| Table 1: | HVAC Control Module Scan Tool Data Parameters |
| Table 2: | HVAC Control Module Scan Tool Output Controls |
Parameter | System State | Expected Value | Definition |
|---|---|---|---|
Operating Conditions : Engine ON | |||
A/C Head Pressure | -- | Normal | The scan tool displays Normal or Out of Range. |
A/C LED | -- | Varies | The scan tool displays On or Off. This is the current state of the A/C indicator LED. |
A/C Request | -- | No | The scan tool displays Yes or No. Yes is displayed if the air conditioning is requested. |
Ambient Air Temperature | -- | Normal | The scan tool displays Normal or Out of Range. |
Ambient Air Temp. Sensor | -- | Varies | The scan tool displays °C (°F). This is the outside air temperature. |
Battery Voltage | -- | Normal | The scan tool displays Normal or Out of Range. |
Blower Motor Speed Command | -- | Varies | The scan tool displays 0-100 percent. This is the numeric value in percent of the blower motor speed as commanded by the HVAC module. |
Blower Speed | -- | Normal | The scan tool displays Normal or Off. |
Coolant Temperature | -- | Varies | This displays °C (°F). This is the current temperature of the engine coolant. |
Driver Heated Seat Switch | -- | Inactive | The scan tool displays Inactive or Active. This is the current state of the driver heated seat switch. |
Driver Temp. Dr. Motor Command | -- | Varies | This displays counts. This is the numeric value of the driver temperature door commanded by the HVAC module. |
Driver Temp. Dr. Position | -- | Varies | This displays counts. This is the current value of the driver temperature door as monitored by the HVAC module. |
Engine Coolant Temp | -- | Normal | The scan tool displays Normal or Out of Range. |
Engine Running | -- | Yes | The scan tool displays Yes or No. |
Mode Dr. Motor Command | -- | Varies | This displays counts. This is the numeric value of the mode door commanded by the HVAC module. |
Mode Door Position | -- | Varies | This displays counts. This is the current value of the mode door as monitored by the HVAC module. |
Mode Select Position | -- | Varies | The scan tool displays Invalid, Auto, Panel, Bi-Level, Heater, Htr./Def., or Defrost. This is the current position of the mode select switch. |
Outside Air LED | -- | Off | The scan tool displays On or Off. This is the current state of the outside air indicator LED. |
Outside Air Temp. | -- | Varies | This displays °C (°F). This is the raw value of the outside air temperature. |
Passenger Heated Seat Switch | -- | Inactive | The scan tool displays Inactive or Active. This is the current state of the passenger heated seat switch. |
Psgr. Temp. Dr. Motor Command | -- | Varies | This displays counts. This is the numeric value of the passenger temperature door commanded by the HVAC module. |
Psgr. Temp. Dr. Position | -- | Varies | This displays counts. This is the current value of the passenger temperature door as monitored by the HVAC module. |
Rear Defrost LED | -- | Varies | The scan tool displays On or Off. This is the current state of the rear defrost indicator LED. |
Rear Defrost State | -- | Off | The scan tool displays On or Off. This is the current state of the rear defroster. |
Recirculation Dr. Motor Command | -- | Varies | This displays counts. This is the numeric value of the recirculation door commanded by the HVAC module. |
Recirculation Dr. Position | -- | Varies | This displays counts. This is the current value of the recirculation door as monitored by the HVAC module. |
Recirculation LED | -- | Varies | The scan tool displays On or Off. This is the current state of the recirculation mode indicator LED. |
Temperature Dr. Motor Command | -- | Varies | This displays counts. This is the numeric value of the temperature door commanded by the HVAC module. |
Temperature Dr. Position | -- | Varies | This displays counts. This is the current value of the temperature door as monitored by the HVAC module. |
Vehicle Speed | -- | Varies | This displays the current vehicle speed in MPH. |
Scan Tool Output Control | Description |
|---|---|
A/C LED | This command allows you to turn the A/C LED On and Off. |
A/C Request | This command allows you to turn the A/C relay On and Off. When the A/C relay is commanded On, the A/C compressor clutch should be engaged. |
Air Inlet Door Position | The scan tool displays On or Off selections. The selection drives the actuator to its minimum or maximum positions. |
All Status LEDs | This command allows you to turn the all HVAC status LEDs On and Off. |
Blower Motor | The scan tool displays Off or On selections. This function allows you to command the blower motor to its maximum or minimum speeds. |
Driver Heated Seat LED | This command allows you to turn the driver heated seat LED On and Off. |
Left Temp. Door Position | The scan tool displays On or Off selections. The selection drives the actuator to its minimum or maximum positions. |
Mode Door Position | The scan tool displays On or Off selections. The selection drives the actuator to its minimum or maximum positions. |
Psgr. Heated Seat LED | This command allows you to turn the passenger heated seat LED On and Off. |
Rear Defog LED | This command allows you to turn the rear defog LED On and Off. |
Recalibrate All Motors | When ON is selected, all air temp and mode actuators have the capability to perform a recalibration. |
Recirc. LED | This command allows you to turn the recirculation LED On and Off. |
Right Temp. Door Position | The scan tool displays On or Off selections. The selection drives the actuator to its minimum or maximum positions. |
