Circuit/System Verification

Ignition ON/Vehicle in Service Mode.
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/Washer Switch Malfunction.
- If the parameter changes
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
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 Windshield Wiper/Washer Switch.
- If the parameter changes
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
Ignition OFF/Vehicle OFF.
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
All OK.