Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSCADILLAC2011CTS V, 2D COUPE, STANDARDREPAIR AND DIAGNOSISGENERAL INFORMATIONOEM GENERAL INFORMATIONVEHICLE DIAGNOSTIC INFORMATION - SPECIFICATIONS - SCAN TOOL DATASPECIFICATIONSHEATING, VENTILATION AND AIR CONDITIONING CONTROL MODULE SCAN TOOL INFORMATION
2011 Cadillac CTS V, 2D Coupe, Standard
Heating, Ventilation and Air Conditioning Control Module Scan Tool Information
2011 Cadillac CTS V, 2D Coupe, StandardSECTION Heating, Ventilation and Air Conditioning Control Module Scan Tool Information
HVAC Control Module Scan Tool Data Parameters
| Parameter | System State | 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. |
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.