DTC B1390: Tailgate Closer Unit Malfunction

1. Clear the DTCs using the HDS.

1. Close the tailgate fully, then operate the tailgate outer handle, for more than 10 seconds. Check the un-locking operation.

Is there operation sound?

YES | - | Go to Step 3 .
NO | - | Go to Step 4 .

1. Check the DTCs by selecting the DTCs MENU (DTCs) from the HDS.

Is DTC B1390 indicated?

YES | - | Go to Step 15 .
NO | - | Intermittent failure, the system is OK at this time.■

1. Cycle the ignition switch to OFF.

1. Open the tailgate fully with emergency lever of inner side of tailgate.

1. Disconnect power tailgate control unit connector A (26P).

1. Disconnect the tailgate closer unit 12P connector.

1. Check for continuity between the No. 13 terminal of power tailgate control unit connector A (26P) and the No. 1 terminal of the tailgate closer unit 12P connector, the No. 26 terminal of power tailgate control unit connector A (26P) and the No. 2 terminal of the tailgate closer unit 12P connector.

Is there continuity?

YES | - | Go to Step 9 .
NO | - | Repair an open in the RED/BLU (CLM+) or BLK/RED (CLM−) wire.■

1. Disconnect power tailgate control unit connector B (5P).