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Home >> GMC >> 2015 >> Terrain SL, Gas >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Wiper/Washer Systems >> Wiper System And Washer System >> Diagnostic Information and Procedures >> DTC B3873: Front Washer Relay Circuit Short to Battery >> Circuit/System Verification
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Circuit/System Verification

  1. Ignition ON.
  2. Verify the scan tool Windshield Washer Switch parameter changes between Active and Inactive when pressing the Windshield Washer Switch.
    • If the parameter does not change 

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

    • If the parameter changes 
  3. Verify the Windshield Washers turn On when commanding the Windshield Washer Relay Active with a scan tool.
    • If the Windshield Washers do not turn ON 

      Refer to Circuit/System Testing - Windshield Washer Pump Malfunction

    • If the Windshield Washers turn ON 
  4. All OK.
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