9-3 Viggen Coupe (9400) L4-2.3L Turbo (B235) HO (1999)
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The Saab Trionic control module has different part numbers for cars with manual gearbox and automatic transmission respectively.
Diagnosis
-
If the control module program memory ROM or working memory RAM is defective, diagnostic trouble code P0605 will be generated.
Control Module Power Supply
+30
The main relay is supplied with +30 from maxifuse 2. Control module pins 1 and 48 are powered from fuse 28. The control module uses +30 for its
memory.
Diagnosis
If +30 is absent, the engine will not start and the system cannot be contacted with the diagnostic tool.
