1990 Plymouth Laser Base, AutomaticFACTORY OEM SERVICE PROCEDURE

Power Transistor (2.0L) Test

  1. Using an ohmmeter, connect ohmmeter leads between power transistor terminals No. 1 and 3. Using a 1.5-volt dry cell battery, connect positive battery lead to power transistor terminal No. 2 and negative lead to terminal No. 3. Perform TEST 1. See Fig 1 .
  2. When dry cell battery is connected, ohmmeter should read continuity and when disconnected no continuity.
  3. Connect ohmmeter between power transistor terminals No. 6 and 3. Using a 1.5-volt dry cell battery, connect positive battery lead to power transistor terminal No. 5 and negative lead to terminal No. 3. Perform TEST 2. See Fig 1 . When dry cell battery is connected, ohmmeter should read continuity and no continuity when disconnected.
  4. Replace power transistor if it does not test as described.
Fig 1: Testing Power Transistor (2.0L)
G90I06317Courtesy of CHRYSLER MOTORS.
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Stop DIY work and contact a certified mechanic immediately if any of the following apply:

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