Wiper Motor Repair Guide

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murgers
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Re: Wiper Motor Repair Guide

Post by murgers » Sat Mar 19, 2011 9:07 pm

Thank you very much for this. Ill take a look tomorrow.



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Re: Wiper Motor Repair Guide

Post by Taggers » Wed Nov 16, 2011 6:32 pm

Ah! Any thoughts on this latest delight?

Speed one and intermittent (not actually intermittent, but push down, like flash) - wipers are mental. Zipping backwards and forwards like mad, threatening to fly off! Going too fast to actually clear the screen.

Second position, the one that's supposed to be fast, goes a bit slower, much less alarming. About right, I guess.

Wipers make absolutely no effort to park at all.

Don't you love old cars?

Chris


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Re: Wiper Motor Repair Guide

Post by Gemini Bob » Wed Nov 16, 2011 7:41 pm

Check the park switch on the wiper motor Chris as that determines if the intermittent etc work correctly, I just wiggled mine a bit and everything was back to normal.

New one Here


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Re: Wiper Motor Repair Guide

Post by Roger Pennington » Wed Nov 16, 2011 8:35 pm

Also SVC do them here


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Re: Wiper Motor Repair Guide

Post by Taggers » Thu Nov 17, 2011 9:15 am

It's one of their switches, it might be 2 months old!

Regarding park, I understand there should be a permanent live if the park switch is not engages. I can't find one, but then I can't work out which wire it should be either. Anyone know?

(Yes, I have looked at the wiring diagram, but forgive me, I just can't work it out)

Regarding it flapping about like a fish on a trawler, who knows?


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Re: Wiper Motor Repair Guide

Post by tony.idle » Thu Nov 17, 2011 11:05 am

There's no permanent +12v to the front wiper switch or motor. There is permanent +12 to the rear motor. 5A shown but 6-series same in principle.
5A Wiper.jpg


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Re: Wiper Motor Repair Guide

Post by Taggers » Thu Nov 17, 2011 11:24 am

Oooh, I see (not really, I don't), to make it park I should have current at 2 (brown/green) until the little nubbin on the switch is depressed?

And a good earth also (obv).

The switch in the diagram is the one on the motor, not the one on the stalk?

Have I understood?


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Re: Wiper Motor Repair Guide

Post by toomanysabres » Thu Nov 17, 2011 11:53 am

A slight disagreement there Tony. The 'permanent' feeds are the W/G's which are fused ignition on. 2 wires for the front (switch & motor) and 1 for the rear to the switch. This is 6b but 6a similar without the delay unit.
wipers 6b.pdf
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Re: Wiper Motor Repair Guide

Post by Taggers » Thu Nov 17, 2011 12:16 pm

Oh God.

Ok so, if white/green is dead, but the earth is good and the switch (on the motor) is good, and it doesn't park... it's a fault in the W/G or the column switch?

Actually... I bet it's the earth, I've said before it seems to be earthin through through the braid. I can just replace the black with a new good wire to earth can't I? It doesn't do anything cleverer than that?


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Re: Wiper Motor Repair Guide

Post by toomanysabres » Thu Nov 17, 2011 12:21 pm

With ignition on the white/green's are live. So if not its the fuse 19-20 3rd from the end.
The earth is on the single end pin of the motor plug. Measure with a voltmeter between battery earth and that pin if its connected it will read 0v or nearly. If the earth is broken somewhere then you will most likely see +12 on it. Don't just slap wires on willy nilly it will only confuse.


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Re: Wiper Motor Repair Guide

Post by Taggers » Thu Nov 17, 2011 12:47 pm

OK, Ta.

I wouldn't want to be confused.


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Re: Wiper Motor Repair Guide

Post by tony.idle » Thu Nov 17, 2011 2:06 pm

Geoff

I only looked at the 5a drawing because that's the only one I've detailed - and I didn't check which car we're considering. And you're absolutely correct about the 'permanent' lives. I aim to confuse (myself at least :))


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Re: Wiper Motor Repair Guide

Post by Taggers » Sat Jan 07, 2012 4:17 pm

Hello again all.

Didn't get long on this. But this is where we are at. The earth is good.

There was nothing at the g/w at the motor. There is nothing at the g/w at the column switch. There is nothing at the g/ws at either of the multiplugs under the dash.

I've cleaned the column switch (as best I can) it seems sound. I've cleaned and exercised all the multiplugs I could find (2x under the dash one behind the fusebox).

I've visually established that there are 3xg/ws coming from the fuse, and all seem to be firmly attached.

Now (having done nothing I expected to make any difference), the wipers work, but don't shut off!

So I switch them on, and they work, I switch them off, and they still work. The only thing that seems to stop them is turning the ignition off. They seem to stay off then until you turn them on again. I'm pretty sure they are not interested in parking.

Does that suggest anything to anyone?

Cheers all.

Chris


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Re: Wiper Motor Repair Guide

Post by scimjim » Sat Jan 07, 2012 4:27 pm

poltergeist? :-)


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Re: Wiper Motor Repair Guide

Post by piers.morrell » Sat Jan 07, 2012 4:40 pm

I had non working wipers (thread on here) and the delay unit, if you have one, was at fault. I plugged the connectors to bypass the delay unit and all worked except the intermittent now was a one wipe function off the switch. Photo on my thread shows it better! May be one problem out of the equation if you remove it from the circuit.
Also the earth for that unit ran from one of the console 'cheek pads' fitting screws to a point slap bang behind the middle of the centre console, I would check that is secure at each end first. If lucky you can access by taking the stereo out.
Good luck!


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