| Table 1: | HVAC Scan Tool Data List |
| Table 2: | BCM Scan Tool Data List |
| Table 3: | PCM Scan Tool Data List |
Use the Scan Tool Data Display Values and Definitions Information in order to assist in diagnosing the HVAC system. Compare the vehicles actual scan tool data with the typical data display value table information. Use the data information in order to aid in understanding the nature of the problem when the vehicle does not match with the typical data display values.
The scan tool data values were taken from a known good vehicle under the following conditions:
| • | The ignition switch is in the ON position. |
| • | The engine is running at idle. |
| • | The vehicle is in PARK. |
| • | The doors are closed. |
| • | The windows are closed. |
| • | The A/C is ON. |
| • | The ambient air temperatures are at 22-27°C (70-80°F). |
Scan Tool Parameter | Data List | Units Displayed | Typical Data Value |
|---|---|---|---|
A/C Requested | HVAC Sensors °F and °C | Varies | |
Air Inlet Dr Actual | HVAC Door Positions/HVAC Door Calibrations | Volts | Varies |
Air Inlet Dr Commanded | HVAC Door Positions | Volts | Varies |
Coolant Temperature | HVAC Sensors °F and °C | °F | Varies |
Commanded Blower | HVAC Sensors °F and °C | % | Varies |
Driver Program Number | HVAC Sensors °F and °C | Counts | Varies |
Inside Air Temp | HVAC Sensors °F and °C/Open Short Data °F and °C | °F | Varies |
Left AC Duct Temp | HVAC Sensors °F and °C/Open Short Data °F and °C | °F | Varies |
Left Duct Temp Desired | HVAC Sensors °F and °C/Open Short Data °F and °C | °F | Varies |
Left Htr. Duct Temp. | HVAC Sensors °F and °C/Open Short Data °F and °C | °F | Varies |
Left Solar | HVAC Sensors °F and °C/Open Short Data °F and °C | Counts | Varies |
Left Temp Dr Actual | HVAC Door Positions/HVAC Door Calibrations | Volts | Varies |
Left Temp. Dr. Commanded | HVAC Door Positions | Volts | Varies |
Mode Dr. Motor Command | HVAC Door Positions | Volts | Varies |
Mode Door Position | HVAC Door Positions/HVAC Door Calibrations | Volts | Varies |
Outside Air Temp | HVAC Sensors °F and °C/Open Short Data °F and °C | °F | Varies |
Psgr. Program Number | HVAC Sensors °F and °C | Counts | Varies |
Remote Start Request | HVAC Sensors °F and °C | Dis. | Varies |
Right AC Duct Temp | HVAC Sensors °F and °C/Open Short Data °F and °C | °F | Varies |
Right Duct Temp Desired | HVAC Sensors °F and °C/Open Short Data °F and °C | °F | Varies |
Right Htr. Duct Temp. | HVAC Sensors °F and °C/Open Short Data °F and °C | °F | Varies |
Right Solar | HVAC Sensors °F and °C/Open Short Data °F and °C | Counts | Varies |
Right Temp Dr Actual | HVAC Door Positions/HVAC Door Calibrations | Volts | Varies |
Right Temp. Dr. Commanded | HVAC Door Positions | Volts | Varies |
Selected Air Mode | HVAC Sensors °F and °C | Auto | Varies |
System Program Number | HVAC Sensors °F and °C | Varies | |
Vehicle Speed Signal | HVAC Sensors °F and °C | mph | Varies |
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 Switch | Inputs | Active/Inactive | Off |
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 High Side Pressure Sensor | Engine Data 2 | kPa/psi | Varies |
A/C High Side Pressure Sensor | Engine Data 2 | Volts | Varies |
A/C Off For WOT | Engine Data 2 | Yes/No | No |
A/C Pressure Disable | Engine Data 2 | Yes/No | No |
A/C Relay Circuit Status | Output Driver Data | OK/Fault | OK |
A/C Relay Command | Engine Data 1/Engine Data 2/EGR Data/Misfire Data | On/Off | On |
A/C Request Signal | Engine Data 2 | Yes/No | Yes |
