ELECTRICAL COMPONENT LOCATOR 1990 ISUZU ELECTRIC COMPONENT LOCATOR

Isuzu Pickup LS 1990 - BUZZERS, RELAYS & TIMERS

Isuzu Pickup LS 1990 BUZZERS, RELAYS & TIMERS LOCATION

Component	Location
A/C-Heater Blower Relay (Black)	In fuse/relay block, on right side of engine compartment. See Fig. 1 .
Charge Relay (Blue)	In fuse/relay block, on right side of engine compartment. See Fig. 1 .
ECM Relay (Black - 2.3L)	In fuse/relay block, on right side of engine compartment. See Fig. 1 .
EFE Heater Relay (Black - 2.3L)	In fuse/relay block, on right side of engine compartment. See Fig. 1 .
Fuel Pump Relay (Black - 2.6L)	In fuse/relay block, on right side of engine compartment. See Fig. 1 .
Headlight Relay (Black)	In fuse/relay block, on right side of engine compartment. See Fig. 1 .
Intermittent Wiper Relay	In fuse/relay block, on right side of engine compartment. See Fig. 1 .
Main Power Relay (Brown - 2.6L)	In fuse/relay block, on right side of engine compartment. See Fig. 1 .
Overdrive Relay (2.6L)	In fuse/relay block, on right side of engine compartment. See Fig. 1 .
Turn Signal/Hazard Flasher	Under left side of dash, behind instrument cluster.
Warning Buzzer	At right kick panel.

Isuzu Pickup LS 1990 CIRCUIT PROTECTION DEVICES LOCATION

Component	Location
Dropping Resistor (2.6L)	At right rear of engine compartment. See Fig. 2 .
Fuse/Relay Block
2.3L	On right fender panel. See Fig. 1 & Fig. 3 .
2.6L	On right fender panel. See Fig. 1 .

Isuzu Pickup LS 1990 CONTROL UNITS LOCATION

Component	Location
Electronic Control Module (ECM)	Behind left kick panel. See Fig. 2 , Fig. 3 & Fig. 4 .
Illumination Controller	Behind left of dash, to right of column.

Isuzu Pickup LS 1990 SENDING UNITS & SENSORS LOCATION

Component	Location
Airflow Sensor	On top of air intake duct. See Fig. 2 .
Coolant Temperature Sending Unit	On right front of engine block.
Coolant Temperature Sensor	On right side engine block. See Fig. 2 & Fig. 3 .
Crank Angle Sensor (2.6L)	Inside distributor. See Fig. 2 .
EGR Temperature Sensor (Except Fed. Carb.)	In intake air stream, near EGR valve.
MAP Sensor (2.3L)	On right side of engine compartment. See Fig. 3 .
Oil Pressure Sending Unit	On right front corner of engine block.
Oxygen Sensor	In exhaust manifold. See Fig. 2 & Fig. 3 .
Vehicle Speed Sensor (2.6L)	Built into speedometer. See Fig. 2 .

Isuzu Pickup LS 1990 MOTORS LOCATION

Component	Location
A/C-Heater Blower Motor	Under right side of dash, on A/C-heater blower motor housing.
Fuel Pump	In fuel tank.
Windshield Washer Pump	On bottom of windshield washer reservoir.

Isuzu Pickup LS 1990 SOLENOIDS & SOLENOID VALVES LOCATION

Component	Location
Mixture Control (Duty) Solenoid (2.3L)	On carburetor.
Slow Fuel-Cut Solenoid (2.3L)	On rear of carburetor.
Vacuum Switching Solenoid Valves
Air Injection Reactor (AIR)
2.3L	In right rear corner of engine compartment. See Fig. 3 .
2.6L	On back of air pump or on left fender well. See Fig. 2 .
Canister Purge
2.3L	In right rear corner of engine compartment. See Fig. 3 .
2.6L	In engine compartment, above right fender panel. See Fig. 2 .
EGR (2.6L)	At rear of engine. See Fig. 2 .
Ignition (2.3L)	In right rear corner of engine compartment. See Fig. 3 .
Fuel Pressure (2.6L)	On right fender panel, near fuel vapor canister. See Fig. 2 .
MAP Sensor (2.3L)	In right rear corner of engine compartment. See Fig. 3 .
Vent Switching Solenoid (2.3L)	On front top of carburetor.

Isuzu Pickup LS 1990 SWITCHES LOCATION

Component	Location
A/C Dual Pressure Switch	On receiver-drier, in left front corner of engine compartment.
Back-Up Light Switch (M/T)	On top of transmission case.
Brake/Stoplight Switch	At brake pedal bracket.
Clutch/Start Switch	At clutch pedal bracket.
Idle Vacuum Switch (2.3L)	On right side of engine compartment. See Fig. 3 .
Oil Pressure Switch	On front right side of engine block.
Power Switch (2.6L)	On right side of engine, at valve cover. See Fig. 2 .
Throttle Switch (2.6L)	On throttle linkage. See Fig. 2 .

Isuzu Pickup LS 1990 MISCELLANEOUS LOCATION

Component	Location
A/C-Heater Blower Motor Resistors	On top of heater blower motor housing.
Diagnostic Connector
ALDL (3-Wire)	Behind left kick panel. See Fig. 4 .
Trouble Code Connector Terminals	Behind left kick panel. See Fig. 4 .
EFE Heater (2.3L)	On top of intake manifold, below carburetor.
Mixture Dwell Lead (2.3L)	In right rear corner of engine compartment (Light Green/Red wire).