sensor JEEP CHEROKEE 1994 Service Owners Manual

INSTRUMENT PANEL AND GAUGESÐYJE
CONTENTS
page page
GAUGE PACKAGE DIAGNOSIS............ 22
GAUGE PACKAGE GENERAL INFORMATION . 22
GAUGE PACKAGE SERVICE PROCEDURES . . 24
INSTRUMENT CLUSTER DIAGNOSIS....... 14INSTRUMENT CLUSTER GENERAL INFORMATION.14
INSTRUMENT CLUSTER SERVICE PROCEDURES.. 17
SPECIFICATIONS....................... 27
INSTRUMENT CLUSTER GENERAL INFORMATION
SPEEDOMETER/ODOMETER SYSTEM
The speedometer/odometer system consists of an
electric speedometer and pushbutton reset odometer
mounted in the cluster. The system also includes the
wire harness from the cluster to the vehicle speed
sensor at the transmission, and the adapter and pin-
ion in the transmission. A signal is sent from a
transmission mounted vehicle speed sensor to the
speedometer/odometer circuitry through the wiring
harness. Refer to Group 21 - Transmission for select-
ing the proper pinion, and selecting and indexing the
proper adapter.
TACHOMETER
The tachometer displays the engine speed (RPM).
With the engine running, the tachometer receives anengine speed signal from the Powertrain Control
Module pin 43 (values shown in Specifications chart).
INDICATOR LAMPS
The Brake, Upshift (2.5L with 5 speed transmis-
sion except California), and Malfunction Indicator
(Check Engine) lamps are located in the indicator
lamp panel above the steering column. The lamps
share a common battery feed connection through the
ignition switch and fuse #9.
The turn signals, high beam indicator, seat belt re-
minder, hazard lamp, master lighting and illumina-
tion bulbs are supplied battery voltage through
various switches and share a common ground.
INSTRUMENT CLUSTER DIAGNOSIS
INDEX
page page
Brake Indicator Lamp...................... 16
DiagnosingÐAll Lamps Out................. 16
Instrument Panel Illumination Lamps.......... 16
Malfunction Indicator Lamp (Check Engine)..... 16Seat Belt Reminder Lamp................... 16
Speedometer............................ 14
Tachometer............................. 14
Upshift Indicator Lamp..................... 16
SPEEDOMETER
(1) Raise vehicle.
(2) Disconnect the vehicle speed sensor connector.
(3) Connect a voltmeter between the black wire
pin of the connector and ground.
(4) Turn the ignition switch to the ON position.
(5) Check for approximately 5 volts. If OK, per-
form vehicle speed sensor test. Refer to the appropri-
ate Powertrain Diagnostic Procedures manual. If not
OK, continue with step 6.
(6) Turn ignition switch to OFF position.(7) Check continuity between vehicle speed sensor
connector and terminal 13 of instrument cluster con-
nector. If OK, replace speedometer. If not OK, repair
open circuit.
TACHOMETER
(1) Tachometer input is from the Powertrain Con-
trol Module (PCM) pin 43. Use the DRB scan tool to
perform actuator test. If OK, continue with step 2. If
not, replace PCM.
(2) Check for continuity between cluster connector
pin 12 and PCM pin 43. If OK, replace tachometer. If
not, repair open circuit.
8E - 14 YJ INSTRUMENT PANEL AND GAUGESJ

DIAGNOSINGÐALL LAMPS OUT
(1) Inspect fuse #9. Replace as required.
(2) Measure voltage at instrument cluster connec-
tor terminal 20. Meter should read zero ohms. If not,
repair open to ground.
UPSHIFT INDICATOR LAMP
Vehicles equipped with manual transmissions have
an optional upshift indicator lamp. The lamp is con-
trolled by the PCM. The lamp lights to indicate when
the driver should shift to the next highest gear for best
fuel economy. The PCM will turn the lamp off after 3 to
5 seconds if the upshift is not performed. The lamp will
remain off until the vehicle stops accelerating and is
brought back to the range of lamp operation or shifted
into another gear.
The indicator lamp is normally illuminated when
the ignition switch is turned ON and it is turned off
when the engine is started. The lamp will be lighted
during engine operation according to engine speed
and load.
(1) Turn ignition switch to ON.
(2) Ground pin 2 of cluster connector. Lamp should
light. If not, replace bulb. If OK, continue with step 3.
(3) Turn ignition switch to OFF. Check for conti-
nuity between cluster connector pin 2 and pin 54 of
the PCM. If not, repair open. If OK, refer to DRB
scan tool actuator test of upshift indicator.
BRAKE INDICATOR LAMP
The brake indicator is a dual function lamp. It will in-
dicate an unequal pressure condition in the split brake
hydraulic system and it also will indicate when the park-
ing brake is engaged. Separate switches are used for each
indicator lamp function. A switch mounted on the brake
pedal assembly will close a ground circuit whenever the
parking brakes are applied. A second switch is installed
in the brake hydraulic lines near the master cylinder. If
the switch is balanced by equal pressure on both ends of
the switch valve, the valve remains centered and the
lamp remains off. If the valve is shifted by unequal pres-
sure between the front or rear brake hydraulic systems,
the lamp circuit is connected to ground. To make sure
the brake lamp is functional before the vehicle is driven,
it is illuminated through a ground circuit when the igni-
tion switch is turned to the START position.
(1) Turn ignition switch to ON.
(2) Ground pin 1 of the cluster connector. Lamp
should light. If not, replace bulb. If OK, continue
with step 3.
(3) Turn ignition switch to OFF. Check for continuity to
park brake switch and brake warning switch.
MALFUNCTION INDICATOR LAMP (CHECK ENGINE)
The Malfunction Indicator Lamp (Check Engine) il-
luminates each time the ignition switch is turned
ON and stays on for 3 seconds as a bulb test.If the PCM receives an incorrect signal or no signal
from certain sensors or emission related systems the
lamp is turned on (pin 32 of PCM). This is a warning
that the PCM has recorded a system or sensor mal-
function. In some cases when a diagnostic fault is de-
clared the PCM will go into a limp-in mode in an
attempt to keep the system operating. It signals an
immediate need for service.
The lamp also can be used to display diagnostic
trouble codes (DTC). Cycle the ignition switch ON,
OFF, ON, OFF, ON within 5 seconds. This will allow
any DTC's stored in the PCM memory to be dis-
played in a series of flashes representing digits.
(1) Turn ignition switch to ON.
(2) Ground pin 4 of cluster connector. Lamp should
light. If not, replace bulb. If OK, continue with step 3.
(3) Turn ignition switch to OFF. Check for conti-
nuity between cluster connector pin 4 and PCM cav-
ity 32. If OK, replace PCM. If not, repair open.
SEAT BELT REMINDER LAMP
Apply 12 volts to terminal 16 of cluster connector.
Lamp should light. If not, replace bulb. If OK, check
wiring for an open to buzzer module. Refer to Group
8U - Chime/Buzzer Warning Systems.
INSTRUMENT PANEL ILLUMINATION LAMPS
The instrument panel illumination lamps share
two common connections. There is a splice after fuse
#10 that connects the lamps to battery feed. There is
also a splice that connects all lamps to ground. Be-
cause they share these common connection points in
a parallel circuit, the illumination lamps will all
come on at the same time. It also means one or more
lamps can be out without affecting the operation of
the other lamps.
On the battery side of the circuit, the headlamp
switch illumination rheostat/switch and panel lamps
fuse receive battery feed in series from the park/tail
fuse. In the park lamp position, the headlamp switch
completes the circuit from the park/tail fuse to the il-
lumination rheostat/switch and panel lamps fuse.
The illumination rheostat contains a variable resis-
tor that allows the driver to vary illumination inten-
sity from off to full brightness.
DIAGNOSIS
(1) Turn parking lamps ON.
(2) Check fuse #10. Replace as required.
(3) Measure voltage at battery side of fuse #10
with rheostat turned counterclockwise to clockwise
(LO to HI). Meter should read zero volts to battery
voltage. If not, replace headlamp switch.
(4) Measure resistance at ground side of fuse #10
with parking lamps OFF. Meter should read almost
zero ohms (except bulb filament). If not, repair open
to ground. If zero ohms, 12 volt supply wire from fuse
is shorted to ground, repair short.
8E - 16 YJ INSTRUMENT PANEL AND GAUGESJ

TEST PROCEDURES
INDEX
page page
Checking for Diagnostic Trouble Code......... 5
Electrical Tests at Powertrain Control Module.... 6
Electrical Tests at Servo.................... 5
Inoperative System........................ 5
Operational Check (Road Test)............... 7
Road Test............................... 5Speed Control Switch (Turn Signal Lever) Test . . . 7
Stop Lamp Speed Control Switch Test......... 7
Vacuum Supply Test....................... 7
Vehicle Speed Control System Electrical Tests . . . 5
Vehicle Speed Sensor Test.................. 5
ROAD TEST
Refer to Operational Check (Road Test) section to
verify reports of speed control system malfunction.
INOPERATIVE SYSTEM
Road test vehicle to verify reports of speed control
system malfunction. An inspection should be made
for loose electrical and vacuum connections at the
servo.
Check for correct installation of the vacuum check
valve in the hose from servo to vacuum source. The
word VAC on the valve must point toward the vac-
uum source.
Corrosion should be removed from electrical termi-
nals and a light coating of Mopar MultiPurpose
Grease, or equivalent, applied.
Inspection also should be made to verify that both
ends of the speed control cable are securely attached.
CHECKING FOR DIAGNOSTIC TROUBLE CODE
(1) When trying to verify a speed control system
electronic malfunction use a DRB scan tool to find
the cause (refer to Powertrain Diagnostic Procedures
manual).
If DRB is not available, the Diagnostic Trouble
Code (DTC) may be determined with the following
method:
(a) With key inserted in ignition switch, cycle
switch to ON position 3 times. On third cycle, leave
switch in ON position.
(b) After switch has been cycled 3 times, observe
Malfunction Indicator Lamp (CHECK ENGINE)
on instrument cluster. If a DTC is present, the code
will be displayed in a series of flashes representing
digits. Three flashes in rapid succession, a slight
pause, then 4 flashes in rapid succession would in-
dicate DTC 34.
(2) If a DTC 34 is observed, perform tests in the
sections Electrical Tests at Servo and Electrical Tests
at Powertrain Control Module.
If a DTC 15 is observed, perform test for a faulty
vehicle speed sensor.
(3) Correct any problems found when performing
these tests and recheck for DTC if changes were
made.
VEHICLE SPEED SENSOR TEST
For testing of the vehicle speed sensor and related
components, refer to Powertrain Diagnostic Proce-
dures manual.
VEHICLE SPEED CONTROL SYSTEM ELECTRICAL
TESTS
Vehicle speed control systems may be tested using
two different methods. One involves use of a DRB
scan tool. If this test method is desired, refer to Pow-
ertrain Diagnostic Procedures manual.
The other test method uses a voltmeter. The volt-
meter method is described in the following tests.
If any information is needed concerning wiring, re-
fer to Section 8W - Wiring Diagrams.
CAUTION: When test probing for voltage or conti-
nuity at electrical connectors, care must be taken
not to damage connector, terminals, or seals. If
these components are damaged, intermittent or
complete system failure may occur.
ELECTRICAL TESTS AT SERVO
(1) Turn ignition switch to the ON position. With
speed control switch in the ON position, setup a volt-
meter to read battery voltage and connect negative
lead to a good chassis ground.
(2) Disconnect 4-way connector going to servo
(Figs. 2 and 3). Blue wire with red tracer of main
harness 4-way connector should read approximately
battery voltage. If not, check for loose connections,
brake switch adjustment or, repair main harness as
necessary.
(3) Connect a jumper wire between male and fe-
male terminals of blue wire with red tracer. The
other 3 male terminals from servo should show bat-
tery voltage. If not, replace servo.
(4) Using an ohmmeter, connect one lead to a good
body ground. Touch other lead to black wire terminal
in 4-way connector of main harness. Meter should
show continuity. If not, repair ground circuit as nec-
essary.
JVEHICLE SPEED CONTROL SYSTEM 8H - 5

switch is turned OFF. The driver engages the module
by turning the ignition switch OFF, then turning the
headlamps OFF.
The headlamp delay module is located behind the
I/P next to the headlamp switch.
HEADLAMP DELAY MODULE REPLACEMENTÐXJ
VEHICLES
The headlamp delay module is attached to the in-
side of the instrument panel to the right of the head-
lamp switch.
REMOVAL
(1) Remove the lower instrument panel.
(2) Remove the screw that attaches the module to
the inside of the instrument panel.
(3) Disconnect the wire harness connector and re-
move the module from the instrument panel.
INSTALLATION
(1) Position the module inside the I/P and connect
the wire harness connector to the module.
(2) Install the screw that attaches the module to
the inside of the instrument panel.(3) Remove the lower instrument panel.
HEADLAMP DELAY FUNCTION TROUBLE
DIAGNOSISÐXJ VEHICLES
DELAY FUNCTION INOPERATIVE
(1) Remove, inspect and test the HD LP DLY fuse.
Replace if defective.
(2) Remove the delay module from the I/P. Do not
disconnect the wire harness connector. Turn the igni-
tion switch to the RUN position. Place the headlamp
switch in headlamps ON position. Turn the ignition
to the OFF position for a resistance test.
(3) Measure the resistance from the delay module
terminal 4 to vehicle body ground. The ohmmeter
should indicate zero ohms. If not, repair the open cir-
cuit in the wire harness to vehicle body ground.
(4) Measure the voltage between the delay module
terminal 8 and vehicle body ground. The voltmeter
should indicate battery voltage. If not, repair the
open circuit in the wire harness to the instrument
cluster indicator connector terminal 14.
(5) Measure the voltage between the delay module
terminal 6 and vehicle body ground. The voltmeter
should indicate battery voltage. If not, repair the
open circuit in the wire harness to the headlamp
switch.
(6) Measure the voltage between the delay module
terminal 2 and vehicle body ground. The voltmeter
should indicate battery voltage. If not, repair the
open circuit in the wire harness to the fuse.
DAYTIME RUNNING LIGHTS (CANADA ONLY)
SERVICE INFORMATION
The Daytime Running Lights (Headlamps) System
is installed on vehicles manufactured for sale in Can-
ada only. The headlamps are illuminated when the
ignition switch is turned to the ON position. The
DRL module receives a vehicle-moving signal from
the vehicle speed sensor. This provides a constant
headlamps-oncondition as long as the vehicle is
moving. The lamps are illuminated at less than 50
percent of normal intensity.
DRL MODULE REPLACEMENT
REMOVALÐXJ VEHICLES
The Daytime Running Lights (DRL) module is lo-
cated on the right fender inner panel adjacent to the
dash panel (Fig. 45).
(1) Disconnect the wire harness connector from the
module.
(2) Remove the screws that attach the module to
the fender inner panel.
(3) Remove the module from the fender inner
panel.
Fig. 43 Rectangular-Shaped Fog Lamp
Fig. 44 Fog LampÐYJ Renegade
8L - 16 LAMPSJ

WIRING DIAGRAMS YJ
ALPHABETICAL INDEX
Wiring Diagram Name Sheet Number
ABS Accelerator Sensor........................59
ABS Control Module.....................57, 58, 59
ABS Control Module Connector...................60
ABS Motor Pump Relay........................57
ABS Power Relay............................57
A/C Blower Switch............................50
A/C Compressor.............................49
A/C Low Pressure Switch.......................49
A/C Relay.................................49
A/C Thermostat..............................50
Accessory Illumination.........................32
Air Conditioning System (4.0L).................49, 50
A/C Blower Switch..........................50
A/C Compressor............................49
A/C Low Pressure Switch.....................49
A/C Relay................................49
A/C Thermostat............................50
Field Jumper..............................50
Powertrain Control Module.....................49
Anti-Lock Brake System (TEVES).............57, 58, 59
ABS Accelerator Sensor.......................59
ABS Control Module....................57, 58, 59
ABS Motor Pump Relay.......................57
ABS Power Relay...........................57
Brake Pedal Travel Sensor.....................57
Data Link Connector.........................57
Diode..................................58
Hydraulic Actuation Unit......................58
Left Front Wheel Sensor......................59
Left Rear Wheel Sensor.......................59
Power Distribution Center.....................57
Pump Motor..............................57
Pump Motor Sensor.........................57
Right Front Wheel Sensor.....................59
Right Rear Wheel Sensor......................59
Automatic Shut-Down Relay...................11, 17
Back-Up Lamps...........................51, 52
Back-Up Lamp Switch..........................7
Battery................................1,3,5
Blower Motor...............................47
Blower Resistor.............................47
Blower Switch..............................47
Body Harness Connector........................36
Brake Pedal Travel Sensor.......................57
Brake Warning Switch..........................9
Bulkhead Connector........................65, 66
Buzzer Module..............................36
Camshaft Position Sensor....................12, 18
Center High Mounted Stop Lamp..................52
Charging System 2.5L Engine...................3,4
Battery..................................3
Generator.................................3
Power Distribution Center......................4Wiring Diagram Name Sheet Number
Charging System 4.0L Engine...................5,6
Battery..................................5
Generator.................................5
Power Distribution Center......................6
Cigar Lighter...............................24
Circuit Breakers
Headlamp Switch.........................1,29
#11 (W/Wiper).....................2,10,38,39
Clock....................................45
Cluster Connector............................41
Crankshaft Position Sensor...................12, 18
Data Link Connector.....................13, 19, 57
Daytime Running Lamp Module...................28
Dimmer Switch............................1,29
Dome and Courtesy Lamps......................35
Dome Lamp..............................35
Left Courtesy Lamp.........................35
Left Front Door Jamb Switch...................35
Right Courtesy Lamp........................35
Right Front Door Jamb Switch..................35
Dome Lamp................................35
Electrically Tuned Radio with Clock.................45
Electrical Schematic of Cluster....................42
Electrical Schematic of Gauge Package..............44
Electronic Speedometer.........................42
Electronic Tachometer..........................42
Engine Coolant Temp Gauge.....................44
Engine Coolant Temperature Sensor..............15, 21
Engine Oil Pressure and Temperature System..........23
Engine Coolant Temperature Sending Unit...........23
Engine Oil Pressure Sending Unit................23
Engine Oil Pressure Gauge......................44
Engine Starter System........................2,7
Back-Up Lamp Switch........................7
Engine Starter Motor.........................7
Engine Starter Relay..........................7
Park/Neutral Position Switch....................7
Engine Wiring Connector (16 Way).................69
4-WD Command Trac Switch......................8
Field Jumper...............................50
Fog Lamp Relays............................30
Fog Lamp Switch............................30
Front End Lighting.........................25, 26
Left Fog Lamp.............................25
Left Headlamp.............................25
Left Park and Turn Signal Lamp.................25
Left Side Marker Lamp.......................25
Right Fog Lamp............................26
Right Headlamp............................26
Right Park and Turn Signal Lamp................26
Right Side Marker Lamp......................26
Front End Lighting (Canada)...................27, 28
Daytime Running Lamp Module.................28
JWIRING DIAGRAMS 8W - 73

Wiring Diagram Name Sheet Number
Left Fog Lamp.............................27
Left Headlamp.............................27
Left Park and Turn Signal Lamp.................27
Left Side Marker Lamp.......................27
Right Fog Lamp............................28
Right Headlamp............................28
Right Park and Turn Signal Lamp................28
Right Side Marker Lamp......................28
Fuel Gauge................................44
Fuel Injection Ignition System
2.5L Engine.................11, 12, 13, 14, 15, 16
Automatic Shut Down Relay....................11
Camshaft Position Sensor.....................12
Crankshaft Position Sensor.....................12
Data Link Connector.........................13
Engine Coolant Temperature Sensor...............15
Fuel Injectors.............................14
Fuel Pump Relay...........................11
Heated Oxygen Sensor.......................11
Idle Air Control Motor........................14
Ignition Coil..............................13
Intake Air Temperature Sensor..................15
MAP Sensor..............................15
Power Steering Switch.......................14
Powertrain Control Module (PCM) . . .11, 12, 13, 14, 15, 16
Throttle Position (Sensor).....................15
Vehicle Speed Sensor........................12
Fuel Injection Ignition System
4.0L Engine.................17, 18, 19, 20, 21, 22
Automatic Shut Down Relay....................17
Camshaft Position Sensor.....................18
Crankshaft Position Sensor.....................18
Data Link Connector.........................19
Engine Coolant Temperature Sensor...............21
Fuel Injectors.............................20
Fuel Pump Relay...........................17
Heated Oxygen Sensor.......................17
Idle Air Control Motor........................20
Ignition Coil..............................19
Intake Air Temperature Sensor..................21
MAP Sensor..............................21
Powertrain Control Module (PCM) . . .17, 18, 19, 20, 21, 22
Throttle Position (Sensor).....................21
Vehicle Speed Sensor........................18
Fuel Injectors............................14, 20
Fuel Pump Relay..........................11, 17
Fuel Tank System............................55
Fuel Tank Sending Unit.........................55
Fuse Application Chart........................1,2
Fuses
1 .................................2,10,37
3 ..............................1,30,34,36
4 .................................2,10,34
5 ..............................2,10,13,19
6 .................................1,30,53
7 ..............................2,10,24,46
8 ...................................1,29
9 .................................2,10,36Wiring Diagram Name Sheet Number
10 ...................................1,31
11 .............................2,10,38,39
12 ...........................2,10,47,48,50
F13 ..................................2,58
F15 ..............................2,4,6,33
F16 ............................2,4,6,8,35
Fuse Panel..............................61, 62
Gauge Package Connector.......................43
Gauges
Electronic Speedometer.......................42
Electronic Tachometer........................42
Engine Coolant Temperature Gauge...............44
Engine Oil Pressure Gauge.....................44
Fuel Gauge...............................44
Voltmeter................................44
Generator................................3,5
Hazard Signal Flasher..........................34
Headlamps.........................25, 26, 27, 28
Headlamp Switch........................1,29,30
Dimmer Switch............................29
Headlamp Switch...........................29
Heated Oxygen Sensor......................11, 17
Heated Rear Window Relay......................54
Heated Rear Window Switch.....................53
Heated Rear Window System..................53, 54
Heated Rear Window Grid.....................53
Heated Rear Window Relay....................54
Heated Rear Window Switch....................53
Timer..................................54
Heater Control Panel Illumination..................32
Heater System..............................47
Blower Motor.............................47
Blower Resistor............................47
Blower Switch.............................47
Heater/Off Switch...........................47
Horn.....................................33
Horn Brush/Slip Ring........................33
Horn Relay...............................33
Horn Switch..............................33
Hydraulic Actuation Unit........................58
Idle Air Control Motor.......................14, 20
Ignition Coil.............................13, 19
Ignition Key Warning Switch.....................36
Ignition Switch..........................2,9,10
Instrument Panel Illumination Lamps................32
Intake Air Temperature Sensor.................15, 21
Intermittent Wiper Module.......................40
Intermittent Wiper System....................39, 40
Intermittent Wiper Module.....................40
Park Switch..............................39
Washer Pump.............................39
Wiper Motor..............................39
Wiper/Washer Switch........................40
W/Wiper Circuit Breaker (5.3 Amp)...............39
Lamps
Center High Mounted Stop Lamps................52
Dome Lamp..............................35
Instrument Panel Illumination Lamp...............32
8W - 74 WIRING DIAGRAMSJ

Wiring Diagram Name Sheet Number
Left Back-Up Lamp..........................51
Left Courtesy Lamp.........................35
Left Fog Lamp..........................25, 27
Left Headlamp..........................25, 27
Left Park and Turn Signal Lamp..............25, 27
Left Side Marker Lamp....................25, 27
Left Tail, Stop and Turn Signal Lamp..............51
Right Back-Up Lamp.........................52
Right Courtesy Lamp........................35
Right Fog Lamp.........................26, 28
Right Headlamp.........................26, 28
Right Park and Turn Signal Lamp.............26, 28
Right Side Marker Lamp...................26, 28
Right Tail, Stop and Turn Signal Lamp.............52
Underhood Lamp............................8
Left Back-Up Lamps..........................51
Left Courtesy Lamp...........................35
Left Fog Lamp...........................25, 27
Left Front Door Jamb Switch.....................35
Left Front Speaker............................46
Left Halo Speaker............................46
Left Headlamp............................25, 27
Left Park and Turn Signal Lamp................25, 27
Left Side Marker Lamp......................25, 27
Left Tail, Stop and Turn Signal Lamp...............51
MAP Sensor.............................15, 21
Mercury Switch..............................8
Modules
ABS Control Module....................57, 58, 59
Buzzer Module.............................36
Daytime Running Lamp Module.................28
Intermittent Wiper Module.....................40
Motors
Blower Motor.............................47
Engine Starter Motor.........................7
Idle Air Control Motor.....................14, 20
Rear Wiper Motor..........................37
Wiper Motor...........................38, 39
Oil Pressure and Temp System...................23
Panel Lamp Dimmer Switch......................1
Panel Lamps.............................31, 32
Accessory Illumination........................32
Heater Control Panel Illumination.................32
Panel Lamp Dimmer Switch....................31
Transmission Range Illumination.................32
Park Brake Switch.............................9
Park/Neutral Position Switch......................7
Part Throttle EMCC 3-Speed Automatic Transmission.....56
Part Throttle EMCC Relay.......................56
Part Throttle EMCC Solenoid.....................56
Power Distribution Center.................1,4,6,57
Power Distribution Center Identification Cover..........67
Power Distribution Center Relays..................68
Power Steering Switch.........................14
Powertrain Control Module............11-22, 48, 49, 56
Powertrain Control Module Connector (2.5L Engine)......63
Powertrain Control Module Connector (4.0L Engine)......64
Provisions for A/C (2.5L).......................48Wiring Diagram Name Sheet Number
Radio Illumination Relay........................45
Radio System............................45, 46
Electrically Tuned Radio with Clock...............45
Left Front Speaker..........................46
Left Halo Speaker...........................46
Radio Illumination Relay......................45
Right Front Speaker.........................46
Right Halo Speaker..........................46
Rear Lighting............................51, 52
Center High Mounted Stop Lamp................52
Left Back-Up Lamp..........................51
Left Tail, Stop & Turn Signal Lamp & License Lamp....51
Right Back-Up Lamp.........................52
Right Tail, Stop & Turn Signal Lamp..............52
Rear Wiper/Washer System......................37
Rear Wiper Motor..........................37
Rear Wiper Switch..........................37
Washer Pump.............................37
Relays
A/C ....................................49
ABS Motor Pump Relay.......................57
ABS Power Relay...........................57
Automatic Shut Down Relay.................11, 17
EMCC...................................56
Engine Starter Relay..........................7
Fog Lamp Relays...........................30
Fuel Pump Relay........................11, 17
Heated Rear Window Relay....................54
Horn Relay...............................33
Radio Illumination Relay......................45
Right Back-Up Lamp..........................52
Right Courtesy Lamp..........................35
Right Fog Lamp...........................26, 28
Right Front Door Jamb Switch....................35
Right Front Speaker...........................46
Right Halo Speaker...........................46
Right Headlamp...........................26, 28
Right Park and Turn Signal...................26, 28
Right Side Marker Lamp.....................26, 28
Right Tail, Stop and Turn Signal Lamp..............52
Seat Belt/Ignition Key Warning Buzzer...............36
Seat Belt Switch.............................36
Sensors
ABS Accelerator Sensor.......................59
Brake Pedal Travel Sensor.....................57
Camshaft Position Sensor...................12, 18
Crankshaft Position Sensor..................12, 18
Engine Coolant Temperature Sensor............15, 21
Heated Oxygen Sensor.....................11, 17
Intake Air Temperature Sensor................15, 21
MAP Sensor...........................15, 21
Pump Motor Sensor.........................57
Throttle Position (Sensor)...................15, 21
Vehicle Speed Sensor.....................12, 18
Wheel Sensors............................59
Speakers..................................46
Speedometer...............................42
JWIRING DIAGRAMS 8W - 75

Wiring Diagram Name Sheet Number
Splices
Splice A6................................30
Splice A11..............................4,6
Splice A142............................14, 20
Splice A142-1............................3,5
Splice B15...............................58
Splice E2.............................31, 45
Splice F15...............................58
Splice F30.............................24, 45
Splice G5................................10
Splice G7.............................12, 18
Splice G19...............................58
Splice G50............................13, 19
Splice K4.............................15, 21
Splice K4-1............................12, 18
Splice K6.............................15, 21
Splice K7.............................12, 18
Splice K7-1...............................12
Splice L1................................51
Splice L3................................28
Splice L4................................28
Splice L7................................29
Splice L7-1............................26, 28
Splice L7-2...............................51
Splice L39.............................26, 28
Splice L39-1..............................30
Splice M1................................35
Splice M1-1............................8,35
Splice M2................................35
Splice Z1................................32
Splice Z1-2...............................31
Splice Z1-3...............................32
Splice Z1-4...............................54
Splice Z1-5............................51, 54
Splice Z1-6.........................36, 51, 54
Splice Z1-7............................11, 17
Splice Z1-8...............................8
Splice Z1-9............................26, 28
Splice Z1-10.........................25, 27, 37
Splice Z2................................55
Splice Z12...............................57
Starter Relay................................7
Starter System, Engine..........................7
Steering Column Connector......................70
Stop Lamp Switch............................34
Stop/Turn and Hazard Flasher Systems..............34
Hazard Signal Flasher........................34
Stop Lamp Switch..........................34Wiring Diagram Name Sheet Number
Turn/Hazard Switch Assembly...................34
Turn Signal Flasher..........................34
Switches
A/C Blower Switch..........................50
A/C Low Pressure Switch.....................49
Back-Up Lamp Switch........................7
Blower Switch.............................47
Brake Warning Switch.........................9
Dimmer Switch..........................1,29
Door Jamb Switch..........................35
4-WD Drive Switch..........................8
Fog Lamp Switch...........................30
Headlamp Switch.........................1,29
Heated Rear Window Switch....................53
Heater/Off Switch...........................47
Horn Switch..............................33
Ignition Key Warning Switch....................36
Ignition Switch...........................2,9
Mercury Switch.............................8
Panel/Lamp Dimmer Switch..................1,31
Park Brake Switch...........................9
Park/Neutral Position Switch....................7
Power Steering Switch.......................14
Rear Wiper Switch..........................37
Seat Belt Switch...........................36
Stop Lamp Switch..........................34
Washer Switch..........................38, 40
Wiper/Washer Switch......................38, 40
Tachometer................................42
Throttle Position (Sensor)....................15, 21
Timer....................................54
Transmission Range Illumination...................32
Turn/Hazard Switch Assembly....................34
Turn Signal Flasher...........................34
Underhood Light..............................8
Vehicle Speed Sensor.......................12, 18
Voltmeter..................................44
Washer Pump.........................37, 38, 39
Washer Switch...........................38, 40
Wheel Sensors..............................59
Windshield Wiper System.......................38
Washer Pump.............................38
Washer Switch............................38
Wiper Motor..............................38
Wiper/Washer Switch........................38
W/Wiper Circuit Breaker.......................38
Wiper Switch.............................38
8W - 76 WIRING DIAGRAMSJ

WIRING DIAGRAMS XJ
INDEX
Wiring Diagram Name Sheet Number
A/C Compressor Clutch Relay...................3,69
A/C Compressor Clutch........................69
A/C Heater Blower Motor.......................70
A/C Low Pressure Switch.......................69
A/C Mode Select Switch........................70
A/C Thermostat..............................69
ABS Diode.................................33
ABS Green Indicator Lamp......................57
ABS Hydraulic Actuation Unit.....................33
ABS #1 Relay.............................3,31
ABS #2 Relay.............................3,31
ABS Pump Motor............................30
ABS Red Indicator Lamp.......................57
Ambient Temperature Sensor.....................53
Antenna...................................71
Antenna Mast...............................71
Anti-Lock Brake Control Module Connector...........109
Anti-Lock Braking System...............29,30,31,32,33
ABS Diode...............................33
ABS Relays...............................31
Anti-Lock Pump Motor.......................30
Anti-Lock Brake System Module.........29,30,31,32,33
Data Link Connector.........................32
G Sensor................................30
Hydraulic Actuation Unit......................33
Left Front Wheel Sensor......................29
Left Rear Wheel Sensor.......................29
Pedal Travel Sensor.........................30
Right Front Wheel Sensor.....................29
Right Rear Wheel Sensor......................29
Anti-Lock Brake System Module...........29,30,31,32,33
Anti-Lock Pump Motor.........................30
Anti-Lock Relay..............................31
Ashtray Lamp...............................48
Automatic Shut Down Relay..................3,12,17
Automatic Transmission Control System (2.5L).........27
Front Axle Lock-Up Switch.....................27
EMCC Relay..............................27
EMCC Solenoid............................27
Back-Up Lamp Switch.........................25
Ballast Resistor..............................89
Battery..................................1,7,8
Blower Motor.............................68,70
Blower Resistors...........................68,70
Blower Switch............................68,70
Body Ground...............................44
Brake Warning Switch.........................67
Bulkhead Disconnect.................101,102,103,104
Camshaft Position Sensor.....................11,20
Cargo Lamp................................50
Center High Mounted Stop Lamp..................98
Charging System 2.5L..........................5
Generator.................................5Wiring Diagram Name Sheet Number
Charging System 4.OL..........................6
Generator.................................6
Chime Module..............................74
Ignition Key Warning Switch....................74
Seat Belt Switch...........................74
Cigar Lighter...............................37
Cigar Lighter Lamp...........................48
Circuit Breakers
In Line Circuit Breaker........................2
Trailer Tow In-Line Circuit Breaker................97
Windshield Wiper Circuit Breaker...............63,64
Connectors
Anti-Lock Brake Control Module Connector.........109
Data Link Connector...................16,18,25,32
Instrument Cluster Connector................55,108
Main Body Connectors.......................112
Power Mirror Connector......................110
Powertrain Control Module Connector.............111
Remote Keyless Entry Module Connector...........114
Steering Column Connector...................106
Telltale Connector........................56,107
Trailer Tow Connector........................93
Transmission Control Module Connector...........105
Cooling Fan Relay...........................3,23
Courtesy Lamp..............................49
Crankshaft Position Sensor....................11,20
Data Link Connector....................16,18,25,32
Daytime Running Lamp Module (DRL)...............38
Daytime Running Lamp System...................38
Diode,ABS.................................33
Distributor Ignition Coil.......................16,18
Dome Lamp................................51
Dome And Courtesy Lamps..................49,50,51
Cargo Lamp..............................50
Dome Lamp..............................51
Dome/Reading Lamp.........................51
Glove Box Lamp...........................49
Left Courtesy Lamp.........................49
Reading Lamp.............................51
Right Courtesy Lamp........................49
Vanity Lamps.............................51
Dome Reading Lamp..........................51
Door Jamb Switch System....................75,76
Left Front Door Jamb Switch...................75
Left Rear Door Jamb Switch...................75
Liftgate Switch............................76
Right Front Door Jamb Switch..................76
Right Rear Door Jamb Switch..................76
EMCC Relay...............................3,27
EMCC Solenoid..............................27
Engine Block Coolant Heater/Cigar Lighter............37
Cigar Lighter..............................37
Engine Block Coolant Heater....................37
JWIRING DIAGRAMS 8W - 149

Wiring Diagram Name Sheet Number
Engine Block Heater.........................37
Wall Plug................................37
Engine Coolant Temperature Sending Unit.............24
Engine Coolant Temperature Sensor..............14,19
Engine Coolant Temperature Switch.................24
Engine Oil Pressure and Temperature System..........24
Engine Coolant Temperature Switch...............24
Engine Oil Pressure Sending Unit................24
Engine Oil Pressure Switch....................24
Engine Starter Motor..........................7,8
Engine Starter Relay.........................3,7,8
Engine Starter System (2.5L)......................7
Battery..................................7
Engine Starter Motor.........................7
Engine Starter Relay..........................7
Park/Neutral Position Switch....................7
Engine Starter System (4.OL).....................8
Battery..................................8
Engine Starter Motor.........................8
Engine Starter Relay..........................8
Fan Control Relay............................23
Fog Lamp Illumination.......................42,47
Fog Lamps..............................39,40
Fog Lamp Switch............................42
Front Axle Switch..........................26,27
Front Door Lock and Window Switch Functions.........87
Front End Lighting..........................39,40
High Beam Relay...........................40
Left Fog Lamp.............................39
Left Headlamp.............................39
Left Park/Turn Signal Lamp....................39
Left Side Marker Lamp.......................39
Park Lamp Relay...........................39
Right Fog Lamp............................40
Right Headlamp............................40
Right Park/Turn Signal Lamp...................40
Right Side Marker Lamp......................40
Front Washer Pump.........................63,64
Front Wiper Motor..........................63,64
Front Wipers/Washer (Intermittent).................64
Front Washer Pump.........................64
Front Wiper Motor..........................64
Wiper/Washer Switch........................64
Intermittent Wiper Module.....................64
Front Wiper/Washer (Standard)....................63
Front Washer Pump.........................63
Front Wiper Motor..........................63
Wiper/Washer Switch........................63
Fuel Injection Ignition System (2.5L)......11,12,13,14,15,16
Automatic Shut Down Relay....................12
Camshaft Position Sensor.....................11
Crankshaft Position Sensor.....................11
Data Link Connector.........................16
Distributor Ignition Coil.......................16
Engine Coolant Temperature Sensor...............14
Fuel Pump Relay...........................12
Heated Oxygen Sensor.......................13
Idle Air Control Motor........................15Wiring Diagram Name Sheet Number
Injectors.................................15
Intake Air Temperature Sensor..................14
MAP Sensor..............................14
Power Steering Pressure Switch.................15
Powertrain Control Module...........11,12,13,14,15,16
Throttle Position Sensor......................14
Vehicle Speed Sensor........................11
Fuel Injection Ignition System (4.OL)......17,18,19,20,21,22
Automatic Shut Down Relay....................17
Camshaft Position Sensor.....................20
Crankshaft Position Sensor.....................20
Data Link Connector.........................18
Distributor Ignition Coil.......................18
Engine Coolant Temperature Sensor...............19
Fuel Pump Relay...........................17
Heated Oxygen Sensor.......................21
Idle Air Control Motor........................22
Intake Air Temperature Sensor..................19
Injectors.................................22
MAP Sensor..............................19
Powertrain Control Module...........17,18,19,20,21,22
Throttle Position Sensor......................19
Vehicle Speed Sensor........................20
Fuel Injector(s)............................15,22
Fuel Pump Relay.........................3,12,17
Fuel Tank Level Gauge Sending Unit................90
Fuel Tank System..........................89,90
Ballast Resistor............................89
Fuel Tank Level Gauge Sending Unit..............90
Full Time Indicator Lamp.....................57,58
Fuse Application Chart.........................1,2
Fuse Panel..............................99,100
Fuses
F1 ....................................3,4
F2 ................................3,4,12,17
F3 ....................................3,4
F4 ....................................3,4
F5 ....................................3,4
F6 ....................................3,4
F7 ....................................3,4
F8 ....................................3,4
F9 ....................................3,4
F10 ...................................3,4
F11 ...................................3,4
F12 ...................................3,4
F13 ...................................3,4
F14 ...................................3,4
F15 ...................................3,4
F16 ...................................3,4
Fuse #1..............................2,10,65
Fuse #2.............................2,9,37,71
Fuse #4................................1,41
Fuse #5..........................2,63,64,68,70
Fuse #7..............................2,10,32
Fuse #8..............................2,45,66
Fuse #9...............................1,4,49
Fuse #11.............................1,43,83
Fuse #13.............................1,43,83
8W - 150 WIRING DIAGRAMSJ