Description of Frozen Values, PHM

Description of frozen values

Explanation

Frozen values are parameter values that are stored when a diagnostic trouble code (DTC) is stored.
Not all parameters can be read out for all diagnostic trouble codes. The parameter values can only be read if they can provide additional information on the prevailing conditions when the code was generated.

Parameters, value

Global time
The value shows the actual time in minutes when the diagnostic trouble code was stored. The phone module (PHM) obtains the value from the central electronic module (CEM) via the controller area network (CAN).

Total mileage (km/miles)
The value indicates the total distance the vehicle had travelled when the diagnostic trouble code was generated. The phone module (PHM) receives the value from the central electronic module (CEM) via the CAN network.

MECU power supply
Measurement range 0 - 63 V.
Normal range: 12.0 - 14.5 V.
The value indicates the power supply to the central electronic module (CEM) when the diagnostic trouble code was generated.

Passenger compartment temperature
Measurement range: -40 to +215 °C.
The value indicates the passenger compartment temperature when the diagnostic trouble code was generated.

Power supply mode
The value indicates the current status of the power supply position when the diagnostic trouble code (DTC) was stored.
Key removed
Key recently removed
Key approved
Ignition off after Accessory position
Accessory position
Accessory position after Ignition on
Ignition on
Running
Start attempt