Principles of Operation

The lighting control module (LCM) controls several vehicle subsystems. Diagnostic information is retrieved from the LCM on the standard corporate protocol (SCP) network. The LCM responds to electrical input signals from various switches, sensors, and external modules. The LCM is located under the LH side of the instrument panel. Subsystem functions of the LCM include:

• Battery saver and control backlighting
• Brake shift interlock
• Exterior lighting
• Interior lighting
• Perimeter alarm