Corvette V8-5.7L VIN G (1997)
Vanity Lamp: Description and Operation
VANITY MIRROR 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 the MONITORED LD Micro Relay #43 and removing battery voltage from CKT 640. This function is used
to help prevent the battery from losing voltage over a period of time in the case of a load being left ON. The vanity mirror lamps are grounded by
CKT 150 through Splice Pack #202 to G202.
INSIDE REARVIEW MIRROR LAMPS
Voltage is supplied to the inside rearview 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 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 inside rearview 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 inside rearview mirror lamp is inadvertently left ON, the BCM will remove the
ground from CKT 1393 de-energizing the MONITORED LD Micro Relay #43 and removing battery voltage from CKT 640. This function is used
to help prevent the battery from losing voltage over a period of time in the case of a load being left ON. The inside rearview mirror lamps are
grounded by CKT 150 through Splice Pack #202 to G202.
I/P COMPARTMENT LAMP
Voltage is supplied to the I/P Compartment Lamp 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 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 I/P Compartment Lamp and it becomes functional. The BCM will monitor CKT 640 at the BCM connector C2
terminal C4 for an inadvertent load. In the event that the I/P Compartment Lamp is inadvertently left ON, the BCM will remove the ground from
CKT 1393 de-energizing the MONITORED LD Micro Relay #43 and removing battery voltage from CKT 640. This function is used to help
prevent the battery from losing voltage over a period of time in the case of a load being left ON. The I/P Compartment Lamp is grounded by CKT
150 through Splice Pack #202 to G202.
UNDERHOOD LAMP
Voltage is supplied to the Underhood Lamp 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 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 Underhood Lamp and it becomes functional. The BCM will monitor CKT 640 at the BCM connector C2 terminal C4 for an
inadvertent load. In the event that the Underhood Lamp is inadvertently left ON, the BCM will remove the ground from CKT 1393 de-energizing
the MONITORED LD Micro Relay #43 and removing battery voltage from CKT 640. This function is used to help prevent the battery from losing
voltage over a period of time in the case of a load being left ON. The Underhood Lamp is grounded by CKT 150 through Splice Pack #102 to
G102.
I/P COURTESY LAMPS
The I/P courtesy lamps are used within the courtesy lamp feature. The BCM activates the CTSY LP Micro Relay #42 by grounding CKT 690.
Battery voltage is then supplied from the CTSY LP Micro Relay #42, through CKT 740 to both of the I/P courtesy lamps. When the BCM
experiences a courtesy lamp request, it activates the MONITORED LD Micro Relay #43 in the instrument panel electrical center by applying a
ground to CKT 690. This causes battery voltage to be applied to CKT 740 and to the I/P courtesy lamps. The I/P courtesy lamps will then
illuminate. The I/P courtesy lamps are grounded by CKT 150 through Splice Pack #202, #201 to G201, G202.
INSIDE REARVIEW MIRROR COURTESY LAMPS
The inside rearview mirror lamps are also used within the courtesy lamp feature. The BCM activates the CTSY LP Micro Relay #42 by grounding
CKT 690. Battery voltage is then supplied from the CTSY LP Micro Relay #42, through CKT 740 to both of the inside rearview mirror lamps.
When the BCM experiences a courtesy lamp request, it activates the MONITORED LD Micro Relay #43 in the instrument panel electrical center
by applying a ground to CKT 690. This causes battery voltage to be applied to CKT 740 and to the inside rearview mirror lamps. The inside
rearview mirror lamps will then illuminate. The inside rearview mirror lamps are grounded by CKT 150 through Splice Pack #202 to G202.
REAR COMPARTMENT COURTESY LAMPS
The rear compartment courtesy lamps are used within the courtesy lamp feature. The BCM activates the CTSY LP Micro Relay #42 by grounding
CKT 690. Battery voltage is then supplied from the CTSY LP Micro Relay #42, through CKT 740 to both of the rear compartment courtesy
lamps. When the BCM experiences a courtesy lamp request, it activates the MONITORED LD Micro Relay #43 in the instrument panel electrical
center by applying a ground to CKT 690. This causes battery voltage to be applied to CKT 740 and to the rear compartment courtesy lamps. The
rear compartment courtesy lamps will then illuminate. The rear compartment courtesy lamps are grounded by CKT 150 through Splice Pack #302
to G302.
ACCESSORIES (CIGAR LIGHTER/ELECTRONIC ACCESSORY PLUG)
Constant battery voltage is applied to the cigar lighter from the C/LTR Mini Fuse® #7 through CKT 840. When the cigar lighter is pushed in, the