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Home >> Cadillac >> 2017 >> CT6 Plug-In >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Gauges & Instrument Panels >> Instrument Panel System Displays And Gauges >> Diagnostic Information and Procedures >> DTC P0071-P0074: Ambient Air Temperature Sensor (with HP9) >> Circuit/System Verification

Circuit/System Verification

  1. Vehicle in Service Mode.
  2. Verify the scan tool Hybrid/EV Powertrain Control Module 2 Ambient Air Temperature parameter is between -40°C (-40°F) and +60°C (+140°F) and changes with air temperature changes.
    • If not between -40°C (-40°F) and +60°C (+140°F) or changes with air temperature changes 

      Refer to Circuit/System Testing.

    • If between -40°C (-40°F) and +60°C (+140°F) and changes with air temperature changes 
  3. All OK.