Buick Century 1994 - 1994 ELECTRICAL COMPONENT LOCATOR General Motors Corp. - Electrical Component Location

Buick Century 1994 - BUZZERS, RELAYS & TIMERS

Buick Century 1994 BUZZERS, RELAYS & TIMERS LOCATION

Component	Location
ABS Relay	On right side of firewall.
A/C Compressor Relay
2.2L (VIN 4)	On relay bracket, in right front corner of engine compartment. See Fig. 1 .
3.1L (VIN M)	On relay bracket, in right front corner of engine compartment. See Fig. 2 .
Antenna Relay	Behind right side of dash, above glove box.
Blower Motor Relay	On relay bracket, in right front corner of engine compartment.
Cooling Fan Relays
2.2L (VIN 4)	On relay bracket, in right front corner of engine compartment. See Fig. 1 .
3.1L (VIN M)	On relay bracket, in right front corner of engine compartment. See Fig. 2 .
Fuel Pump Relay
2.2L (VIN 4)	On relay bracket, in right front corner of engine compartment. See Fig. 1 .
3.1L (VIN M)	On relay bracket, in right front corner of engine compartment. See Fig. 2 .
Hazard Flasher Relay	Behind Glove box, in Convenience Center. See Fig. 3 .
Horn Relay	Behind right hand side of instrument panel.
Power Door Lock Relay	At top of right kick panel.
Tailgate Release Relay	Behind right side of dash, above fuse block.
Turn Signal Flasher Relay	On bracket, above accelerator pedal.

Buick Century 1994 - CIRCUIT PROTECTION DEVICES

Buick Century 1994 CIRCUIT PROTECTION DEVICES LOCATION

Component	Location
A/C In-Line Fuse	Taped on wiring harness, near fuse block.
Convenience Center	Behind left side of dash.
Fuel Pump/PCM Fuse
2.2L (VIN 4)	On relay bracket, in right front corner of engine compartment. See Fig. 1 .
3.1L (VIN M)	On relay bracket, in right front corner of engine compartment. See Fig. 2 .
Fuse Block
2.2L (VIN 4)	Behind right side of dash, to left of glove box. See Fig. 1 .
3.1L (VIN M)	Behind right side of dash, to left of glove box. See Fig. 2 .
Fusible Links	At starter solenoid, or battery positive terminal pigtail.
Multi-Function Alarm In-Line Fuse	Near fuse block, taped to harness.
Power Accessory Circuit Breaker	In fuse block.

Buick Century 1994 - CONTROL UNITS

Buick Century 1994 CONTROL UNITS LOCATION

Component	Location
ABS Control Module	Behind right side of dash, above PCM.
Auto. Door Unlock Module	Under right side of side, near heater duct.
Cruise Control Module	Front of left shock tower. See Fig. 2 .
Daytime Running Lights (DRL) Module	Behind center of dash, near turn signal flasher.
Diagnostic Energy Reserve Module (DERM)	Behind A/C control panel.
Ignition Module
2.2L	On right side of cylinder block, under intake manifold. See Fig. 1 .
3.1L	At timing chain end of left cylinder head. See Fig. 2 .
Light Driver Module	Under left side dash, left of steering column.
Power Window Control Module (Cutlass Ciera & Cutlass Cruiser)	Behind left kick panel.
Powertrain Control Module (PCM)
2.2L (VIN 4)	Behind right side of dash. See Fig. 1 .
3.1L (VIN M)	Behind right side of dash. See Fig. 2 .
Remote Keyless Entry Module	Above left rear wheelwell.
Variable Effort Steering (VES) Control Module (Ciera & Cutlass Cruiser)	Behind left side of dash.
Wiper Motor Module
Front	On left side of firewall, part of wiper motor.
Rear (Century)	On center of tailgate, part of wiper motor.

Buick Century 1994 - SENDING UNITS & SENSORS

Buick Century 1994 SENDING UNITS & SENSORS LOCATION

Component	Location
ABS Wheel Speed Sensors	On each wheel knuckle assembly.
A/C Pressure Sensor
2.2L (VIN 4)	On right side of engine compartment, on A/C line. See Fig. 1 .
3.1L (VIN M)	On right side of engine compartment, on A/C line. See Fig. 2 .
Air Bag System
Arming Sensor	Behind dash, left of PCM.
Discriminating Sensor
Forward	Forward of engine compartment, below hood latch.
Passenger Compartment	Behind dash, forward of center console.
Camshaft Position Sens. (3.1L)	On right side of engine, behind A/C compressor. See Fig. 2 .
	Coolant Temperature Sensors (Telltale & Gauge)	On right rear of engine. See Fig. 2 .
Crankshaft Position Sens. (3.1L)	At end of crankshaft pulley. See Fig. 2 .
Crankshaft Position Sens. (2.2L)	Mounted in block, under coil pack.
Engine Coolant Temp. (ECT) Sensor
2.2L	Bottom of coolant outlet. See Fig. 1 .
3.1L	On left rear of engine.
Intake Air Temp. (IAT) Sensor
2.2L	On top right rear of engine, on intake manifold. See Fig. 1 .
3.1L	On air cleaner canister. See Fig. 2 .
Knock Sensor
2.2L	On right side of engine, near ignition coil pack. See Fig. 1 .
3.1L	On left side of engine block, below exhaust manifold. See Fig. 2 .
Manifold Absolute Pressure (MAP) Sensor (2.2L)	On right side of air cleaner assembly. See Fig. 1 .
Mass Airflow (MAF) Sensor (3.1L)	Near throttle body assembly. See Fig. 2 .
Throttle Position (TP) Sensor
2.2L (VIN 4)	On throttle body assembly. See Fig. 1 .
3.1L (VIN M)	On throttle body assembly. See Fig. 2 .
Variable Effort Steering (VES) Wheel Rotation Sensor	On bottom on steering column.
Vehicle Speed Sensor (VSS)
2.2L (VIN 4)	On right side of transaxle. See Fig. 1 .
3.1L (VIN M)	On right side of transaxle. See Fig. 2 .

Buick Century 1994 - MOTORS

Buick Century 1994 MOTORS LOCATION

Component	Location
Blower Motor	On right side of firewall.
Power Door Lock Motor	Near lower rear portion of each door.
Power Mirror Motor	In each mirror assembly.
Power Seat Motor	Under seat assembly.
Power Window Motor	In each door.
Windshield Washer Motor	In front and rear washer fluid reservoir.

Buick Century 1994 - SOLENOIDS & SOLENOID VALVES

Buick Century 1994 SOLENOIDS & SOLENOID VALVES LOCATION

Component	Location
ABS Solenoids	On ABS master cylinder.
Automatic Seat Belt
Lap Retractor Release Solenoid	In lower rear of respective front door.
Shoulder Retractor Release Solenoid	In lower rear of respective front door.
Canister Purge Solenoid
2.2L	On rear of engine, under intake plenum. See Fig. 1 .
3.1L	On right rear of engine, under intake manifold. See Fig. 2 .
EGR Solenoid
2.2L	On top of intake manifold. See Fig. 1 .
3.1L	On top left rear of engine.
Idle Air Control (IAC) Valve
2.2L (VIN 4)	On throttle body assembly. See Fig. 1 .
3.1L (VIN M)	On throttle body assembly. See Fig. 2 .
Tailgate Release Solenoid (Wagon)	In lower left side of tailgate.
Trunk Lid Release Solenoid	On trunk lid latch assembly.

Buick Century 1994 - SWITCHES

Buick Century 1994 SWITCHES LOCATION

Component	Location
Brake/Cruise/TCC Switch	On brake pedal support bracket.
Brake Fluid Level Switch	In brake fluid reservoir.
Fuel Pump/Oil Pressure Switch
2.2L	On right side of engine, near ignition coil.
3.1L	On right side of engine, near oil filter. See Fig. 2 .
Oil Pressure Switches (Telltale & Gauge - 3.1L)	On left side of engine. See Fig. 2 .
Parking Brake Switch	On parking brake assembly.
Park/Neutral (P/N) Switch
2.2L (VIN 4)	On top left side of transaxle. See Fig. 1 .
3.1L (VIN M)	On top left side of transaxle. See Fig. 2 .
Seat Belt Switch	On driver's seat belt assembly.
Tailgate Ajar Switch (Wagon)	Bottom center of tailgate.

Buick Century 1994 - MISCELLANEOUS

Buick Century 1994 MISCELLANEOUS LOCATION

Component	Location
A/C Compressor Diode	In compressor wiring, below A/C compressor.
Blower Motor Resistors	In engine compartment, on blower fan housing.
Data Link Connector (DLC)
2.2L (VIN 4)	Under left side of dash, near steering column. See Fig. 1 .
3.1L (VIN M)	Under left side of dash, near steering column. See Fig. 2 .
DRL Photo Resistor	On top center of dash.
Fuel Pump Prime/Test Connector
2.2L (VIN 4)	On right front or left rear corner of engine compartment. See Fig. 1 .
3.1L (VIN M)	On right front or left rear corner of engine compartment. See Fig. 2 .
High Level Stoplight Resistor	In wiring harness, in liftgate.
Interior Light Dimmer Transistor	Behind left side of dash, near light switch.