Tire Pressure Monitoring
TIRE PRESSURE MONITORINGDESCRIPTION
This vehicle is equipped with a Tire Pressure Monitoring (TPM) system. It utilizes a warning lamp in the Instrument Cluster to alert the driver when air pressure in any of the vehicle's four tires falls below a predetermined threshold.
The Universal Garage Door Opener/Tire Pressure Monitor module (1) is located in the headliner near the inside rear view mirror (2). The Tire Pressure Monitoring (TPM) system utilizes a control module to control the system. Both the TPM control module, and the Garage Door Opener control module are integrated together.
The Tire Pressure Monitoring System utilizes transmitters that are located in the valve stem (1) of each tire (2) to communicate the tire pressure condition to the module. If a tire has low air pressure, an indicator light on the Instrument Cluster is illuminated. The vehicle operator must check the tire pressure of each tire in order to determine which tire has a low pressure condition.
The TPM warning system utilizes these main components:
^ Tire Pressure Monitoring Module
^ Tire Pressure Sensors/Transmitters
^ Tire Pressure Indicator Lamp
For information on specific components, refer to that individual component.
OPERATION
The Universal Garage Door Opener/Tire Pressure Monitor (TPM) module (1) has a microprocessor controller that can monitor the transmissions from the Tire Pressure Sensors/Transmitters anytime the Ignition is ON.
The TPM module compares the transmitted tire pressure from the Tire Sensors to the predetermined low pressure threshold. If the transmitted value falls below the low pressure threshold, the TPM module will alert the driver.
The following conditions will cause the TPM module to illuminate the "Low Tire" indicator lamp in the Instrument Cluster:
^ If the TPM module determines that the tire pressure being transmitted is below the low pressure threshold, the low tire pressure indicator lamp circuit is grounded and the TPM module turns on the "Low Tire" pressure indicator lamp.
^ Under certain driving conditions, the sensors will go into a "sleep" mode and stop regular transmissions. This interruption in signals will cause the TPM module to turn on the light. The light will be illuminated until the vehicle starts moving at a regular speed again. At that point, the light will go out, and the TPM will resume normal operation.
^ When the TPM module determines there is a fault present, the low tire pressure indicator lamp circuit is grounded and the TPM module turns on the "Low Tire" pressure indicator lamp. A DTC will be stored during this time.
CAUTION
CAUTION: The use of tire sealants is strictly prohibited for vehicles equipped with the Tire Pressure Monitoring system. Tire sealants can clog tire pressure 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.
NOTE: TPM thresholds have been established for the original tire size equipped on the vehicle. Use original size tires only to maintain system accuracy.