For 1990-2009 cars

### 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 C0558: Tire Pressure Sensor IDs Not Learned

### Circuit/System Description

If the tire pressure sensor learn mode has not been completed, the tire pressure monitor indicator icon on the instrument panel cluster (IPC) will flash for 1 minute and then remain illuminated after the ignition switch is cycled ON and the IPC bulb check is complete. Under these circumstances, DTC C0558 will be set.

### Conditions for Running the DTC

The ignition ON.

### Conditions for Setting the DTC

The tire pressure monitor receiver has not completed the tire pressure sensor learn process.

### Action Taken When the DTC Sets

The tire pressure monitor indicator icon on the instrument panel cluster (IPC) will flash for 1 minute and then remain illuminated after the ignition switch is cycled ON and the IPC bulb check is complete.

### Conditions for Clearing the DTC

A current DTC will clear when the tire pressure indicator receiver has undergone the tire pressure sensor learn process and 1 ignition cycle has occurred.

### Diagnostic Aids

A newly replaced tire pressure indicator receiver does not set DTC C0558 on its initial ignition ON cycle. The vehicle will need to be driven above 32 km/h (20 mph) for over 10 minutes so that the tire pressure sensor learn process can be completed for the system to function correctly.

### Reference Information

#### Description and Operation

Tire Pressure Monitor Description and Operation

#### Electrical Information Reference

• | Circuit Testing

• | Connector Repairs

• | Testing for Intermittent Conditions and Poor Connections

• | Wiring Repairs

#### Scan Tool Reference

Control Module References for scan tool information

### Circuit/System Verification

Verify that the DTC C0558 is not set.

⇒ | If the DTC is set, perform the Tire Pressure Sensor Learn procedure. Verify the scan tool Learn Status data parameter changes from In Progress to Completed. If the Learn Status does not change or the DTC resets, with a scan tool, perform the Reset ECU and replace the tire pressure indicator receiver.

### Repair Instructions

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

• | Tire Pressure Sensor Learn

• | Control Module References for tire pressure indicator receiver replacement, setup, and programming