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)ENGINE PERFORMANCESYSTEMENGINE CONTROLS - BASIC TESTINGIGNITION CHECKSDISTRIBUTORLESS IGNITION SYSTEM (DIS)POWER TRANSISTOR (ECLIPSE 2.0L)

1990 Mitsubishi Precis Base, Standard

Power Transistor (Eclipse 2.0L)

1990 Mitsubishi Precis Base, StandardSECTION Power Transistor (Eclipse 2.0L)

Disconnect power transistor connector. Using an analog ohmmeter, connect positive ohmmeter lead to terminal No. 3 and negative lead to terminal No. 1. See Fig 1 -Fig 2 . Ensure there is no continuity.
Using a 1.5-volt dry cell battery, connect positive end of 1.5-volt battery to power transistor terminal No. 2 and negative end to terminal No. 3. Ohmmeter should now read continuity between power transistor terminals No. 3 and No. 1.
Connect positive end of 1.5-volt battery to power transistor terminal No. 5 and negative end to terminal No. 3. Connect positive ohmmeter lead to terminal No. 3 and negative lead to terminal No. 6. Ohmmeter should read continuity. Replace power transistor if it does not test as described.

Fig 1: All Models Except Eclipse 2.0L Power Transistor Connector Identification (DIS Models)
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.

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.