How high power motor wiper passenger cars need to detect? How to detect bad?
First measured the wiper motor plug, when the ignition switch to have 24 v voltage? If no voltage, please check whether the fuse fusing. If there is a voltage, for the next step:
In open ignition switch, and open the wiper switch when the first or the second gear (can be a low speed or high speed), measure the wiper motor is different from the outside of a 24 v voltage? Control (the anode) if you have, can prove that line and the switch is normal. Point of failure in the wiper motor.
There is also a situation. The excavator is to control the negative (term) which requires the positive pens and pick up on the 24 v power supply, multimeter and negative pens and after open the wiper switch, ordinal measurement plug if there is a loop, namely 24 v electricity. If you have, can judge fault parts in wiper motor, if not, you should check the fuse and switch.
According to experience, failure rate is higher, in turn, are: fuse, wiper motor.
Wiper switch does not damage easily.
