Fan Troubleshooting

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PROCEDURE
  1. If the fan does not run in any switch position, immediately check the corresponding fuse in the fuse box.
  2. If the fuse is OK, then check the fan switch. To do this, dismantle the control unit as described above.
  3. Check if voltage is applied to the terminals of the multi-pin connector. If it is missing, then check the wiring coming from the fuse box.
  4. In the next step, check the switch in all positions «for patency». To do this, connect a multimeter.
  5. A defective switch should be replaced. As experience shows, repairs do not increase the duration of its operation.
  6. If the switch is OK, then check the ground connection at the fan motor.
  7. If no defect is found here, then the fan motor is faulty (carbon brushes burned out, armature winding melted).







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