Tailgate Latch Switch Circuit Troubleshooting

Keyless/Power Door Locks/Security System Symptom Troubleshooting - Tailgate latch switch circuit troubleshooting

Tailgate latch switch circuit troubleshooting

1. Turn the ignition switch to ON (II).

2. With the tailgate closed, select SECURITY with the HDS, and enter the DATA LIST.

3. Check the ON/OFF information of the TRUNK LID/TAIL GATE SWITCH in the DATA LIST.

Is the data list value indicated ON?

YES -

Go to step 4.

NO -

Go to step 8.

4. Disconnect the tailgate latch switch 2P connector.

5. Check the ON/OFF information of the TRUNK LID/TAIL GATE SWITCH in the DATA LIST.

Is the data list value indicated OFF?

YES -

Faulty tailgate latch switch, replace the tailgate latch Service and Repair.

NO -

Go to step 6.

6. Disconnect under-dash fuse/relay box connector C (49P).

7. Check for continuity between under-dash fuse/relay box connector C (49P) terminal No. 22 and body ground.





Is there continuity?

YES -

Repair a short to ground in the wire.

NO -

Faulty MICU; replace the under-dash fuse/relay box.

- USA models Under-Dash Fuse/Relay Box Removal and Installation (USA Models)
- Canada models Under-Dash Fuse/Relay Box Removal and Installation (Canada Models)

8. Disconnect the tailgate latch switch 2P connector.

9. Connect tailgate latch switch 2P connector terminal No. 1 and body ground with a jumper wire.





10. Check the ON/OFF information of the TRUNK LID/TAIL GATE SWITCH in the DATA LIST.

Is the data list value indicated ON?

YES -

Go to step 11.

NO -

Go to step 12.

11. Check for continuity between tailgate latch switch 2P connector terminal No. 2 and body ground.





Is there continuity?

YES -

Faulty tailgate latch switch; replace the tailgate latch Service and Repair.

NO -

Repair an open or high resistance in the wire or poor ground (G602).

12. Connect under-dash fuse/relay box connector C (49P) terminal No. 22 and body ground with a jumper wire.





13. Check the ON/OFF information of the TRUNK LID/TAIL GATE SWITCH in the DATA LIST.

Is the data list value indicated ON?

YES -

Repair an open or high resistance in the wire.

NO -

Faulty MICU; replace the under-dash fuse/relay box.

- USA models Under-Dash Fuse/Relay Box Removal and Installation (USA Models)
- Canada models Under-Dash Fuse/Relay Box Removal and Installation (Canada Models)