DTC : B1377 (2016 2017 2018)

DTC B1377  : Power Tailgate Inner switch circuit malfunction

DTCs (Power Tailgate Control Unit)

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

1. Problem verification

   - 1. Clear the DTCs with the HDS.

   Clear DTCs

   - 2. Open the tailgate with the keyless transmitter.

   - 3. Push the power tailgate inside switch for more than 1 second.

   - 4. Check for DTCs with the HDS.

   DTC Description	DTC
   B1377 Power Tailgate Inner switch circuit malfunction

   Is DTC B1377 indicated?

   YES 

   Go to step 2.

   NO 

   Intermittent failure, the system is OK at this time. Check for loose or poor connections between the power tailgate control unit and the power tailgate inside switch.

2. Shorted wire check (PTG GTSW line)

   - 1. Turn the vehicle to the OFF (LOCK) mode.

   - 2. Disconnect the following connector.

   Power tailgate control unit connector C (14P)

   - 3. Check for continuity between test points 1 and 2.

   Test condition

   Vehicle OFF (LOCK) mode Power tailgate control unit connector C (14P): disconnected

   Test point 1	Power tailgate control unit connector C (14P) No. 14 - Refer to: Power Tailgate Control Unit Connector for Inputs and Outputs (2016 2017 2018)
   Test point 2	Body ground

   Is there continuity?

   YES 

   Repair a short to ground in the wire.

   NO 

   Repair a short to ground in the wire.