.Check the continuity between the No. 9 and No. 12 terminals of power tailgate control unit connector A (26P) and body ground.

Is there continuity?


YES - Repair a short in the WHT/BLK (GTSW) or YEL/BLK (SCOM) wire.n


NO - Go to 9.

9.Check for continuity between the No. 9 and No. 12 terminals of power tailgate control unit connector A (26P).

Is there continuity with Power Tailgate Inner Switch pulled, and no continuity with Power Tailgate Inner Switch releaced?


YES - Faulty power tailgate control unit; replace it.n


NO - Repair an open in the WHT/BLK (GTSW) or YEL/BLK (SCOM) wire, or faulty power tailgate inner switch; replace it.n