Cayenne S (9PA) V8-4.5L (2003)
CD changer (CDC), (optional)
Telephone/telematics (optional)
The PCM2 consists of at least two but a maximum of four MOST nodes, (Gateway, MMI and Navigation and VOCS (optional)), which communicate
with each other electronically via the MOST. Data is transferred outside of the PCM2 via the optical MOST.
Ring Break Diagnosis Line
Ring Break Diagnosis Line
The ring break diagnosis is an electrical lead, which, as a stub cable, connects the individual MOST control modules in the system with one another. The
existing MOST control modules are checked at regular intervals during communication with the control modules via the electrical/optical MOST.
Single CD
Single CD
The CD player is part of the PCM2. It is used to update the navigation system.
Telephone/Telematics
Telephone/Telematics
The telephone/telematics feature is available as an option and is linked to the PCM2 via the optical waveguide.
Terminating Resistors on the CAN
Control Unit Function - Gateway
Terminating resistors on the CAN
Terminating resistors are fitted to each end of the wiring to prevent reflection on the wiring. These terminating resistors are integrated into each control
module. The interconnection prevents the resistors from being measured with the ohmmeter from the outside.
Tuner
Tuner
The optional tuner is part of the PCM2 (installed on the main board).
Unlock Counter
Unlock Counter
Interruptions occur in the system if perfect communication is no longer possible. If the relevant threshold values are exceeded, an entry is recorded in the
appropriate control module and the 'unlock counter' is incremented.
Vehicle Hand-Over
Vehicle Hand-Over
The PCM2 is converted into production 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 modules menu and confirm with the >> key
4. Follow the instructions of the Porsche System Tester II No. 9588.
Voice Control System (VOCS)
Voice Control System (VOCS)
The VOCS is designed as a module box which can be pushed into the PCM2 (optional). After the insertion, an electronic switch is opened and the
module is integrated into the MOST ring.
Wake-Up Function
Wake-Up Function