Cayenne S (9PA) V8-4.5L (2003)
The data is transferred outside of the PCM2 via the optical waveguide, which creates a connection to the nodes in the external MOST control units such
as external amplifiers, CD changers, and/ or telephone/telematics (depending on the equipment). The gateway node constitutes the connection to CAN
Infotainment.
MOST Switch
MOST Switch
The MOST switch is part of the PCM2. It keeps the electrical MOST closed if no other MOST control unit is optically connected to the MOST. The
MOST switch is opened when a light signal is received from the connected MOST control units.
NOTE:
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When the PCM2 is replaced, the coding must be performed in accordance with the connected MOST control units.
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When the 'Switch closed' parameter is set, the switch remains closed even in existing MOST control units. Communication is then not possible.
Navigation
Navigation
The navigation module is designed as a module box, which can be inserted in the PCM2 as an option. After the insertion, an electronic switch is opened
automatically and the module is integrated into the MOST ring.
PCM2 Control Unit (Head Unit)
PCM2 Control Unit (Head Unit)
The PCM2 control unit (head unit) includes the following components:
Internal:
PCM2 gateway
PCM2 Man Machine Interface (MMI)
Internal amplifier (optional, depending on the equipment)
Tuner
Single CD
Navigation (optional/insertion)
VOCS (voice control system) (optional/insertion)
Controller Area Network (CAN) Comfort
MOST switch
External:
External amplifier (optional, Harman or BOSE)
Telephone/telematics (optional)
CD changer (CDC), (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 via the electronic MOST. Data is transferred outside of the PCM2 via the optical MOST.
Ring Break Diagnosis Line
Ring Break Diagnosis Line
The ring break diagnosis line is an electrical lead, which, as a stub cable, connects the individual MOST control units in the system with one another.
The existing MOST control units are checked at regular intervals during communication with the control units 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 In The CAN