Jeep 1997 Grand Cherokee Service Manual page 1324

8W - 44 - 16
DESCRIPTION AND OPERATION (Continued)
LIFTGATE COURTESY LAMP DISABLE
SWITCH
When closed, the liftgate disable switch provides
signal to the BCM on circuit M4 indicating a request
to disable the courtesy lamps. To operate, all the
doors must be closed with only the liftgate open.
Pushing on the liftgate lens activates the switch.
Pushing on the lense a second time deactivates the
switch.
After receiving the courtesy lamp disable signal,
the BCM turns off the courtesy lamps by de-energiz-
ing the courtesy lamp relay.
GLOVE BOX LAMP
Circuit A7 from 15 in the Power Distribution Cen-
ter (PDC) powers circuit M1 through fuse 16 in the
junction block. Circuit M1 powers the glove box
lamp. The lamp has a switch in series which when
closed, connects the lamp to ground on circuit Z1.
UNDERHOOD LAMP
Circuit M1 from fuse 16 in the Power Distribution
Center (PDC) feeds the underhood lamp. The lamp
contains a mercury switch which connects the lamp
to ground on circuit Z1 when the hood is raised.
VISOR VANITY MIRRORS
Circuit A7 from fuse 15 in the Power Distribution
Center (PDC) powers circuit M1 through fuse 16 in
the junction block. Circuit M1 feeds the visor vanity
mirror lamps. Each mirror has a switch grounds the
lamps in the mirrors to circuit Z1.
8W - 44 INTERIOR LIGHTING
OVERHEAD CONSOLE LAMPS
Circuit A7 from fuse 15 in the Power Distribution
Center (PDC) powers circuit M1 through fuse 16 in
the junction block. Circuit M1 feeds the overhead
console lamps.
Each overhead console lamp has a switch that con-
nects the lamps to ground on circuit Z1. The lamps
are also grounded when the Body Control Module
(BCM) energizes the courtesy lamp relay to connect
circuit M2 to ground on circuit Z1.
DAY/NIGHT MIRROR
When the ignition switch is in the RUN position, it
connects circuit A1 from fuse 8 in the Power Distri-
bution Center (PDC) circuit A22. Circuit A22 powers
circuit F83 through fuse 6 in the junction block. Cir-
cuit F83 feeds the day/night rear view mirror. Circuit
Z1 grounds mirror.
Circuits P112 and P114 connect from the day/night
mirror to the drivers outside mirror.
Circuit L10 from the park/neutral switch signals
the day/night mirror when the vehicle is in reverse.
The mirror turns off when the vehicle is in reverse.
UNIVERSAL GARAGE DOOR OPENER
Circuit A7 from fuse 15 in the Power Distribution
Center (PDC) powers circuit M1 through fuse 16 in
the junction block. Circuit M1 feeds the visor vanity
mirrors and the universal garage door opener. The
opener is located on the left visor. Circuit Z1 provides
ground for the opener.
ZG