On vehicles equipped with the premium TPM system, the Wireless Control
Module (WCM), commonly referred to as the Sentry Key Remote Entry Module
(SKREEM), uses transponders (trigger modules) located in three of the four
wheel wells on the vehicle to provide it with the location of the tire pressure
sensors on the vehicle. Like the base system, the WCM receives RF signals from
all four rotating wheel speed sensors. When the WCM needs to know which
sensor is located at a particular location on the vehicle, it directs the transponder
at that location to send out a low frequency signal to excite the nearby sensor.
The WCM then receives that excited signal and knows where that sensor is
located. This auto-locating process only happens in the first 10 minutes of any
WCM cycle while traveling at speeds above 20 mph (32 km/h) (The auto-
locating process will start again only if the vehicle has been shut off for
approximately 20 minutes or longer). Once the WCM has performed this to the
three locations that have transponders, it uses the process-of-elimination theory
to figure out the location of the fourth sensor ID.
REMOVAL
FRONT
1. Remove the wheelhouse splash shield at the transponder requiring service.
Refer to
SHIELD, SPLASH, FRONT WHEELHOUSE, REMOVAL
.
Fig. 24: Left Front Tpm Transponder
Courtesy of CHRYSLER GROUP, LLC
2. Disconnect the wiring harness connector (2) at the transponder (1).
2014 Jeep Patriot Limited
2014 SUSPENSION Tires & Wheels - Service Information - Compass & Patriot
Tuesday, July 19, 2016 10:01:58 AM
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