DTC CHECK / CLEAR
CHECK FOR DTC (MAIN BODY)
(a) Connect the Techstream to the DLC3.
(b) Turn the engine switch on (IG).
(c) Turn the Techstream on.
(d) Enter the following menus: Body Electrical / Main Body / Trouble Codes.
Body Electrical > Main Body > Trouble Codes(e) Check for DTCs.
CHECK FOR DTC (FRONT RECOGNITION CAMERA (FRONT LIGHTING CONTROL))
(a) Connect the Techstream to the DLC3.
(b) Turn the engine switch on (IG).
(c) Turn the Techstream on.
(d) Enter the following menus: Body Electrical / Front Recognition Camera (Front Lighting Control) / Trouble Codes.
Body Electrical > Front Recognition Camera (Front Lighting Control) > Trouble Codes(e) Check for DTCs.
CLEAR DTC (MAIN BODY)
(a) Connect the Techstream to the DLC3.
(b) Turn the engine switch on (IG).
(c) Turn the Techstream on.
(d) Enter the following menus: Body Electrical / Main Body / Trouble Codes.
Body Electrical > Main Body > Clear DTCs(e) Clear the DTCs.
CLEAR DTC (FRONT RECOGNITION CAMERA (FRONT LIGHTING CONTROL))
(a) Connect the Techstream to the DLC3.
(b) Turn the engine switch on (IG).
(c) Turn the Techstream on.
(d) Enter the following menus: Body Electrical / Front Recognition Camera (Front Lighting Control) / Trouble Codes.
Body Electrical > Front Recognition Camera (Front Lighting Control) > Clear DTCs(e) Clear the DTCs.
Terminals Of Ecu
Data List / Active TestLexus RX (RX 350L, RX450h) 2016-2026 Repair Manual > Lighting System: IG Signal Circuit
DESCRIPTION This circuit detects the engine switch on (IG) or off condition, and sends it to the main body ECU (multiplex network body ECU). WIRING DIAGRAM CAUTION / NOTICE / HINT NOTICE:
Inspect the fuses for circuits related to this system before performing the following procedure.
Before re ...
Lexus RX (RX 350L, RX450h) 2016-2026 Repair Manual > How To Troubleshoot Ecu Controlled Systems: General Information
GENERAL INFORMATION
A large number of ECU controlled systems are used in this vehicle. In general, ECU controlled systems are considered to be very intricate, requiring a high level of technical knowledge to troubleshoot. However, most problem checking procedures only involve inspecting the ECU c ...