Inspection Procedure
WARNING: This page is about a different car, the 2009 Lexus IS 350 and 2009 Lexus IS 250. However, it is still accessible from the selected car via links, so may be relevant.
HINT:
If there is an open or short in the engine coolant temperature sensor circuit, the ECM will store the DTCs. Perform troubleshooting of the "SFI System". Refer to DIAGNOSTIC TROUBLE CODE CHART (for 2GR-FSE). Refer to DIAGNOSTIC TROUBLE CODE CHART (for 4GR-FSE)).