engine JEEP XJ 1995 Service And Repair Manual

In the M2 position, the blower motor supplies volt-
age to the resistor block on circuit C6. From circuit
C6 voltage flows through two resistors to the blower
motor on circuit C1.
In the HIGH position, the blower motor switch con-
nects directly to the blower motor on circuit C1. Volt-
age does not pass through the resistor block.
Circuit Z1 provides ground for the blower motor.
AIR CONDITIONING OPERATION
When the A/C-heater control switch is moved to an
A/C position or the defrost position, the Powertrain
Control Module (PCM) receives the A/C select signal
on circuit C90. Circuit C90 connects to cavity 28 of
the PCM.
Circuit also C90 splices to the low pressure switch
and to supply battery voltage to the coil side of the
A/C compressor clutch relay. If the low pressure
switch is closed, circuit C90 connects to circuit C21.
Circuit C21 supplies battery voltage to the A/C cy-
cling switch. Circuit C91 from the A/C cycling switch
provides the A/C request signal to the PCM. Circuit
C91 connects to cavity 27 of the PCM. Circuit Z1 pro-
vides ground for the A/C cycling switch.
After receiving the A/C request signal, the PCM
supplies ground for the A/C compressor clutch relay
on circuit C13. Circuit F12 from fuse 11 in the PDC
supplies battery voltage to the contact side of the A/C
compressor clutch relay. When the PCM grounds the
relay, the contacts close and connect circuit F12 to
circuit C3. Circuit C3 feeds the A/C compressor
clutch.
Also, after receiving the A/C request signal, the
PCM supplies ground for the coil side of the radiator
fan relay on circuit C27 (4.0L engine). Circuit C27
connects to cavity 31 of the PCM. Circuit F12 sup-
plies battery voltage to the coil side of the relay.
When the PCM grounds the coil side of the radia-
tor fan relay, the contacts close and connects circuit
F141 from fuse 4 in the PDC to circuit C25. Circuit
C25 feeds the radiator fan motor. Circuit Z1 provides
ground for the motor.
HELPFUL INFORMATION
Circuit A14 from PDC fuse 2 powers circuit F141
through fuse 15 in the PDC.
RADIATOR FAN RELAY AND MOTOR
In the START or RUN positions, the ignition
switch connects circuit A1 from fuse 6 in the Power
Distribution Center (PDC) to circuit A21. Circuit A21
powers a bus bar in the PDC that feeds circuit F12
through fuse 11. Circuit F12 feeds the coil side of the
radiator fan relay (4.0L engine).
The PCM supplies ground for the coil side of the
radiator fan relay on circuit C27 (4.0L engine). Cir-
cuit C27 connects to cavity 31 of the PCM.
When the PCM grounds the coil side of the radia-
tor fan relay, the contacts close and connects circuit
F141 from fuse 15 in the PDC to circuit C25. Circuit
C25 feeds the radiator fan motor. Circuit Z1 provides
ground for the radiator fan motor.
HELPFUL INFORMATION
Circuit A14 from PDC fuse 2 powers circuit F141
through fuse 15 in the PDC.
DIAGRAM INDEX
Component Page
A/C Compressor Clutch.....................8W-42-4
A/C Compressor Clutch Relay................8W-42-4
A/C Cycling Switch.......................8W-42-4
A/C Low Pressure Switch...................8W-42-4
A/C Mode Select Switch....................8W-42-5
Blower Motor...........................8W-42-3
Blower Motor Switch......................8W-42-3
Blower Motor Resistor.....................8W-42-3
Fuse 2 (PDC)...........................8W-42-5
Fuse 5 (Fuse Block).....................8W-42-3, 5
Fuse 6 (PDC).........................8W-42-3, 5
Fuse 11 (PDC)..........................8W-42-4
Fuse 15 (PDC)..........................8W-42-5
Heater Mode Switch.......................8W-42-3
Ignition Switch......................8W-42-3, 4, 5
Powertrain Control Module..................8W-42-4
Radiator Fan Motor.......................8W-42-5
Radiator Fan Relay.......................8W-42-5
8W - 42 - 2 8W-42 AIR CONDITIONING/HEATERÐXJ VEHICLESJ

CONNECTOR LOCATIONS
GENERAL INFORMATION
This section provides illustrations identifying com-
ponent and connector locations in the vehicle. A con-nector index is provided. Use the wiring diagrams in
each section for connector number identification. Re-
fer to the index for the proper figure number.
CONNECTOR LOCATIONS
Connector # Color Location Fig.
C101......BK ...Front of Left Fender Side Shield . . .1, 2
C102......BK ...Bottom Right of Radiator Closure
Panel....................8
C103......BK ...Near Left Side of Radiator......2,8
C104......BK ...Left Fender Side Shield
C105......BK ...Bottom of Left Fender Side Shield . . .2
C106......BK ...Left Fender Side Shield, Near PCM .1, 2
C107......BK ...OnABSPump Motor...........2
C108......BK ...Right Rear Corner of Engine
Compartment.............2,3
C109......BK ...Center of Dash Panel.........1,4
C110......BK ...Center of I.P., Below ABS Control
Module...............13, 14
C111......BK ...Left of Steering Column.........14
C112......BK ...AtABSControl Module.........13
C113......BK ...InHarness, Near ABS Control
Module.................13
C114......BK ...Center of I.P., Below ABS Control
Module.................14
C115......BK ...Near ABS Control Module.......14
C116......BK ...Below ABS Control Module.......14
C117......BK ...Rear of Intake Manifold........6,7
C118......BK ...OnThrottle Body............6,7
C119......BK ...Bottom Left Front of Cylinder
Block..................6,7
C120......BK ...OnThrottle Body............6,7
C121......GY ...Rear of Intake Manifold........6,7
C122......BK ...AtThermostat Housing........6,7
C123......BK ...Injector No. 1..............6,7
C124......BK ...Injector No. 2..............6,7
C125......BK ...Injector No. 3..............6,7
C126......BK ...Injector No. 4..............6,7
C127......BK ...Injector No. 5................7
C128......BK ...Injector No. 6................7
C129......GN ...Center of Dash Panel.........1,4
C130......BK ...Below Brake Master Cylinder.....1,2
C131......BK ...Distributor................6,7
C132......GN ...Lower Right Side of I.P.
C133......BK ...Right of Blower Motor..........4
C134......GY ...Right of Blower Motor..........4
C135......GY ...Right of Blower Motor..........4
C136......BR ...OnWasher Fluid Reservoir......1,4
C137......BK ...Under Side of Hood..........1,4
C138......BK ...Left of Blower Motor...........4
C139......BK ...Bottom of Washer Fluid Reservoir .3, 4
C140......BK ...Bottom of Washer Fluid Reservoir .3, 4
C141......BK ...InFront of Washer Fluid Reservoir .1, 4
C142......BK ...Between PDC and Blower Motor . .1, 4Connector # Color Location Fig.
C143......BK ...Bottom Front of Right Fender
Side Shield..............1,3
C144......BK ...Front of Right Fender Side Shield . .1, 3
C145......BK ...Front of Right Fender Side Shield . .1, 3
C146......BK ...Right Side of Grille Opening.....1,3
C147......BK ...Below Distributor..............7
C148......BK ...Right Side of Engine..........6,7
C149......BK ...Rear of Generator...........5,6
C150......BK ...Right Rear of Engine...........7
C151......BK ...Right Fender Side Shield.......1,4
C152......GY ...Behind Power Steering Pump......6
C153......BK ...Right Side of Transmission.......21
C154......BK ...Left Side of Radiator Closure Panel . .8
C155......BK ...Left Rear of Radiator Closure Panel . .8
C156......BK ...Behind Lens.................8
C157......BK ...Behind Left Headlamp...........8
C158......BK ...Behind Lens.................8
C159......BK ...Center of Grille Opening.........8
C160......BK ...Behind Lens.................8
C161......BK ...Behind Right Headlamp..........8
C162......BK ...Behind Lens.................8
C163......BK ...Center of Grille Opening.........8
C164......BK ...Right Center of Engine Compartment
C201......BK ...Below Left Side of I.P.........9,14
C202......LG ...Behind Left Kick Panel.........14
C203......BK ...Behind Left Kick Panel.........14
C204......GY ...Behind Left Kick Panel.........14
C205......BK ...Bottom Right of I.P............12
C206......BK ...Bottom Right of I.P............12
C207......BK ...Behind Headlamp Switch........10
C208......BK ...Bottom Right of I.P............12
C209......BK ...OnI.P.Right of Steering Column . . .10
C210......BK ...OnI.P.Right of Steering Column . . .10
C211......BK ...Rear of Radio...............11
C212......BR ...Center of I.P.................10
C213......BK ...Center of I.P.................10
C214......GY ...Right Side of I.P..............13
C215......BK ...Right Side of I.P..............13
C216......GY ...Glove Box.................10
C217......BK ...Bottom Right of I.P............11
C218......RD ...Right Side of I.P...........13, 17
C219......BK ...Bottom Right of I.P............11
C220......BK ...Right Side of I.P..............13
C221......BK ...Right Corner of I.P............13
C222......LG ...Right Corner of I.P............13
C223......BK ...Right Front of Steering Column....14
C224......BK ...Right Front of Steering Column....14
C225......NAT...Below Steering Column.........14
J8W-90 CONNECTOR LOCATIONSÐXJ VEHICLES 8W - 90 - 1

Connector # Color Location Fig.
C226......BK ...Left Kick Panel
C227......BK ...OnI.P.Right of Steering Column . . .10
C228......BK ...Left Side of Steering Column.....14
C229......BK ...TopofBrake Pedal Arm.........13
C230......BK ...Left Side of I.P...............12
C231......BK ...Center of I.P.................10
C232......GY ...Left Side of I.P...............12
C233......BK ...Left Side of I.P...............12
C234......BK ...Rear of I.P. Cluster............10
C235......NAT...Rear of I.P. Cluster............10
C236......BK ...OnI.P.Right of Steering Column . . .10
C237......BK ...OnI.P.Right of Steering Column . . .10
C238......BK ...OnI.P.Left of Steering Column....10
C239......RD ...OnI.P.Left of Steering Column....10
C240......BK ...Left Front Door..............17
C241......BK ...Center of I.P.
C242......BK ...Center Bottom of I.P..........9,11
C243......BK ...Center Left of I.P.
C301......DG ...Behind Left Kick Panel
C302......BK ...Near Floor Console
C303......BK ...Bottom Right of Drivers Seat . . .15, 23
C304......BK ...Bottom of Drivers Sear.........15
C305......BK ...Behind Right Kick Panel........17
C306......BK ...Left B Pillar................18
C307......BK ...Near Fuel Tank..............15
C308......BK ...InLiftgate.................24
C309......BK ...Under Rear of Roof Liner........20
C310......BK ...Left Rear Quarter Panel.........20
C311......BK ...Left Rear Quarter Panel.........20
C312......BK ...Left Rear Quarter Panel.........20
C313......BK ...InLiftgate.................24
C314......NAT...InLeft Rear Door.............18
C315......BK ...InLeft Rear Door.............18
C316......RD ...InLeft Rear Door.............18
C317......BK ...Behind Left Kick Panel.......15, 17
C318......RD ...Behind Left Kick Panel.......15, 17
C319......BK ...Under Floor Console...........15
C320......GY ...Under Right Rear Seat.........18
C321......BK ...Behind Right Kick Panel........17
C322......DG ...AtDome Lamp
C323......BK ...InLiftgate.................24
C324......BK ...Right Rear Quarter Panel........20
C325......NAT...InRight Rear Door............18
C326......BK ...InRight Rear Door............18
C327......BK ...InRight Rear Door............18
C328......BK ...InRight B Pillar..............18
C329......BK ...InRight Front Door...........17
C331......BK ...InRight Front Door...........17
C332......BK ...InRight Front Door...........17
C333......BK ...InRight Front Door...........17
C334......BK ...InRight Front Door...........17
C335......BK ...InLeft Front Door............17
C336......BK ...InLeft Front Door............17
C338......BK ...InLeft Front Door............17
C339......BK ...InLeft Front Door............17
C340......BK ...InLeft Front Door............17
C341......BK ...InLeft Front Door............17Connector # Color Location Fig.
C342......BK ...Front Center of Roof Liner.......16
C343......BK ...Behind Overhead Console.......16
C344......BK ...Behind Doom Lamp...........16
C345......BK ...Inleft Rear Corner of Vehicle.....20
C346......BK ...Left Rear Quarter Panel.........20
C347......BK ...Left Rear Quarter Panel.........20
C348......BK ...Left Rear Quarter Panel.........20
C349......BK ...Left Rear Quarter Panel.........20
C350......BK ...InLiftgate.................24
C351......BK ...Left Rear Quarter Panel.........22
C352......BK ...Floor Pan, Near Drivers Seat
C353......BK ...InLiftgate.................25
C354......BK ...Below Left Rear Seat..........19
C355......RD ...Below Left Rear Seat..........19
C356......BK ...Below Left Rear Seat..........19
C357......BK ...OnTransmission.............21
C358......GN ...InLiftgate.................24
C401......BK ...Behind PRNDL..............15
C402......BK ...InFloor Console
C403......BK ...Rear of Radio...............11
C404......BK ...Rear of Transmission (2WD)......21
C404......BK ...Rear of Transfer Case (4WD).....21
C405......BK ...Behind Cargo Lamp...........20
C406......YL ...InLiftgate.................24
C407......BK ...OnTransfer Case.............21
C408......BK ...Side of Transmission
C409......BK ...Right of Radiator............1,3
C410......BK ...InLeft Rear Door
C411......BK ...InLeft Front Door
C412......BK ...InRight Door
C413......BK ...InRight Rear Door
C414......BK ...OnTransfer Case.............21
C415......BK ...Near Underhood Lamp
C416......BK ...Behind Lens
C417......BK ...Behind Lens
C418......YL ...Behind Lens
C419......YL ...Behind Lens
C420......BK ...Behind Lens
C421......BK ...Behind Lens
C422......BK ...Behind Lens
C423......BK ...Behind Lens
C424......BK ...Side of Drivers Seat...........23
C425......BK ...Below Drivers Seat............23
C426......BK ...Behind Lens................25
C427......BK ...Behind Lens................25
C428......BK ...AtAshReceiver..............12
C429......BK ...InLiftgate.................24
C430......BK ...InLiftgate.................24
G101............Near Battery.................5
G102............Near Battery.................5
G103............Right Front Side of Engine, Behind
Generator.................5
G104............Left Fender Side Shield, Behind
PCM ..................1,2
G105............Left Fender Side Shield, Behind
PCM ..................1,2
G106............Right Rear of Engine..........6,7
G107............Right Rear of Engine..........6,7
8W - 90 - 2 8W-90 CONNECTOR LOCATIONSÐXJ VEHICLESJ

Connector # Color Location Fig.
G108............Right Rear of Engine..........6,7
G109............Right Front Side of Engine,
Behind Generator............5Connector # Color Location Fig.
G201............Below Headlamp Switch.........9
G301............Left Rear Quarter Panel.........20
J8W-90 CONNECTOR LOCATIONSÐXJ VEHICLES 8W - 90 - 3

Fig. 1 Engine Compartment Wiring ConnectorsÐ2.5L
8W - 90 - 4 8W-90 CONNECTOR LOCATIONSÐXJ VEHICLESJ

Fig. 2 Engine Compartment Wiring ConnectorsÐ4.0L
J8W-90 CONNECTOR LOCATIONSÐXJ VEHICLES 8W - 90 - 5

Fig. 3 Engine Compartment Wiring Connectors
8W - 90 - 6 8W-90 CONNECTOR LOCATIONSÐXJ VEHICLESJ

Fig. 4 Engine Compartment Wiring ConnectorsÐRight Side, 4.0L
J8W-90 CONNECTOR LOCATIONSÐXJ VEHICLES 8W - 90 - 7

Fig. 6 Engine Wiring ConnectorsÐ2.5L Engine
J8W-90 CONNECTOR LOCATIONSÐXJ VEHICLES 8W - 90 - 9

Fig. 7 Engine Wiring ConnectorsÐ4.0L Engine
8W - 90 - 10 8W-90 CONNECTOR LOCATIONSÐXJ VEHICLESJ