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Fault with windscreen wipers


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#1 burty

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Posted 12 June 2019 - 06:11 PM

I have a UC torana that has an intermittent fault with the wipers. They still work as designed however they randomly activate and move 1/4 to 1/2 way up the windscreen.
Have checked other forums and haven't come across the same issue.
Any suggestions would be welcome.

#2 Rockoz

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Posted 12 June 2019 - 09:13 PM

Possibly a faulty switch.
Hard to imagine 2 seperate opposite type faults happening anywhere else.

Needs a short somewhere across switch contacts to get them to move.

Then an open circuit to take away the supply that gets them to self park.

Does it have a intermiittent wipers?

Possibly internal to motor as well.

See how easy it is to remove the electrical cover off the wiper motor and look for broken bits in there

Intermittent faults can take hours and even days to track down

Check all your earths as well. Behind the dash and around the motor.

Will grab a diagram tomorrow if I have time and see if I can narrow it down a bit more



#3 burty

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Posted 12 June 2019 - 09:38 PM

Thanks for the advice, gives me a couple of places to start. The wipers don't have intermittent just off, 1 & 2 speed.
I'll check the motor first as the cover is accessible.

#4 VDO

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Posted 13 June 2019 - 09:26 AM

It will most likely be in the switch.

 

There's nothing in the motor that would cause the random movement.



#5 burty

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Posted 17 June 2019 - 05:42 AM

Rare spares have replacement indicator, wiper dip switch stem/lever and wiring for about $65 will give that a go first.




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