Circuit Description

WARNING: This page is about a different car, the 2003 Chevrolet Corvette. However, it is still accessible from the selected car via links, so may be relevant.

The driver door module (DDM) provides output controls for the driver door switch illumination, memory 1 indicator, memory 2 indicator, LH mirror select indicator and the RH mirror select indicator. These output controls allow the DDM to illuminate the driver door switch back lighting, memory indicators and mirror select indicators. The DDM provides a single power supply for all illuminated light functions. The DDM uses a pulse-width modulated ground output to control the dimming level to the driver door switch back lighting lamp. The DDM also provides a ground output for the memory 1, memory 2, LH and RH mirror select switch indicators. The DDM provides a ground output to each of these indicators to illuminate the applicable indicator based upon the driver door switch signal information. The DDM monitors the amount of current draw on all of the illumination lamp control circuits. If the DDM detects an overcurrent condition for longer than 10 milliseconds, a DTC is set.

The passenger door module (PDM) provides an illuminated LED output control for the passenger door switch assembly. This output control allows the PDM to illuminate the switch assembly when the park lamps and/or headlamps are ON. The PDM provides power and a Pulse-Width Modulation (PWM) ground output to the passenger door switch. The PDM monitors the amount of current draw on the illumination lamp control circuit. If the PDM detects an overcurrent condition for longer than 10 milliseconds, a DTC is set.