Bus message, main instrument unit
| Bus message, main instrument unit |
For a further description of the car's bus system, see System overview, bus and diagnostics communication, petrol and System overview, bus and diagnostics communication, diesel .
| The MIU uses the following information: |
| Information | Value/Units | From | The value is dependent on the following sensor input, signal or function |
|
LH direction indicators repeater
|
ON/OFF
|
DICE
|
Control module activates the output to the lamps. MIU lights the indicator lamp for the left hand direction indicators.
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|
RH direction indicators repeater
|
ON/OFF
|
DICE
|
Control module activates the output to the lamps. MIU lights the indicator lamp for the right hand direction indicators.
|
|
Rear fog light
|
ON/OFF
|
DICE
|
Control module activates the output to the lamps. MIU lights the indicator lamp for the rear fog light.
|
|
Driver's door
|
OPEN/CLOSED
|
TWICE
|
Door contact. MIU lights the symbol for the driver's door.
|
|
Passenger's door
|
OPEN/CLOSED
|
TWICE
|
Door contact. MIU lights the symbol for the passenger door.
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|
LH Rear Door
|
OPEN/CLOSED
|
TWICE
|
Door contact. MIU lights the symbol for the left rear door.
|
|
RH Rear Door
|
OPEN/CLOSED
|
TWICE
|
Door contact. MIU lights the symbol for the right rear door.
|
|
Boot lid
|
OPEN/CLOSED
|
TWICE
|
Door contact. MIU lights the symbol for the tailgate.
|
|
Steering wheel location
|
LHD/RHD
|
TWICE
|
Control module programming. MIU lights the symbol for the driver's door/passenger door.
|
|
Rheostat level
|
0-100 %
|
SID control module
|
Rheostat control module input. Rheostat level.
|
|
Rheostat Night Panel
|
0-100 %
|
SID control module
|
Rheostat control module input reduced internally by a fixed value
|
|
Night panel
|
ON/OFF
|
SID control module
|
Button. MIU extinguishes the instrument and display lighting.
|
|
Display lighting
|
0-100 %
|
SID control module
|
The rheostat control module input or light sensor, highest value. MIU uses the information to control the display lighting.
|
|
Cabin light intensity
|
0-1200 Lux
|
SID control module
|
Light sensor. Used by MIU to control the light intensity of indicator lamps.
|
|
Check engine lamp
|
ON/OFF
|
ECM
|
Internal diagnostics. MIU lights the CHECK ENGINE lamp.
|
|
Shift Up lamp
|
ON/OFF
|
ECM
|
Front right wheel speed. MIU turns on Shift Up lamp.
|
|
CRUISE lamp
|
ON/OFF
|
ECM
|
Cruise control function. MIU lights the CRUISE lamp.
|
|
Fuel consumed since start
|
0-65535 ml
|
ECM
|
Fuel injection function. Used by the SID control module for the trip computer function, can be adjusted with offset in MIU.
|
|
Engine speed
|
0-7000 rpm
|
ECM
|
Crankshaft position censor. MIU controls the tachometer.
|
|
Coolant temperature
|
-40-215°C
|
ECM
|
Coolant temperature sensor. MIU controls the coolant temperature gauge.
|
|
Turbo boost gauge
|
0-255, no units
|
ECM (petrol engine)
|
Current air mass per combustion.
|
|
Selector lever position
|
Cars with Sentronic:
P, R, N, D, M, L
Cars without Sentronic: P, R, N, D, 4, 3, L |
TCM
|
Gear selector lever sensor. The MIU shows the current selector lever position on the information display.
|
|
Selected gear
|
1 - 5
|
TCM
|
The TCM sends the message "Selected gear". This is used by MIU in order to show the current gear whilst in mode M. The current gear is shown on the information display.
|
|
CHECK GEARBOX Lamp
|
ON/OFF
|
TCM
|
Internal diagnostics. MIU lights the CHECK GEARBOX lamp.
|
|
SPORT Lamp
|
ON/OFF
|
TCM
|
The button and the oil temperature sensor and not limp home or WINTER. The MIU indicates SPORT on the information display.
|
|
Wheel speed RL
|
0-300 km/h
|
ESP
|
Wheel speed sensor LR.
|
|
Wheel speed RR
|
0-300 km/h
|
ESP
|
Wheel speed sensor RR.
|
|
ABS lamp
|
ON/OFF
|
ESP
|
Internal diagnostics.
|
|
ESP OFF lamp
|
ON/OFF
|
ESP
|
Switch, internal diagnostics.
|
|
ESP indication
|
ON/OFF
|
ESP
|
ESP control
|
|
TPMS lamp
|
ON/OFF
|
TPMS
|
Tyre pressure too low or TPMS not functioning. (Certain markets)
|
|
Airbag lamp
|
ON/OFF
|
SRS
|
Internal diagnostics.
|
|
Glow plug indicator lamp
|
ON/OFF
|
ECM (diesel)
|
Glow plug function. Glow plug indicator lamp comes on when the glow plugs are active.
|
|
Diagnostics communication
|
DICE/diagnostic tool
|
The control module must be powered and the bus leads intact. DICE/diagnostic tool.
|
| The MIU sends the following information: |
| Information | Value/Units | Used by | The value is dependent on the following sensor input, signal or function |
|
Vehicle speed
|
km/h (mph)
|
ECM, DICE, SID control module, ACC, Audio, TWICE, SPA, TPMS
|
Rear left wheel speed. The main instrument unit calculates the current vehicle speed based on wheel speed information from the ESP control module and the tyre programming.
|
|
Acoustic warning
|
Acoustical information
|
SID control module
|
Control module activation of central warning lamp or info display lamp
|
|
Fuel level
|
litres
|
SI, ECM
|
Fuel tank sensor, control module adjustment. MIU sends information on the current fuel level in the tank.
|
|
Odometer reading
|
km (miles)
|
SID control module
|
Display value. Information on the distance travelled.
|
|
Fuel consumed since start
|
0-65535 ml
|
ECM
|
Bus from engine control module. The value is corrected by an adjustment factor in MIU. The factor can be adjusted by the diagnostic tool.
|
|
STOP FOR FUEL
|
ON/OFF
|
SID control module
|
TILL is transmitted when the fuel level is less than 3 litres. The MIU sends the bus message to the SID control module. The SID control module sends a text message to the MIU. The text message is shown on the MIU information display. (Only cars with diesel engine.)
|
|
Light sensor value
|
0-255
|
SID control module
|
Light sensor. The SID control module uses the value and calculates the display lighting, rheostat value and cabin lighting intensity. A message with these values is transmitted on the bus.
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|
Identification number
|
|
TWICE
|
Value created in MIU when immobilisation code is programmed in TWICE
|
|
Diagnostics communication
|
DICE/diagnostic tool
|
The control module must be powered and the bus leads intact. DICE/diagnostic tool.
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