Should the interior blower fail partially or completely in above vehicle, a defective electric blower controller might be the cause.
In case of a defective electronic blower controller, the functioning of individual or of all blower levels could be impacted. The fuses should initially be checked. The controller itself is installed in the passenger footwell area and can be easily uninstalled by removing two screws. Using a circuit diagram and multimeter, it is possible to check with the 3-pin plug of the blower controller in how far the power supply is working.
Should you recognize traces of overheating (image) on the plastic housing, this can already be an indication of a defective controller.
Important safety notice
The following technical information and tips for practical use have been set up by HELLA in order to offer professional support to automotive workshops in their daily work. The information available here on this website is only to be used by appropriately trained specialist staff.
The reprinting, distribution, reproduction, exploitation in any form and disclosure of the contents of this document, even in part, is prohibited without our express written approval and indication of the source. The schematic illustrations, figures and descriptions are for explanation and presentation of the document text and cannot be used as a basis for installation or design. All rights reserved.
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