Specifications

98
Data Parameters Climate Control Parameters
input, and the Y Factor. The coolant valves are located next to the brake booster inside the
engine compartment.
DEFOG FLAP MOTOR (DEFROSTER FLAP)(%)
Range: ____________________________________________________ see description
This parameter indicates the IHKA command position for the defroster air flaps. At 0%, the
defroster air flaps should be fully closed, and at 100%, fully open. These flaps are controlled
through a stepper motor which can adjust flaps in very fine increments.
EVAPORATER (EVAPORATOR TEMPERATURE)(°C/°F)
Range: ______________________________________________________ not available
This parameter indicates evaporator temperature. This parameter is based on the signal of a
negative temperature coefficient (NTC) type sensor located inside the evaporator. The climate
control module uses this input to keep the evaporator at approximately at 35°F (2°C). The
climate control keeps this temperature by cycling the A/C compressor on and off as needed.
Sensor working range is 14 to 86°F (-10 to 30°C). The substituted default value most often used
is 32°F (0°C).
This substituted value is below the cycling point of the A/C compressor, which is designed to shut
down the A/C if the evaporator temperature sensor fails.
EXTRA COOLANT PUMP (ADDITIONAL COOLANT PUMP)
Range: __________________________________________________________ ON/OFF
This parameter indicates whether the auxiliary electric water pump is commanded on or off. The
system commands the pump on at low temperatures to ensure that enough hot coolant is
available at the heater core to more quickly heat up the interior. It also stays on for a short period
if the engine is shut off to maintain circulation and prevent the interior temperature from dropping
during short stops.
HEAT EXCHANGE LEFT (HEAT EXCHANGER TEMPERATURE LEFT)(°C/°F)
HEAT EXCHANGE RIGHT (HEAT EXCHANGER TEMPERATURE RIGHT)(°C/°F)
Range: ______________________________________________________ not available
These parameters indicate the temperature of the left and right heater cores based on the
signals of two sensors, both located behind the left and right heater core where they are exposed
to the air that has just passed through the core. These are negative temperature coefficient
(NTC) type sensors—as temperature increases, resistance decreases, and as temperature
decreases, resistance increases. Working range of the sensors are 41–255°F (5–124°C). The
substituted default value most often used is 131°F (55°C).
INSIDE TEMPERATURE(°C/°F)
Range: ______________________________________________________ not available
This parameter indicates interior cabin temperature based on the signal of a negative
temperature coefficient (NTC) type sensor and is located behind the protective grill of the climate
control faceplate. The interior temperature sensor is the most important input for the climate
control module to calculate the Y Factor. Working range of the sensor is 50–104°F (10–40°C).
The substituted default value most often used is 20°F (68°C).
LEG ROOM FLAP MOTOR (FOOTWELL FLAP MOTOR)(%)
Range: ______________________________________________________ not available
This parameter indicates the IHKA command position for the leg or footwell air flaps. At 0%, the
flaps should be fully closed and at 100%, fully open. These flaps are controlled through a stepper
motor which can adjust flaps in very fine increments.