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Home >> Buick >> 2017 >> Envision Base >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Wiper/Washer Systems >> Wiper System And Washer System >> Diagnostic Information and Procedures >> Windshield Wiper System Malfunction >> Circuit/System Verification

Circuit/System Verification

  1. Ignition ON.
  2. Verify the scan tool Windshield Wiper High Speed Switch parameter changes between Active and Inactive when activating the high speed windshield wipers.
    • If the parameter does not change 

      Refer to Circuit/System Testing - Windshield Wiper Switch Malfunction.

    • If the parameter changes 
  3. Verify the scan tool Windshield Wiper Switch parameter changes between Off and Low when activating the low speed windshield wipers.
    • If the parameter does not change 

      Refer to Circuit/System Testing - Windshield Wiper/Washer Switch Malfunction.

    • If the parameter changes 
  4. Verify the scan tool Windshield Wiper Switch parameter changes between Delay 1 and Delay 5 when cycling the intermittent speed windshield wipers.
    • If the parameter does not change 

      Test or replace the S82 Windsheild Wiper/Washer Switch.

    • If the parameter changes 
  5. Verify the M75 Windshield Wiper Motor changes between Off, Low, and High when cycling the S82 Windshield Wiper/Washer Switch between Off, Low, and High.
    • If the M75 Windshield Wiper Motor does not cycle between Off, Low, and High 

      Refer to Circuit/System Testing - Windshield Wiper Motor Malfunction

    • If the M75 Windshield Wiper Motor cycles between Off, Low, and High 
  6. Ignition OFF.
  7. Verify the scan tool Windshield Wiper Park Switch parameter is Active.
    • If the parameter does not change 

      Refer to Circuit/System Testing - Windshield Wiper Motor Malfunction.

    • If the parameter changes 
  8. All OK.
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