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Home >> Cadillac >> 2014 >> XTS Base >> 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.
  2. Verify DTC U151A is not set.
    • If DTC U151A is not set 
  3. Verify the wipers operate at low speed when the Windshield Wiper Switch is in the LOW position.
    • If the wipers are operating at low speed 
  4. Place the Windshield Wiper Switch in the delay mode/moisture sensitivity settings Delay 1 through Delay 5 and spray the outside of the windshield in the rear view mirror/rain sensor region with a water bottle.
  5. Verify the wipers operate at low speed.
    • If the wipers are not operating at low speed 

      Test or replace the B117 Rain Sensor.

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