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Home >> Hummer >> 2008 >> H2 4D Utility Wagon >> Repair and Diagnosis >> External Pages >> Different car >> Section 453 (HVAC System - Manual) >> Diagnostic Information and Procedures >> DTC B3933 >> Component Testing

Component Testing

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  1. Ignition OFF, disconnect the harness connector at the evaporator temperature sensor.
  2. Measure the resistance between terminal A and terminal B.
  3. Verify the resistance is within 5 % of the specified readings contained in the Sensor Resistance Table .
    • If not within 5 % 

      Replace the evaporator air temperature sensor

    • If within 5 % 
  4. All OK.