Reading From And Writing To The PCM Display And Operator Control Unit

WARNING: This page does not describe the selected car, but rather 9 other vehicles, including the 2013 Porsche 911, 2012 Porsche 911, 2011 Porsche 911, 2010 Porsche 911, and 2009 Porsche 911. However, it is still accessible from the selected car via links, so may be relevant.

Information

When installing a new PCM/CDR in a vehicle, the PCM/CDR code specified in the PIWIS Infosystem should be available. Normally, the code is stored in the instrument cluster and is read out from the PCM/CDR.
You can get the codes from the PIWIS information system or from your importer by specifying the vehicle identification number.
The codes must be entered in PCM MMI and PCM GW after installing PCM.
During coding, it is important to guarantee the power supply for PIWIS Tester II 9818 . 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; different text or additions may appear in PIWIS Tester II 9818 .

PIWIS Tester II 9818 must be connected to the vehicle and ignition switched on.
Select the vehicle type and start the PIDT.
Select the menu PCM MMI , Maintenance/repairs .
Select Control unit replacement in the PCM MMI menu and press [F12] to confirm your selection.
Select the Read data menu and press [F8] to start.
The message Data was read out appears on the PIWIS Tester screen. Press [F12] to continue.
Switch off ignition and replace PCM. → WM 911019 REMOVING AND INSTALLING PCM DISPLAY AND CONTROL UNIT
Switch on ignition and press [F11] to return to the vehicle type screen. Select Additional menu in the control units overview and start vehicle handover by pressing [F8].
Read out and erase all fault memories.
Press [F12] to switch from the vehicle type to the list of control units .
Select PCM MMI with the cursor keys and press [F12] to continue.
Select Control unit replacement in the PCM MMI menu with the cursor keys and press [F12] to confirm your selection.
When you select the Write data menu, the data that was read out (see Step → 5.) will be loaded. Press [F12] to continue.
The PIWIS Tester displays the message Data has been written . Press [F12] to continue.
Select the menu PCM MMI , Maintenance/repairs .
Select the Required & Actual configuration menu and confirm your selection by pressing [F12].
Compare the Actual/Required listing. Press [F8] to start the Mapping . All installed audio components will now be listed with a plus under Actual/Required.
Read out the fault memory and erase it if necessary.
PCM is now taught.