Control Module Function

Control Module Function

Events

NOTE: The occurrence of particular system errors is stored in the event memory. Furthermore, it is possible to read out the time of the occurrence by means of the [F8] key. The time is shown in minutes. The events stored in the event memory concern components of the instrument cluster and also components of other control modules like PSM or DME. The following system errors are stored in the event memory:

NOTE: During diagnosis, ABS failure and PSM failure events are entered into the event memory via communication with the PST2 and the respective warning lights are activated during the automatic control module search. In this case, no fault is present and the event memory is to be erased after completion of the diagnosis.




Tester display, possible causes, remedy


Coding

The following coding options are available under the menu item "Coding":







Menu item, function


Total Mileage

It is possible to code the total mileage under this menu item after replacing the instrument cluster.

1. Connect PST 2 and switch on ignition.
2. Select vehicle type 911 (996) and the instrument cluster control module and press the key [>>]
3. Select the menu item "Transponder key" and press the key [>>].
4. You are requested to enter the "Vehicle Ident. No."
5. Enter Vehicle Ident. No. or accept with the key [>>], check the entry and press key [F7].
6. Observe the instructions of the diagnosis tester, enter the total mileage with the tabulator key, check and then press the [F8] key to code the entered total mileage.

The total mileage can also be read out from the old instrument cluster under the menu item "Control module replacement" and can be transferred into the new instrument cluster if the old replacement instrument is still functional and if it is possible to establish communication with the PST 2.

Tank calibration

See Fuel Level Sensor - Service and Repair - Calibrating Fuel Level Sensor System.

Speedometer A

A speed can be simulated under this menu item to check the function of dynamic volume control (speed-dependent volume). If the function of the dynamic volume is switched on and the speed is simulated by means of PST 2, the volume must change according to the speed. The higher the simulated speed, the higher the volume.


Control Module Replacement

Certain values can be read out of the old instrument cluster and can be transferred into the new instrument cluster. A prerequisite for this is that the communication can be set up between the old instrument cluster and PST 2. The following values can be read out of the old instrument cluster and can be transmitted into the new instrument cluster:
- Total mileage
- Tank calibration
- Vehicle Ident. No.

NOTE:
- The country coding is not read out and transferred via this function.
- Correct country coding is a prerequisite of the correct functioning of the instrument cluster.