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Home >> Hummer >> 2008 >> H2 4D Utility Wagon >> Repair and Diagnosis >> Heating, Ventilation & A/C (HVAC) >> HVAC Control Systems >> HVAC - Automatic >> Diagnostic Information and Procedures >> DTC B0228, B0413, B0423, B0433, B3779, or B3782 >> Diagnostic Fault Information

Diagnostic Fault Information

Circuit Short to Ground Open/High Resistance Short to Voltage Signal Performance
Recirculation 5-Volt Reference Circuit B0228 02, B0413 02, B0423 02, B0433 02, B0228 02, B3782 02 or B3779 02 B0228 05 B0228 02, B0413 02, B0423 02, B0433 02, B0228 02, B3782 02 or B3779 02 B0228 61
Recirculation Door Position Signal B0228 02 B0228 05 B0228 05 B0228 61
Recirculation Door Control A Circuit B0228 02 B0228 05 B0228 05 B0228 61
Recirculation Door Control B Circuit B0228 02 B0228 05 B0228 05 B0228 61
Recirculation Low Reference Circuit B0228 02 B0228 05 B0228 05 B0228 61
Driver Air Temperature 5-Volt Reference Circuit B0228 02, B0413 02, B0423 02, B0433 02, B0228 02, B3782 02 or B3779 02 B0413 05 B0228 02, B0413 02, B0423 02, B0433 02, B0228 02, B3782 02 or B3779 02 B0413 61
Driver Air Temperature Door Position Signal B0413 02 B0413 05 B0413 05 B0413 61
Driver Air Temperature Door Control A Circuit B0413 02 B0413 05 B0413 05 B0413 61
Driver Air Temperature Door Control B Circuit B0413 02 B0413 05 B0413 05 B0413 61
Driver Air Temperature Low Reference Circuit B0413 02 B0413 05 B0413 05 B0413 61
Passenger Air Temperature 5-Volt Reference Circuit B0228 02, B0413 02, B0423 02, B0433 02, B0228 02, B3782 02 or B3779 02 B0423 05 B0228 02, B0413 02, B0423 02, B0433 02, B0228 02, B3782 02 or B3779 02 B0423 61
Passenger Air Temperature Door Position Signal B0423 02 B0423 05 B0423 05 B0423 61
Passenger Air Temperature Door Control A Circuit B0423 02 B0423 05 B0423 05 B0423 61
Passenger Air Temperature Door Control B Circuit B0423 02 B0423 05 B0423 05 B0423 61
Passenger Air Temperature Low Reference Circuit B0423 02 B0423 05 B0423 05 B0423 61
Mode 5-Volt Reference Circuit B0228 02, B0413 02, B0423 02, B0433 02, B0228 02, B3782 02 or B3779 02 B3779 05 B0228 02, B0413 02, B0423 02, B0433 02, B0228 02, B3782 02 or B3779 02 B3779 61
Mode Door Position Signal B3779 02 B3779 05 B3779 05 B3779 61
Mode Door Control A Circuit B3779 02 B3779 05 B3779 05 B3779 61
Mode Door Control B Circuit B3779 02 B3779 05 B3779 05 B3779 61
Mode Low Reference Circuit B3779 02 B3779 05 B3779 05 B3779 61
Auxiliary Air Temperature 5-Volt Reference Circuit B0228 02, B0413 02, B0423 02, B0433 02, B0228 02, B3782 02 or B3779 02 B0433 05 B0228 02, B0413 02, B0423 02, B0433 02, B0228 02, B3782 02 or B3779 02 B0433 61
Auxiliary Air Temperature Door Position Signal B0433 02 B0433 05 B0433 05 B0433 61
Auxiliary Air Temperature Door Control A Circuit B0433 02 B0433 05 B0433 05 B0433 61
Auxiliary Air Temperature Door Control B Circuit B0433 02 B0433 05 B0433 05 B0433 61
Auxiliary Air Temperature Low Reference Circuit B0433 02 B0433 05 B0433 05 B0433 61
Auxiliary Mode 5-Volt Reference Circuit B0228 02, B0413 02, B0423 02, B0433 02, B0228 02, B3782 02 or B3779 02 B3782 05 B0228 02, B0413 02, B0423 02, B0433 02, B0228 02, B3782 02 or B3779 02 B3782 61
Auxiliary Mode Door Position Signal B3782 02 B3782 05 B3782 05 B3782 61
Auxiliary Mode Door Control A Circuit B3782 02 B3782 05 B3782 05 B3782 61
Auxiliary Mode Door Control B Circuit B3782 02 B3782 05 B3782 05 B3782 61
Auxiliary Mode Low Reference Circuit B3782 02 B3782 05 B3782 05 B3782 61
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