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Home >> Saab >> 2003 >> 9-3 SE, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 5 (Automatic A/C-Heater Systems) >> Diagnostic Tests >> DTC B2405 & B2406: Air Distribution Damper Stepping Motor (Loose Or Jammed Damper) >> Diagnostic Procedure

Diagnostic Procedure

WARNING: This page is about a different car, the 2001 Saab 9-3 and 2000 Saab 9-3. However, it is still accessible from the selected car via links, so may be relevant.
  1. Remove air distribution damper stepping motor without disconnecting 6-pin connector. See Figure . Simultaneously press AUTO and OFF buttons on ACC control panel to activate ACC system calibration. If stepping motor operates, go to next step. If stepping motor does not operate, replace air distribution flap stepping motor. When repairs are complete, go to step  3 .
  2. With stepping motor removed, manually operate air distribution damper. Ensure damper is not sticking or has loose or damaged components. If damper is okay, reinstall damper stepping motor and calibrate ACC system. Go to next step.
  3. If no new DTCs are detected, repair is complete. Using scan tool, clear all DTCs from all systems. Recheck A/C system operation for original complaint. If A/C system is operating properly and no DTC has been detected, repair is complete. If a DTC has been detected, a control module may need to be replaced. See CONTROL MODULES  under COMPONENT TESTS.
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