Programming DME (DFI) Control Unit: Notes

Information 

• During programming, the electric radiator fans may start. 

Information 

No more than 300 seconds must elapse between switching on the ignition and starting programming.

If this time is exceeded, the control unit cannot be programmed.

If programming cannot be carried out, switch off the ignition, lock and unlock the vehicle and then start programming again.

→ Prior to disconnecting the control unit, switch off ignition and remove ignition key.

→ Ensure that the power supply is not interrupted during programming.

→ Connect a battery charger with a current rating of at least → Nominal value: 40 A  to the vehicle battery.

Information 

If a new DME (DFI) control unit is installed in a vehicle, the immobilizer code documented in the PIWIS information system must be taught in the DME control unit using the Program immobilizer code  menu.

When programming the DME (DFI) control unit, it is essential to guarantee the power supply for the Porsche System Tester. A battery charger with a current rating of at least 40 A must be connected to the vehicle battery.

The PIWIS Tester II 9818  instructions take precedence and in the event of a discrepancy, these are the instructions that must be followed. Deviations can occur with later software versions.

The procedure described here has been structured in general terms and has been described for version 21.110. Different text or additions may appear with later Tester versions.

Information 

In some countries (currently USA, Canada), the Ready status must be obtained following a test drive or by using PIWIS Tester II 9818  after a DME (DFI) control unit has been programmed. If in doubt, contact the relevant importer.

The DME (DFI) control unit must be adapted in accordance with specifications → 24701900 REMOVING AND INSTALLING DME CONTROL UNIT  - section on "Information".

→ Prior to disconnecting the control unit, switch off ignition and remove ignition key.

→ Ensure that the power supply is not interrupted during programming.

→ Connect a battery charger with a current rating of at least → Nominal value: 40 A  to the vehicle battery.

1. Re-program the DME control unit using the PIWIS Tester with test software version 27.000 (or higher) installed. 
   1. 1.1. Select the DME/DFI, Programming  menu and press [F12] to continue.
   2. 1.2. Select the Control unit programming  menu and confirm your selection by pressing [F12].
   3. 1.3. Read and follow the programming instructions on the PIWIS Tester. Then press [F12] to continue.
   4. 1.4. Select the vehicle type  and confirm your selection by pressing [F12].
   5. 1.5. Select the relevant country  and confirm your selection by pressing [F12].
   6. 1.6. Press [F8] to start programming the DME/DFI control unit.

      A progress bar appears showing the progress of the programming procedure. Do not interrupt programming.

   7. 1.7. Once control unit programming is complete, follow the instructions on the PIWIS Tester.
   8. 1.8. When programming is complete, the message "Programming was completed successfully" will be displayed. Press [F12] to continue.

      Confirm the next message relating to engine torque loss adaptation by pressing [F12].

   9. 1.9. Press [F11] to return to the → 'Control units' menu (control unit overview).
2. Switch to the Program immobilizer code  menu by pressing [F12].
3. Enter the Old/New immobilizer code  (PPN) and press [F12] to confirm your entry. Check the code again and press [F8] to write the code.
4. When the programming period is over, follow the instructions on the Porsche System Tester.
5. For the learning and adaptation routine of the throttle valve (electronic accelerator), switch the ignition off and then on again for 60 seconds without starting the engine. Do not actuate the accelerator pedal. Switch ignition off again for at least 10 seconds. Switch on ignition. This completes the adaptation of the throttle valve adjusting unit and the programming sequence is complete.
6. Read out the fault memory and delete the DME/DFI control unit fault on every control unit connected to the CAN.
7. Carry out a test drive, adapt DME/DFI control unit (perform adaptation of the fuel high-pressure control system) → 24701900 REMOVING AND INSTALLING DME CONTROL UNIT  - section on "Information" and read out the fault memory.