Tribute 4WD L4-2.3L Hybrid (2008)
Tire Pressure Module: Description and Operation
TPMS SYSTEM MODULE
The smart junction box (SJB) contains the tire pressure monitoring system (TPMS) functionality. The 2 systems have separate diagnosis and testing but
they are serviced as one module.
The SJB compares the information of each tire pressure sensor transaxle against a pressure limit. If the SJB determines that the tire pressure has fallen
below the low limit (the pressure listed on the vehicle certification label minus 25 percent), the SJB communicates this to the instrument cluster on the
vehicle communication bus.
