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Power Transistor

  1. Disconnect power transistor connector. Using a 1.5-volt dry cell battery, connect negative end of 1.5-volt battery to terminal No. 2 of power transistor and positive end of 1.5-volt battery to power transistor terminal No. 1. See Fig 1 .
  2. Using an analog ohmmeter, check for continuity between terminals No. 2 and 3 of power transistor. Continuity should exist. With positive end of 1.5-volt battery disconnected, no continuity should exist. Replace power transistor if it does not test as specified.
    Fig 1: Testing Power Transistor
    G90A15354Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
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