IQ Windscreen wipers stopped working

[Barry_Baz]

The wipers were fine intermittent and all three speeds. Then yesterday nothing. I've checked the fuse, it's fine. I've inspected the wiring and it looks intact. 

Is there a relay I can tap or change to see if its stuck? 

Does anyone have a wiring diagram or at least know which wires at the motor to test or apply 12v to see if the motor reacts or is broken?

[Mark_P]

Hope this helps

 

Wiper Motor Circuit.pdf

[Barry_Baz]

Hi Mark this is fantastic many thanks.

I have removed the whole scuttle and wiper assembly. Checked the motor all brushes etc okay. Reconnected and it drives but only one way then stops. Does this mean it's the relay? 

Does the relay reverse polarity to drive the motor back or is it within the motor assembly.

Each time I strip the motor and reassemble it drives then stops. So the shaft on the motor does not go both ways, if I'm making any sense.

Really appreciate your help.