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Coding vehicle electrical system control unit Programming the vehicle electrical system control unit: Reading out and printing out values WARNING Sudden voltage interruption of the power supply to the control module. Destruction of the control module. • → During programming, it is essential to guarantee the power supply for the Porsche System tester. It is essential to connect a battery charger with a current rating of at least 40 A to the vehicle battery. → Prior to disconnecting the control module, switch off the ignition and remove the ignition key. Note Follow the instructions on the Tester. 1. Connect the Porsche System Tester to the vehicle and start the System Tester. Switch on the ignition. >> Continue. 2. Select vehicle type using the cursor keys. 3. Switch from vehicle type to list of control units >> . 4. Select the relevant control unit with the cursor keys and press the >> key. 5. Select Control Unit Replacement with the cursor keys and press the >> key. 6. Select Read Out Values (Code) with the cursor keys and press the >> key. 7. The message "Reading code" will appear on the screen of the Porsche System Tester. Press the >> key. 8. Switch off ignition and replace control unit. 9. Switch on ignition. After replacement of the control unit, the vehicle data that has been read out is transferred to the new unit using the "Write data" menu option (see Section 6). Press the >> key. 10. System Tester displays Coding write-in complete. Press the >> key. 11. Read out fault memory again and erase. Diagnostic system: reading out fault memory and activating systems Coding vehicle electrical system control unit 4289 |