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Home >> GMC >> 2018 >> Acadia Denali, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 171 (Instrument Panel System Displays And Gauges) >> Diagnostic Information and Procedures >> Outside Air Temperature Display Malfunction (without LTG, LCV, LD4, or LGX) >> 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/Vehicle In Service Mode
  2. Verify the scan tool parameter: Ambient Air Temperature = -40 to 88°C (-40 to 190°F) and changes
    • If not between -40 to 88°C (-40 to 190°F) or does not change 

      Refer to: Circuit/System Testing

    • If between -40 to 88°C (-40 to 190°F) and changes 
  3. Perform the special tool function: Ambient Air Temperature Instant Update
  4. Verify the following parameter is within 5°C (8°F) of the actual ambient air temperature: Ambient Air Temperature
    • If not within 5°C (8°F) of the actual ambient air temperature 

      Refer to: Circuit/System Testing

    • If within 5°C (8°F) of the actual ambient air temperature 
  5. All OK.
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