C0551

DTC C0551

Diagnostic Instructions

* Perform the Diagnostic System Check - Vehicle (Diagnostic System Check - Vehicle) prior to using the diagnostic procedure.
* Review Strategy Based Diagnosis (Strategy Based Diagnosis) for an overview of the diagnostic approach.
* Diagnostic Procedure Instructions (Diagnostic Procedure Instructions) provides an overview of each diagnostic category.

DTC Descriptors
DTC C0551
- TPMS Receiver Module Internal Fault

Circuit/System Description

The tire pressure monitor (TPM) system has a radio frequency (RF) transmitting pressure sensor in each wheel/tire assembly. As vehicle speed increases, centrifugal force closes the sensors internal roll switch, which puts the sensor into Drive mode. The tire pressure module receives and translates the data contained in the tire pressure sensor RF transmissions into sensor presence, sensor mode, and tire pressure. The tire pressure module receives vehicle speed information from the transmission control module (TCM). Once a vehicle speed signal of greater than 32km/h (20 mph) is received, the tire pressure module waits for the sensors to go into Drive mode. If the tire pressure is below or above the predetermined threshold specification or if there is a malfunction in the tire pressure monitor system, the tire pressure module will illuminate the low tire pressure indicator icon on the instrument panel cluster (IPC).

Conditions for Running the DTC

Vehicle speed is above 32 km/h (20 mph).

Conditions for Setting the DTC

There is a failure internally within the tire pressure module.

Action Taken When the DTC Sets

The instrument panel cluster (IPC) tire pressure indicator warning lamp icon flashes for 75 seconds.

Conditions for Clearing the DTC

* The conditions for setting the DTC are no longer present.
* The DTC can be cleared with the scan tool.

Reference Information
Schematic Reference

Tire Pressure Monitoring System Schematics ([1][2]Electrical Diagrams)
Connector End View Reference

Component Connector End Views (Connector Views)
Electrical Information Reference

* Circuit Testing (Circuit Testing)
* Connector Repairs (Connector Repairs)
* Testing for Intermittent Conditions and Poor Connections (Testing for Intermittent Conditions and Poor Connections)
* Wiring Repairs (Wiring Repairs)

Scan Tool Reference

Tire Pressure Indicator Receiver Scan Tool Information (Scan Tool Testing and Procedures)
Special Tools

J-46079 Tire Pressure Monitor Diagnostic Tool

Circuit/System Verification

Verify that DTC C0551 is not set.

If the DTC is set, replace the tire pressure module.

Repair Instructions

Perform the Diagnostic Repair Verification (Verification Tests) after completing the diagnostic procedure.

Control Module References (Programming and Relearning) for tire pressure module replacement, programming, and setup.