Test B: DTC Always On, Malfunction In Ecu Abs Warning Light Circuit: Notes
WARNING: This page is about a different car, the 2004 Lexus IS 300, 2003 Lexus IS 300, and 2002 Lexus IS 300. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
In some cases the hand-held tester cannot be used when the skid control ECU is abnormal.