Trunk / Liftgate: Testing and Inspection

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

Trunk lid latch switch circuit troubleshooting

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

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

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

Is information indicator ON?

YES -

Go to step 4.

NO -

Go to step 8.

4. Disconnect the trunk lid latch 3P connector.

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

Is information indicator OFF?

YES -

Faulty trunk lid latch switch; replace the trunk lid latch Service and Repair.�

NO -

Go to step 6.

6. Disconnect driver's under-dash fuse/relay box connector D (16P).

7. Check for continuity between driver's under-dash fuse/relay box connector D (16P) terminal No. 5 and body ground.





Is there continuity?

YES -

Repair a short to ground in the wire.�

NO -

Faulty driver's MICU; replace the driver's under-dash fuse/relay box, USA models Drivers Under-Dash Fuse/Relay Box (Drivers MICU) Removal and Installation (USA models), Canada models Drivers Under-Dash Fuse/Relay Box (Drivers MICU) Removal and Installation (Canada models).�

8. Disconnect the trunk lid latch 3P connector.

9. Connect trunk lid latch 3P connector terminal No. 1 and body ground with a jumper wire.





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

Is information indicator ON?

YES -

Go to step 11.

NO -

Go to step 12.

11. Check for continuity between trunk lid latch 3P connector terminal No. 2 and body ground.





Is there continuity?

YES -

Faulty trunk lid latch switch; replace the trunk lid latch Service and Repair.�

NO -

Repair an open or high resistance in the ground wire or poor ground (G901).�

12. Connect driver's under-dash fuse/relay box connector D (16P) terminal No. 5 and body ground with a jumper wire.





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

Is information indicator ON?

YES -

Repair an open or high resistance in the wire.�

NO -

Faulty driver's MICU; replace the driver's under-dash fuse/relay box, USA models Drivers Under-Dash Fuse/Relay Box (Drivers MICU) Removal and Installation (USA models), Canada models Drivers Under-Dash Fuse/Relay Box (Drivers MICU) Removal and Installation (Canada models).�