Scan Tool Testing and Procedures

Scan Tool Data


HVAC Control Module


As the data shown in the following table are standard values of normal operation vehicle measured by SUZUKI scan tool, use them for reference. Even if a vehicle is in good condition, there may be cases where the measured values do not fall within the standard range depending on the condition. Therefore, judgment as abnormal should not be made by checking just with this data.
A/C System Performance Inspection









Scan Tool Data Definitions

TEMP CONT SWITCH (DRIVER): (Driver side temperature control selector position, Max cool, °C / °F, Max hot)
This parameter indicates the selected position of driver side temperature control selector.
TEMP CONT SWITCH (PASS): (Passenger side temperature control selector position, Max cool, °C / °F, Max hot)
This parameter indicates the selected position of passenger side temperature control selector.
MODE CONT SWITCH (Air flow selector position, AUTO, FACE, B/L, FOOT, DE - FO, DEF)
This parameter indicates the selected position of "MODE" switch.
FAN CONT SWITCH (Blower speed switch, AUTO, OFF, 1st - 8th)
This parameter indicates the selected position of blower speed switch.
AIR INTAKE MODE (Air intake switch 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 calculated by ECM.
OUTSIDE AIR TEMP (Outside air temperature, °C, °F)
This parameter indicates the outside air temperature calculated by BCM.
CABIN TEMPERATURE: (In-car temperature, °C, °F)
This parameter indicates the in-car temperature detected by inside air temperature sensor.
SUN LOAD (DRIVER) (W/m2)
This parameter indicates the amount of sunlight detected by sunload sensor on driver side.
SUN LOAD (PASS) (W/m2)
This parameter indicates the amount of sunlight detected by sunload sensor on passenger side.
EVAPORATOR TEMP (Evaporator temperature, °C °F)
This parameter indicates the temperature of air passed through evaporator calculated by BCM.
REFRIGERANT PRESSURE (A/C refrigerant absolute pressure, kPa)
This parameter indicates the A/C refrigerant absolute pressure calculated by ECM.
AIR MIX POS SEN (DRIVER) (Driver side temperature control actuator position sensor, V)
This parameter indicates the input signal from position sensor in driver side temperature control actuator.
AIR MIX POS SEN (PASS) (Passenger side temperature control actuator position sensor, V)
This parameter indicates the input signal from position sensor in passenger side 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.
R/F POS SENSOR (AIR INTAKE CONTROL ACTUATOR POSITION SENSOR)
This parameter indicates the input signal from position sensor in air intake control actuator.
FAN DESIRED VOLT (Fan desired voltage, V)
This parameter indicates the desired voltage of blower motor.
A/C CONT SIG (A/C control signal, ON, OFF)
This parameter indicates the state of A/C indicator.
REAR DEF INDICATOR (Rear DEF indicator, ON, OFF)
This parameter indicates the state of rear defogger indicator light.
A/C COMP CLUTCH (A/C compressor magnet clutch, ON, OFF)
This parameter indicates the state of the A/C compressor magnet clutch.