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Home >> Hummer >> 2009 >> H3 Base, Standard >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Wiper/Washer Systems >> Wiper System And Washer System >> Diagnostic Information and Procedures >> Windshield Wiper Washer System Malfunction >> Circuit Testing >> Washers Inoperative
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Washers Inoperative

  1. Display the Washer Switch parameter on the BCM Inputs data list.
  2. Ignition ON, verify that the Washer Switch parameter is On while the washer switch is pressed.
    • If the scan tool displays Off perform the windshield washer switch component test. If the switch tests normal repair the windshield washer pump control circuit from the switch to the BCM for an open/high resistance.
  3. Disconnect the windshield washer pump connector.
  4. A test lamp connected between the washer pump control circuits should illuminate while the washer switch is pressed.
    • If the test lamp does not illuminate repair the windshield washer pump control circuit from the BCM to the pump or the ground circuit for an open/high resistance.
  5. If all the circuits test normal replace the windshield washer pump.
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