Electrical Component Locator — Mercury Sable I (1986-1991)

BUZZERS, RELAYS & TIMERS

Component		Location
Alternator Output Control Relay
Heated Windshield Only		Between right front inner fender panel and splash shield.
Without Heated Windshield		Between right front inner fender panel and splash shield.
Autolight Relays		Under left center of dash. (Scheme 1)
EEC Power Relay
3.0L/3.8L (FWD)		Part of integrated relay control module (IRCM).
Except 3.0L/3.8L (FWD)		Under right side of dash, integral with ECA.
Fuel Pump Relay		In integrated relay control module (IRCM).
Hazard Flasher Relay		Above fuse panel, on lower left dash reinforcement. (Scheme 2)
Horn Relay		Under left side of dash. (Scheme 2)
Liftgate Release Relay		At left shroud.
Low Oil Level Relay		On brace, under dash. (Scheme 2)
Power Moon Roof Motor Relay		Behind right end of dash.
Power Window Safety Relay		Behind right end of dash.
Starter Relay		On left front inner fender panel, in front of strut tower. (Scheme 3)& (Scheme 4)
Turn Signal Flasher Relay		On upper right corner of fuse block. (Scheme 5)
Upshift Relay (M/T)		On brace under dash. (Scheme 2)

BUZZERS, RELAYS & TIMERS LOCATION

Component		Location
Circuit Breakers
Cigar Lighter/Horn Relay		In cavity 12 of fuse block. (Scheme 5)
In-Line Power Distribution		On left front inner fender panel, below starter relay. (Scheme 4)
Windshield Wiper/Washer		In cavity 2 of fuse block. (Scheme 5)
Fuse Block		Under left side of dash. (Scheme 2)& (Scheme 5).
Fusible Links
A (Brown/18 ga.) Alternator Relay		In right front of engine bay, at alternator output control relay.
B (Blue/20 ga.) Light Switch		In left rear of engine bay, near strut tower. (Scheme 4)
C (Black/16 ga.) Defroster		In left rear of engine bay, near strut tower. (Scheme 4)
D (Black/16 ga.) Fuse Block		In left rear of engine bay, near strut tower. (Scheme 4)
E (Black/16 ga.) Ignition Switch		On left inner fender panel, near voltage regulator. (Scheme 4)
F (Blue/20 ga.) Charging System		At starter relay. (Scheme 4)
G (Green/14 ga.) EEC Relay		At starter relay. (Scheme 4)

CIRCUIT PROTECTION DEVICES LOCATION

Component		Location
ATC Blower Motor Speed Controller		In evaporator case.
ATC Control Unit		In center of dash.
Diagnostic Fuel Control Module		Behind instrument cluster.
Electronic Control Assembly (ECA)		Under right side of dash.
Heated Windshield Control Module		Under left side of dash, on steering column support bracket.
Illuminated Entry Module
Sedan		On package tray, behind rear seat.
Station Wagon		Behind left rear quarter panel.
Integrated Controller Module		On bottom of upper radiator support. (Scheme 6)
Keyless Entry Module
Sedan		On package tray, behind rear seat.
Station Wagon		In trunk, on left rear quarter panel.
Light-Out Diagnostic Warning Module
Sable		Behind left side of dash, near fuse panel.
Taurus		Behind right side of dash, above glove box.
TFI Ignition Module
3.8L, Closed Bowl Distributor		Right side of firewall, above ECA harness.
Except 3.8L, Closed Bowl Models		On side of distributor.
Voice Alert Module		Under left side of instrument panel.
Warning Chime Module		Under center of dash. (Scheme 2)

CONTROL UNITS LOCATION

Component		Location
Air Charge Temperature Sensor
3.0L & 3.8L		On front right of intake manifold. (Scheme 8)
2.5L		At rear of intake manifold.
ATC Ambient Temperature Sensor		In front of condenser, on left front inner fender panel.
ATC In-Car Temperature Sensor		Behind right side of dash, above glove box.
ATC Lock-Out Sensor		In coolant passage, at right rear of engine. (Scheme 8)
ATC Sun Sensor		In left dash radio speaker grille. (Scheme 2)
AXOD Gear Sensor/Lock-Up Converter Pressure Switch		On top of transaxle, at rear of engine. (Scheme 8)
Brake Fluid Level Sensor		In master cylinder fluid reservoir.
Coolant Temp Sending Unit		On rear of engine. (Scheme 8)
Coolant Temperature Sensor
2.5L		On right rear side of engine.
3.0L & 3.8L		On top rear of engine. (Scheme 8)
EGR Pressure Feedback Sensor
2.5L		On top right rear of engine.
3.0L		At top front of engine. (Scheme 8)
3.8L		On top right rear of engine.
Fuel Gauge Sending Unit		On top right side of fuel tank.
Knock Sensor		On lower right side of engine. (Scheme 8)
MAP Sensor		At right rear of engine bay, behind strut tower. (Scheme 3)& (Scheme 7).
Oxygen Sensor		In exhaust manifold. (Scheme 9)
Throttle Position Sensor
2.5L		On front center of intake manifold.
3.0L & 3.8L		On side of throttle body. (Scheme 8)
Vehicle Speed Sensor		On lower right side of engine. (Scheme 8)

SENDING UNITS & SENSORS LOCATION

Component	Location
A/C-Heater Blower Motor	Inside heater/evaporator assembly.
Electric Fuel Pump Motor	On top of fuel tank.
Front Washer Motor	In bottom of washer fluid reservoir. (Scheme 7)
Front Wiper Motor	On firewall, at left rear side of engine bay. (Scheme 3)& (Scheme 4).
Lumbar Seat Air Pump Motor	Under each front seat.
Power Antenna Motor	Behind right front inner fender panel.
Power Door Lock Motor	Inside each door.
Power Mirror Motor	In each mirror assembly.
Power Moon Roof Motor	In center of headliner, behind moon roof.
Power Seat Motor	Under front seats.
Power Window Motor	Inside each door.
Rear Washer Motor	On right rear quarter panel.
Rear Wiper Motor	In liftgate.

MOTORS LOCATION

Component	Location
Air By-Pass Solenoid Valve	On top center of engine.
Canister Purge Solenoid	On left side of radiator support.
EGR Vacuum Regulator Solenoid	On right front inner fender panel, at shock tower. (Scheme 7)
Idle Speed Control Solenoid	On top of engine, next to distributor. (Scheme 3)& (Scheme 8).
Thermactor Air By-Pass Solenoid	On left fender apron.
Trunk Release Solenoid	In trunk, integral with latch assembly.

SOLENOIDS & SOLENOID VALVES LOCATION

Component	Location
A/C Clutch Cycling Pressure Switch	On left side of firewall, on top of accumulator. (Scheme 7)
Back-Up/Neutral Safety Switch	On top of transaxle. (Scheme 8)
Brake/Stoplight Switch	On top of brake pedal support. (Scheme 10)
Clutch Switch	On top of brake pedal support. (Scheme 10)
Door/Liftgate Ajar Switch	At each door jamb, including liftgate.
Dual Brake Warning Switch	On master cylinder. (Scheme 4)
Fuel Pump Inertia Switch	Behind access panel of right rear quarter panel.
Key Reminder Switch	On steering column, integral with ignition switch.
Keyless Entry Switch Assembly	In driver's door, above handle.
Low Fuel Warning Switch	On back of instrument cluster printed circuit board.
Low Oil Level Switch	On lower right side of engine. (Scheme 8)
Multifunction Switch	On left side of steering column.
Oil Pressure Switch	On right upper rear of engine. (Scheme 8)
Parking Brake Switch	Above parking brake pedal.
Power Steering Press Switch	On lower right rear side of engine. (Scheme 8)
Seat Belt Switch	In driver's seat belt buckle.
Starter Interlock Switch	On top of brake pedal support. (Scheme 10)
Washer Fluid Level Switch	In washer fluid reservoir. (Scheme 7)

SWITCHES LOCATION

Component		Location
A/C-Heater Blower Motor Resistors		On evaporator housing.
ATC Blend Door Actuator		Under left side of dash, near blower assembly.
Cooling Fan Motor Dropping Resistor (3.0L)		At rear left top of engine. (Scheme 8)
Cracked Windshield Sensor Resistor		Right front of engine bay, at alternator control relay.
Front Wiper Interval Governor		On left side of steering column. (Scheme 2)
Idle Speed Control Diode		On top of engine, taped to fuel charge harness.
Light Sensor Amplifier		Attached to top right of dash. (Scheme 1)
Self-Test Connector
2.5L		On top front of engine. (Scheme 11)
3.0L and 3.8L		On right side of firewall.
Voltage Regulator		On left front of engine bay.
22,000 Ohm Resistor		On rear of engine, by ignition coil.