911 Carrera Cabriolet (996) F6-3.4L (1999)
The PCM2 is supplied 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 system.
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 Porsche System Tester II No. 9588.
1. Connect and start the Porsche System Tester II No. 9588 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 units menu and confirm with the >> key.
4. Follow the instructions of the Porsche System Tester II No. 9588.
External Harman Amplifier Tools
External Harman Amplifier Tools
The following testers are required for vehicle diagnosis:
Porsche System Tester II No. 9588
Commercially Available Digital Multimeter
Measurement Tool Set No. 9684