Power Transistor (Fuel Injected Models)

WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 1990 Mitsubishi Van, 1990 Mitsubishi Sigma, 1990 Mitsubishi Precis, 1990 Mitsubishi Pickup, and 1990 Mitsubishi Montero. However, it is still accessible from the selected car via links, so may be relevant.

Disconnect power transistor connectors. Using a DVOM, connect positive ohmmeter lead to terminal No. 2 and negative lead to terminal No. 3. See Fig 5 . 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. 1 and negative end to terminal No. 2. DVOM should now read continuity at power transistor terminals No. 2 and No. 3. If DVOM does not respond as described, replace power transistor.

Fig 1: Ignition Coil Terminal Identification (Magnetic & Optical Ignition)(Eclipse, Mirage 1.5L, Pickup 2.4L & Precis)
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.

Fig 2: Ignition Coil Terminal Identification (Magnetic & Optical Ignition)(Galant, Montero 3.0L & Pickup 3.0L)
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.

Fig 3: Ignition Coil Terminal Identification (Magnetic & Optical Ignition)(Montero 2.6L)
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.

Fig 4: Ignition Coil Terminal Identification (Magnetic & Optical Ignition)(Van/Wagon)
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.

Fig 5: Testing Power Transistor (Magnetic & Optical Ignition)
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.