Pinpoint Test 3: TPMS Indicator Flashes When the Ignition Key Is Turned to the on Position and DTC B2872 Is Present
PINPOINT TEST 3: TPMS INDICATOR FLASHES WHEN THE IGNITION KEY IS TURNED TO THE ON POSITION AND DTC B2872 IS PRESENTNormal Operation
If there is a fault in the tire pressure monitoring system (TPMS), such as a damaged or missing sensor(s), damaged module or a communication issue within the vehicle, DTCs are set in the smart junction box (SJB), the TPMS warning indicator will flash for 70 seconds and then remain ON solid when the ignition switch is turned to the ON position and the message center (if equipped) will display TIRE PRESSURE SENSOR FAULT. If the SJB does not get a response from all 4 TPMS sensors, DTC B287A may be set and the message center (if equipped) will display TIRE PRESSURE MONITOR FAULT.
This pinpoint test is intended to diagnose the following:
^ TPMS sensor(s) missing
^ TPMS sensor(s) not trained to the vehicle
^ TPMS sensor(s) swapped due to wheel swap
^ TPMS sensor(s) damaged
^ Vehicle communication issue
^ SJB
Note:
^ If a warranty case is opened for an actual TPMS fault, document and include the actual tire pressure data in all warranty communications.
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