| 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 | |||
A/C Evap. Temperature Sensor | -- | Varies | This displays Counts. This is the evaporator temperature measured in counts. |
A/C LED | -- | Off | The scan tool displays On or Off. This is the state of the air conditioner light emitting diode (LED) indicator. |
A/C Request | -- | No | The scan tool displays Yes or No. Yes is displayed if the air conditioner is requested. |
Aux. Blower Motor Speed | -- | Varies | This displays Counts. This is the auxiliary blower motor speed measured in counts. |
Aux. Blower Motor Switch | -- | Off | The scan tool displays Invalid, Auxiliary, Off, 1, 2 or 3. This is the state of the auxiliary blower motor switch. |
Aux. Blower Mtr. Spd. Command | -- | Varies | This displays Counts. This is the commanded auxiliary blower motor speed measured in counts. |
Aux. Mode Door Actual | -- | Varies | This displays Counts. This is the actual auxiliary mode door position measured in counts. |
Aux. Mode Door Commanded | -- | Varies | This displays Counts. This is the commanded auxiliary mode door position measured in counts. |
Aux. Temp. Dr. Motor Command | -- | Varies | This displays Counts. This is the commanded auxiliary temperature door motor measured in counts. |
Aux. Temp. Dr. Position | -- | Varies | This displays Counts. This is the auxiliary temperature door position measured in counts. |
Blower Motor Switch | -- | Off | The scan tool displays Off, On, High or Invalid. This is the state of the blower motor switch. |
Defrost Door Actual | -- | Varies | This displays Counts. This is the actual defrost door position measured in counts. |
Defrost Door Commanded | -- | Varies | This displays Counts. This is the commanded defrost door position measured in counts. |
Driver Heated Seat Status | -- | Off | The scan tool displays High, Low or Off. This is the state of the driver heated seat. |
Driver Temp. Dr. Motor Command | -- | Varies | This displays Counts. This is the commanded driver temperature door motor measured in counts. |
Driver Temp. Dr. Position | -- | Varies | This displays Counts. This is the driver temperature door position measured in counts. |
Ignition Voltage Signal | -- | Varies | This displays Volts. This is the current ignition voltage signal. |
Mode Door Commanded | -- | Varies | This displays Counts. This is the commanded mode door position measured in counts. |
Mode Door Position | -- | Varies | This displays Counts. This is the current mode door position measured in counts. |
Mode Status | -- | Varies | The scan tool displays Invalid, Vent, Mix-Blend, Floor, Bi-Level, Defrost or Recirc. This is the mode status. |
Passenger Heated Seat Status | -- | Off | The scan tool displays High, Low or Off. This is the state of the passenger heated seat. |
Psgr. Temp. Dr. Motor Command | -- | Varies | This displays Counts. This is the commanded passenger temperature door motor measured in counts. |
Psgr. Temp. Dr. Position | -- | Varies | This displays Counts. This is the current passenger temperature door position measured in counts. |
Rear Defrost LED | -- | Off | The scan tool displays On or Off. This is the state of the rear defrost indicator. |
Recirculation Dr. Motor Command | -- | Varies | This displays Counts. This is the commanded recirculation door motor measured in counts. |
Recirculation Dr. Position | -- | Varies | This displays Counts. This is the recirculation door position measured in counts. |
Output Control | Description |
|---|---|
A/C Request | The HVAC control module sends out a A/C request signal to turn on the A/C compressor when you select ON. The request signal should stay active until commanded OFF. |
All Status LEDs | The scan tool displays Commanded State: On or Off. This function commands all LEDs On or Off. |
Auxiliary Air Temp. Door | The HVAC control module commands the auxiliary air temperature actuator towards 255 counts when you select ON. The HVAC control module commands the auxiliary air temperature actuator towards 0 counts when commanded OFF. |
Auxiliary Blower Motor | This functions commands Auxiliary Blower Motor On or Off. |
Auxiliary Mode Door | The HVAC control module commands the auxiliary Mode actuator towards 255 counts when you select ON. The HVAC control module commands the auxiliary Mode actuator towards 0 counts when commanded OFF. |
Defrost Mode | The HVAC control module commands the Defrost actuator towards 255 counts when you select ON. The HVAC control module commands the Defrost actuator towards 0 counts when commanded OFF. |
Left Temp. Door Position | The HVAC control module commands the left air temperature actuator towards 255 counts when you select ON. The HVAC control module commands the left air temperature actuator towards 0 counts when commanded OFF. |
Mode Door Position | The HVAC control module commands the Mode actuator towards 255 counts when you select ON. The HVAC control module commands the Mode actuator towards 0 counts when commanded OFF. |
Recalibrate All Motors | The scan tool displays Commanded State: None or On. This functions commands all actuators to their fully opened and fully closed positions, and relearns these endpoints. |
Recirculation Door | The HVAC control module commands the recirculation actuator towards 0 counts when you select ON. The HVAC control module commands the recirculation actuator towards 255 counts when you select OFF. |
Right Temp. Door Position | The HVAC control module commands the right air temperature actuator towards 255 counts when you select ON. The HVAC control module commands the right air temperature actuator towards 0 counts when commanded OFF. |
