ELECTRICAL COMPONENT LOCATOR 1989-90 ISUZU ELECTRIC COMPONENT LOCATOR

Isuzu Trooper LS 1990 - BUZZERS, RELAYS & TIMERS

Isuzu Trooper LS 1990 BUZZERS, RELAYS & TIMERS LOCATION

Component	Location
A/C Compressor Relay (2.6L)	On left fender panel, in fuse/relay block.
A/C Compressor Relay (2.8L)	On right side of engine compartment. See Fig. 1.
A/C Cut-Out Relay No. 1	Below left side of dash, to right of steering column.
A/C Cut-Out Relay No. 2	On right side of engine compartment, under relay bracket.
A/C-Heater Blower Motor Relay	In left front corner of engine compartment.
Blower Cut-Out Relay	Behind left side of instrument panel, on heater plenum housing.
Fuel Pump Relays	On left fender panel, in fuse/relay block. See Fig. 1.
Headlight Relays	On right side of engine compartment, under relay bracket.
Heater High Speed Blower Relay	Below left side of dash, to right of column.
Main Relay	On right rear corner of engine compartment, under relay bracket. See Fig. 1.
Power Window Relay	On left fender panel, in fuse/relay block.
Rear Defogger Relay	On right side of engine compartment, under relay bracket.
Seat Belt Timer	At left side of dash, behind speedometer.
Starter Relay (2.6L)	In fuse/relay block, on left side of engine compartment.
Starter Relay (2.8L)	On right side of engine compartment, on relay bracket.
Turn Signal/Hazard Flasher	Under left side of dash, on brake pedal support.

Isuzu Trooper LS 1990 CIRCUIT PROTECTION DEVICES LOCATION

Component	Location
Fuse/Relay Block	On left inner fender panel. See Fig. 1.
Fusible Link Box	Next to battery.
Fusible Links (2.6L)	In front of battery, and on fuse/relay block.

Isuzu Trooper LS 1990 CONTROL UNITS LOCATION

Component	Location
Cruise Control Module (2.8L)	On right side of glove box.
Door Lock Controller	On left kick panel.
EGR Control Module (2.8L)	On right rear corner of engine, next to distributor.
Elapsed Timer Module (2.8L)	Under right side of dash. See Fig. 1.
Electronic Control Module (ECM)	Under center console. See Fig. 1, Fig. 2 & Fig. 3 .
Electronic Trans. Control Unit (2.6L)	Behind left side of dash, at kick panel.
ESC Module (2.8L)	On right inner fender panel. See Fig. 1.
EST Distributor	At rear of engine. See Fig. 1.
Seat Belt/Lights/Ignition Chime Module	Behind right side of dash, near kick panel.

Isuzu Trooper LS 1990 SENDING UNITS & SENSORS LOCATION

Component	Location
Airflow Sensor (2.6L)	On air intake duct. See Fig. 2.
Coolant Temperature Sensor (2.6L)	On right side of engine, below intake manifold. See Fig. 2.
Coolant Temperature Sensor (2.8L)	On top front center of engine, near thermostat housing. See Fig. 1.
Crank Angle Sensor (2.6L)	Inside distributor. See Fig. 2.
Detonation Sensor (2.8L)	On lower right hand side of engine block. See Fig. 1.
EGR Temperature Sensor (2.6L)	On upper right rear of engine. See Fig. 2.
MAP Sensor (2.8L)	Top center of engine, to left of air cleaner. See Fig. 1.
Oil Pressure Sending Unit	Near oil filter.
Oxygen Sensor	In exhaust manifold. See Fig. 1 & Fig. 2 .
Throttle Position Sensor	On throttle linkage. See Fig. 2.
Transfer Case Oil Temperature Sensor	On left rear of transmission.
Transmission Oil Temperature Sensor	On right side of transmission.
Vehicle Speed Sensor (2.6L)	On left side of transmission. See Fig. 2.
Vehicle Speed Sensor (2.8L)	On left kick panel, in-line with speedometer cable. See Fig. 1.

Isuzu Trooper LS 1990 MOTORS LOCATION

Component	Location
Idle Air Control (IAC) Motor (2.8L)	On left side of throttle body. See Fig. 1.
Windshield Washer Pump	On bottom of windshield washer reservoir.
Windshield Wiper Motor	On right side of firewall.

Isuzu Trooper LS 1990 SOLENOIDS & SOLENOID VALVES LOCATION

Component	Location
A/C Defrost Door & Recirculation Solenoids	Behind right side of dash, behind glove box.
AIR Regulator Solenoid (2.6L)	On lower right side of engine, ahead of starter.
AIR Solenoid (2.6L)	On left fender panel, below fuse block. See Fig. 2.
AIR Solenoid (2.8L)	On right valve cover. See Fig. 1.
Canister Purge Solenoid (2.6L)	On right side of engine compartment, on bracket. See Fig. 2.
EGR Solenoid (2.8L)	On right rear of intake manifold. See Fig. 1.
Fast Idle Solenoid (2.6L)	On right side of engine compartment.
Fuel Injectors (2.6L - 4)	On intake manifold. See Fig. 2.
Fuel Injectors (2.8L - 2)	On top of throttle body. See Fig. 1.
Pressure Regulator Solenoid (2.6L)	On right side of engine compartment, on bracket. See Fig. 2.

Isuzu Trooper LS 1990 SWITCHES LOCATION

Component	Location
A/C Dual Pressure Switch	On receiver-drier.
A/C Thermostatic Switch	Under right side of dash, on top of A/C evaporator housing.
Back-Up Light Switch (M/T)	On left side of transmission case.
Brake/Stoplight Switch	At brake pedal bracket.
Clutch/Start Switch	At clutch pedal bracket.
Clutch Switch	At clutch pedal bracket.
Coolant Temperature Switch (2.6L)	On right side of engine, below intake.
Inhibitor Switch (A/T)	On shift lever bracket.
Neutral Switch	On left side of transmission.
Oil Pressure Switch
2.6L	On right side of engine block, below starter.
2.8L	On left side of engine block, near starter. See Fig. 1.
Parking Brake Switch	At base of parking brake lever.
Power Switch (2.6L)	On right rear corner of engine. See Fig. 2.
Refrigerant Temperature Switch	Behind right side of dash, behind glove box.
Throttle Position Switch (2.6L)	On throttle linkage, with throttle position sensor. See Fig. 2.

Isuzu Trooper LS 1990 MISCELLANEOUS LOCATION

Component	Location
A/C-Heater Blower Motor Resistor
Front Heater	On left side of heater unit, behind side vent duct.
Rear Heater	On top of heater blower motor housing.
Air Regulator Solenoid	On right side of engine, ahead of starter motor.
Diagnostic Connectors
ALDL Connector	Under center console. See Fig. 1, Fig. 2 & Fig. 3 .
Transmission	On left kick panel, near transmission controller.
Trouble Code Connectors	Under center console. See Fig. 3.
Dropping Resistors (2.6L)	On bracket at right rear of engine compartment.
Fuel Pump Relay Diodes (2.6L)	Under left side of dash, at kick panel.
Fuel Pump Test Connector (2.8L)	On left fender panel. See Fig. 1.
Ignition Coil	At top rear of engine. See Fig. 1 & Fig. 2 .
Set Timing Connector (2.8L)	Under center console. See Fig. 1.