9000 CDE V6-2962cc 3.0L DOHC (B308) (1995)
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Trip Computer: Description and Operation
EDU 3 Trip Computer and Clock
EDU 3 Trip Computer And Clock: Cars With A Manual Gearbox
EDU 3 Trip Computer And Clock: Cars With Automatic Transmission
General
The EDU 3 trip computer (Electronic Display Unit) is available in two basic versions, one for a manual gearbox and one for automatic transmission. The
computer is programmable, which means that a replacement trip computer must be programmed for the car model, etc. in which it is fitted.
Programming is performed with the ISAT scan tool. In addition, the ISAT scan tool can be used to carry out certain adjustments and tests and to obtain
readouts of diagnostic trouble codes.
The trip computer provides the following information:
In The Left-hand Part Of The Display
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Current and average fuel consumption.
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Range on remaining fuel.
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Battery voltage.
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Outside temperature.
In The Right-hand Part Of The Display
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Selector lever position (on cars with automatic transmission).
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Current fuel consumption (horizontal scale).
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Warning message CHECK ENGINE (malfunction indicator lamp) in the event of a malfunction in the Trionic or Motronic engine management
systems or in the ETS electronically controlled throttle.
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Warning message CHECK RADIATOR LEVEL if the coolant level is too low.
When the ignition is switched on, all check indicator lamps should light up and then go out one by one within 4 seconds.
Use the R and INFO buttons to select the different functions of the trip computer and the display in km or miles, for instance. The buttons are
situated on clock 49 or SCC trip computer 241.
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Trip computer 210 is supplied with current continuously via fuse 17 and also via fuse 13 when the ignition switch is in the Drive position.
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The brightness of the display is automatically adjusted in daylight by means of a sensor on either the SCC unit or the clock. When driving in the dark,
display brightness can be adjusted with rheostat 16 (lighting for controls).
Fuel Consumption
In order to calculate and present current and average fuel consumption, the trip computer requires data on:
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the distance driven from vehicle speed sensor 132 via pin 9.
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current fuel consumption from the engine control module via pin 8. The control module uses the control pulses to the injectors, the frequency of
