Diagnostic Instructions
| • | Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure. |
| • | Review Strategy Based Diagnosis for an overview of the diagnostic approach. |
| • | Diagnostic Procedure Instructions provides an overview of each diagnostic category. |
DTC Descriptor
DTC C2171: Low Tire Pressure Sensors Not Learned -- MainCircuit/System Description
The tire pressure monitor (TPM) system has a radio frequency (RF) transmitting pressure sensor in each wheel/tire assembly. The module receives and translates the data contained in the tire pressure sensor RF transmissions into sensor presence, sensor mode, and tire pressure.
The receiver module receives a radio frequency (RF) transmission from each tire pressure sensor. Each sensor RF transmission contains its own unique identification (ID) code that must be learned into the module memory. Once all 4 IDs have been learned, the module continuously compares IDs received in transmission to its learned IDs to determine if all 4 sensors are present.
Conditions for Running the DTC
The ignition is ON.
Conditions for Setting the DTC
Tire Pressure Sensor ID code is not learned.
Action Taken When the DTC Sets
The Tire Pressure Warning Light is illuminated.
Conditions for Clearing the DTC
A current DTC will clear when the Tire Pressure Control Module has undergone the sensor learn procedure.
Reference Information
Description and Operation
Tire Pressure Monitor Description and Operation
Schematic Reference
Tire Pressure Monitoring System Schematics
Connector End View Reference
Electrical Information Reference
| • | Circuit Testing |
| • | Wiring Repairs |
Scan Tool Reference
Control Module References for Scan Tool Information
Circuit/System Verification
Verify that the Sensor ID's are learned.
| ⇒ | If the ID's are not learned, program/setup the Tire Pressure Control Module. If the DTC resets, replace the Tire Pressure Control Module. |
Repair Instructions
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
| • | Control Module References for Module replacement, setup, and programming |
