Saab 9-3 - Passenger compartment fan | HELLA
Saab
9-3 (YS3D)
Year of manufacture: 1998 - 2003
Passenger compartment fan
In the above vehicles, a defective fan control unit can result in the passenger compartment fan operating only at the highest speed.
If the fan speed can no longer be controlled by the control unit or the fan operates only at the highest setting, the cause is probably a defect in the electronic fan control unit. In most cases, the transistor (MOSFET) on the circuit board has failed.
In addition to replacing the fan control unit, somewhat skilled technicians could also repair the control unit by replacing the transistor. For this procedure, the following accessories/replacement parts are needed:
- Transistor (Type IRFP064N)
- Soldering iron, ca. 30W
- Desoldering pump
- Solder
- Thermal grease
- Screwdriver, narrow
- Blade
- Harness tape, temperature-resistant
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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