Driver/Vehicle Information Display: Service and Repair
WM 911019 Removing and installing display and operator control unit (PCM2)
Tools
Removing display and operator control unit (PCM2)
Information
Always observe the general notes when working with optical waveguides. => 97 General information on optical waveguides (LWL) - MOST Bus
Overview of display and operator control unit (PCM2)
Information
If the PCM2 is to be replaced by a new or a different PCM2, read out the data before removal using the PIWIS tester 9718. => 911019 Removing and installing display and operator control unit (PCM2) - section on "Reading out"
If the data cannot be read out, the new PCM2 must be coded. => 911019 Removing and installing display and operator control unit (PCM2) - section on "Coding"
1. Switch off ignition and remove ignition key.
2. Use a plastic spatula to carefully unclip the covering frame, starting from the bottom left and right.
Unclipping the covering frame
3. Unscrew the four fastening screws.
Unscrewing fastening screws and removing the PCM2
4. Carefully pull out the PCM2.
Information
- The number of plugs can vary, depending on the vehicle equipment.
5. Press lock on antenna plugs -arrows- and pull off antenna line -a, b and c-.
Antenna plug fuse
6. Release plugs -1, 2, 3, 4- one after the other -arrows- and disconnect them.
Installing display and operator control unit (PCM2)
Information
- Plug -4- must be connected first.
1. Plug in plugs -4, 3, 2, 1- in this order until they are felt to engage.
Plug sequence for PCM2
2. Push in antenna plugs -a, b, c- until the plugs are felt to engage.
3. Carefully slide the PCM2 as far as it will go into the housing in the dashboard. Make sure that the leads are not pinched.
Sliding in PCM2 and tightening the fastening screws
4. Fasten the PCM2 to the dashboard with the four fastening screws.
5. Fit the covering frame and press into place until it is felt to engage.
Fitting the PCM2 covering frame
6. Read data into the PCM2 => 911019 Removing and installing display and operator control unit (PCM2) - section on "Reading out" or code the PCM2 => 911019 Removing and installing display and operator control unit (PCM2) - section on "Coding".
Programming display and operator control unit (PCM2)
Reading out and writing values
Information
- When installing a new PCM/CDR in a vehicle, the PCM/CDR code specified in the PIWIS information system 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 info system or from your importer by specifying the vehicle identification number.
- During coding, it is essential to guarantee the power supply for the PIWIS Tester 9718. A battery charger with a current rating of at least 40 A must be connected to the vehicle battery.
- The PIWIS Tester 9718 instructions take precedence and in the event of a discrepancy these are the instructions that must be followed. Deviations may occur with later software versions.
- The procedure described here has been structured in general terms; different text may appear in the PIWIS Tester 9718 or additional information/steps may be displayed or required.
1. PIWIS Tester 9718 must be connected to the vehicle before starting it. Switch on the ignition. >> Continue.
2. Select vehicle type.
3. Switch from the vehicle type to the list of control units.
4. Use the cursor keys to select PCM2 control unit and press >>.
5. Select PCM2 MMI , then Control unit replacement in the PCM2 menu and press >>.
6. Select Read coding and press >>.
7. On the screen of the PIWIS Tester you see the message Coding read-out complete >>.
8. Switch off ignition and replace the PCM2. => 911019 Removing and installing display and operator control unit (PCM2) - section on "Removing"
9. Switch on ignition. Once you have replaced the PCM2, the data that was read out is loaded under the Write in coding menu (see Step 7). Press >>.
10. The PIWIS Tester displays the message Coding write-in complete >>.
11. Select the MOST required installed components list in the PCM2 MMI menu and compare it with the MOST actual installed components list.
12. Go to the Coding menu and select Equipment >> to check whether the coding corresponds to the vehicle equipment and code it to suit the vehicle if necessary.
13. Quit PCM2 in the PCM2 MMI menu.
14. Check the function of the PCM for the equipment installed (e.g. telephone, off-road navigation, etc.).
15. Go to PCM2 and select PCM2 MMI and Read out fault memory. Erase it if necessary.
16. PCM2 has now been taught. Disconnect Tester from the vehicle.
Coding display and operator control unit (PCM2)
Information
- When installing a new PCM/CDR in a vehicle, the PCM/CDR code specified in the PIWIS information system 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 info system or from your importer by specifying the vehicle identification number.
- During coding, it is essential to guarantee the power supply for the PIWIS Tester 9718. A battery charger with a current rating of at least 40 A must be connected to the vehicle battery.
- The PIWIS Tester 9718 instructions take precedence and in the event of a discrepancy these are the instructions that must be followed. Deviations may occur with later software versions.
- The procedure described here has been structured in general terms; different text may appear in the PIWIS Tester 9718 or additional information/steps may be displayed or required.
Information
- The installed components that are detected are displayed in the MOST actual installed components list.
- Compare the installed components detected from the MOST actual installed components list with the MOST required installed components list.
1. PIWIS Tester 9718 must be connected to the vehicle before starting it. Switch on the ignition. >> Continue.
2. Select the vehicle type.
3. Select PCM2 control unit and press >>.
4. Select PCM2 MMI in the PCM2 menu and press >>.
5. Select the Coding menu and press >>.
6. Select the Equipment menu and press >>.
The following codings can be performed:
7. PCM2 code must be selected. Then enter the relevant data and code it by pressing F8.
8. Country coding must be selected. Then select the relevant country and code with F8.
9. Vehicle type vehicle coding must be selected. Then press F8 to start coding.
10. Vehicle version vehicle coding must be selected. Then press F8 to start coding.
11. Air conditioner must be selected. Then press F8 to start coding.
12. Units must be selected. Then press F8 to start coding.
13. Right/left-hand drive vehicle coding must be selected. Then press F8 to start coding.
14. Engine version must be selected. Then press F8 to start coding.
15. Reversing camera must be selected. Then press F8 to start coding.
16. DVB-T at AV input of TV tuner must be selected. Then press F8 to start coding.
17. AV input of TV tuner selectable must be selected. Then press F8 to start coding.
18. Further customer-specific settings can be selected and coded in the same way in the other four submenus (Timeouts, Porsche Assistance, Additional and Freely-selectable codes >> e.g. for Off-Road Navi, Compass, etc., codes can be found in IPAS) of the Coding menu.
19. In the menu PCM MMI , change to MOST actual installed components list ; here a version installed in the vehicle (e.g. CD changer) must be displayed
20. Change to MOST required installed components list ; here too the same version (e.g. CD changer) must be displayed - if this is not the case, select the version and code with F8.
21. Read out fault memory and erase if required.
22. Use << to quit the menu PCM MMI and change to the menu PCM GW.
In the menu PCM GW :
23. Select Coding and press the >>.
24. Production mode off must be selected. Then press F8 to start coding.
25. Tuner parameters must be selected. Then press F8 to start coding.
26. Use << to quit the menu PCM.
27. Read out fault memory and erase if required.
28. PCM is now taught.
29. If the PCM/vehicle equipment does not have a DVD navigation unit, then adjust the time/date using the SET button on the PCM and in the menu PCM system.
30. For vehicle equipment with DVD navigation unit, switch on the PCM in clear surroundings (to load GPS almanac); as soon as four satellites are identified the almanac will reload. The time is updated again when there is a plausible GPS reception (four satellites). The date and time are also adopted once the GPS almanac has been loaded; it may be necessary to change over to summer time (daylight-saving time). This time is transferred to the instrument cluster. If the time is then manually changed by means of the instrument cluster, this time is adopted by the PCM and synchronised with GPS time.
31. For vehicle equipment with telephone, the telephone is enabled again when the telephone PIN code is entered with the SIM telephone card inserted.
Control unit replacement - PCM2
The PCM2 is provided in active production mode in new vehicles and as a spare part. Each time the vehicle is started, the stored VIN is compared with that in the instrument cluster. Provided no match is found, the device switches off after 30 seconds and the PROTECTED message appears in the display. The device is not operational.
If a match is found, the device is operational. No further checks are made while the device is connected to the vehicle electrical system.