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.
|
|
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.
|
|
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.
|
|
Info Disp Lamp
|
ON/OFF
|
SID
|
For text message. MIU lights the indicator lamp Info Display.
|
|
Rheostat level
|
0-100 %
|
SID
|
Rheostat control module input. Rheostat level.
|
|
Rheostat Night Panel
|
0-100 %
|
SID
|
Rheostat control module input reduced internally by a fixed value
|
|
Night panel
|
ON/OFF
|
SID
|
Button. MIU extinguishes the instrument and display lighting.
|
|
Display lighting
|
0-100 %
|
SID
|
The rheostat control module input or light sensor, highest value. MIU uses the information to control the display lighting.
|
|
Cabin light intensity
|
Lux
|
SID
|
Light sensor. MIU uses the value to control the intensity of the 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 SID for 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
|
Selector sensor. MIU lights the current indicator lamp.
|
|
Selected gear
|
1 - 5
|
TCM
|
The TCM sends out a "Selected gear" message which is used by the MIU for display of the current gear in position M.
|
|
CHECK GEARBOX Lamp
|
ON/OFF
|
TCM
|
Internal diagnostics. MIU lights the CHECK GEARBOX lamp.
|
|
SPORT Lamp
|
ON/OFF
|
TCM
|
Button, oil temperature sensor and no limp-home or WINTER. MIU lights the SPORT lamp.
|
|
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 lamp
|
ON/OFF
|
ESP
|
ESP control
|
|
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, ACC, Audio, TWICE, SPA
|
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 activation of central warning lamp or info display lamp
|
|
Fuel level
|
litres
|
SID, ECM
|
Fuel tank sensor, control module adjustment. MIU sends information on the current fuel level in the tank.
|
|
Odometer reading
|
km (miles)
|
SID
|
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
|
When the fuel level is below 3 litres, this signal is sent. MIU sends the text message to SID and the message is shown on the SID display (diesel cars only).
|
|
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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