Operation CHARM: Car repair manuals for everyone.

Power Output Diagnostic Mode

There is a Power Output Diagnostic Mode in the Multi-Function Alarm Module that can be used to run a quick check on the operation of the Parasitic Power Control, the Courtesy Lamps Control, and Inadvertent Power Control outputs. It is activated after all of the following actions have been performed:
^ Close all doors.
^ Set Park Brake.
^ Turn Interior Lamps on using Panel Dimmer Switch.
^ Turn Ignition Switch to "RUN" and, before 15 seconds pass, perform these steps:
- Open the RH front door.
- Cycle the Headlamp Switch from "PARK" to "OFF" 3 times.

During normal operation (no trouble found), the Multi-Function Alarm Module will flash the interior lamps until the ignition is turned off. In the event of an internal short is found in the Multi-Function Alarm Module, the module will chime as follows:
A. 1 chime every 3 seconds - Inadvertent output failure
B. 2 chimes every 3 seconds - Courtesy output failure
C. 3 chimes every 3 seconds - Parasitic output failure

NOTE: The Multi-Function Alarm Module can now be reset by a battery disconnect. This can be accomplished by removing the INT LAMP Fuse.