B2405 , B2406
Read the instructions below then
start the fault diagnostic procedure.
Symptom: Experienced temperature in cabin is too high or low when compared to set temperature.
Air distribution does not match symbol displayed on ACC window.
Stepping motor air distribution. Damper loose. Note: May be generated if not calibrated
Stepping motor air distribution. Damper jammed. Note: May be generated if not calibrated
Fault symptom
Experienced temperature in cabin is too high or low when compared to set temperature.
Air distribution does not match symbol displayed on ACC window.
Conditions
The following conditions apply:
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When the stepping motor is run by the control module towards an end position and if the stepping motor continues more than 20% past the expected end position, the diagnostic trouble code for loose damper is generated.
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When the stepping motor works in the range 10-90 % of the damper operating range (which is 0-100 %), the control module senses if the power consumption exceeds a certain value, and generates the diagnostic trouble code for jammed damper.
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The diagnostic trouble codes may be generated if the control module has not been calibrated.
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Continuous monitoring and during calibration.
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