Mil Circuit: Notes
WARNING: This page is about a different car, the 2003 Lexus GX 470. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
It is also possible there is an open or short in MIL wire harness or malfunction inside ECM itself which will cause MIL to blink. Diagnose TC terminal circuit in this case. See TC TERMINAL CIRCUIT .