Check Mode Procedure

WARNING: This page is about a different car, the 2008 Lexus IS F. However, it is still accessible from the selected car via links, so may be relevant.

CHECK MODE (SIGNAL CHECK): DTC CHECK
1. Turn the engine switch off
2. Connect the Techstream to the DLC3
3. Turn the engine switch on (IG) and turn the Techstream on
4. Enter the following menus. Body Electrical / SRS Airbag / Utility / Signal Check.
5. Select Signal Check, and proceed with checking using the Techstream
  NOTE: Select Signal Check screen displayed on the Techstream to clear the output DTCs (both present and past).
  
  HINT.
  - DTCs can be detected more sensitively in check mode than in normal diagnosis mode.
  - Perform check mode inspection when a malfunction in each squib circuit is suspected even after the normal system code is output through normal diagnosis mode inspection