Reading Out And Writing Stopwatch Values

→ 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.

→ 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 

The PIWIS Tester II 9818  instructions take precedence since the description may be different with later Tester releases.

The procedure described here has been structured in general terms; different text or additions may appear in PIWIS Tester II 9818  .

1. Connect the Porsche System tester to the vehicle and start the System tester. Switch on ignition. [>>] Continue.
2. Select the vehicle type.
3. Switch from the vehicle type to the list of control units.
4. Select Stopwatch  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  (codings) with the cursor keys and press [>>].
7. The message Codes successfully read out  appears on the screen of the Porsche System tester. Press [>>].
8. Switch off ignition and replace control unit.
9. Switch on ignition, switch to the Special functions  menu and perform the Vehicle handover  using the [F8] key.
10. In the Special functions  menu, erase All fault memories  by pressing [>>].
11. Carry out automatic search of control units.
12. In the menu Write in data  [>>], the data read-out is installed.
13. System tester displays Coding write-in complete  [>>].
14. Quit menu, check operation of stopwatch and read out fault memory.