GF54.30-P-3041G Display Operating Conditions, Function
GF54.30-P-3041G Display Operating Conditions, Function
MODEL 463.306 /336 /346 up to 31.5.12 as of Model Year 2011 /YoM 10
MODEL 463.202 /222 /236 /237 up to 31.5.12 as of Model Year 2009 /YoM 08
MODEL 463.247 /248 /249 /254 up to 31.8.08 as of Model Year 2007
Model year 07.5, modification year 07
MODEL 463.270 /271 /303 /340 /341 up to 31.5.12 as of Model Year 2007
Model year 07.5, modification year 07
1 Engine speed
2 Coolant temperature
3 Fuel quantity
4 Wheel speeds
5 Engine oil level
6 Status of transfer case control
7 Transmission mode
8 Current gear stage
A1 Instrument cluster
B11/4 Coolant temperature sensor
B70 Crankshaft Hall sensor (with engine 273, 642)
L5 Crankshaft position sensor (with engine 113)
L6/1 Left front rpm sensor
L6/2 Right front rpm sensor
L6/3 Left rear rpm sensor
L6/4 right rear rpm sensor
N3/9 CDI control unit (with diesel engine)
N3/10 ME-SFI [ME] control unit (with gasoline engine)
N10/2 Rear signal acquisition and actuation module (SAM)
N15/3 EGS control unit (with transmission 722.6)
N15/5 Electronic selector lever module control unit
N15/7 VGS control unit
N30/4 ESP control unit
Y3/8n4 Fully integrated transmission control unit (VGS) (with transmission 722.9)
CAN B Interior CAN
CAN C Drive train CAN
Function requirements, general
^ Instrument cluster activated
Function sequence for displaying operating conditions in general
The operating conditions display provides the driver with permanent information about the current operating conditions of the vehicle. The Display operating conditions function is comprised of the following partial functions:
^ Speed display function sequence
^ Display of engine speed function sequence
^ Display of coolant temperature function sequence
^ Display of fuel quantity function sequence
^ Display of travel distance function sequence
^ Function sequence of gear indicator
^ Function sequence of transmission mode display
^ Engine oil level indicator function sequence
The circuit status is provided by the EZS control unit (N73) on the interior CAN and on the drive train CAN.
Additional function requirements for function sequence of speed display
^ Circuit 15 ON
Speed display function sequence
The wheel speeds determined by the rpm sensors are read in by the ESP control unit and transmitted via the drive train CAN. The instrument cluster calculates the current speed from the values received. This is adjusted with a stored speedometer characteristic and displayed via a stepper motor in the electronic speedometer (A1p8).
The instrument cluster makes available the vehicle speed value determined for other vehicle systems both on the interior CAN and on the drive train CAN.
Additional function requirements for display of engine speed
^ Circuit 61 ON
Display of engine speed function sequence
The crankshaft speed recorded by the crankshaft position sensor is read in by the ME-SFI [ME] control unit or by the CDI control unit and transmitted on the drive train CAN.
The instrument cluster receives this data and actuates the tachometer accordingly via a stepper motor (A1p5).
Additional function requirements for function sequence of coolant temperature display
^ Circuit 15 ON
Display of coolant temperature function sequence
The coolant temperature recorded by the coolant temperature sensor is read in by the ME-SFI control unit or by the CDI control unit and forwarded to the drive train CAN.
The instrument cluster actuates the stepper motor of the coolant temperature display (A1p1) accordingly.
Display ranges
^ T = 40 °C to 95 °C:
The actual temperature is displayed.
^ T = 95 °C to 115 °C:
The pointer is actuated constantly to a value of T = 90 °C.
^ T = 120 °C to 135 °C:
The actual temperature is displayed.
At coolant temperatures of T > 130 °C a warning message is output in the multifunction display (A1p13).
The actual values are displayed in the event of an additional fan (M4) being recognized as defective.
If the instrument cluster does not receive any coolant temperature, then the coolant temperature gauge is not actuated.
Additional function requirements for function sequence of fuel quantity display
^ Circuit 15 ON
Display of fuel quantity function sequence
The fill level measured via the fuel level sensor (B4) is read in by the rear SAM and transmitted to the instrument cluster via the interior CAN.
The values received are evaluated with the aid of a tank characteristic and displayed in the fuel level indicator in instrument cluster (A1p2) via a stepper motor
The fuel reserve warning lamp (A1e4) lights up if the reserve range is reached.
Additional function requirements for function sequence of travel distance display
^ Circuit 15 ON
Display of travel distance function sequence
The function of the display of travel distance is comprised of several subfunctions:
^ Calculation of travel distance
^ Display of main odometer reading
^ Display of trip distance
^ Saving mileage counts
Calculation of travel distance
The wheel speeds determined by the rpm sensors are read in by the ESP control unit and forwarded to the drive train CAN. The instrument cluster calculates the distance covered from the values received in combination with the tire size.
Display of main odometer reading
The display appears in the multifunction display.
The maximum displayed counter reading of the main odometer reading is 999999.
Display of trip distance
The display appears in the basic display of the "Trip" menu in the multifunction display.
The maximum displayed counter reading of the trip distance is 9999.9. If this value is achieved, the figure returns to zero.
Saving mileage counts
The main odometer reading is continually stored in the nonvolatile part of the internal memory. This memory also guarantees the retention of the counter reading for at least five years also when the power supply is decoupled.
The current reading of the trip odometer is likewise stored in the nonvolatile memory of the instrument cluster.
However the current counter reading is first transferred from the volatile memory to the nonvolatile memory after a circuit change from circuit 15 ON to circuit 15 OFF.
Additional function requirements for function sequence of gear indicator
^ Circuit 15 ON
Gear indicator function sequence
The current gear is displayed in the gear indicator (A1p12).
The required data are transmitted from the electronic selector lever module control unit to the instrument cluster via the drive train CAN.
Additional function requirements for function sequence of transmission mode display
^ Circuit 15 ON
Function sequence of transmission mode display
The current transmission mode is shown in the transmission mode display (A1p16).
The required data are transmitted by the VGS [fully integrated transmission control] control unit to the instrument cluster via the drive train CAN.
Function requirements for function sequence of engine oil level indicator
^ Circuit 15 ON
Engine oil level indicator function sequence
The engine oil level is read in by the ME-SFI control unit or by the CDI control unit.
If necessary the ME-SFI [ME] control unit or CDI control unit sends a message to the instrument cluster via the drive train CAN.
As a consequence the instrument cluster fades in the corresponding message in the multifunction display.
