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Home >> GMC >> 2018 >> Acadia Denali, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 223 (Wiper System And Washer System) >> Diagnostic Information and Procedures >> Headlamp Washer Malfunction >> Circuit/System Verification

Circuit/System Verification

WARNING: This page is about a different car, the 2017 Cadillac ATS. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition ON.
  2. Verify the headlamps washers turn ON and OFF when commanding the Headlamp Washer Relay Command On and Off with a scan tool.
    • If the headlamp washers do not turn ON and OFF 

      Refer to Circuit/System Testing

    • If the headlamp washers turn ON and OFF 
  3. All OK.
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