Drivers Door Lock Knob Switch Circuit Troubleshooting

Keyless/Power Door Locks/Security System Symptom Troubleshooting - Driver's door lock knob switch circuit troubleshooting

Driver's door lock knob switch circuit troubleshooting

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

2. With the driver's 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 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 driver's door latch 10P connector.

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

Is information indicator OFF?

YES -

Faulty driver's door lock knob switch, replace the driver's door latch Service and Repair.

NO -

Go to step 6.

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

7. Check for continuity between power window master switch 37P connector terminal No. 32 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.

8. Disconnect the driver's door latch 10P connector.

9. Connect driver's door latch 10P connector terminal No. 7 and body ground with a jumper wire.





10. Check the ON/OFF information of the DRIVER'S 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 driver's door latch 10P connector terminal No. 5 and body ground.





Is there continuity?

YES -

Faulty driver's door lock knob switch, replace the driver's door latch Service and Repair.

NO -

Repair an open or high resistance in the ground wire or poor ground (G501).

12. Connect under-dash fuse/relay box connector T (34P) terminal No. 23 and body ground with a jumper wire.





13. Check the ON/OFF information of the DRIVER'S 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.