Control System, Automatic Transmission
FAULT DIAGNOSIS HINTSSelf-diagnosis is incorporated in the Transmission Control Module (TCM) system. This means that the TCM is equipped with a built-in diagnostics function which records any faults that may arise in the system.
In the case of certain faults, a signal is sent from pin 6 of the TCM to the main instrument display panel which lights up the "CHECK GEARBOX" warning lamp at the same time as diagnostic trouble codes are generated.
The Intelligent Saab Tester Scan Tool is used for fault diagnosis and obtaining readouts of diagnostic trouble codes.