Diagnostic Conditions

Diagnosis conditions

NOTE:
- Important. Switch off all unneeded loads before starting diagnosis. When working with the ignition switched on, connect a suitable battery charger to the vehicle battery or to the jump lead starting terminals intended for this purpose.
- Only if the preconditions listed under 'Diagnostic conditions' have been met is/was it possible for the control module to recognize the fault. For this reason, it is necessary to comply with the specified procedure after remedying a fault:

1. Erase fault memory once you have printed or stored it
2. Meet the prerequisites listed under 'Diagnostic conditions' or carry out a short test with the 9588 Porsche System Tester II. 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.
3. Read out the fault memory again.