Leak Detection Pump Switch (3.9L & 5.9L)
WARNING: This page is about a different car, the 2003 Dodge Dakota. However, it is still accessible from the selected car via links, so may be relevant.
For Leak Detection Pump (LDP) switch testing perform the following diagnostic test, perform DTC P1495: LEAK DETECTION PUMP SOLENOID CIRCUIT under DIAGNOSTIC TEST in SELF-DIAGNOSTICS - DAKOTA - 3.9L & 5.9L article.