Test B: DTC Always On, Malfunction In Ecu: Notes
WARNING: This page is about a different car, the 2002 Lexus LX 470 and 2001 Lexus LX 470. 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.