Communications Control Module: Service and Repair
WM 919019 Removing and installing control unit for telephone
Tools
Install location
Removing control unit for telephone
Information
- The control module is located under the right front seat.
The ignition key must be removed before starting the assembly work.
Move right front seat all the way forward and up.
1. Undo both fastening screws on the telephone control unit.
Fastening screws
2. Lift out the control unit from the holder -arrow-.
3. Press latch on the electrical plug -A- and open the locking lever -a- , remove plug.
Electrical plug connections
4. Press latch on the electrical plug -B- for optical fibre and remove plug.
5. Turn over control unit, press latch on the antenna plug -C- and remove plug.
6. Remove control unit.
Installing control unit for telephone
Information
- The Porsche System Tester 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.
1. If the control unit has to be replaced, the coding must be read out prior to removal using the PIWIS Tester P 9718. => 919019 Removing and installing control unit for telephone - section on "Coding"
Information
If a new telephone control unit is installed, an adapter cable for the antenna line must also be installed on vehicles of model year 2003 and 2004. See Spare Parts Catalogue.
- Plug in adapter cable on wire harness connector until the connector is felt to engage.
Adapter cable for new telephone control unit
2. Push in electric plug connections -C, B- until plugs are felt to engage.
Electric plug connections
3. Position plug -A- and lock it with the locking lever until the retainer clicks into place.
4. Engage the control unit in the holder -Arrow- and screw down with both fastening screws.
Engaging control unit in holder.
5. If a new control unit was installed, it must be coded. => 919019 Removing and installing control unit for telephone - section on "Coding"
Coding control unit for telephone
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.
Information
Follow the instructions on the Tester.
Later versions of the software may display slightly different text or require a slightly different procedure. The instructions you receive from the tester itself take precedence over this description.
1. Connect the Porsche System Tester to the vehicle and start the System Tester. Switch on the ignition. >> Continue.
2. Select the vehicle type.
3. Using the >> key, move from Vehicle type to the list of Control units and perform the automatic control unit search.
4. Select PCM2 with the cursor keys and press the >> key.
5. Select Telephone with the cursor keys and press the >> key.
6. Select Coding using the cursor keys and press >>.
7. Select Read out coding (codings) with the cursor keys and press >>.
8. Switch off ignition and replace control unit.
9. Switch on ignition. Select Control unit replacement Write in coding >> to install the data that was read out.
10. Change to the Coding menu, select the following coding variants in sequence and code the vehicle equipment by pressing F8. Follow the instructions on the Tester.
10.1. Vehicle type vehicle coding
10.2. Vehicle version vehicle coding
10.3. Air conditioning
10.4. Right/left-hand drive vehicle coding
10.5. Engine version
11. Switch to Telephone function selection and then read out the fault memory and erase it.