Drivers Door Key Cylinder Switch Circuit Troubleshooting

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

Driver's door key cylinder switch circuit troubleshooting

NOTE: Before troubleshooting, check the B-CAN DTCs. If any DTC is indicated, refer to the B-CAN System Diagnosis Test Mode A Troubleshooting - B-CAN System Diagnosis Test Mode A, and troubleshoot the indicated DTCs first.

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

2. Disconnect the 10P connector from the driver's door lock actuator/knob switch.

3. Connect driver's door lock actuator/knob switch 10P connector terminal No. 9 and body ground with a jumper wire.





4. Select SECURITY with the HDS, and enter the DATA LIST.

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

Is data list value indicated ON?

YES -

Go to step 6.

NO -

Go to step 8.

6. Test the door key cylinder switch Door Key Cylinder Switch Test.

Is the switch OK?

YES -

Go to step 7.

NO -

Faulty driver's door key cylinder switch; replace the driver's door latch Service and Repair.

7. Check for continuity between driver's door lock actuator/knob switch 10P connector terminal No. 5 and body ground.





Is there continuity?

YES -

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)

NO -

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

8. Connect under-dash fuse/relay box connector E (12P) terminal No. 3 and body ground with a jumper wire.





9. Check the ON/OFF information of the DRIVER'S DOOR KEY CYLINDER SWITCH (LOCK) in the DATA LIST.

Is 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)