Test No. 2
- Remove key from ignition switch. Open any door. Disconnect CPU 20-pin connector. SeeFigure . Ground terminal 2D (Blue/Green wire) of CPU 20-pin connector. If security light comes on, replace CPU. If security light does not come on, check voltage at terminal 2N (Blue/Red wire) of 14-pin instrument cluster connector. SeeFigure .
- If battery voltage is not present, repair wiring between ROOM fuse and instrument cluster. If battery voltage is present, check voltage at terminal 2M (Blue/Green wire) of 14-pin instrument cluster connector. If battery voltage is present, repair wiring between instrument cluster and CPU. If battery voltage is not present, replace security light bulb.