Test E: TPMS Indicator ON Solid When The Ignition Key is Turned to The ON Position and Message Center (if equipped) Displays LO
Pinpoint Test E: TPMS Indicator ON Solid When the Ignition Key is Turned to the ON Position and Message Center (if equipped) Displays LOW TIRE PRESSURENormal Operation
The tire pressure monitoring system (TPMS) monitors the air pressure of all 4 road tires. The wheel-mounted tire pressure sensors transmit via radio frequency signals, to the driver door module (DDM). TPMS functionality is integral to the DDM. These transmissions are sent approximately every 60 seconds when the vehicle speed exceeds 32 km/h (20 mph). The TPMS function (integral to the DDM) compares each tire pressure sensor transmission against a low-pressure limit. If it has been determined that the tire pressure has fallen below this limit, the DDM communicates this on the vehicle communication bus to the instrument cluster. The instrument cluster then illuminates the TPMS indicator and displays the appropriate message(s) in the message center (if equipped).
This pinpoint test is intended to diagnose the following:
^ Low air pressure in tire(s)
^ Tire pressure sensor(s)
