JEEP XJ 1995 Service And Repair Manual

When the park lamp relay energizes, the relay con-
tacts close and connect circuit F81 from fuse 6 in the
fuse block to circuit L36. Circuit L36 connects to the
contact side of the high beam relay. The contacts in
the high beam relay are normally closed. Battery
voltage flows through high beam relay to the fog
lamps on circuit L39. Circuit L39 also splices to the
lamp in the fog lamp switch.
Circuit L3 from the dimmer switch provides power
for the high beams of the headlamps and connects to
Circuit G34. Circuit G34 powers the coil side of the
high beam relay. Circuit Z1 provides ground for the
coil. When the operator selects high beam operation
or flashes the optical horn, circuit G34 energizes the
high beam relay. When energized, the normally
closed contacts in the relay open, shutting off battery
voltage to the fog lamps on circuit L39.
HELPFUL INFORMATION
²Circuit A6 from fuse 3 in the PDC supplies voltage
to the fuse block for fuses in cavities 3 and 6. Fuse 6
in the fuse block protects circuit F81 which powers
the contact side of the park lamp relay.
²In the high beam position, the dimmer switch con-
nects circuit L20 from the headlamp switch to circuit
L3. The headlamp switch connects circuit A3 from
fuse 7 in the PDC with circuit L20. Circuits A3 and
L20 are HOT at all times.
DAYTIME RUNNING LAMP (DRL) MODULEÐ
CANADIAN VEHICLES ONLY
On Canadian vehicles, the low-beam headlamps op-
erate when the ignition switch is in the RUN position
and the headlamp switch is OFF.
When the ignition switch is in the START or RUN
positions, circuit A1 from fuse 4 in the Power Distri-
bution Center (PDC) connects to circuit A21. Circuit
A21 supplies voltage to circuit G5 through fuse 9 in
the fuse block. Circuit G5 splices to supply battery
voltage to the DRL module.
Circuit L20 from the headlamp switch connects to
the DRL module. Circuit L20 is HOT at all times.
The DRL module receives the vehicle speed sensor
input from circuit G7. Circuit G34 from the DRLmodule provides power for the high beam indicator
lamp in the instrument cluster.
Circuit L4 feeds the low beams of the headlamps.
When the headlamp switch is in the OFF position,
the DRL module powers the left and right headlamps
on circuit L4. When the headlamps are ON, the dim-
mer switch powers the low beams on circuit L4.
Circuit L3 feeds the high beams of the headlamps.
When the operator flashes the high beams with the
turn signal stalk, the DRL senses voltage on circuit
L3. When it senses voltage on circuit L3, the DRL
module stops supplying power to the low beams on
circuit L4.
Circuit Z1 provides ground for the DRL module.
Circuit Z1 terminates at the radiator left side sup-
port.
DIAGRAM INDEX
Component Page
Daytime Running Lamp (DRL) Module. . . .8W-50-3, 7, 9, 11
Fog Lamps.............................8W-50-9
Fog Lamp Switch........................8W-50-9
Fuse 3 (PDC)...........................8W-50-3
Fuse 4 (PDC)..........................8W-50-10
Fuse 6 (Fuse Block).......................8W-50-8
Fuse 7 (PDC)........................8W-50-3, 10
Fuse 8 (Fuse Block).......................8W-50-3
Fuse 9 (Fuse Block)......................8W-50-10
Headlamp Switch....................8W-50-3, 8, 10
Headlamp Dimmer Switch.................8W-50-3, 8
High Beam Relay.........................8W-50-9
Ignition Switch.........................8W-50-10
Instrument Cluster..................8W-50-3 thru 10
Left Headlamp.........................8W-50-4, 6
Left Park, Turn Signal Lamp...............8W-50-4, 6
Left Side Marker Lamp...................8W-50-4, 6
Park Lamp Relay.........................8W-50-8
Powertrain Control Module..................8W-50-11
Right Headlamp........................8W-50-5, 7
Right Park, Turn Signal Lamp..............8W-50-5, 7
Right Side Marker Lamp..................8W-50-5, 7
8W - 50 - 2 8W-50 FRONT LIGHTINGÐYJ VEHICLESJ