Control Module Function

Control Module Function

Replacing Control Module

CAUTION: Moisture can cause corrosion to form. Liquid must not come into contact with the connector.

Bear the following points in mind:
- The control module must be coded for the corresponding country and for the brake system.
- The vehicle identification number must be entered.

Coding

NOTE: Menu item 'Coding' can be called only if the automatic control module search was performed at the beginning of diagnosis setup.

Extract coding
The coding can be both checked and changed with this menu item.

Procedure:
1. Using the Porsche System Tester II No. 9588, select menu item 'Coding'.
2. Use the Up Arrow, Down Arrow and >> keys to select menu item 'Country coding' or menu item 'ABS/PSM':

The following points are shown under menu item 'Country coding'







The following points are shown under menu item 'ABS/PSM'

e.g. PSM

After extraction, proceed as described in the following section to change the coding:

Modify coding
The Tester shows the current coding, and re-coding is possible with the F8 key.

The brake system is coded automatically via the CAN network in the vehicle, and this coding cannot be changed.

NOTE: The workshop number from the diagnosis card is stored in the control module.

1. In menu item 'Country coding', use the Up Arrow and Down Arrow keys to select the correct version.
2. Start the coding process with the F8 key 'Coding'.
3. Wait until 'Coding has been changed.' is displayed.
4. End process with the << key.

The 'Coding' menu can now be quit with the << key.

Emergency Program
If certain faults occur, the control module changes over to an emergency program:
- The transmission fault indication is activated (4th gear and engaged gear flash alternately).
- The 'Check Engine' MIL is activated.
- The transmission shifts to 4th gear as soon as possible and stays there as long as the selector lever is in position 'D'.
- The manual driving program can no longer be selected.