Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSMERCURY1991COUGAR LS, 3.8 4REPAIR AND DIAGNOSIS (SINGLE PAGE)ELECTRICALCOMPONENT LOCATIONSELECTRICAL COMPONENT LOCATORCONTROL UNITS
1991 Mercury Cougar LS, 3.8 4
Control Units
1991 Mercury Cougar LS, 3.8 4SECTION Control Units
CONTROL UNITS LOCATION
| Component | Location | |
|---|---|---|
| ABS Control Module | In luggage compartment, below center of package tray. See Figure . | |
| Anti-Theft Control Module | On left rear quarter panel, behind wheelwell. See Figure . | |
| Automatic Ride Control (ARC) Module | In luggage compartment, below center of package tray. See Figure . | |
| Distributorless Ignition System (DIS) Module | On top right front of engine. See Figure . | |
| Electronic Control Assembly (ECA) | Right kick panel. See Figure . | |
| Electronic Variable Orifice (EVO) Power Steering Control Module | In luggage compartment, below center of package tray. See Figure . | |
| Integrated Relay Control Module | On right front of engine bay. See Figure . | |
| Keyless Entry Module | On left rear quarter panel, behind wheelwell. See Figure . | |
| Passive Restraint Module | On left rear quarter panel, behind wheelwell. See Figure . | |
| TFI Ignition Module (EEC-IV) | ||
| 3.8L | On right front of engine bay. See Figure . | |
| 5.0L | On right front of engine bay. See Figure . | |
| Warning Chime Module | Behind right side of dash, below glove box. See Figure . | |
RENDER: 1.0x
NO RELATED
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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.