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Home >> Chevrolet >> 2018 >> Spark LT, Automatic CVT Trans >> Repair and Diagnosis >> External Pages >> Different car >> Section 28 (Wiper System And Washer System) >> Diagnostic Information and Procedures >> Rear Washer System Malfunction >> Circuit/System Verification

Circuit/System Verification

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  1. Ignition ON.
  2. Verify the scan tool Rear Washer Relay Command parameter changes between Active and Inactive when cycling the rear washer switch ON and OFF.
    • If the parameter does not change 

      Refer to Circuit/System Testing - Rear Wiper/Washer Switch Malfunction

    • If the parameter changes 
  3. Verify the G24 Windshield Washer Pump turns on and off when commanding the Rear Washer Relay Inactive and Active with the scan tool
    • If the G24 Windshield Washer Pump does not turn ON and OFF 

      Refer to Circuit/System Testing - Rear Washer Pump Malfunction

    • If the G24 Windshield Washer Pump turns ON and OFF 
  4. All OK.
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