For 1990-2009 cars

### Circuit Description

TPMS Receiver Module receives the vehicle speed signal from the transmission control module (TCM) and also receives the information of the tire inflation pressure from the transmitters and the transmitter’s condition. With these information, the TPMS decides that the warning lamp indication is needed or not.

### DTC Descriptor

This diagnostic procedure supports the following DTC:

DTC C0779 Unregistered ID Code

### Conditions for Running the DTC

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

### Conditions for Setting the DTC

• | The TPMS transmitter ID was not registered in the TPMS receiver module.

• | The registration of TPMS transmitter ID was not completed in 5 minutes.

### Action Taken When the DTC Sets

TPMS warning lamp blinks for 75 seconds.

### Conditions for Clearing the DTC

The conditions that set the DTC are no longer present, the DTC can be cleared by scan tool.

Step | Action | Yes | No
--- | --- | --- | ---
Schematic Reference: Tire Pressure Monitoring System Schematics Connector End View Reference: Component Connector End Views
1 | Did you perform the Diagnostic System Check - Vehicle? | Go to Step 2 | Go to Diagnostic System Check - Vehicle
2 | Perform the TPS ID Registration procedure. Is the repair complete? | Go to Step 3 | --
3 |

1. Clear the DTCs with the scan tool.
2. Operate the vehicle within the condition for running and setting the DTC.

Does the DTC reset?

Go to Step 2

System OK