Each engine is turned on by a switch and, for the most part, manually. In the case of an electric antenna, the switch is controlled automatically by the radio receiver.
1. Check motor fuse, replace if necessary.
Attention! The electric motors for the windows and the sunroof have safety switches that, as a result of excessive load, turn off, then, after a while, turn on again. Before switching on again, the cause of the overload must be eliminated. The causes may be frozen windows or dirty glass guides.
2. If the fuse blows again, then there is a short circuit somewhere.
3. In order to immediately find out whether the engine is working or not, connect two additional wires (about 2 mm) from the vehicle battery directly to the engine. Positive wire to the positive pole, negative wire to the negative pole of the motor. In doubtful cases, the location of the poles is indicated in the wiring diagram. If necessary, the engine can be removed. All electric motors of the machine operate on the voltage of the on-board network (12 to 14 V). If the motor is running, then there is a break in the current circuit.
Attention! A motor that spins slowly or not spinning at all may indicate worn graphite brushes. In this case, replace the graphite brushes.
4. If the engine is running, determine from the wiring diagram which wire supplies it with current if the ignition and switch are turned on.
5. Check the wire supplying voltage to the electric motor with a test lamp. Since the current is large enough, then check with an incandescent lamp, which has sharp needles for piercing the connecting wire. This makes it easier to check the voltage. The connecting terminals of the electric motors are marked with small numbers. They are normalized:
- terminal 32: earth connection,
- terminal 33: positive (+) compound.
Left-hand rotation motors, such as power windows, have two positive connections:
- terminal 33L: counterclockwise rotation connection,
- terminal 33R: right hand rotation.
Attention! The wiper motor has a special terminal designation (see subsection 10.5).
6. If there is no voltage to the motor, the circuit is faulty. Find the fault in the wiring diagram and fix it. Electric motors, due to the high current consumption, have additional switching relays.
7. If no fault is found, check the switch.
8. If the cable is faulty, then it makes sense to lay a new cable, since it is very difficult to detect a break in it.
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