Keyless/Power Door Locks/Security System Symptom Troubleshooting - The doors will relock even if the doors are opened once after unlocking with the transmitter

The doors will relock even if the doors are opened once after unlocking with the transmitter


1.Turn the ceiling light switch in DOOR position.

2.Turn the ignition switch ON (II).

3.Close all doors.

4.Watch the ceiling light and the door indicator on the gauge control module (tach).

Do the ceiling light and door indicator go off?


YES - Go to 5.


NO - Repair a short to ground in the wire between the MICU and the door switch.n


5.Open and close each door one at a time.

6.Watch the ceiling light and the door indicator on the gauge control module (tach).

Do the ceiling light and door indicator come on when the door is open, and go off when the door is closed?


YES - Substitute a known-good MICU and recheck. If the symptom goes away, replace the original  MICU.n


NO - Repair an open in the wire between the MICU and the door switch. If the wire is OK, faulty the door switch, replace the door lock actuator assembly.n