Therefore, the troubleshooting sequence is given for three typical fault cases, from which you choose your particular case.
To complete the work you will need:
- multimeter;
- wires with a cross section of about 2.5 mm2;
- fuses 30 A.
The electric fan does not work at any speed
1. We prepare the car for work (see «Preparing the car for maintenance and repair»).
2. Check fuse F2 (see «Fuse and relay mounting blocks»). Replace the blown fuse. If the fuse blows again, then there is a short circuit in the electrical wiring of the electric fan (see «Checking and repairing electrical circuits») or short circuit of the fan motor (see below).
3. Disconnect the wires of the electric fan of the air conditioner from the additional resistor (see below).
4. With segments of wires, we connect one of the wires of the electric fan with a negative terminal, with «weight», and the second with a positive output of the 12 V power supply (e.g. with battery). A 30 A fuse must be inserted into the piece of wire connecting to the positive terminal (see «Checking and repairing electrical circuits»).
A good fan motor will start working, if not, the fan motor needs to be replaced (see below). If the fuse blows, it means that there is a short circuit in the electric motor, it must also be replaced (see below).
If the check of the electric fan showed its serviceability, then the cause of the malfunction should be sought in the wiring (see «Checking and repairing electrical circuits») or in the air conditioner control unit (see «Astra air conditioning control unit - check and replacement» And «Zafira climate control unit - check and replace»).
Electric fan does not work at one or more speeds
1. We prepare the car for work (see «Preparing the car for maintenance and repair»).
2. Check the additional resistor (see «Additional resistor of the electric fan - check and replace»).
3. Check the climate control unit (see «Astra air conditioning control unit - check and replacement» And «Zafira climate control unit - check and replace»).
4. Check the wiring of the electric fan (see «Checking and repairing electrical circuits»).
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