Sensor - Tpm Description; Operation; Caution; Diagnosis And Testing - Tire Pressure Sensor - Chrysler Concorde 2004 Service Manual

LH
SENSOR - TPM
DESCRIPTION
On vehicles equipped with Tire Pressure Monitor-
ing, one tire pressure sensor is mounted to each
wheel (including spare) (Fig. 19). Each sensor has an
internal battery that lasts up to 10 years. The bat-
tery is not serviceable. At the time of battery failure,
the sensor must be replaced. The serviceable compo-
nents of the tire pressure sensor are:
• Sensor-To-Wheel Grommet
• Valve Stem Cap
• Valve Stem Core
Valve stem caps and cores are specifically designed
for the tire pressure monitoring sensors. Although
similar to standard valve stem caps and cores, they
are different.
CAUTION: Do not use a standard valve stem cap or
core in a tire pressure sensor. Always use the orig-
inal equipment style sensor cap and core.
CAUTION: Do not try to install a tire pressure sen-
sor in a steel wheel or aftermarket wheel. Use only
in original style factory wheels.

OPERATION

Tire pressure sensors are battery operated. They
transmit tire pressure data once every minute at
speeds above 20 mph (32 km/h) or up to once every
hour when stationary (parked). For additional infor-
mation, refer to Appropriate Diagnostic Information.

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 a steel wheel or aftermarket wheel. Use
tire pressure sensors in original style factory
wheels only.
CAUTION: Do not reuse the original Sensor-To-
Wheel Grommet when installing a pressure sensor.
Always use a new grommet and properly torque the
sensor nut to specifications. (Refer to 22 - TIRES/
WHEELS/TIRE PRESSURE MONITORING/SENSOR -
INSTALLATION)
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.
If a fault in the system is detected, always check
air pressure in the tires first with a known accurate
air gauge and correct the inflation pressure as neces-
sary. If any tire is low, inspect all tires.
NOTE: If a tire and wheel rotation is not followed by
the retrain procedure, the system will not properly
inform the driver with the correct vehicle location
for a low or high pressure tire. (Refer to 22 - TIRES/
WHEELS/TIRE PRESSURE MONITORING/SENSOR -
STANDARD PROCEDURE)
If gauge-read pressure in the tires does not reflect
the data on the EVIC, retrain the sensors, then
reevaluate (Refer to 22 - TIRES/WHEELS/TIRE
PRESSURE MONITORING/SENSOR - STANDARD
PROCEDURE). If the gauge-read readings at each
tire still do not reflect the EVIC data, check the accu-
racy of the air gauge (What is the accuracy tolerance
of the gauge being used?). If the gauge used is known
to be accurate and one or more gauge readings still
do not reflect the EVIC readings, but the remaining
gauge readings do, replace the pressure sensor(s) at
the suspect wheels. (Refer to 22 - TIRES/WHEELS/
TIRE PRESSURE
REMOVAL)
Refer to the appropriate diagnostic information for
complete diagnosis of the Tire Pressure Monitoring
System.
STANDARD PROCEDURE - TIRE PRESSURE
SENSOR RETRAIN
WARNING: DEATH OR SERIOUS INJURY CAN
OCCUR IF MAGNETICALLY SENSITIVE DEVICES
ARE EXPOSED TO THE RELEARN MAGNET. MAG-
NETS CAN AFFECT PACEMAKERS.
TIRES/WHEELS 22 - 11
MONITORING/SENSOR -