Aux / Serpentine belt 2.0 HDi

I'm trying to think what might be wrong with my steering as it's stiff / notchy when the weather is cold so I'm wondering if my aux belt is slipping.

Does anyone have a diagram of the routing & tensioner for the 2.0 aux belt? I somehow doubt it's slipping if the fuel pump also runs off the same belt but can't seem to find any diagrams online. Maybe I'm not looking in the right places.

Thanks