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 8.

4. Disconnect the 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 OFF?

YES -

Faulty left rear door lock knob switch; replace the driver's door latch Service and Repair.�

NO -

Go to step 6.

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

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

Is information indicator OFF?

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 left rear door latch 10P connector.

9. Connect left rear door latch 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 information indicator ON?

YES -

Go to step 11.

NO -

Go to step 12.

11. 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).�

12. Connect driver's under-dash fuse/relay box connector D (16P) terminal No. 15 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 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).�