Left Rear Door Lock Knob Switch Circuit Troubleshooting

Keyless/Power Door Locks/Security System Symptom Troubleshooting - Left rear door lock knob switch circuit troubleshooting

Left rear door lock knob switch circuit troubleshooting

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

2. With the left rear door lock knob switch in LOCK position, select SECURITY with the HDS, and enter the DATA LIST.

3. Check the ON/OFF information of the DRIVER'S REAR DOOR LOCK KNOB SWITCH (UNLOCK) in the DATA LIST.

Is information indicator ON?

YES -

Go to step 4.

NO -

Go to step 9.

4. Disconnect left rear door latch 10P connector.

5. Check the ON/OFF information of the DRIVER'S REAR DOOR LOCK KNOB SWITCH (UNLOCK) in the DATA LIST.

Is information indicator ON?

YES -

Go to step 6.

NO -

Faulty left rear door lock knob switch, replace the left rear door latch Service and Repair.

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

7. Disconnect under-dash fuse/relay box connector T (34P).

8. Check for continuity between left rear door latch 10P connector terminal No. 7 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 Under-Dash Fuse/Relay Box Removal and Installation.

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

10. Disconnect left rear door latch 10P connector.

11. Connect left rear door latch10P connector terminal No. 7 and body ground with a jumper wire.





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

13. Check the ON/OFF information of the DRIVER'S REAR DOOR LOCK KNOB SWITCH (UNLOCK) in the DATA LIST.

Is information indicator ON?

YES -

Go to step 14.

NO -

Go to step 16.

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

15. Check for continuity between left rear door latch 10P connector terminal No. 5 and body ground.





Is there continuity?

YES -

Faulty left rear door lock knob switch, replace the left rear door latch Service and Repair.

NO -

Repair an open or high resistance in the ground wire or poor ground (G601).

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

17. Connect under-dash fuse/relay box connector T (34P) terminal No. 26 and body ground with a jumper wire.





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

19. Check the ON/OFF information of the DRIVER'S REAR DOOR LOCK KNOB SWITCH (UNLOCK) in the DATA LIST.

Is information indicator ON?

YES -

Repair an open or high resistance in the wire.

NO -

Faulty MICU, replace the under-dash fuse/relay box Under-Dash Fuse/Relay Box Removal and Installation.