POSSIBLE CAUSES
LO TIRE LCD MESSAGE FLASHING
INTERMITTENT DTC
TIRE PRESSURE SENSOR/TRANSMITTER NOT PROGRAMMED
TIRE PRESSURE SENSOR/TRANSMITTER ROAD TEST (ROLL SWITCH FAILURE)
TIRE PRESSURE SENSOR/TRANSMITTER INTERNAL FAULT
TEST ACTION APPLICABILITY
1 NOTE: The true symptom for a sensor failure is a continuously illuminated
LO TIRE LCD message, followed by the determination of either a failed
module or sensor(s).
Turn the ignition on.
Ensure the LO TIRE LCD message proves out. (two seconds)
Ensure the LO TIRE LCD message is ON or OFF.
NOTE: The LO TIRE LCD message must be ON continuously for the result of
this test to be valid.
Is the LO TIRE LCD message ON?
All
Yes → Go To 2
No → The condition is not present at this time. Monitor DRBIIIt
parameters while wiggling the related wire harness. Refer to any
Technical Service Bulletins (TSB) that may apply. Visually in-
spect the related wiring harness and connector terminals.
Perform TIRE PRESSURE MONITORING SYSTEM VERIFICA-
TION TEST.
2 Turn the ignition on.
With the DRBIIIt, read TPM Module DTCs.
Does the DRBIIIt display TIRE PRESSURE SENSOR/TRANSMITTER?
All
Yes → Go To 3
No → Go To 5
3 NOTE: All symptoms are diagnosed using these tests with the exception of
LO TIRE LCD message flashing. The flashing of the LO TIRE LCD message
would indicate either a low or critical tire air pressure condition.
Turn the ignition on.
NOTE: Program the Tire Pressure Sensor/Transmitter reported in the DTC.
With the DRBIIIt, Select MISCELLANEOUS FUNCTION, then Program (LF, RF,
RR or LR) Tire Pressure Sensor/Transmitter.
Place a magnet, special tool 8192, on the valve stem of the affected Tire Pressure
Sensor/Transmitter.
Does the DRBIIIt display that the Tire Pressure Sensor/Transmitter ID was
programmed?
All
Yes → Go To 4
No → Replace and program the Tire Pressure Sensor/Transmitter in
accordance with the Service Information.
Perform TIRE PRESSURE MONITORING SYSTEM VERIFICA-
TION TEST.
373
TIRE PRESSURE MONITORING
LEFT FRONT TIRE PRESSURE SENSOR/TRANSMITTER - TPM —
Continued
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