Table 1: | HVAC Control Module Scan Tool Data Parameters |
Table 2: | HVAC Control Module Scan Tool Output Controls |
Parameter | System State | Expected Value | Description |
---|---|---|---|
Operating Conditions: Ignition ON, HVAC OFF | |||
A/C Request | -- | No | The scan tool displays Yes or No. Yes is displayed if the air conditioner is requested. |
A/C Evap. Temperature Sensor | -- | Varies | This displays °F (°C). This is the current temperature of the evaporator temperature sensor. |
A/C High Side Pressure Sensor | -- | Varies | This displays kPa (psi). The voltage applied to the ECM input from the A/C refrigerant pressure sensor is converted to a pressure value. |
Ambient Air Temp. Sensor | -- | Varies | This displays °F (°C). This is the current temperature at the ambient air temperature sensor. |
Blower Motor Speed | -- | 0% | This displays %. This is the actual blower motor speed measured in percentage. |
Blower Motor Speed Command | -- | 0% | This displays %. This is the commanded blower motor speed measured in percentage. |
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 driver temperature door motor request measured in counts. |
Driver Temp. Dr. Position | -- | Varies | This displays Counts or Pulses. This is the current driver temperature door position measured in either counts or pulses. |
Inside Air Temp. Sensor | -- | Varies | This displays °F (°C). This is the current temperature at the inside air temperature sensor. |
Left Sunload Sensor | -- | Varies | This displays Counts. This is the current sunload measured in counts at the driver sunload sensor. |
Mode Door Position | -- | Varies | This displays Counts or Pulses. This is the current mode door position measured in either counts or pulses. |
Mode Dr. Motor Command | -- | Varies | This displays Counts. This is the commanded mode door motor request measured in counts. |
Psgr. Temp. Dr. Motor Command | -- | Varies | This displays Counts. This is the commanded passenger temperature door motor request measured in counts. |
Psgr. Temp. Dr. Position | -- | Varies | This displays Counts or Pulses. This is the current passenger temperature door position measured in either counts or pulses. |
Recirculation Dr. Motor Command | -- | Varies | This displays Counts. This is the commanded recirculation temperature door motor request measured in counts. |
Recirculation Dr. Position | -- | Varies | This displays Counts or Pulses. This is the current recirculation temperature door position measured in either counts or pulses. |
Right Sunload Sensor | -- | Varies | This displays Counts. This is the current sunload measured in counts at the passenger sunload sensor. |
Vehicle Speed | -- | 0 km/h (0 mph) | This displays km/h (mph). This is the current vehicle speed. |
Output Control | Description |
---|---|
Blower Motor | The scan tool displays Off or On selections. This function allows you to command the blower motor to its maximum (100%) or minimum (0%) speeds for 5 seconds. |
Driver Temp. Door | The scan tool displays On or Off selections. The selection drives the actuator to its minimum (cold) or maximum (hot) positions for 20 seconds. |
Inside Air Temp. Sensor Fan | The scan tool displays Commanded State: On or Off. This function allows you to command the inside air temperature sensors fan On and Off. |
Mode Door Position | The scan tool displays On or Off selections. This function drives the actuator to its minimum (defrost) or maximum (upper) positions for 20 seconds. |
Passenger Temp. Door | The scan tool displays On or Off selections. The selection drives the actuator to its minimum (hot) or maximum (cold) positions for 20 seconds. |
Rear Defog Request | The scan tool displays Commanded State: On or Off. This function allows you to command the rear defog On and Off. |
Recirculation Door | The scan tool displays On or Off selections. This function drives the actuator to its minimum (outside air) or maximum (recirculate) stops for 20 seconds. |
Segment Check | The scan tool displays Commanded State: On or Off. This function allows you to illuminate all segments on the HVAC control modules display. |