Map Light: Description and Operation

CIRCUIT OPERATION
The overhead map lamps are powered by the 10 Amp fuse located in the junction block on the M1 circuit. This fuse is the Ignition-Off Draw (IOD) fuse and is located in cavity 5. This circuit is HOT at all times.

Ground for the lamps is supplied on two different circuits. One way is when the operator turns the lamp ON by CLOSING the switch. A ground path is completed on circuit Z1. This ground terminates at the instrument panel left side cowl.

Ground for the lamp(s) can also be supplied on circuit M2 when the Body Control Module (BCM) supplies a ground path for the illuminated entry relay.