Symptom Chart

WARNING: This page is about a different car, the 2007 Ford Ranger. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: For vehicles with different front and rear tire pressures (such as E-Series and certain F-Series), the tire pressure sensors must be trained following a tire rotation. Failure to train the sensors will cause the tire pressure monitoring system (TPMS) indicator to illuminate.

For vehicles with the same tire pressures for front and rear tires, tire rotation will not affect the system.

Failure of a TPMS component may not cause the message center to display a fault message or a DTC to be stored. The Symptom Chart is a starting point to begin diagnosis of these concerns.

Symptom Chart

Condition	Possible Sources	Action
Tire pressure monitoring system (TPMS) indicator ON continuously and message center (if equipped) displays LOW TIRE PRESSURE	Spare tire currently in use	INSTALL the repaired road wheel/tire in place of the spare tire.
	Air pressure not set to specifications listed on the vehicle certification label	Go to Pinpoint Test E .
Smart junction box (SJB) will not enter sensor training mode	Brake on/off (BOO) switch Ignition switch Vehicle communication bus ABS module SJB	Go to Pinpoint Test F .
TPMS indicator FLASHES for 70 seconds and then remains ON solid when the ignition key is turned to the ON position and DTC B287A or B2872 is present	TPMS sensor(s) TPMS sensor(s) not trained to the SJB SJB	NOTE: If the vehicle has been stationary for more than 30 minutes, the sensors will go into a "sleep mode" to conserve battery power. It will be necessary to wake them up so they will transmit the latest tire pressure information to the SJB. ACTIVATE the TPMS sensors. REFER to Tire Pressure Monitoring System (TPMS) Sensor Activation in this article. Go to Pinpoint Test G .
TPMS indicator FLASHES for 70 seconds and then remains ON solid when the ignition key is turned to the ON position, the message center (if equipped) displays TIRE MONITOR FAULT and DTC B1342 is present	SJB	INSTALL a new SJB. REFER to MULTIFUNCTION ELECTRONIC MODULES article.
TPMS indicator FLASHES for 70 seconds and then remains ON solid when the ignition key is turned to the ON position, the message center (if equipped) displays TIRE MONITOR FAULT and there are no DTCs present in the SJB	Vehicle communication bus SJB Vehicle communication issue between SJB and instrument cluster	REFER to MODULE COMMUNICATIONS NETWORK article to diagnose the controller area network (CAN) bus.
One or more sensors will not train	Tire pressure sensor(s) Vehicle communication bus SJB	RETRIEVE and RECORD DTCs. REFER to the Tire Pressure Monitoring System (TPMS) DTC Chart.