Introduction

CIRCUIT OPERATION
The Body Control Module (BCM) controls the courtesy lamps and rear cargo lamps. The reading dome/ reading lamps in the overhead console act as courtesy lamps as well as containing a switch for independent operation.

Circuit 707 from the dimmer switch circuitry in the head lamp switch provides the illumination lamp intensity signal to the BCM. The BCM powers the illumination lamps on circuit E2.

When the ignition switch is in the START or RUN position, it connects circuit A1 from fuse 8 in the Power Distribution Center (PDC) to circuit A21. Circuit A21 powers circuit F99 through PDC fuse 15. Circuit F99 feeds the BCM.

In the ACCESSORY or RUN position, the ignition switch connects circuit A1 to circuit A31. Circuit A31 powers circuit V23 through fuse 3 in the junction block. Circuit V23 feeds the BCM.