Replacing The Gateway Control Unit
Information
If automatic coding is not possible, manual coding is to be carried out in accordance with vehicle equipment.
NOTE:
Voltage drop
- Risk of irreparable damage to control unit
- Risk of damage to control unit
- Fault entries in the control unit
- Coding in the control unit is aborted
- Malfunctions in control unit, even during programming
→ 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 additional information may appear in PIWIS Tester II 9818 .
- Connect the Porsche System Tester to the vehicle and start the System Tester. Switch on ignition.
- Select the vehicle type and start the PIDT.
- Select the required control unit Gateway in the overview and press [F12] to continue.
- Select Maintenance/repairs .
- Select Control unit replacement and press [F12].
- Read data and press [F12].
- Press [F8] to start reading out data.
- Check the chassis number and press [F12].
- Switch off ignition and replace the control unit. → 903519 REMOVING AND INSTALLING GATEWAY CONTROL UNIT .
- Switch on ignition. Select the Write data menu (procedure described above), press [F12] and then press [F8] to start installing the data that was read out.
- The System Tester displays the message Data has been written . Press [F12] to continue. Switch ignition off and then on again.
- Select coding , adjustment .
- Automatic coding and [F12]. Follow the instructions on the tester.
- Read out the fault memory and erase it if necessary.