Frozen Values Climate Control Module, Description

Frozen values climate control module, description

Explanation
Not all the parameters described need to be implemented in the control module. This varies from system to system.
Parameters can also vary depending on which type of climate control module the car is equipped with.
Frozen values are parameter values that are stored when a diagnostic trouble code (DTC) is stored.

Battery voltage, value
Measurement range: 0-18 V
Normal value when the generator (GEN) is charging: 13.0-14.5 V
The value indicates the voltage at the climate control module. Delayed X supply means that voltage supply is retained for 1 minute after the ignition is switched off. Activation of functions such as blower fan run-on and damper motor self-adjustment must be possible during this time.

Distance, value
Indicates the total mileage of the vehicle. The value is given in km.

Time, value
The value displays the time that has passed since the diagnostic trouble code (DTC) was stored.

Fan current, value
Measurement range: 0-10 mA
The climate control module calculates the value based on the signal from the control knob for the blower fan. With electronic climate control, the value is also affected by automatic climate control (AUTO position).
The value is used to control the power supply from the power unit to the blower fan motor.

Fan switch, value
Measurement range: 0-100 %
The value indicates the control signal from the climate control module to the blower fan motor.

Blower fan diagnostic signal, value
Measurement range: 0-5 V
The climate control module generates an analog signal. This is converted to a current which the power unit converts back to an analog signal. The diagnostic signal is an extremely intense signal that cannot be used when checking the blower fan.

Passenger compartment temperature, value
Measurement range: -40 to +85 °C
The climate control module calculates the temperature based on the signal from the passenger compartment temperature sensor.
The value is used to control the passenger compartment temperature and as the input signal to the central electronic module (CEM).

Fan level, value
Measurement range: 0-7 step
The value indicates the position of the blower fan switch and is used by the climate control module to calculate the control signal to the blower fan motor.

Voltage fan, value
Measurement range: 1-5 V
The value indicates the position of the blower fan switch and is used by the climate control module to calculate the control signal to the blower fan motor.

Left temperature damper motor, status
The status displays if the damper motor is activated or not.
Off = not activated
On = activated

Right temperature damper motor, status
The status displays if the damper motor is activated or not.
Off = not activated
On = activated

Recirculation damper motor, status
The status displays if the damper motor is activated or not.
Off = not activated
On = activated

Damper motor floor / ventilation status
The status displays if the damper motor is activated or not.
Off = not activated
On = activated

Damper motor, defroster, status
The status displays if the damper motor is activated or not.
Off = not activated
On = activated

Engine running, status
The status displays if the engine was running when the diagnostic trouble code (DTC) was stored.
No = engine not running
Yes = engine running

Pulses from the temperature sensor for the fan motor, value
Measurement range: 0-15 pulses/65 ms
The value indicates the speed of the fan for the passenger compartment temperature sensor. The standard number of pulses is 12-13/65 ms.

Temperature, value
Measurement range: -60 to +195 °C
The value indicates the engine coolant temperature (ECT). The climate control module uses the value to control the blower fan during cold start when AUTO is selected.

Outside temperature, value
Measurement range: -40 to +80 °C
The climate control module obtains the value via the control area network (CAN) from the passenger door module (left-hand drive) or the driver's door module (right-hand drive).
The value is used to control the passenger compartment temperature.

Evaporator temperature sensor, value
Measurement range: 0-5 V
The climate control module uses the value from the evaporator temperature sensor to calculate the temperature.
The value is used to control the air conditioning (A/C) compressor. The compressor is switched off when there is a risk of freezing.

Air conditioning (A/C), status, compressor status
The status displays if the compressor was running when the diagnostic trouble code (DTC) was stored.
Off = compressor off
On = compressor on

Linear pressure, value
Measurement range 0-3100 kPa
The value indicates the pressure in the compressor.

Voltage, passenger compartment temperature sensor, value
Measurement range: 0-5 V
The climate control module uses the value from the passenger compartment temperature sensor to calculate the passenger compartment temperature. The value is used as a compensation parameter to control the passenger compartment temperature.

Sun sensor, sensor signal, value
Measurement range: 0-5 V
The climate control module uses the value from the sun sensor to calculate the sun intensity. The value is used as a compensation parameter to control the passenger compartment temperature.

Twilight sensor, sensor signal, value
Measurement range: 0-5 V
The climate control module uses the value from the twilight sensor to calculate the degree of darkness. The value is used to control the strength of the lighting of the button LEDs.

Temperature damper motor, left position, value
Measurement range: 0-100 %
The value indicates how much the damper is open.
The climate control module calculates the value based on the stage movement of the damper motor.

Damper motor, temperature right position, value
Measurement range: 0-100 %
The value indicates how much the damper is open.
The climate control module calculates the value based on the stage movement of the damper motor.

Recirculation damper motor position, value
Measurement range: 0-100 %
The value indicates how much the damper is open.
The climate control module calculates the value based on the stage movement of the damper motor.

Floor / ventilation damper motor position, value
Measurement range: 0-100 %
The value indicates how much the damper is open.
The climate control module calculates the value based on the stage movement of the damper motor.

Damper motor defroster position, value
Measurement range: 0-100%
The value indicates how much the damper is open.
The climate control module calculates the value based on the stage movement of the damper motor.

Automatic breaker, activated, status
The status displays if the signal from the air distribution selector to the climate control module was activated when the diagnostic trouble code (DTC) was stored.
Yes = activated
No = not activated

Floor, activated, status
The status displays if the signal from the air distribution selector to the climate control module was activated when the diagnostic trouble code (DTC) was stored.
Yes = activated
No = not activated

Defroster, activated, status
The status displays if the signal from the air distribution selector to the climate control module was activated when the diagnostic trouble code (DTC) was stored.
Yes = activated
No = not activated

Max defroster, activated, status
The status displays if the signal from the air distribution selector to the climate control module was activated when the diagnostic trouble code (DTC) was stored.
Yes = activated
No = not activated

Air conditioning (A/C) on, activated, status
The status displays if the signal from the air distribution selector to the climate control module was activated when the diagnostic trouble code (DTC) was stored.
Yes = activated
No = not activated

Air conditioning (A/C) off, activated, status
The status displays if the signal from the air distribution selector to the climate control module was activated when the diagnostic trouble code (DTC) was stored.
Yes = activated
No = not activated

Recirculation activated, status
The status displays if the signal from the air distribution selector to the climate control module was activated when the diagnostic trouble code (DTC) was stored.
Yes = activated
No = not activated

Ventilation, activated, status
The status displays if the signal from the air distribution selector to the climate control module was activated when the diagnostic trouble code (DTC) was stored.
Yes = activated
No = not activated

Seat heater left front activated, status
The status displays if the signal from the seat heater to the climate control module was activated when the diagnostic trouble code (DTC) was stored.
Yes = activated
No = not activated

Seat heater right front activated, status
The status displays if the signal from the seat heater to the climate control module was activated when the diagnostic trouble code (DTC) was stored.
Yes = activated
No = not activated

Defroster / heated rear windshield, activated, status
The status displays if the signal from the defroster / heated rear windshield to the climate control module was activated when the diagnostic trouble code (DTC) was stored.
Yes = activated
No = not activated

Sensor signal, air quality sensor (AQS), status
The climate control module interprets the pulse width of the air quality sensor and presents it as different levels.
Off
Level 1
Level 2
Level 3

Air quality sensor pulse width, value
Measurement range 0-100 %
The climate control unit calculates the air quality using the signal from the air quality sensor. The value is used to control the position of the recirculation motor.

General information about reading off the status of the buttons on the dashboard environment panel
The result from reading off the status for buttons on the dashboard environment panel in order from left to right.

Dashboard environment panel, button identity, status
The status indicates the function of the button.
The following alternatives are available:
- Empty position
Adjustable head restraints
Folding door mirrors
Private locking
STC
DSTC
Auxiliary lamps
Reduced alarm
Bi-fuel
Child-proof lock.

Dashboard environment panel, button activated, status
The status displays if the button was activated when the diagnostic trouble code (DTC) was stored.
Yes = activated
No = not activated

Dashboard environment panel, button status
The status displays if the function for the button corresponds to the configuration for the central electronic module (CEM).
Unknown = the status could not be determined
Not permitted = the button function does not correspond to the configuration of the central electronic module
Permitted = the button function corresponds to the configuration of the central electronic module

Carconfigstatus, adjustable head restraint, status
The status displays whether the identity of a certain switch is permissible or missing compared with the permitted switch identities in the Car Configuration File.
Not defined = comparison failed
Not permitted = identity not permitted
OK = identity permitted
Button missing = button missing on the dashboard environment panel in comparison to the information in the Car Config File

Carconfigstatus, folding door mirrors, status
The status displays whether the identity of a certain switch is permissible or missing compared with the permitted switch identities in the Car Configuration File.
Not defined = comparison failed
Not permitted = identity not permitted
OK = identity permitted
Button missing = button missing on the dashboard environment panel in comparison to the information in the Car Config File

Carconfigstatus, bifuel, status
The status displays whether the identity of a certain switch is permissible or missing compared with the permitted switch identities in the Car Configuration File.
Not defined = comparison failed
Not permitted = identity not permitted
OK = identity permitted
Button missing = button missing on the dashboard environment panel in comparison to the information in the Car Config File

Carconfigstatus, private locking, status
The status displays whether the identity of a certain switch is permissible or missing compared with the permitted switch identities in the Car Configuration File.
Not defined = comparison failed
Not permitted = identity not permitted
OK = identity permitted
Button missing = button missing on the dashboard environment panel in comparison to the information in the Car Config File

Carconfigstatus, STC (stability and traction control), status
The status displays whether the identity of a certain switch is permissible or missing compared with the permitted switch identities in the Car Configuration File.
Not defined = comparison failed
Not permitted = identity not permitted
OK = identity permitted
Button missing = button missing on the dashboard environment panel in comparison to the information in the Car Config File

Carconfigstatus, DSTC (dynamic stability and traction control), status
The status displays whether the identity of a certain switch is permissible or missing compared with the permitted switch identities in the Car Configuration File.
Not defined = comparison failed
Not permitted = identity not permitted
OK = identity permitted
Button missing = button missing on the dashboard environment panel in comparison to the information in the Car Config File

Carconfigstatus, auxiliary lamps, status
The status displays whether the identity of a certain switch is permissible or missing compared with the permitted switch identities in the Car Configuration File.
Not defined = comparison failed
Not permitted = identity not permitted
OK = identity permitted
Button missing = button missing on the dashboard environment panel in comparison to the information in the Car Config File

Carconfigstatus, reduced alarm, status
The status displays whether the identity of a certain switch is permissible or missing compared with the permitted switch identities in the Car Configuration File.
Not defined = comparison failed
Not permitted = identity not permitted
OK = identity permitted
Button missing = button missing on the dashboard environment panel in comparison to the information in the Car Config File

Carconfigstatus, child-proof lock, status
The status displays whether the identity of a certain switch is permissible or missing compared with the permitted switch identities in the Car Configuration File.
Not defined = comparison failed
Not permitted = identity not permitted
OK = identity permitted
Button missing = button missing on the dashboard environment panel in comparison to the information in the Car Config File