FREE REPAIR MANUALS & LABOR GUIDES 1982-2013 Vehicles
Courtesy of Operation CHARM: Car repair manuals for everyone.

Doors Do Not Unlock or Lock With the Transmitter

1. Do the door's unlock and lock when using the driver's door lock switch?

Yes - Go to the next step.
No - Repair the power door lock system.

2. Does the transmitter LED come on when any of the buttons are pressed?

Yes - Go to the next step.
No - Check the transmitter battery, then retest. If the doors still do not unlock or lock with the transmitter, go to the next step.

3. Recheck with a known good transmitter reprogrammed to the vehicle. Does the system work properly in all modes.

Yes - Replace and program the transmitter, then retest. Use the procedure for transmitter programming.
No - Go to the next step.




4. Run a jumper wire from terminal 9 of the keyless entry harness connector (B) to ground.
Do the doors unlock?

Yes - Go to the next step.
No - Repair the open in the terminal 9 (GRN/ORN) wire.




5. Run a jumper wire from terminal 10 of the keyless entry harness connector (B) to ground.
Do the doors lock?

Yes - Go to the next step.
No - Repair the open in the terminal 10 (GRN/WHT) wire.




6. Does the voltage at terminal 1 of the keyless entry harness connector (B) change from battery voltage when the key is not in the ignition, to less than 1 volt when the key is in the ignition?

Yes - Go to the next step.
No - Replace the ignition switch or repair the damaged terminal 1 (BLU/RED) wire.




7. Does the voltage at terminal 14 of the keyless entry harness connector (B) change from battery voltage when all the doors are closed, to less than 1 volt when any door is opened?

Yes - Replace the radio.
No - Repair the open in the terminal 14 (LT GRN/RED) wire.

8. Do the door's unlock and lock when using the driver's door lock switch?

Yes - Go to the next step.
No - Repair the power door lock system.

9. Does the transmitter LED come on when any of the buttons are pressed?

Yes - Go to the next step.
No - Check the transmitter battery, then retest. If the doors still do not unlock or lock with the transmitter, go to the next step.

10. Recheck with a known good transmitter reprogrammed to the vehicle. Does the system work properly in all modes.

Yes - Replace and program the transmitter, then retest. Use the procedure for transmitter programming.
No - Go to the next step.




11. Does the voltage at terminal 3 of the keyless door lock control unit connector change from battery voltage when the key is not in the ignition, to less than 1 volt when the key is in the ignition?

Yes - Go to the next step.
No - Replace the ignition switch or repair the damaged terminal 3 (BLU/RED) wire.




12. Does the voltage at terminal 12 of the keyless door lock control unit connector change from battery voltage when all the doors are closed, to less than 1 volt when any door is opened?

Yes- Replace the keyless door lock control unit.
No - Repair the open in the terminal 12 (LT GRN/RED) wire.