Scan Tool Testing and Procedures

Scan Tool Data


A/C Control Module


As the data values given in the following are standard values estimated on the basis of values obtained from the normally operation vehicles by using a scan tool, use them as reference values. Even when the vehicles are in good condition, there may be cases where the checked values do not fall within each specifies data range. Therefore, judgement as abnormal should not be made by checking with these data alone.











Scan Tool Data Definitions

Temp Cont Switch: (Temperature control selector position, Max Cool, °C / °F, Max Hot)

This parameter indicates the selected position of temperature control selector.

Mode Cont Switch (Air flow selector position, AUTO, FACE, B/L, FOOT, D/F, DEF)

This parameter indicates the selected position of air flow selector.

Fan Cont Switch (Blower speed selector, AUTO, OFF, 1st - 8th)

This parameter indicates the selected position of blower speed selector.

Air Intake Mode (Air intake selector position, AUTO, FRE, REC)

This parameter indicates the selected position of air intake switch.

Vehicle Speed (km/h, mph)

This parameter indicates the vehicle speed calculated by ECM.

ECT (Engine coolant temperature °C, °F)

This parameter indicates the engine coolant temperature measured by engine coolant temperature sensor.

Engine Type (Engine type signal, J20)

This parameter indicates the engine type signal transmitted by ECM.

Meter Spec (Combination meter spec signal, US, CA, MX)

This parameter indicates the combination meter spec signal transmitted by combination meter.

Outside Air Temp (Outside air temperature, °C, °F)

This parameter indicates the outside air temperature measured by outside air temperature sensor.

Cabin Temperature (In-car temperature, °C, °F)

This parameter indicates the in-car temperature measured by inside air temperature sensor.

Sun Load (W/m2)

This parameter indicates the amount of sunlight measured by sunload sensor.

Evaporator Temp (Evaporator temperature, °C, °F)

This parameter indicates the temperature of air passed through evaporator.

Refrigerant Pressure (A/C refrigerant absolute pressure, kPa)

This parameter indicates the A/C refrigerant absolute pressure calculated by ECM

Air Mix Pos Sen (Temperature control actuator position sensor, V)

This parameter indicates the input signal from position sensor in temperature control actuator.

Mode Pos Sensor (Air flow control actuator position sensor, V)

This parameter indicates the input signal from position sensor in air flow control actuator.

Fan Desired Volt (Fan desired voltage, V)

This parameter indicates the consumption voltage of blower motor.

A/C Cont Sig (A/C control signal, ON, OFF)

This parameter indicates the status of A/C switch.

Blower Load Sig (Blower fan load signal, ON, OFF)

ON: Position of blower speed selector is 1st position or more.

OFF: Position of blower speed selector is OFF position.

A/C Comp Clutch (A/C compressor magnet clutch, ON, OFF)

This parameter indicates the status of the A/C compressor magnet clutch.