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Online Manual Jeep > Jeep Cherokee XJ > 1984 - 1991 > ELECTRICAL COMPONENT LOCATOR

ELECTRICAL COMPONENT LOCATOR

1988 Jeep Cherokee

1988 ELECTRICAL COMPONENT LOCATOR Jeep Electrical Component Locations

Cherokee, Comanche & Wagoneer COMPONENT LOCATOR CHARTS

A/C Clutch Relay On right front wheelwell.

A/C-Heater Blower Relays

Automatic Load Leveling Relay

Under right side of dash, on evaporator housing.

On load level compressor bracket.

B+ Latch Relay

Choke Relay

Door Lock/Unlock Relays

On center of right front wheelwell.

On right front wheelwell.

Under dash, behind right kick panel.


Fog Light Relay

Behind right headlight, on wheelwell.

Fuel Pump Relay Horn Relay

Load Swap Relay

On right front wheelwell.

Taped to wiring harness, above fuse block.

On front of right front wheelwell.


Power Antenna Relay

Under right side of dash.

Rear Window Defogger Relay

Under instrument panel, to right of steering column.


Rear Wiper Relay

In tailgate, next to wiper motor.





Starter Relay (Graphic 1)

Behind right headlight, on wheelwell.


Starter Relay (Graphic 2)

Behind right headlight, on wheelwell.



Timer Delay Relay

Trailer Towing Relays,

Brake/Stop Light Relay (Cherokee)

Above starter relay, behind battery.

Above left rear wheelwell.


Left Turn Signal Relay

Brake/Stop Light Relay (Cherokee)

Right Turn Signal Relay

Above left rear wheelwell.

Above left rear wheelwell.

CIRCUIT PROTECTION DEVICES


Component

Circuit Breakers Power Accessories

Power Window

Trailer Towing Windshield Wiper Fuse Block

Component Location

In fuse block. In fuse block.

Above left rear wheelwell. On side of fuse block. Under left side of dash.

Fusible Links (Graphic 1)

At starter relay.

Fusible Links (Graphic 2)

At starter relay.

In-Line Fuses




A/C Signal Fuse

Near diode modules or above left front wheelwell.


Fuses A & B

Taped to engine wiring harness, near thermo-electric

switch.



Fuse C Taped to engine wiring harness, by alternator.

Fuse D Taped to engine wiring harness, near power steering switch.

Cruise Control Under left side of dash, near brake pedal.

Radio Under center of dash, behind radio.

CONTROL UNITS

Component

Audio Alarm Module

Cruise Control Regulator Module

Component Location

On side of fuse block.

Under dash, above brake pedal.





Elect. Control Unit (ECU)

Under dash, above accelerator pedal.

Ignition Control Module Intermittent Wiper Module Keyless Entry Receiver

In engine compartment, on right wheelwell.

Under left side of dash, above brake pedal.

Between sun visors.


Maint. Reminder Module

Sentinel Light Module

Under dash, to right of steering column.

Under left side of dash, near headlight switch.

System Sentry Control Module

Under dash, to right of steering column.


Transmission Control Module

Under right side of instrument panel.

MOTORS

Component

Component Location



A/C-Heater Blower Motor

In evaporator housing.

Automatic Load Level Compressor

In right rear corner of engine compartment.


Idle Speed Actuator (ISA) Motor

Power Door Lock Motor Power Window Motor

Rear Washer Motor Rear Wiper Motor

On right side of throttle body.

Behind trim panel in door.

Behind trim panel, in center of door.

In left front corner of engine compartment.

Behind trim panel, in upper center of tailgate.




Windshield Washer Motor

On windshield washer reservoir.



Windshield Wiper Motor

Under left side of cowl panel grille.

SENDING UNITS & SENSORS

Component

Automatic Load Leveling Sensor

Brake Pad Wear Sensors

Coolant Temp. Sending Unit/Switch

4-Cyl.

6-Cyl. Coolant Temperature Sensor

Component Location

On top of left rear axle.

In both inner front brake pads.

On top left rear of cylinder head.

On top front of cylinder head.

4-Cyl. (Graphic 1)

In left rear side of intake manifold.

4-Cyl. (Graphic 2) 6-Cyl. Engine Speed Sensor

In left rear side of intake manifold.

Left side of engine block, under intake manifold




Automatic Transmission

On left side of torque converter clutch.


Manual Transmission

Fluid Level Sensors Brake Fluid

On left side of bellhousing. In master cylinder.

Engine Coolant Engine Oil Front/Rear Axles Power Steering

Transfer Case Transmission

In coolant overflow bottle.

In oil pan.

On front/rear of differential.

In power steering pump reservoir.

In rear portion of transfer case.

On fill plug (M/T) or dipstick (A/T).


Windshield Washer

On bottom of windshield washer reservoir.


Fuel Gauge Sending Unit

In fuel tank.

Knock Sensor

On lower front of engine.


Manifold Absolute Pressure (MAP) Sensor

In engine compartment, on center of firewall.

Manifold Air Temperature (MAT) Sensor (Graphic 1)

On upper rear of intake manifold.

Manifold Air Temperature (MAT) Sensor (Graphic 2)

On upper rear of intake manifold.


Oil Pressure Sending Unit/Switch

On right side of block, near distributor.

Oxygen Sensor (Graphic 1)

In exhaust manifold, near exhaust pipe flange.


Oxygen Sensor (Graphic 2) Road Speed Sensor

In exhaust manifold, near exhaust pipe flange.

Under instrument cluster, in speedometer cable.

Throttle Position Sensor (TPS) (Graphic 1)

On throttle body.


Throttle Position Sensor (TPS) (Graphic 2)

On throttle body.

SOLENOIDS & SOLENOID VALVES

Component

Air Diverter Solenoid

Component Location

On right rear side of engine compartment.


EGR/Evaporator

Canister Solenoid

Idle Step-Up Solenoid

On middle of right front wheelwell.

On top fuel injection pump bracket.

Mixture Control Solenoid Shift Kicker Solenoid

On carburetor, near fuel line.

On left front wheelwell.

SWITCHES

Component

Component Location





A/C Low Pressure Switch

On top left side of radiator.

Automatic Load Leveling Sw.

Back-Up Light Sw. (Man. Trans.)

Back-Up/Neutral Sw. (Auto. Trans.)

Brake/Stop Light (Cruise) Switch

On compressor bracket, in engine compartment.

On left side of transmission case.

On left side of transmission case.

On brake pedal bracket.



Brake Warning Switch

Closed Throttle (Idle) Switch Command Track Switch Parking Brake Switch

On brake pressure differential valve, below master cylinder.

An integral part of ISA motor. On left side of transmission.

Under center console, at base of parking brake lever.

Power Steering

Switch (4-Cyl.)

Seat Belt Switch Select Trac Switch

On left side of power steering pump.

In drivers seat belt buckle. On left side of transmission.

WOT Switch

On bracket, with ISA motor.


4WD Indicator Light Switch

In right rear corner of engine compartment.

MISCELLANEOUS COMPONENTS

Component

A/C Blocking Diode

A/C Clutch Diode

Component Location

Taped to engine wiring harness, above left wheelwell.

On A/C compressor.


A/C-Heater Blower Motor Resistors

Under right side of dash, on evaporator housing.

A/C Thermostat

Cruise Control Servo

Under right side of dash, on evaporator housing.

In engine compartment, on right wheelwell.




Diagnostic Connectors

On center of firewall or on left side of engine compartment.



Load Swap Diode Modules

In engine wiring harness, near alternator.