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Home >> Hummer >> 2008 >> H2 4D Utility Wagon >> Repair and Diagnosis >> External Pages >> Different car >> Section 349 (HVAC System - Automatic) >> Diagnostic Information and Procedures >> DTC B3933 >> Circuit/System Verification

Circuit/System Verification

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  1. Ignition ON
  2. Verify the scan tool A/C Evaporator Temperature Sensor parameter is between-35°C (-39°F) and 85°C (185°F) and changes with evaporator air temperature changes.
    • If not between -35°C (-39°F) and 85°C (185°F) or does not change 

      Refer to Circuit/System Testing below.

    • If between -35°C (-39°F) and 85°C (185°F) changes 
  3. All OK
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