Aux water pump wiring

[It's not a Scirocco 10]

My vr hasn't had a working aux pump since I've owned it. It was deleted for a little while when the pump died. When I decided to replace it, I'm not entirely sure my local "vw specialist" had got it working. It certainly wasn't in the correct position. It was plumbed in to the right pipes but laying down unsupported.

It ended up that the wiring got damaged.

Now I have asked numerous different people who have worked on my car to have a look and try and fix it but unfortunately none have.

My pump is going to need replacing again. So I'm looking to try and figure out getting power to it myself.

 

So my understanding is.

With the ignition on there should be 12v to the pump.

This is fed via the fan controller black with red stripe wire from wp pin?

I have traced this wire down to the main multi pin plug but there is not one of the same colour on the other side. I tested the voltage & was getting 7v but with the cable cut the voltage was coming from the engine side not fan controller.

 

If I bridge the pins on the yellow temp sender I don't get any reaction from the fans. Does the car need to be a certain temperature for this?

 

Does the earth wire just go an earth mount on the block?

 

I have another fan controller on the way. The one I have now is getting the 12v feed on the yellow & black wire.

 

Thank you for taking your time to read this any help will be greatly received

 

Regards

Chris

[eugopnosaj 0]

I've also got a problem with my fans not coming on so I've been doing some investigating, looking at the diagram there should be 12v 'hot on' on the black/yellow chaser wire which is pin 4 on the large plug in the controller.

 

The cables from the fan controller to the pump are correct; black/red chaser pin 1 to connector; red/black chaser to pump. Brown to each on head or block.

 

Bridging the sender the fans should come on, which connections did you bridge? I believe it should be brown/black chaser and brown on the yellow plug?

[It's not a Scirocco 10]

I bridged the yellow temp sender as per the Bentley diagram.

Any ideas what values I should be seeing on the pins of the connector for yellow sender

My red black to pump must have come out from the connector.

Any idea what pin this should be from the connector? Although I should be able to bypass the connector to test it.

[It's not a Scirocco 10]

My fans will work if I bridge the terminals on the rad sensor. Have you tried this with yours?

[eugopnosaj 0]

My fans will work if I bridge the terminals on the rad sensor. Have you tried this with yours?

 

I haven't no, its on my to do list when I get home from work though.

 

Which connector do you mean? The wiring from the control module is pin # 1 (8 pin plug), I couldn't tell you the values of the senders in order to check if they're ok unfortunately, you could test it in hot water if you took it out and see whether it switched over at the right temperature (I've tested senders this way using a meat thermometer in the water and heated water on the hob).

[It's not a Scirocco 10]

Check out the ultimate cooling guide for which wires to bridge on the rad plug to check the different speeds of the fans.

[swiftkid 1]

Sensor in rad is stages 1 & 2, black 2 pin in thermostat housing is stage 3

 

Sent from my SM-G900F using Tapatalk

[It's not a Scirocco 10]

I have now got a different fan controller and have now got the after run working on the fan when I bridge the yellow sensor.

Now I need to sort wiring for the aux pump. Can anyone tell me what pin from the main engine 42 pin connection the +ve red black wire comes from?

I've tried to chop the black red and bypass the 42pin but it made the engine run rough.