Vanity Mirror Convenience Lamps

Voltage is supplied to the vanity mirror lamps from CKT 640. CKT 640 receives battery voltage when the MONITORED LD Micro Relay #43 has closed its contact switch. The opening and closing of the MONITORED LD Micro Relay #43 is controlled by the Body Control Module (BCM) through CKT 1393. The BCM will ground CKT 1393 under normal operating conditions and energize the relay which in turns energizes CKT 640. Battery voltage is then supplied to the vanity mirror lamps and they becomes functional. The BCM will monitor CKT 640 at the BCM connector C2 terminal C4 for an inadvertent load. In the event that the a vanity mirror lamp is inadvertently left ON, the BCM will remove the ground from CKT 1393 de-energizing.