Control Module Function - External Harman Amplifier

Control module 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 model range code that is stored is compared with the code in the instrument cluster. If 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

Replacing CDR23 control modules
The PCM2 is converted to delivery mode (low-current mode) in production. As known from other systems (alarm system, instrument cluster, roll-over bar), the PCM2 must be activated with the 9588 Porsche System Tester II
1. Connect and start the 9588 Porsche System Tester II and switch on the ignition.
2. Select 'Special functions' in the Vehicle type menu and confirm with the [>>] key.
3. Select 'Vehicle hand-over' in the Control modules menu and confirm with the [>>] key.
4. Follow the instructions of the 9588 Porsche System Tester II.