Renaul Megane Scenic 2004

Hello everyone, I am new here. I would ask for a favor, I have a Renaul Scenic K I have stopped working the heating and I need the workshop manual a greeting

The car is a renaul Megane Scenic 1.9 120CV 6 speeds. The case is K last week I stop working the heating engine and do not see where the engine is hehe above the steering reed. I have changed the module of the speed regulator but nothing remains the number 4

have if you can help me if you ever spent a greeting