Test B: Input Signal Check (Test Mode Check): Notes
WARNING: This page is about a different car, the 2003 Lexus LS 430, 2002 Lexus LS 430, and 2001 Lexus LS 430. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
This test checks that signals from steering sensor, stop light switch, etc. are being input normally to the ECU. Individual checking of each signal can be performed. See Figure.