CX and DX Models
1. Place the ceiling light in the center position. Does the ceiling light come on, even with all the doors closed?Yes - Faulty door switch or short in wiring to door switches.
No - Go to the next step.
2. With the ignition switch in the ON (II) position, does the trunk open indicator in the gauge assembly come on, even with the trunk closed?
Yes - Faulty trunk latch switch or short in the BLU/BLK wire.
No - Go to the next step.
3. Does 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/BLK or LT GRN/RED) wire.
4. Does voltage at terminal 3 of the security control unit connector change from battery voltage with the trunk closed, to less than 1 volt when the trunk is opened?
Yes - Replace the security control unit.
No - Repair the open in the terminal 3 (BLU/BLK) wire.