Basic multimeter help troubleshooting rear wiper/washer motor on mk4 golf gti.

[cerebral]

Ok I've had another quick look, can't see anything loose around the washer bottle.

Should I be getting a reading from one of the green wires when the wiper function is engaged?

[itavaltalainen]

The green-red and green-white wire should have 12V across when you push the stalk so that water should come out. Can't tell you which is positive and which is negative. The wiring diagram does not really tell you.

[cerebral]

So I'm meant to be putting one probe on green/red the other on green/white? I've been putting one on earth all the time lol

[itavaltalainen]

You can check between wires and also against gnd. Depending on how it goes you might be able to measure 12v.... if you can't then do continuity check with ignition switched off.

[cerebral]

Found a 2nd hand motor on ebay for £17.40 and  got a £5 discount for spending over £15, fitted earlier and wiper is working great, the washer nozzle isn't working tho and is leaking from the connector in the boot! Tried swapping it but it's a slightly different fitting, so i'll have to try cleaning it out with a bit of wire, failing that i'll see if I can get  replacement from the stealers.

Might need to look at replacing a bit of the tubing and connector but i'll see how I get on with the nozzle first.

On another note there wasn't much power coming from the blowers, was better if I set it to recirc so changed the pollen filter. Wow that thing was disgusting, totally black and rock hard. What a difference to the heaters, total change, would of thought it would make so much difference. Checked the air filter too but that looked brand new.

Thanks for all your help itavaltkainen, I've been looking at how to do a continuity test so will have a play around with that when I get chance.