Fault diagnosis by symptom

WARNING: This page is about a different car, the 2011 Saab 9-3 and 2010 Saab 9-3. However, it is still accessible from the selected car via links, so may be relevant.

Using fault diagnosis by symptom is more difficult to determine in advance which control module should be contacted to read values or activate. Accordingly the diagnostic tool has been divided into operations. You no longer contact a control module but an operation, that is a virtual control module. This means that with a fault on e.g. the left flashers you do not need to think about which control module is involved in the operation, you just select "Left flashers" from the menu. The diagnostic tool will then present the values and activations from all control modules involved in the left flashers operation. If you find something wrong, you can then see which control module the value came from and then perform fault diagnosis using, e.g. the wiring diagram.