Circuit Description
WARNING: This page is about a different car, the 2004 Lexus ES 330. However, it is still accessible from the selected car via links, so may be relevant.
the DLC3 circuit enables reading of the Diagnostic Trouble Code (DTC) when making short circuit between terminals TC and CG of the DLC3.
The DTCs are displayed when the CRUISE MAIN indicator light on the combination meter blinks.