Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Description And Operation
DESCRIPTION
The Trailer Tire Pressure Monitoring (TTPM) system is comprised of several different components. Those components are:
| 1. | Refer to UCONNECT™ RADIO DISPLAY . |
| 2. | Refer to TRAILER INTERFACE CONTROL MODULE (TIM) . |
| 3. | Refer to TRAILER TIRE PRESSURE MONITOR (TTPM) MODULE . |
| 4. | Refer to INSTRUMENT PANEL CLUSTER (IPC) . |
| - | Refer to BODY CONTROL MODULE (BCM) . |
| - | Refer to TIRE PRESSURE SENSOR . |
The TTPM system monitors the pressure of each trailer tire and warns the driver through the IPC when either a low tire pressure condition exists or a TTPM sensor or system malfunction condition exists. The IPC will display the actual tire pressure values when the system is operating properly or dashes if not operating properly, for each of the trailer tires in the correct position on the trailer. Various text messages, as required, will also be displayed in the IPC. All trailer configuration settings can be performed in the radio through customer selectable settings.
The TTPM system can store up to four trailer profiles, each consisting of up to three axles and 12 tires per trailer. This allows a maximum of up to 48 sensor Identifications (IDs) to be managed by the system.
The TTPM stores up to 48 TPM sensor IDs, four separate trailer settings, consisting of up to a maximum of three axles and 12 tires per trailer.
OPERATION
The TTPM receives tire pressure, temperature, battery status and TPM sensor ID data via Radio Frequency (RF) data transmitted from the TTPM sensors located inside the trailer wheels. The TTPM module stores all customer selected tire pressure setting values, calculated low pressure threshold values and low pressure threshold hysteresis pressure values in memory that can be accessed through diagnostic communication. The TTPM sends the information to the TIM via the Controller Area Network-Chassis (CAN-C) to be transmitted to the IPC.
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.