Wipers not working

[joe_m]

Evening. 
having an argument with my wipers. They’ve stopped working. I can hear the relay clicking as I engage the stalk, I have voltage at the plug that goes into the motor, but the wipers aren’t moving! I have 2 different wiper motors here and neither work! 

any suggestions hugely appreciated as I can’t drive in the rain with no wipers anymore 

2004 mk1 superb, 1.9tdi awx. 330k miles. Besides this, everything else is working as it should be! 
thanks

 

[Breezy_Pete]

The relay contacts may be burnt such that they make a contact, but not one that's good enough for the current required to get the motor moving.

Try another relay, especially if it's an easy pluggable type.

 

[Warrior193]

I'm taking a bit of guess here as I have not seen a wiring diagram for your vehicle - but I think there should probably be two 12 V connections on the motor - 1 permanent and one switchable (live when the stalk is operated) As Pete says, check the relay.   

[joe_m]

Thank you. I’ve located the relay and it appears to be clean inside with no evidence of any burning. Though it makes sense to be the relay at fault. I have 4 terminals in the plug to the wipers and only one is giving voltage. I assume 2 are for the varying speeds? I’m going to see if I can rob the relay from my dads car and see if it works

[Breezy_Pete]

Can be difficult to view the actual contact surfaces of the relay without bending bits to get a better view, and that's not in the category of 'non-destructive'.

 

Judging by the circuit diagram, the black/grey wire is the low speed power feed, green/yellow is high speed, and brown is earth return. The green/purple is park position feedback I think.

 

[joe_m]

2 hours ago, Breezy_Pete said:

Can be difficult to view the actual contact surfaces of the relay without bending bits to get a better view, and that's not in the category of 'non-destructive'.

 

Judging by the circuit diagram, the black/grey wire is the low speed power feed, green/yellow is high speed, and brown is earth return. The green/purple is park position feedback I think.

 

Thanks Pete, 

just been a stolen dads relay so I’ll try that in the morning. I’m not trying to do it in the dark with a torch. 
im struggling with the Haynes wiring diagram as there isn’t one! So I’m using a Passat wiring diagram as the closest I can find so your colours are very helpful! The only pin I was getting a constant 11.9v with the engine off was with the neg in pin 1 and pos in pin 2 at the wiper motor. 
cheers!