Operation CHARM: Car repair manuals for everyone.

Lamps-On Chime

The multi-function alarm module sounds the lamps-on chime when the following conditions are met:
1. The battery voltage at the multi-function alarm module connector C1 terminal D indicates that the following components are on:
^ The parklamps
^ The headlamps

2. The multi-function alarm module connector C1 terminal M reads 0 volts. This condition indicates that the ignition switch is in one of the following positions:
^ OFF
^ ACCY
^ LOCK

3. Ground at the multi-function alarm module connector C1 terminal H indicates that the left front door is open.