Displaying distance, function - GF54.30-P-3022S

Model 215, 220

Networking

Fig 1: Networking Of Components For Displaying Distance

Calculating the distance:

The distance is calculated in the instrument cluster (A1) using the vehicle speed (integration according to time).

The computer in the instrument cluster (A1) calculates the distance and the vehicle speed using the wheel speeds measured by the four wheel speed sensors. The instrument cluster (A1) receives the wheel speeds in "rpm" from the traction system control unit (N47) on the engine compartment CAN.
The system also includes tire size in its calculations of distance and speed. The tire size code is entered using the STAR diagnosis tool.

Refer to the document entitled "Displaying Speed, Function" for evaluation of the wheel speed signals.

Displaying the total mileage:

The total mileage is displayed as a 6-figure number on the main screen of the multifunction display (A1p13) in kilometers or miles as soon as the instrument cluster (A1) is activated.
The range for the total mileage odometer is from 0 to 999999 kilometers or miles.
If the maximum mileage is reached, the counter is not reset to 0. It is then necessary to replace the instrument cluster (A1).

Displaying the trip mileage:

The trip mileage is displayed as a 5-figure number on the main screen of the multifunction display (A1p13) in kilometers or miles as soon as the instrument cluster (A1) is activated.
The range for the trip mileage odometer is from 0 to 9999.9 kilometers or miles. The display is reset to 0 once the maximum mileage is reached.
Resetting the trip odometer:
The trip odometer is reset to 0 by pressing the trip odometer reset button (right-hand button on the instrument cluster (A1)). Prerequisites:
- The instrument cluster (A1) is activated and
- the multifunction display (A1p13) is displayed in the main screen (total and trip mileage).

Switching between kilometers and miles:

The mileage display can be switched over from kilometers to miles by means of the Settings function.

If implausible wheel speed signal values are received on the CAN, the total and trip mileage odometer "freezes" and an error bit is stored in the memory.

The current reading on the total mileage odometer is also relayed onto the interior compartment CAN by the instrument cluster (A1).

Storage of data:

If the battery is removed, the total mileage is stored for at least 5 years.

The trip mileage is also protected against data loss if the battery is removed for a short period of time.

	Activating instrument cluster, function		GF54.30-P-2006S
	Displaying speed, function		GF54.30-P-3025S
	Instrument cluster (IC), operating information		GF54.30-P-0002-05S
	Liquid crystal display (LCD), location/task/ function		GF54.30-P-3015A