B1386

DTC B1386: Power Tailgate Sensor Pulse A Circuit Malfunction

NOTE: If the power tailgate does not operate, test the motor.

1. Open the tailgate with the tailgate outside handle.
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 B1386 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. Connect the voltmeter to the power tailgate control unit connector B (20P) No. 14 and No. 18 terminals.




8. Measure voltage between the power tailgate control unit connector B (20P) No. 14 and No. 18 terminals while the tailgate is opening and closing with the keyless transmitter or inside tailgate switch.

Does it alternate between about 0 V and 5 V?

NOTE: Digital voltmeter will read about 2.5 V.

YES - Replace the power tailgate control unit.

NO - Go to step 9.

9. Disconnect the 20P connector from the power tailgate control unit.
10. Disconnect the 8P connector from the drive unit.




11. Check for continuity between the power tailgate control unit connector B (20P) No. 14 terminal and body ground.

Is there continuity?

YES - Repair a short in the wire.

NO - Go to step 12.




12. Check for continuity between the power tailgate control unit connector B (20P) No. 14 and No. 18 terminals and drive unit connector B (8P) No. 5 and No. 8 terminals.

Is there continuity?

YES - Faulty power tailgate sensor A, replace the drive unit.

NO - Repair an open in the wire.