Description of Frozen Values, HCM

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.

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.

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

Power supply mode, status
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
- Signal missing

Power supply, value
Measurement range 6 - 20 V.
Indicates the power supply to the headlamp control module (HCM).
Normal value when the generator (GEN) is charging: 13.0 - 14.5 V.

Speed, value
Measurement range: 0 to 255 km/h (158 mph).
Indicates speed when the diagnostic trouble code was generated.

Steering wheel angle, value
Measurement range: -780 to +780°.
Indicates current steering wheel angle.
The normal value when the steering wheel and front wheels point straight ahead is approx. 0°.