peugeot expert 2.0 hdi o4 plate?

fan belt broke on motorway appox 50mph then lost power got off motorway engine management light came on switched engine off checked under bonnet belt broken had also snap bonnet cable which entangle around idler pulley towed home removed old belt etc fit new belt but wont start now plug in fault finder showing no faults will run on easy start only but running rough need timing belt marks to check please