Chevrolet Astro 1994 - ELECTRICAL COMPONENT LOCATOR 1994 ELEC COMPONENT LOCATION General Motors Corp. - Electrical Component Location

Chevrolet Astro 1994 - BUZZERS, RELAYS & TIMERS

Chevrolet Astro 1994 BUZZERS, RELAYS & TIMERS LOCATION

Component	Location
Blower Relay (High)	On relay bracket, at right rear of engine compartment.
Brake/Trans. Shift Interlock Relay	Behind left side of dash.
Daytime Running Lights (DRL) Relay	On left side of firewall, near brake booster.
Foglight Relay	Behind left side of dash.
Fuel Pump Relay
VIN W	On bracket, on right rear of engine compartment. See Fig. 1 .
VIN Z	On bracket, on right rear of engine compartment. See Fig. 2 .
Hazard Flasher Relay	On convenience center.
Horn Relay	On convenience center.
Intake Manifold Tuning Valve (IMTV) Relay (VIN W)	On bracket, on right rear of engine compartment. See Fig. 1 .
Key-In Warning Buzzer	On convenience center, behind left side of dash.
Power Door Lock Delay Relay	Behind right kick panel.
Power Door Lock Relay	Behind right kick panel.
Rear Window Defogger Timer Relay	Behind left side of dash, near heater control.
Seat Belt Alarm Buzzer	Behind convenience center.
Transmission Range Indicator Light Relay	Behind left side of dash, near steering column.
Turn Signal Flasher Relay	On left side of steering column.

Chevrolet Astro 1994 CIRCUIT PROTECTION DEVICES LOCATION

Component	Location
Battery Junction Block	On left side of firewall.
Circuit Breakers
Blower Relay	On fuse block.
Power Accessories	On fuse block.
Power Windows	On fuse block.
Convenience Center	Behind left side of dash, left of steering column.
Fuse Block
VIN W	Behind left side of dash. See Fig. 1 .
VIN Z	Behind left side of dash. See Fig. 2 .
Fusible Links
ABS Module (Black)	At battery junction block.
Alternator (Rust)	At starter solenoid (2 links).
Blower Relay (Gray)	At battery junction block.
Ignition Switch/Fuse Block (Black)	At battery junction block (2 links).
PCM	On starter solenoid.
Power Access. Circuit Breaker (Black)	At battery junction block.
In-Line Fuses
Power Mirrors	Taped to wiring harness, above fuse block.
Radio	Taped to wiring harness, above fuse block.

Chevrolet Astro 1994 CONTROL UNITS LOCATION

Component	Location
ABS Module	Mounted on brake master cylinder.
Audio Alarm Module	On convenience center, behind left side of dash.
Cruise Control Module	Under left side of dash, right of steering column.
Daytime Running Lights (DRL) Module	Behind left side of dash.
Diagnostic Energy Reserve Module	Behind left side of dash, near kick panel.
Liftgate Lock/Latch Module	Near right rear "D" pillar.
Power Door Lock Delay Module	Behind right kick panel.
Powertrain Control Module (PCM)
VIN W	Behind right kick panel. See Fig. 1 .
VIN Z	Behind right kick panel. See Fig. 2 .

Chevrolet Astro 1994 SENDING UNITS & SENSORS LOCATION

Component	Location
ABS Wheel Speed Sensors	On each wheel hub.
Air Bag
Arming Sensor	Above transmission, at center of crossmember.
Discriminating Sensors	On left and right side of front crossmember, under radiator.
Engine Coolant Temp. Sending Unit	On left rear cylinder head, between spark plugs.
Engine Coolant Temp. (ECT) Sensor
VIN W	On top front of engine. See Fig. 1 .
VIN Z	On top front of engine. See Fig. 2 .
Knock Sensors
VIN W	On left side and right rear side of engine. See Fig. 1 .
VIN Z	On left side and right rear side of engine. See Fig. 2 .
Intake Air Temp. Sensor (VIN W)	On front of engine, in air duct. See Fig. 1 .
Manifold Absolute Pressure Sensor
VIN W	On left front of intake plenum. See Fig. 1 .
VIN Z	On top right of engine, on valve cover. See Fig. 2 .
Throttle Position (TP) Sensor
VIN W	On throttle body assembly. See Fig. 1 .
VIN Z	On throttle body assembly. See Fig. 2 .
Vehicle Speed Sensor (VSS)
VIN W	On rear of transmission or transfer case. See Fig. 1 .
VIN Z	On rear of transmission or transfer case. See Fig. 2 .

Chevrolet Astro 1994 MOTORS LOCATION

Component	Location
Blower Motor
Auxiliary	Behind driver's seat, on side panel.
Main	On right side of firewall.
Cruise Control Servo Motor	On bracket, on top of intake manifold.
Fuel Pump	In fuel tank.
Power Door Lock Motor	Inside bottom of each door.
Power Seat Motor	Under each front seat.
Power Window Motor	Inside respective doors.
Washer Pump Motor (Front & Rear)	In washer fluid reservoir, on right side of engine compartment.
Wiper Motor
Front	On left side of firewall, near brake master cylinder.
Rear	In bottom of liftgate.

Chevrolet Astro 1994 SOLENOIDS & SOLENOID VALVES LOCATION

Component	Location
Brake/Shift Interlock Solenoid	On steering column, below mounting bracket.
Canister Purge Solenoid
VIN W	On left rear of engine compartment. See Fig. 1 .
VIN Z	On top right of engine, on valve cover. See Fig. 2 .
EGR Solenoid
VIN W	On top front of engine.
VIN Z	On right of engine, on top of valve cover.
Idle Air Control (IAC) Valve
VIN W	On throttle body assembly. See Fig. 1 .
VIN Z	On throttle body assembly. See Fig. 2 .
Intake Manifold Tuning Valve (IMTV)	On top center of engine. See Fig. 1 .
Liftgate Release Solenoid	On rear liftgate.
Mini-Wedge Latch Solenoid	On center of right rear door.
Variable Tuning Control Solenoid	On top center of engine.

Chevrolet Astro 1994 SWITCHES LOCATION

Component	Location
A/C High Pressure Cut-Out Switch
VIN W	On A/C line, on left front of engine compartment. See Fig. 1 .
VIN Z	On A/C line, on left front of engine compartment. See Fig. 2 .
A/C Low Pressure Cut-Out Switch
VIN W	On A/C line, on right front of engine compartment. See Fig. 1 .
VIN Z	On A/C line, on right front of engine compartment. See Fig. 2 .
Brake Pressure Warning Switch	In brake master cylinder.
Brakelight/TCC Switch	On brake pedal bracket.
Clutch Start Switch (M/T)	On clutch pedal bracket.
Fuel Pump/Oil Pressure Switch
VIN W	On top rear of engine. See Fig. 1 .
VIN Z	On top rear of engine. See Fig. 2 .
Park/Neutral (P/N) Switch	On lower section of steering column.
Parking Brake Switch	On parking brake assembly.
Seat Belt Warning Switch	On driver's seat belt retractor.

Chevrolet Astro 1994 MISCELLANEOUS LOCATION

Component	Location
Blower Motor Resistor	On each blower motor housing.
Data Link Connector (DLC)
VIN W	Under left side of dash, near convenience center. See Fig. 1 .
VIN Z	Under left side of dash, near convenience center. See Fig. 2 .
Fuel Pump Test Connector
VIN W	In wiring harness, on right side of firewall. See Fig. 1 .
VIN Z	In wiring harness, on right side of firewall. See Fig. 2 .
Vehicle Speed Sensor Buffer
VIN W	Behind left side of dash, right of steering column. See Fig. 1 .
VIN Z	Behind left side of dash, right of steering column. See Fig. 2 .