1. Start at the crankshaft pulley.
2. Go around the idler pulley.
3. Go up to the water pump pulley.
4. Go back down to the tensioner pulley.
5. Go around the power steering pump pulley.
6. Go up to the alternator pulley.
7. Finally, go back down to the crankshaft pulley.
Here is a diagram that illustrates the serpentine belt routing:
[Image of serpentine belt routing]