ABS Warning Light Circuit: Description
WARNING: This page is about a different car, the 2007 Lexus SC 430. However, it is still accessible from the selected car via links, so may be relevant.
If the ECU detects trouble, it illuminates the ABS warning light and prohibits ABS control. At this time, the ECU records a DTC in memory.
Connecting terminals TC and CG of the DLC3 blinks the ABS warning light and outputs the DTC.