1990 Ford Probe GL, AutomaticFACTORY OEM SERVICE PROCEDURE

Electrical Component Locator: Switches

CAUTION: DO NOT connect or disconnect Air Bag System Diagnostic Module (ASDM) electrical connector unless module mounting tabs are securely bolted (grounded) to vehicle. ALWAYS disconnect and isolate battery negative cable before servicing system.
SWITCHES LOCATION

Component Location
A/C Clutch Cycling Switch
3.0L On right rear of engine bay, on accumulator. See Figure .
2.2L On right rear of engine bay, on accumulator. See Figure .
Back-Up Light Switch On bottom of manual transaxle.
Back-Up/Neutral Safety Switch At top front of automatic transaxle. See Figure .
Cancel Switch (Horn/Turn Signal Switch) On right side of steering column, behind dash. See Figure .
Clutch Engage Switch On clutch pedal bracket. See Figure .
Clutch Interlock Switch Behind dash, right of steering column. See Figure .
Coolant Temperature Switch On thermostat and in bottom right of radiator. See Figure .
Cooling Fan Temperature Switch
2.2L ATX In thermostat.
2.2L MTX Center of intake manifold, between injectors.
3.0L In thermostat.
Idle Switch (2.2L) On front side of throttle body.
Inertia Switch Behind left rear interior trim panel.
Low Oil Level Switch (3.0L) On right rear of engine above starter.,
Oil Pressure Switch Above and right of oil filter. See Figure .
Parking Brake Switch At parking brake lever.
Power Steering Pressure Switch On rack and pinion, in right rear high pressure line. See Figure .
Radiator Temperature Switch
LX & GT On intake manifold.
2.2L ATX On thermostat. See Figure .
2.2L MTX On intake manifold near injectors. See Figure .
Seat Belt Buckle Switch At driver's seat belt buckle.
Starter Interlock Switch Right of steering column, behind dash.
Stoplight Switch On top of brake pedal support.
Trans. Fluid Temp. Switch Top rear of ATX, for indicator dash light.
Factory Service Tools

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.

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