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 MANUALSMITSUBISHI1990PRECIS BASE, STANDARDREPAIR AND DIAGNOSIS (SINGLE PAGE)HEATING, VENTILATION & A/C (HVAC)HVAC CONTROL SYSTEMSHEATER SYSTEMTESTINGBLOWER MOTOR TESTING
1990 Mitsubishi Precis Base, Standard
Blower Motor Testing
1990 Mitsubishi Precis Base, StandardSECTION Blower Motor Testing
- The blower motor is located in the blower motor housing, behind right side lower crash pad. Disconnect blower motor electrical connector. Remove retaining screws. Remove blower motor from case.
- Holding blower motor securely, check for abnormal noise, bent fan shaft and cracked or damaged blower fan. If blower motor shaft or fan are damaged, replace defective part as needed.
- Carefully connect jumper leads from battery negative and positive posts directly to blower motor terminals. Ensure motor operates smoothly. Reverse jumper leads, ensure motor operates smoothly in the reverse direction. If blower motor is inoperative or makes abnormal noise, replace blower motor.
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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.