Washer pump issue

[Flyingfish]

The washer pump on the Clio no longer works, so I assumed a new pump would sort it and it seems not! If I put a multimeter with one probe in each pin and activate the wash wipe, there is 12.5 volts there but the new pump still doesn’t go.
If I check for continuity to ground neither wire seems to have it is this normal? It’s a 200 with keycard and there’s only one plug on the bottle with the below wiring:

It just has me baffled as surely with 12v it should be working! I’ve wedged a couple pieces of wire into the pump as I couldn’t get a probe in and direct form a battery the pump does go.
Any thoughts ?
TIA

 

[R20BTG]

Faulty stalk?

 

[Flyingfish]

When I activate wash wipe the pump has power so I wouldn’t have thought so

 

[EthanMenace]

Have you tried putting 12v across the pump off the car?

 

[Flyingfish]

I did connect to a battery and the pump works!
I was trying to work out if one pin should be a ground as there isn’t one. But done have access to the diagrams atm

 

[EthanMenace]

Sorry missed that part of the original post.
I’d agree it sounds like a grounding issue, I vaguely recall a few stalk related grounds coming from two metal prongs behind the stalk. I had an issue with the horn not working and had to bend them forwards and it fixed it. Not sure if washer pump is the same, I don’t have access to diagrams right now but maybe something in here will be useful?

Hi all,looking for the Visu wiring diagram for a mk3 Clio

Looking for the Visu wiring diagram manual for a Clio III,part i'm really after is the part naming all the pins of the UCH.Thanks.

clio197.net

 

[Flyingfish]

Thanks I’ll take a look. It’s a weird one for sure as there’s 12+ v using a meter and both pins of the plug at the pump when the wash operated but no earth to body which to me seems strange

 

[Flyingfish]

could anyone clarify that with only 2 wires to what’s a 2 function pump the 12v trigger ‘switches’ between pins to activate front or rear. So in theory at worst the wire that activates the rear pump could be de pinned and the wire replaced with one that goes to ground to activate the pump. Or am I trying to oversimplify things and will kill something

 

[SRX600]

Try putting a low wattage bulb across the feed. This will load test it, if there is a bad earth there will not be sufficient current to allow the bulb to light up. As its a bulb it will only draw a limited current so shouldnt be an issue with fuses.

 

[VeiRoNv2]

asfaik if there's voltage it doesn't necessarily mean it will work,you would need to put a load on the feed as said to test the circuit,it might be okay with voltage when there is no load on it but no voltage when you put a draw on it if that makes sense

 

[Flyingfish]

Thanks I think that’s where I got to at my head with it.