Description Of Frozen Values, FSM

Description of frozen values

Explanation
Frozen values are parameter values that are stored when a diagnostic trouble code is generated. 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.

Global time
The value indicates the time since the central electronic module (CEM) was powered the first time. The FSM obtains the value via the control area network (CAN) from the central electronic module (CEM). The value is given in seconds.

Vehicle speed
The value indicates the vehicle speed when the diagnostic trouble code (DTC) was stored.

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 to +215 °C.
The value indicates the passenger compartment temperature when the diagnostic trouble code was generated.

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

Power supply mode, status
Status shows the vehicle's power supply mode. Central electronic module (CEM) collects information from relevant modules and sensors and creates the parameter. The information is stored in Central electronic module (CEM) and is distributed to other modules via the communication network that connects Central electronic module (CEM) and the relevant module, e.g. CAN.
The following status modes are available:
- 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