Diagnostic conditions
NOTE:
- Important! Switch off all unneeded loads before starting diagnosis. Connect a suitable battery charging device if you will be working for extended periods with the ignition switched on (approx. 15 minutes or more).
NOTE:
- Only if the preconditions listed under Diagnostic conditions have been met is/was it possible for the control module to recognise the fault. For this reason, it is necessary to comply with the specified procedure after remedying a fault:
- Erase fault memory once you have printed or stored it
- Meet the prerequisites listed under Diagnostic conditions or carry out a short test with the Porsche System Tester II 9588. It is important to remember here that faults can only be detected with the DME control module based on reset adaptation values (particularly for fuel supply and misfire detection) after driving the vehicle for a long time. It may be possible to observe the relevant adaptation values (actual values) during a subsequent road test in order to pinpoint a particular tendency.
- Read out the fault memory again