Chevrolet Corsica LT 1991 - ELECTRICAL COMPONENT LOCATOR 1991 GENERAL MOTORS ELECTRONIC COMPONENT LOCATOR

Chevrolet Corsica LT 1991 - BUZZERS, RELAYS & TIMERS

Chevrolet Corsica LT 1991 BUZZERS, RELAYS & TIMERS LOCATION

Component	Location
A/C Compressor Relay
2.2L VIN G	On relay bracket, at center of firewall, in engine compartment. See Fig. 1 .
2.3L VIN A	On relay bracket, at center of firewall, in engine compartment. See Fig. 2 .
3.1L VIN T	On relay bracket, at center of firewall, in engine compartment. See Fig. 3 .
A/C Heater Blower Relay
2.3L VIN A	On relay bracket, at center of firewall, in engine compartment. See Fig. 2 .
Firewall	On relay bracket, at center of firewall, in engine compartment. See Fig. 4 .
A/C High Blower Relay (3.1L)	On relay bracket, at center of firewall, in engine compartment. See Fig. 3 .
Cooling Fan Relay
2.2L VIN G	On relay bracket, at center of firewall, in engine compartment. See Fig. 1 .
2.3L VIN A	On relay bracket, at center of firewall, in engine compartment. See Fig. 2 .
3.1L VIN T	On relay bracket, at center of firewall, in engine compartment. See Fig. 3 .
Firewall	On relay bracket, at center of firewall, in engine compartment. See Fig. 4 .
Fog Light Relay	On radiator support bracket, behind battery.
Fuel Pump Relay
2.2L VIN G	On relay bracket, at center of firewall, in engine compartment. See Fig. 1 .
2.3L VIN A	On relay bracket, at center of firewall, in engine compartment. See Fig. 2 .
3.1L VIN T	On relay bracket, at center of firewall, in engine compartment. See Fig. 3 .
Hazard Flasher Relay	In convenience center.
Power Door Lock Relay	Behind left kick panel.
Trunk Release Relay	Behind left kick panel.
Turn Signal Flasher Relay	Behind dash panel, left of steering column.

Chevrolet Corsica LT 1991 - CIRCUIT PROTECTION DEVICES

Chevrolet Corsica LT 1991 CIRCUIT PROTECTION DEVICES LOCATION

Component	Location
Convertible Top Circuit Breaker	In-line in roof switch circuit, taped to harness.
ECM In-Line Fuse
2.2L VIN G	On relay bracket, at center of engine compartment firewall. See Fig. 1 .
2.3L VIN A	On relay bracket, at center of engine compartment firewall. See Fig. 2 .
3.1L VIN T	On relay bracket, at center of engine compartment firewall. See Fig. 3 .
Firewall	On relay bracket, at center of engine compartment firewall. See Fig. 4 .
Fuse Block
2.2L VIN G	Behind left side of dash panel. See Fig. 1 .
2.3L VIN A	Behind left side of dash panel. See Fig. 2 .
3.1L VIN T	Behind left side of dash panel. See Fig. 3 .
Fusible Links
"A" (Red) Coolant Fan Relay	At battery junction block.
"B" (Red) Charging System	At starter solenoid.
"C" (Red) Charging System	At starter solenoid.
"D" (Red) Accessories	At starter solenoid.
"F" (Red) Fog Lights	On battery terminal.

Chevrolet Corsica LT 1991 - CONTROL UNITS

Chevrolet Corsica LT 1991 CONTROL UNITS LOCATION

Component	Location
Air Bag System
Initiator Module	In air bag module.
Resistor Module	Behind left side of dash panel.
Cruise Control Module	Behind right side of dash panel, above glove box.
Diagnostic Energy Reserve Module (DERM)	Behind right side of dash panel, above glove box.
Direct Ignition System (DIS) Module
2.2L VIN G	Below intake manifold. See Fig. 1 .
2.2L Engine	Below intake manifold. See Fig. 5 .
2.3L	On top of engine. See Fig. 2 .
3.1L	On left side of engine. See Fig. 3 .
Electronic Control Module (ECM)
2.2L VIN G	Behind right side of dash panel. See Fig. 1 .
2.3L VIN A	Behind right side of dash panel. See Fig. 2 .
3.1L VIN T	Behind right side of dash panel. See Fig. 3 .
Low Coolant Module	Behind dash panel, left of steering column.
Wiper/Washer Motor Module	On wiper motor, on left side of firewall.

Chevrolet Corsica LT 1991 - SENDING UNITS & SENSORS

Chevrolet Corsica LT 1991 SENDING UNITS & SENSORS LOCATION

Component	Location
A/C Pressure Sensor	On right front of engine compartment, on A/C line. See Fig. 3 .
Air Bag System Arming Sensor	Behind right side of dash panel, above glove box.
Discriminating Sensors
Forward	On center of radiator support.
Passenger Compartment	In console, near parking brake.
Coolant Temperature Sensor
2.2L VIN G	On coolant outlet, left side of engine. See Fig. 1 .
2.3L VIN A	On coolant outlet, left side of engine. See Fig. 2 .
3.1L VIN T	On coolant outlet, left side of engine. See Fig. 3 .
2.2L Engine	On coolant outlet, left side of engine. See Fig. 6 .
Crank Position Sensor
2.2L	Below exhaust manifold, at left rear of engine. See Fig. 5 .
2.3L	On lower left front of engine, above oil filter.
3.1L	On right rear of engine, above Vehicle Speed Sensor (VSS). See Fig. 3 .
Fuel Pump/Oil Pressure Sender Switch
2.2L	On rear center of engine, below DIS module.
2.3L	On left side of engine, near DIS module.
3.1L	On right front of engine, below water pump.
Knock Sensor
2.3L VIN A	Below exhaust manifold, at right rear of engine. See Fig. 2 .
3.1L VIN T	Below exhaust manifold, at right rear of engine. See Fig. 3 .
Manifold Absolute Pressure (MAP) Sensor
2.2L VIN G	On relay bracket, at center of engine compartment firewall. See Fig. 1 .
3.1L VIN T	On relay bracket, at center of engine compartment firewall. See Fig. 3 .
Firewall	On relay bracket, at center of engine compartment firewall. See Fig. 4 .
2.3L	On left front side of engine, above intake manifold. See Fig. 2 .
Manifold Air Temp. (MAT) Sensor
2.2L	On throttle body. See Fig. 1 .
2.3L VIN A	On left front side of engine, near intake manifold. See Fig. 2 .
3.1L VIN T	On left front side of engine, near intake manifold. See Fig. 3 .
Throttle Position Sensor (TPS)
2.2L VIN G	On throttle body. See Fig. 1 .
2.3L VIN A	On throttle body. See Fig. 2 .
3.1L VIN T	On throttle body. See Fig. 3 .
Vehicle Speed Sensor (VSS)
2.2L VIN G	On top rear of transaxle. See Fig. 1 & 5.
2.3L VIN A	On top rear of transaxle. See Fig. 2 .
3.1L VIN T	On top rear of transaxle. See Fig. 3 .

Chevrolet Corsica LT 1991 - MOTORS

Chevrolet Corsica LT 1991 MOTORS LOCATION

Component	Location
A/C-Heater Blower Motor	On right side of cowl. See Fig. 4 .
A/C Temperature Valve Motor	Behind center of dash panel, below radio.
Door Lock Motors	Near rear of each door.
Door Window Motors	In lower front of each door.
Power Seat Motors	Under front seats.
Windshield Washer Pump Motor	In windshield washer fluid reservoir.

Chevrolet Corsica LT 1991 - SOLENOIDS & SOLENOID VALVES

Chevrolet Corsica LT 1991 SOLENOIDS & SOLENOID VALVES LOCATION

Component	Location
Canister Purge Solenoid Valve
2.3L	On fuel vapor line, behind power steering pump. See Fig. 2 .
3.1L	On canister, at right front of engine compartment. See Fig. 3 .
Idle Air Control (IAC) Valve
2.2L VIN G	On throttle body. See Fig. 1 .
2.3L VIN A	On throttle body. See Fig. 2 .
3.1L VIN T	On throttle body. See Fig. 3 .
Torque Converter Clutch (TCC) Solenoid	In transaxle.
Trunk Release Solenoid
Beretta	Near luggage compartment lock mechanism.
Corsica	In lower rear of luggage compartment lid.

Chevrolet Corsica LT 1991 - SWITCHES

Chevrolet Corsica LT 1991 SWITCHES LOCATION

Component	Location
A/C Cooling Fan Pressure Switch	On refrigerant line, at right front of engine compartment.
A/C High Pressure Cut-Out Switch	In pressure line, in front of engine compartment. See Fig. 1 .
A/C Low Pressure Cut-Out Switch
2.2L & 2.3L	On rear of A/C compressor.
3.1L	In A/C low pressure line, in front of engine compartment.
Brakelight Switch	On upper brake pedal support.
Clutch Start Switch	On clutch pedal support.
Coolant Temp. Sender/Switch
2.2L & 2.3L	On coolant outlet, at left side of engine. See Fig. 6 .
3.1L	Above exhaust manifold, at left side of engine. See Fig. 3 .
Cruise/Brake Switch	On upper brake pedal support.
Cruise/Clutch Switch	On clutch pedal support.
Brake Fluid Level Switch	On brake master cylinder.
Fuel Pump/Oil Pressure Switch
2.2L	At center of engine, below DIS module. See Fig. 5 .
2.3L	On left side of engine, below DIS module.
3.1L	On left front of engine, below water pump.
Ignition Key Warning Switch	In steering column, below turn-hazard switch.
Oil Pressure Sender/Switch
2.2L	Under intake manifold, at right rear of engine. See Fig. 5 .
2.3L & 3.1L	Near oil filter, at right front of engine. See Fig. 3 .
Park/Neutral (P/N) Switch
2.2L VIN G	On top left side of transaxle. See Fig. 1 .
3.1L VIN T	On top left side of transaxle. See Fig. 3 .
2.2L Engine	On top left side of transaxle. See Fig. 5 .
Parking Brake Switch	On parking brake support.
Power Steering Pressure Switch	In pressure hose, near power steering pump. See Fig. 3 .
Seat Belt Warning Switch	In driver's seat belt buckle.

Chevrolet Corsica LT 1991 - MISCELLANEOUS

Chevrolet Corsica LT 1991 MISCELLANEOUS LOCATION

Component	Location
A/C Clutch Diode
2.2L	On right front of engine, below oxygen sensor.
2.3L	Under intake manifold, above oil filter.
3.1L	On right front of engine, above starter solenoid.
A/C-Heater Blower Motor Resistor	On left side of blower housing.
ALDL Diagnostic Connector
2.2L VIN G	Below dash panel, left of steering column. See Fig. 1 .
2.3L VIN A	Below dash panel, left of steering column. See Fig. 2 .
3.1L VIN T	Below dash panel, left of steering column. See Fig. 3 .
Convenience Center	Behind left side of dash panel, left of steering column.
Fuel Pump Prime/Test Connector
2.2L VIN G	In left rear corner of engine compartment, near strut tower. See Fig. 1 .
2.3L VIN A	In left rear corner of engine compartment, near strut tower. See Fig. 2 .
3.1L VIN T	In left rear corner of engine compartment, near strut tower. See Fig. 3 .
Remote Dimmer	Behind dash panel to left of steering column.