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Home >> GMC >> 2017 >> Acadia SL >> Repair and Diagnosis (Single Page) >> External Pages >> Different car >> Section 1 (Object Detection System And Pedestrian Protection System) >> Diagnostic Information and Procedures >> Parking Assist System Malfunction >> Circuit/System Verification
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Circuit/System Verification

WARNING: This page is about a different car, the 2016 Cadillac ATS. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition ON.
  2. Verify the scan tool Park Assist Switch parameter while pressing and releasing the parking assist switch. The parameter should change between Active and Inactive.
    • If the parameter does not change between Active and Inactive 

      Refer to Circuit/System Testing - Parking Assist Switch Circuit Malfunction.

    • If the parameter changes between Active and Inactive 
  3. Command the Park Assist Switch LED output control On and Off with the scan tool. The parking assist switch indicator should turn On and Off when changing between the commanded states.
    • If the indicator does not turn ON and OFF 

      Refer to Circuit/System Testing - Parking Assist Switch Indicator Circuit Malfunction.

    • If the indicator does turn ON and OFF 
  4. Transmission in R, verify the Engine Control Module (ECM) scan tool Reverse Position Switch parameter is Active.
    • If the parameter is Active 
  5. Transmission in R, verify the scan tool Park Assist System Status parameter displays Enable.
    • If the parameter is not Enabled 

      Refer to Diagnostic Aids to determine the cause.

    • If the parameter is Enabled 
  6. All OK.
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