9-5 Sport Wagon (9600) V6-3.0L Turbo (B308) (2003)
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27.
Remove the stepping motor.
28.
Remove the air duct from the heating and ventilation unit.
29.
Check whether and where the air mixing damper shaft is ruptured (by using a mirror). Wipe away any grease to see properly.
30.
If the shaft is not broken then check the function of the stepping motor (detached motor) using Tech2 (the "Activate" menu).
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If the shaft and stepping motor are in working order then check whether the heat can be controlled manually by rotating the shaft manually
