Faults of wiper motor
- the motor is not turning on;
- wipers only work at one speed;
- wipers do not work in intermittent mode.
Symptoms of wiper motor faults
- the presence of strange sounds during wiper system performance;
- glass accumulates a significant amount of water;
- unstable operation of both or one of the wipers;
- presence of mud stains after the cycle of the wipers.
Causes of faulty wiper motor
- deformation of arms;
- wiring breakage;
- short circuit in the armature;
- failure of the motor gear cam;
- oxidation or partial closure of the limit switch contacts in the motor;
- broken wires in the armature winding of the electric motor;
- Incorrect installation of levers.
Replacing wiper motor
To replace the wiper motor, you should:
- put the wiper levers upright and unscrew the nuts;
- disconnect "minus" from the power supply;
- dismantle the wiper arms and caps on each side;
- unscrew the mounting bracket nuts;
- dismantle the rubber washers;
- remove the cover from the fuse and relay box after removing the connector with wires from the pad;
- unscrew the bolt of a wiper arm;
- tuck the plastic wires retainer and get it out of the hole;
- pull out the wiper shaft mechanism through the holes and pull out the wiper.
Helpful tips on operation, causes of faults, troubleshooting, and service intervals
Windscreen washer motor finder for