Tire Pressure Warning Light Circuit: Notes
WARNING: This page is about a different car, the 2008 Toyota Yaris. However, it is still accessible from the selected car via links, so may be relevant.
DESCRIPTION
If the tire pressure warning ECU detects a disconnected connector or an open circuit between the tire pressure warning ECU and combination meter, the tire pressure warning light turns off 1 second after the ignition switch is turned ON, blinks for 1 minute, and then remains on.