Keyless Entry Does Not Work In Any Mode

NOTE: Before beginning, verify that all the transmitters are programmed to the vehicle.

1. Does the radio work properly?

Yes - Go to step 9.
No - Go to the next step.


NOTE: For steps 2 - 8, refer to the schematic diagram for the Stereo Sound System.

2. Are fuses 28 (in the under-dash fuse box) and fuse 47 (in the under-hood fuse box) OK?

Yes - Go to step 4.
No - Replace the blown fuse, then go to the next step.

3. Does the fuse blow again?

Yes - Locate and repair the short.
No - Retest the system.

4. Is the vehicle equipped with the optional security system?

Yes - Go to the next step.
No - Go to step 6.

5. Does the keyless entry work correctly when the security control unit connector is disconnected?

Yes - Faulty security system, go to security system for further troubleshooting.
No - Go to the next step.




6. Is there battery voltage at terminal 4 of the radio main harness connector (A)?

Yes - Go to the next step.
No - Locate the open in the wiring between fuse 47 and the radio.




7. Is there battery voltage at terminal 5 of the radio main harness connector (A), when the ignition switch is in the ACC (I) or ON (II) position?

Yes - Go to the next step.
No - Locate the open in the wiring between fuse 28 and the radio.




8. Is there continuity from terminal 14 of the radio main harness connector (A) to ground?

Yes - Replace the radio.
No - Repair the open in the wiring between the radio and the ground (G501).

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

Yes - Go to step 12.
No - Go to the next step.




10. Is the transmitter battery installed with the positive side facing up?

Yes - Ensure that the battery contact tabs are repositioned, then replace the battery. Remove the key from the ignition, then close the doors and trunk. Press the LOCK button on the transmitter six times, then go to the next step.
No - Ensure that the battery contact tabs are repositioned, then reinstall the battery correctly. Then reprogram the transmitter and retest it. Use the procedure for transmitter programming.

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

Yes - Go to the next step.
No - Replace the transmitter and program it by using the procedure.

12. Does the system work properly in all modes?

Yes - Finished. The system is OK.
No - Go to the next step.

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

Yes - Replace the transmitter and program it by using the procedure.
No - Replace the radio.


NOTE: Before beginning, verify that all the transmitters are programmed to the vehicle.

14. Is the vehicle equipped with the optional security system?

Yes - Go to the next step.
No- Go to step 16.

15. Does the keyless entry work correctly when the security control unit connector is disconnected?

Yes - Faulty security system, go to security system for further troubleshooting.
No - Go to the next step.

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

Yes - Go to step 19.
No - Go to the next step.




17. Is the transmitter battery installed with the positive side facing up?

Yes - Ensure that the battery contact tabs are repositioned, then replace the battery. Remove the key from the ignition, then close the doors and trunk. Press the LOCK button on the transmitter six times, then go to the next step.
No - Ensure that the battery contact tabs are repositioned, then reinstall the battery correctly. Then reprogram the transmitter and retest it. Use the procedure for transmitter programming.

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

Yes - Go to the next step.
No - Replace the transmitter and program it by using the procedure.

19. Does the system work properly in all modes?

Yes - Finished. The system is OK.
No - Go to the next step.

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

Yes - Replace the transmitter and program it by using the procedure.
No - Replace the keyless door lock control unit.