Drivers Door Switch Circuit Troubleshooting

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

Driver's door switch circuit troubleshooting

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

2. With the driver's door closed, select SECURITY with the HDS, and enter the DATA LIST.

3. Check the ON/OFF information of the DRIVER'S DOOR SWITCH in the DATA LIST.

Is information indicator ON?

YES -

Go to step 4.

NO -

Go to step 8.

4. Disconnect the driver's door switch 2P connector.

5. Check the ON/OFF information of the DRIVER'S DOOR SWITCH in the DATA LIST.

Is information indicator OFF?

YES -

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

NO -

Go to step 6.

6. Disconnect driver's MPCS unit connector A (40P).

7. Check for continuity between driver's MPCS unit connector A (40P) terminal No. 3 and body ground.

Is there continuity?

YES -

Repair a short to ground in the wire.

NO -

Replace the driver's MPCS unit Power Windows (Drivers MPCS Unit) Input Test/Replacement.

8. Disconnect the driver's door switch 2P connector.

9. Connect driver's door switch 2P connector terminal No. 2 to body ground with a jumper wire.

10. Check the ON/OFF information of the DRIVER'S DOOR SWITCH 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 switch 2P connector terminal No. 1 and body ground.

Is there continuity?

YES -

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

NO -

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

12. Connect driver's MPCS unit connector A (40P) terminal No. 3 to body ground with a jumper wire.

13. Check the ON/OFF information of the DRIVER'S DOOR SWITCH in the DATA LIST.

Is information indicator ON?

YES -

Repair an open or high resistance in the wire.

NO -

Replace the driver's MPCS unit Power Windows (Drivers MPCS Unit) Input Test/Replacement.