For 1990-2009 cars

#### HVAC Control Module Scan Tool Data List

Scan Tool Parameter | Data List | Units Displayed | Typical Data Value
--- | --- | --- | ---
Operating Conditions: Engine idling, A/C ON, ambient air temperature between 22-27°C (70-80°F)
A/C LED | System Data | Off/On | Varies
A/C Head Pressure | A/C Permission Data | Normal/Out of Range | Normal
A/C Permission | A/C Permission Data | Withheld/Granted | Varies
A/C Request | A/C Permission Data | No/Yes | Varies
A/C Switch | System Data | Inactive/Active | Varies
Ambient Air Temperature | A/C Permission Data | Normal/Out of Range | Normal
Air Inlet Door Actual | Door Positions | Counts | Varies
Air Inlet Door Commanded | Door Positions | 0 --255 Counts | Varies
Auxiliary Blower Motor PWM | System Data | % | Varies
Auxiliary LED | System Data | Off/On | Varies
Auxiliary Mode Door Commanded | Door Positions | 0 --255 Counts | Varies
Auxiliary Mode Switch Position | Inputs | Panel/Bilevel/Floor | Varies
Auxiliary Switch | Inputs | Inactive/Active | Varies
Auxiliary Temp Door Motor Command | Door Positions | 0 --255 Counts | Varies
Battery Voltage | A/C Permission | Normal/Out of Range | Normal
Blower Speed | A/C Permission | Normal/Off | Varies
Blower Motor Speed Command | System Data | % | Varies
Driver Heated Seat LED | System Data | Off/On | Off
Driver Heated Seat Status | System Data | Off/Low/High | Off
Driver Heated Seat Switch | Inputs | Inactive/Active | Inactive
Engine Coolant Temp | A/C Permission | Normal/Out of Range | Normal
Engine Running | A/C Permission | Yes/No | Varies
Inside Air Temp Sensor | Sensors | °C | Varies
Left Hand A/C Duct Actual Temp | Sensors | °C | Varies
Left Hand A/C Duct Desired Temp | Sensors | °C | Varies
Left Hand Heater Duct Actual Temp | Sensors | °C | Varies
Left Hand Heater Duct Desired Temp | Sensors | °C | Varies
Left Temp Door Commanded | Door Positions | 0-255 count | Varies
Left Sunload Sensor | Sensors | Counts | Varies
Low Pressure Switch | System Data | Open/Close | Close
Low Coolant Switch | System Data | Open/Close | Close
Mode Switch Position | Inputs | Auto/Panel/Bi-Level/Floor/Defrost-Floor | Varies
Mode Door Actual | Door Positions | Counts | Varies
Mode Door Commanded | Door Positions | 0-255 Count | Varies
Outside Air Temp Filtered | Sensors | °C | Varies
Outside Air LED | System Data | Off/On | Varies
Outside Air Temp RAW | Sensors | °C | Varies
Outside Air Mode Switch | Inputs | Inactive/Active | Varies
Passenger Heated Seat Status | System Data | Off/Low/High | Off
Passenger Heated Seat Switch | Inputs | Inactive/Active | Inactive
Passenger Heated Seat LED | System Data | Off/On | Off
Rear Defrost LED | System Data | Off/On | Off
Rear Defrost Switch | Inputs | Inactive/Active | Inactive
Rear Defrost State | System Data | Off/On | Off
Recirculation Switch | Inputs | Inactive/Active | Inactive
Right Sunload Sensor | Sensors | Counts | Varies