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Home >> Chevrolet >> 2021 >> Malibu L >> Repair and Diagnosis >> Accessories & Equipment >> Gauges & Instrument Panels >> Displays And Gauges >> Diagnostic Information and Procedures >> DTC B0158 >> Circuit/System Verification

Circuit/System Verification

  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 and 88° C (-40 and 190° F) or does not change 

      Refer to: Circuit/System Testing

    • Go to next step: If between -40 and 88° C (-40 and 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

    • Go to next step: If within 5° C (8° F) of the actual ambient air temperature 
  5. All OK.
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