B1386

DTC Troubleshooting: B1386

DTC B1386:

Power Tailgate Sensor Pulse A Circuit Malfunction

NOTE:

- If you are troubleshooting multiple DTCs, be sure to follow the instructions in B-CAN System Diagnosis Test Mode A Troubleshooting - B-CAN System Diagnosis Test Mode A.
- If the motor does not operate, check the No. 1 (40A) fuse in the auxiliary under-dash fuse/relay box. If the fuse is OK, do the power tailgate motor test Power Tailgate Motor Test (With Power Tailgate).

1. Open the tailgate with the tailgate outer handle.

2. Close the tailgate automatically with the keyless transmitter or inside tailgate switch.

3. Turn the ignition switch to LOCK (0) and then back to 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 system is OK at this time. Check for loose or poor connections between the power tailgate control unit and the drive unit.�

6. Turn the ignition switch to LOCK (0).

7. Connect the voltmeter to power tailgate control unit connector B (20P) terminals No. 14 and No. 18.

8. Measure the voltage between power tailgate control unit connector B (20P) terminals No. 14 and No. 18 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 Service and Repair.�

NO -

Go to step 9.

9. Disconnect power tailgate control unit connector B (20P).

10. Disconnect drive unit connector B(8P).

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





Is there continuity?

YES -

Repair a short to ground in the wire.�

NO -

Go to step 12.

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





Is there continuity?

YES -

Faulty power tailgate sensor A, replace the drive unit Service and Repair.�

NO -

Repair an open or high resistance in the wire.�