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 the data list value indicated ON?

YES -

Go to step 4.

NO -

Go to step 8.

4. Disconnect the left rear door lock actuator/knob switch 10P connector.

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

Is the data list value indicated OFF?

YES -

Faulty left rear door lock knob switch; replace the left rear door 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. 45 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 left rear door lock actuator/knob switch 10P connector.

9. Connect left rear door lock actuator/knob switch 10P connector terminal No. 7 and body ground with a jumper wire.





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

Is data list value indicated ON?

YES -

Go to step 11.

NO -

Go to step 12.

11. Check for continuity between left rear door lock actuator/knob switch 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 wire or poor ground (G601).

12. Connect under-dash fuse/relay box connector C (49P) terminal No. 45 and body ground with a jumper wire.





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