Security Alarm Doesn't Trigger, System Armed, Trunk/Door Opened

1. Place the ceiling light in the center position, then open and close the doors one at a time. Do all the doors operate the ceiling light properly ?

Yes - Go to the next step.
No - Repair the ceiling light circuit.

2. With the ignition switch in the ON (II) position, does the trunk open indicator in the gauge assembly come on with the trunk open?

Yes - Go to the next step.
No - Faulty trunk latch switch or an open in the BLU/BLK wire.




3. Does the voltage at terminal 2 of the security control unit connector change from battery voltage with all doors closed, to less than 1 volt when any door is opened?

Yes - Go to the next step.
No - Repair the open in the terminal 2 (LT GRN/RED) wire.




4. Does the voltage at terminal 3 of the security control unit connector change from battery voltage with the trunk closed, to less than 1 voltwhen the trunk is opened?

Yes - Replace the security control unit.
No - Repair the open in the terminal 3 (BLU/BLK) wire.