Tire Pressure Warning Light Circuit: Description
WARNING: This page is about a different car, the 2007 Toyota RAV4. However, it is still accessible from the selected car via links, so may be relevant.
If the tire pressure warning ECU detects trouble, the tire pressure warning light turns on and tire pressure monitor is canceled at the same time. At this time, the ECU records a DTC in memory.
Connect terminals TC and CG of the DLC3 to make the tire pressure warning light blink and output the DTC.