911 GT2 (996) F6-3.6L Turbo (2003)
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Amplifier optional (Harman or BOSE)
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CD changer
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Telephone/telematics
Identification
The diagnosis software number and the part numbers for the PCM2 can be read out under this menu item.
1. Connect and start Porsche System Tester II No. 9588 and switch on the ignition.
2. Select '911 Turbo (996)' in the vehicle type menu and confirm with the ->| key.
3. Select 'PCM' in the control modules selection and confirm with the >> key.
4. Select 'PCM2-GW' in the PCM2 function selection and confirm with the >> key.
5. Select the "Identification" menu item and press the >> key.
6. The message "Diagnosis software number; parts number PCM2" appears on the display
NOTE: Deactivate the 'automatic traffic announcement' before performing the diagnosis on the PCM2. If this is not done, the diagnosis will abort.
Actual Values
It is possible to read out the unlock counter under the 'Actual values' menu item.
Menu Item
Function
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Unlock counter
Under this menu item, it is possible to check the electrical and optical MOST during troubleshooting.
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Connect and start the Porsche System Tester II No. 9588 and switch on the ignition.
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Select '911 Turbo (996)' in the vehicle type menu and confirm with the ->| key.
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Select 'PCM' in the control modules selection and confirm with the >> key.
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Select 'PCM2-GW' in the PCM2 function selection and confirm with the >> key.
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Select the 'Actual values' menu item and confirm with the >> key.
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Select the "Unlock counter" menu item using the > key and confirm with the >> key.
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Read out values from the display field.
Lock/Unlock
There is a lock present when the MOST signal sent by the MMI (electronically or optically via the optical waveguide) can be recognised by the
connected MOST control units.
Man Machine Interface (MMI)
The MMI is part of the PCM2 (on the mainboard) It runs the gateway commands via the wake-up signal line and the diagnosis of the distribution line.
MOST Actual Installations List/MOST Required Installations List
All MOST control modules that are connected to the PCM2 are entered in the 'required installations list'. An actual installations list is written and saved
when the PCM2 is started.
MOST - Optical/Electrical
MOST signals are transferred electrically within the PCM2 and optically outside of the PCM2. Internally, the PCM2 consists of at least 2 nodes (GW
and MMI), which are installed in the device and can also be expanded by adding the navigation and VOCS nodes.
The data is transferred outside of the PCM2 via the optical waveguide, which creates a connection to the nodes in the external MOST control modules
such as external amplifiers, CD changers and/or telephone/telematics (depending on the equipment). The gateway node represents the connection to
CAN Comfort.
MOST Switch
The MOST switch is part of the PCM2. It keeps the electrical MOST closed if no other MOST control module is optically connected to the MOST. The
MOST switch is opened when a light signal is received from the connected MOST control modules.
NOTE:
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When the PCM2 is replaced, the coding must be performed in accordance with the connected MOST control modules.
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When the 'Switch closed' parameter is set, the switch remains closed even in existing MOST control modules. Communication is then not possible.
Navigation
The navigation module is designed as a module box which can be pushed into the PCM2 (optional). After inserting, an electronic connector is