Self-adjustment must be performed when the climate control unit or the damper motor has been replaced and when the damper motor or the linkage have been disconnected. During the adjustment, the control unit learns the end positions of the damper motors.
Note:
Before self-adjustment is performed on a new control unit, the green LED indicator in the AC-button will flash until the self-adjustment is performed. On an old control unit the green LED indicator will only flash during the actual self-adjustment.
Estimated time for the self-adjustment is 30 sec.
If self-adjustment has been performed once in the current ignition cycle, the control unit will not perform a self-adjustment again until the ignition has been switched off and the engine is started again.
Test prerequisites:
Battery voltage higher than 12V.
Engine running.
No faults in the system.
All consumers inactive.
Procedure:
Choose the function: "Self-adjustment damper motor".
When the self-adjustment is performed (estimated time 30 sec.) the green LED indicator stops flashing.
If the self-adjustment of the damper motor fails check and adjust any faults in the system.