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Wiper Motor

  1. Turn ignition switch to LOCK position. Disconnect wiper motor harness. Using a jumper wire, ground terminal No. 3 (Black wire terminal) at wiper motor. Using a second jumper wire and in-line ammeter, connect battery voltage to terminal No. 5 (White/Blue wire terminal) at wiper motor. Wiper motor should operate at high speed and should draw 4 amps or less. If wiper motor operation is as specified, go to next step. If wiper motor operation is not as specified, replace wiper motor.
  2. Move battery voltage lead from terminal No. 5 at wiper motor to terminal No. 4 (White/Green wire terminal) at wiper motor. Wiper motor should operate at low speed and draw 2 amps or less. If wiper motor operation is as specified, disconnect jumper wires and go to next step. If wiper motor operation is not as specified, replace wiper motor.
  3. Ensure wiper motor is not in park position. Measure resistance between terminals No. 1 (White/Black wire terminal) and No. 2 (White/Green wire terminal) at wiper motor. Resistance should be 5 ohms or less. If resistance is as specified, go to next step. If resistance is not as specified, replace wiper motor.
  4. Measure resistance between terminals No. 1 (White/Black wire terminal) and No. 3 (Black wire terminal) at wiper motor. Resistance should be 5 ohms or less. If resistance is not as specified, replace wiper motor. If resistance is as specified, wiper motor is okay at this time.
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