Cayenne S (9PA) V8-4.5L (2003)
Fault Code Setting Conditions
Fault codes can be set in several circumstances, e.g.:
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Battery disconnected
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Plug connections disconnected
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Incorrect coding
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Voltage drop
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etc.
In these circumstances, no fault is present in the system and the fault memory must be erased.
Possible Causes of Fault
Possible Causes Of Fault
NOTE: The possible causes of fault that are responsible for the fault are listed here. Please note that in certain circumstances further faults can be stored
in the fault memory after troubleshooting (e.g. if plugs are disconnected). After carrying out repairs, read out the fault memory of all control modules and
erase any faults.
Causes of CAN faults:
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No or incorrect basic setting/adaption (control module)
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Short circuit to B+ (CAN lead)
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Short circuit to ground (CAN lead)
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Short circuit with respect to each other (CAN lead)
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Open circuit (CAN lead)
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High and low confused (slot in connector, or wires separated and repaired incorrectly)
Troubleshooting Procedure
Troubleshooting procedure
Troubleshooting can only be performed when the fault is present. In other words, specific troubleshooting can only be performed in accordance with
instructions (given under Diagnosis/troubleshooting for each fault code) if the entry has the status present in the fault memory.
If the fault is currently not present, please check the following:
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Diagnostic conditions are met
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All plug connections and ground points of the affected current path are OK
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View the fault frequency counter in the Porsche System Tester II 9588 using the fault memory Info key F8 under Extended fault memory and try
to reach conclusions about eliminating any loose contacts in the system.