911 Carrera 4 Coupe (996) F6-3.6L (2002)
In order to be able to assess the fault exactly, the fault memory Info key [F8] must be pressed. This information should be saved using the Save key [F4]
and printed out. If a fault code is stored with "not present" status and no other problems are present, then the fault memory must be erased.
Fault type - Frequency counter/Temperature/Voltage; Speed
Fault status
The display shows whether the fault is:
-
'Not present'
-
'Present'
in the system.
Frequency counter
When a fault first occurs, a fault entry with the status 'present' is set in the fault memory and the counter is
simultaneously set to '50'. The counter is incremented by one in the event of an error each time the system is
'booted'. The maximum count is 255.
The counter is decremented if the status 'fault no longer present' is entered and the fault does not occur again when
the system is 'booted'. The entry in the fault memory is erased automatically when the counter reaches 0. If the
error occurs again when the counter is between 1 and 49, the counter is reset to 50.
Temperature
The value indicates the temperature (temperature sensor in the gateway) at the time the fault occurred. The
temperature of the fibre optic transmitter is monitored: max 85 °C.
Voltage
The value indicates the voltage at the time the fault occurred.
Vehicle speed
The value indicates the vehicle speed at the time the fault occurred.
MOST - Optical/Electrical
MOST - Optical/Electrical
MOST signals are transferred electrically within the PCM2 and optically outside of the CDR23. Internally, the CDR23 consists of one node (GW),
which is installed in the device.
The data is transferred outside of the CDR23 via the optical waveguide, which creates a connection to the nodes in the external MOST control modules
such as external amplifiers and/or CD changers (depending on the equipment). The gateway node represents the connection to CAN comfort.
MOST Actual and Required Installed Components Lists
MOST Actual And Required Installed Components Lists
All MOST control modules that are connected to the PCM2 are entered via diagnostic tester in the 'required installed components list'. Only the MOST
control modules recorded in the MOST required installed components list are activated. An 'actual installed components list' of detected devices is
written and saved when the PCM2 is started.
MOST Lock/Most Unlock
MOST Lock/MOST Unlock
A lock occurs when the signal sent from the MMI via the MOST optical/electrical is understood and answered by the connected MOST control modules.
This applies a correct optical MOST signal. The lock is maintained until the signal is no longer detectable for a long period of time (several mue
seconds) 'unlock'.
NOTE: The 'Reset all coding/transmission counters' function can be used to reset all fault counters that were set for all components to '0'.
Ring Break Diagnosis Lead
Ring Break Diagnosis Lead
The ring break diagnosis lead 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 CDR23. It is used to play audio CDs.