Cause of malfunction | Elimination Method |
Wiper motor not working | |
Damaged wires, oxidized or loose ends, blown fuse F2 | Crimp terminals, replace faulty wires, fuse. Eliminate the cause of its burnout |
Brushes stuck to glass | Turning the ignition key to position «turned off», carefully separate the brushes from the glass, check the integrity of the rubber scraper, restore the mobility of the brush connections |
A foreign object has fallen between the moving parts of the crank | Check the correct installation of the levers, straighten the deformed levers or replace the wiper |
Wiper stalk switch defective | Replace faulty switch |
The brushes of the electric motor are stuck, the collector is very dirty or burnt | Eliminate stuck brushes, clean the collector or replace the gearmotor |
Open or short circuit in the motor armature winding | Replace gearmotor |
Wiper motor not intermittent | |
Faulty wiper relay | Replace relay |
Steering column switch faulty | Replace faulty switch |
Wiper motor does not stop intermittently | |
Faulty wiper relay | Clean the breaker contacts, replace the relay if necessary |
The contact plate of the limit switch of the gearmotor does not bend when passing the cam | Disassemble the gearmotor and bend the contact plate or replace the gearmotor |
Limit switch contacts oxidized | Clean the contacts or replace the wiper motor |
Brushes stop at random position | |
Limit switch contacts are poorly pressed or oxidized | Clean the contacts, bend the switch plate if necessary or replace the gearmotor |
Loose crank nut on gear motor shaft | After installing the crank correctly, tighten the nut (apply paint or anaerobic sealant to the threads beforehand) |
Wiper motor runs but blades do not move | |
Loose crank nut on gear motor shaft | After installing the crank correctly, tighten the nut (apply paint or anaerobic sealant to the threads beforehand) |
Gear teeth chipped | Replace gear or gearmotor |