P0452 JEEP - Do you have a schematic of where this Pressure Switch is located?

Question

I've been chasing all the EVAP codes from an 08 Wrangler. I have changed most of the system components (due to a violent removal of the underside components). If this switch is located in the engine bay, it was unharmed. I still replaced this switch, but I found mud and sand in the line at the lower connection.
Any suggestion?