Reading Diagnostic Trouble Codes

Diagnosis/Troubleshooting

NOTE: The fault memory Info key F8 on Porsche System Tester II No. 9588 can be used to access the 'extended fault memory'. The following information can be displayed:

Possible fault types:
- no signal/communication
- implausible signal/please read out fault memory

This information should be saved using the Save key F4 and printed out.

Fault status
The following status types are possible:
- present
- not present

This information should be saved using the Save key F4 and printed out.

NOTE:
- Visual inspection: During troubleshooting, please check first that the affected pins on the control module plug connection are neither damaged nor corroded. The wires and plugs of the affected components must also be checked for external damage and correct contact. Repair damaged or corroded pins if possible, otherwise replace affected pins. Repair or replace damaged wires.
- Battery positive voltage: A battery positive voltage of between 11.4 and 14.5 V is required for troubleshooting. This must be checked and ensured if necessary. Voltages must be ensured up to components or fuses (input side) on the vehicle electrical system.