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Home >> Buick >> 2016 >> Encore Base, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 74 (Wiper System And Washer System) >> Diagnostic Information and Procedures >> DTC B3811: Rear Washer Relay >> Circuit/System Verification
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Circuit/System Verification

WARNING: This page is about a different car, the 2015 Chevrolet Trax and 2015 Buick Encore. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition ON.
  2. Verify the Scan Tool Rear Closure Ajar Switch Parameter changes between Inactive and Active when Opening and closing the liftgate.
    • If the parameter changes 
  3. Verify the scan tool Rear Wiper Switch parameter changes between On and Off when cycling the rear wiper switch ON and OFF.
    • If the parameter changes 
  4. Verify the G24 Windshield Washer Pump turns on and off when commanding the rear washers OFF and ON with the rear washer switch
    • If the Rear Window Washers do not turn ON 

      Refer to Circuit/System Testing

    • If the Rear Window Washers turn ON 
  5. All OK.