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Home >> Cadillac >> 2017 >> CT6 Plug-In >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Wiper/Washer Systems >> Wiper System And Washer System >> Diagnostic Information and Procedures >> DTC B370A: Rain Sensor >> Circuit/System Verification

Circuit/System Verification

  1. Ignition ON/Vehicle in Service Mode.
  2. Verify DTC U151A is not set.
    • If the DTC is not set 
  3. Place the S82 Windshield Wiper/Washer Switch in the intermittent delay setting and spray the outside of the windshield in the area of the B177 Rain Sensor with a water bottle. It may be necessary to increase the sensitivity of the intermittent delay to achieve windshield wiper operation.
  4. Verify the windshield wipers operate at low speed.
    • If the wipers are not operating at low speed 

      Refer to Circuit/System Testing.

    • If the wipers are operating at low speed 
  5. All OK.
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