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Home >> Saab >> 2001 >> 9-3 Base, 4D Hatchback, Automatic >> Repair and Diagnosis (Single Page) >> Body & Frame >> Mirrors >> Glass, Windows And Mirrors >> Fault Diagnosis, Symptom >> Ventilation fan and electrically heated rear window cannot start until 20 s after ignition on >> Diagnostic help

Diagnostic help

Ignition +54 can be read in DICE using the diagnostic tool.

If +54 is absent when +15 is present, the bus message Ignition +54 ON is generated after 20 s.

The ACC uses the bus message Ignition +54 to disengage the ventilation fan while the engine is being started.

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