CAUTION
CAUTION: The use of tire sealants is strictly prohib-
ited for vehicles equipped with the Tire Pressure
Monitoring system. Tire sealants can clog tire pres-
sure sensors.
CAUTION: Tire pressure sensor valve stem caps
and cores are specially designed for the sensors.
Due to risk of corrosion, do not use a standard
valve stem cap or core in a tire pressure sensor in
place of the original equipment style sensor cap
and core.
CAUTION: Do not attempt to install a tire pressure
sensor in an aftermarket wheel. Use tire pressure
sensors in original style factory wheels only.
CAUTION: Any time a sensor is to be installed in a
wheel, a new seal and washer must be installed on
the stem to ensure air tight sealing.
NOTE: TPM thresholds have been established for
the original tire size equipped on the vehicle. Use
original size tires only to maintain system accuracy.
DIAGNOSIS AND TESTING - TIRE PRESSURE
SENSOR
NOTE: Tire pressure may increase from 2 to 6 psi
(14 to 41 kPa) during normal driving conditions. Do
NOT reduce this normal pressure build up.
When diagnosing a tire pressure issue, always
check air pressure in the tires first with a known
accurate air gauge. Adjust air pressure as necessary
to that listed on the Tire Inflation Pressure Label
(Placard) provided with the vehicle (usually applied
to the driver’s side B-pillar). After adjusting air pres-
sure in a tire, allow approximately two minutes for
the message or indicator lamp to go out.
Check the tire pressure indicator lamp in the
instrument cluster. If the lamp is illuminating con-
tinuously, proceed as listed below. If the indicator
lamp is flashing on/off three times, once every ten
minutes, there is a system fault detected. Refer to
the appropriate diagnostic information.
If air pressure in any tire is low, inspect all the
tires for leaks. A water “dunk tank” or other water
test may be used to check for a leak around the sen-
sor as long as any water at the valve core is removed
once the procedure is completed. The water can be
easily expelled from the core area by pushing in on
the core for several seconds, allowing escaping air to
drive out any moisture. Reinflate the tire as neces-
sary. Always make sure the original valve stem cap is
securely installed to keep moisture out of the sensor.
If the gauge-read pressure in the tires does not
indicate a tire pressure issue, refer to the appropri-
ate diagnostic information.
REMOVAL
(1) Remove tire and wheel assembly from vehicle.
(Refer to 22 - TIRES/WHEELS - REMOVAL)
CAUTION: The cap used on this valve stem con-
tains an O-ring seal to prevent contamination and
moisture from entering the valve stem. Retain this
valve stem cap for reuse. Do not substitute a regu-
lar valve stem cap in its place.
CAUTION: The valve stem used on this vehicle is
made of aluminum and the core is nickel plated brass.
The original valve stem core must be reinstalled and
not substituted with a valve stem core made of a dif-
ferent material. This is required to prevent corrosion in
the valve stem caused by the different metals.
CS
TIRES/WHEELS
22 - 9
SENSOR - TPM (Continued)