Description of Frozen Values, CEM

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.

Total mileage, value
Measurement range: 0 - 1,000,000 km.
The value indicates the vehicle's total mileage when the Diagnostic Trouble Code (DTC) was generated.

MECU power supply, value
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, value
Measurement range: -40 till +215° C.
The value indicates the passenger compartment temperature when the diagnostic trouble code was generated.

Outside temperature, value
Measurement range: -40 till +215° C.
The value indicates the outside temperature when the diagnostic trouble code was generated.

Power supply position, status (structure week -201045)
The value indicates the status of the power supply mode when the diagnostic trouble code was generated.
- Key removed
- Key recently removed
- Key approved
- Ignition off after Accessory position
- Accessory position
- Accessory position after Ignition on
- Ignition on
- Running
- Start attempt

Power supply position, status (structure week 201046-)
The value indicates the status of the power supply mode when the diagnostic trouble code was generated.
- Key removed
- Key recently removed
- Key approved
- Ignition off after Accessory position
- Accessory position
- Accessory position after Ignition on
- Ignition on
- Combustion engine running
- Combustion engine in auto-stop
- Combustion engine in start attempt
- Combustion engine in start attempt at manual start