Grand Caravan V6-3.8L (2009)
Tire Pressure Monitor Receiver / Transponder: Description and Operation
Tire Pressure Monitoring (TPM) Transponder - Description
DESCRIPTION
A transponder, sometimes referred to as a trigger module, is located in three of the four wheel wells (behind the wheelhouse splash shields) of a vehicle
equipped with Premium TPM. These transponders are used to provide the Wireless Ignition Node (WIN) with the location of the tire pressure sensors on
the vehicle. A fourth transponder is not necessary in the remaining wheel well due to the process-of-elimination theory. Once the system knows the
location of the first three sensors it assumes the location of the fourth tire pressure sensor. On this vehicle, there is a transponder located in the left front,
left rear, and right front wheelhouse. There is not a transponder located in the right rear wheelhouse.
