Left Front Tire Pressure Trigger Module Performance: Notes

Fig 1: Left Front Tire Pressure Transponder (Trigger Module) Circuit Schematic

Courtesy of CHRYSLER LLC

For complete wiring diagrams, refer to SYSTEM WIRING DIAGRAMS article.

The Tire Pressure Trigger Module, also known as a transponder, is used to automatically learn the location of each wheel sensor on the vehicle. The module is controlled and activated in sequence by the Wireless Control Module (SKREEM) over a LIN bus. When activated, the module will generate a 125 kHz signal of sufficient field strength to trigger the tire pressure sensor and force a RF transmission from the sensor.

1. When Monitored: 

   When vehicle is driven at vehicle speeds greater than 15 m.p.h.

2. Set Condition: 

   The WCM (SKREEM) will monitor the messages from each Tire Pressure Trigger Module over the LIN bus. If any of the messages are not received, or are received other than as expected, a DTC will set. When the condition is corrected, or is no longer detected, as acknowledged via a LIN bus message, the WCM will reset the appropriate trigger module fault status.