Heating, Ventilation and Air Conditioning Control Module Scan Tool Information
WARNING: This page is about a different car, the 2013 Cadillac CTS. However, it is still accessible from the selected car via links, so may be relevant.
HVAC Control Module Scan Tool Data Parameters
| Parameter | Expected Value | Description |
|---|---|---|
| Operating Conditions: Engine ON | ||
| A/C Compressor | Disengaged | The scan tool displays Engaged or Disengaged. This is the current state of the air conditioner compressor. |
| A/C Evap. Temperature Sensor | Varies | This displays °F (°C). This is the current temperature of the evaporator sensor. |
| A/C Head Pressure | Normal | The scan tool displays Out of Range or Normal. This is the current state of the air conditioner head pressure. |
| A/C High Side Pressure Sensor | Varies | This displays kPa (psi). This is the current pressure at the high side sensor. |
| A/C Permission | Varies | The scan tool displays Withheld or Granted. |
| A/C Request | No | The scan tool displays Yes or No. Yes is displayed if the air conditioner is requested. |
| Blower Motor Speed | Varies | This displays %. This is the current blower motor speed percentage. |
| Blower Speed | Off | The scan tool displays Normal or Off. This is the current state of the blower speed. |
| Coolant Temperature | Varies | This displays °F (°C). This is the current temperature of the engine coolant. |
| Driver Temp. Dr. Motor Command | Varies | This displays Counts. This is the commanded state of the driver door motor measured in counts. |
| Driver Temp. Dr. Position | Varies | This displays Counts. This is the current state of the driver door position measured in counts. |
| Driver Temp. Setting | Varies | This displays °F (°C). This is the current setting of the driver side temperature. |
| Inside Air Temp. Filter | Varies | This displays °F (°C). This is the current inside air temperature filter. |
| Inside Air Temp. Sensor | Varies | This displays °F (°C). This is the current inside air temperature sensor. |
| Left Sunload Sensor | Varies | This displays Counts. This is the current state of the left sunload sensor measured in counts. |
| Mode Door Position | Varies | This displays Counts. This is the current position of the mode door measured in counts. |
| Mode Dr. Motor Command | Varies | This displays Counts. This is the commanded state of the mode door motor measured in counts. |
| Outside Air Temp. Filtered | Varies | This displays °F (°C). This is the current filtered outside air temperature sensor. |
| Outside Air Temp. Raw | Varies | This displays °F (°C). This is the current raw outside air temperature sensor. |
| Passenger Temp. Setting | Varies | This displays °F (°C). This is the current setting of the passenger side temperature. |
| Psgr. Temp. Dr. Motor Command | Varies | This displays Counts. This is the commanded state of the passenger door motor measured in counts. |
| Psgr. Temp. Dr. Position | Varies | This displays Counts. This is the current state of the passenger door position measured in counts. |
| Rear Defrost State | Off | The scan tool displays On or Off. This is the current state of the rear defrost. |
| Recirculation Dr. Motor Command | Varies | This displays Counts. This is the commanded state of the recirculation door motor measured in counts. |
| Recirculation Dr. Position | Varies | This displays Counts. This is the current position of the recirculation door measured in counts. |
| Right Sunload Sensor | Varies | This displays Counts. This is the current state of the right sunload sensor measured in counts. |
| Vehicle Speed | 0 km/h (0 mph) | The scan tool displays km/h (mph). This is the current vehicle speed. |
| Water Pump Relay | On | The scan tool displays On or Off. This is the current state of the water pump relay. |
HVAC Control Module Scan Tool Output Controls
| Output Control | Description |
|---|---|
| Blower Motor | This output control is used to command the blower motor. |
| Driver Temp. Door | This output control is used to command the driver temperature door. |
| Mode Door Position | This output control is used to command the mode door position. |
| Passenger Temp. Door | This output control is used to command the passenger temperature door. |
| Power Down Now | This output control is used to power down the HVAC system. |
| Rear Defog Request | This output control is used to command the rear defogger. |
| Recirculation Door | This output control is used to command the recirculation door. |
| Segment Check | This output control is used to command the segment check. |
| Water Pump Control | This output control is used to command the water pump. |