Power Transistor

Disconnect power transistor connector. Using a 1.5-volt dry cell battery, connect negative end of 1.5-volt battery to terminal No. 5 of power transistor and positive end to terminal No. 6. See Fig 1 .
Using an analog ohmmeter, check for continuity between terminals No. 5 and 12 of power transistor. Continuity should exist. With positive end of 1.5-volt battery disconnected, there should be no continuity. Replace power transistor if it fails test.

Fig 1: Power Transistor Connector ID (Except DIS - All Models)
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA