B1389

DTC B1389: Power Tailgate Motor Clutch Circuit Malfunction

1. Open the tailgate.
2. Close the tailgate automatically with the keyless transmitter or inside tailgate switch.
3. Turn the ignition switch OFF, and then back ON (II).
4. Clear the DTCs with the HDS.
5. Check for DTCs with the HDS.

Is DTC B1389 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 connector, and at the drive unit connector.

6. Turn the ignition switch OFF.
7. Open the tailgate.
8. Disconnect the 20P connector from the power tailgate control unit.




9. Check for continuity between the power tailgate control unit connector B (20P) No. 9 and No. 20 terminals and body ground.

Is there continuity?

YES - Repair a short in the wire. If the wire is OK, replace the drive unit.

NO - Go to step 10.




10. Measure voltage between the power tailgate control unit connector B (20P) No. 12 terminal and body ground.

Is there battery voltage?

YES - Replace the power tailgate control unit.

NO - Check the No. 17 (20 A) fuse in the driver's under-dash fuse/relay box. If the fuse is OK, check for an open in the wire between the auxiliary under-hood fuse box and the power tailgate control unit.