Power Window Switch: Testing and Inspection

1987 Dodge Shadow L4-135 2.2L SOHC TurboSECTION Testing and Inspection

1. Test the master switch as follows:
a. Remove the switch from its mounting. Turn the ignition switch to the "ON" position. Leave the wiring harness connected to the switch and connect a test light between the TN wire and BK wire.
^ If the test light does not come on or is dim, check the circuit breaker and the wiring to the switch.
^ If the test light comes on, go to step 1b.

b. Move the master switch through all window positions and check for power available at the proper wire terminals:
LB left up
WT left down
BR right up
VT right down

^ If the power output from the master switch is incorrect, the master switch is defective.

RENDER: 1.0x

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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.