Description And Operation: Notes
Pre-June 7th 2021 Build
Vehicles built prior to June 7th will be equipped with a Tire Pressure Monitoring (TPM) Module.
Post-June 7th 2021 Build
The TPM system for vehicles built after June 7th 2021 is integrated by the Radio Frequency Hub (RF Hub). A "Dummy" TPM module may be installed with the purpose of being a pass-through for the CAN communication lines. The "Dummy" TPM module cannot be communicated with and is not a factor in the Tire Pressure Monitoring. for more information. Refer to MODULE, RADIO FREQUENCY (RF HUB), DESCRIPTION AND OPERATION .
DESCRIPTION
The Tire Pressure Monitoring (TPM) system is made up of the following:
| 1. | Refer to TIRE PRESSURE SENSOR . |
| 2. | Refer to TIRE PRESSURE MONITOR (TPM) . |
| - | Refer to INSTRUMENT PANEL CLUSTER (IPC) . |
OPERATION
Vehicles can be equipped with a Base or a Premium TPM System.
The system monitors the pressure of each tire and warns the driver, when either a low tire pressure conditions or a TPM system malfunctions exists, through the IPC.
The Base TPM system only uses the TPM telltale, which is an audible chime and non-positional text messages to indicate low pressure or system fault conditions.
The Premium TPM system uses the base system TPM telltale audible chime and the vehicle information display to display the actual tire pressure values or dashes for each of the four active road tires in the correct vehicle position. Various text messages, as required, shall also be displayed in the vehicle information display.
This system consists of the following components: one TPM, four or five TPM sensors.
The TPM receives the radio signals from the tire pressure sensors and sends the relevant values to the other modules via Controller Area Network - Chassis (CAN-C). The TPM identifies the sensor position, receives the sensor data, compares the pressure data with the standard pressure values stored in the non-volatile memory, determines whether there is a problem in the tire pressure and stores the warnings regarding tire pressure and system faults. The TPM used the Radio Frequency (RF) Data from the TPM sensor and the wheel speed data to determine the location of each tire pressure sensor. When a sensor is installed in a tire on the vehicle, the TPM can automatically identify the sensor and its location during the first ensuing drive cycle. Identification (ID) will take approximately 20 minutes but the speed of the vehicle must exceed 24 km/h (15 mph). The TPM/RKE ANALYZER 2046300080 can be used to program the new sensor ID number in the TPM. The sensor IDs can also be programmed using a diagnostic scan tool to scan each TPM sensor at each road wheel, and store each sensor ID in the correct location.