DESCRIPTION
The engine hood courtesy switch is built into the hood lock assembly. This switch turns on when the engine hood is closed and turns off when the engine hood is opened.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
Before replacing the main body ECU (multiplex network body ECU), refer to Registration.
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PROCEDURE
1. | READ VALUE USING TECHSTREAM (HOOD COURTESY SW) |
(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 / Data List.
(e) Read the Data List according to the display on the Techstream.
Body Electrical > Main Body > Data List Tester Display | Measurement Item | Range | Normal Condition | Diagnostic Note |
---|---|---|---|---|
Hood Courtesy SW | Engine hood courtesy switch | ON or OFF | ON: Engine hood open OFF: Engine hood closed | - |
Tester Display |
---|
Hood Courtesy SW |
OK:
The Techstream display changes correctly in response to the engine hood courtesy switch (hood lock assembly) status.
OK | ![]() | REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) |
|
2. | INSPECT ENGINE HOOD COURTESY SWITCH (HOOD LOCK ASSEMBLY) |
(a) Remove the hood lock assembly.
Click here
(b) Inspect the engine hood courtesy switch (hood lock assembly).
Click here
NG | ![]() | REPLACE ENGINE HOOD COURTESY SWITCH (HOOD LOCK ASSEMBLY) |
|
3. | CHECK HARNESS AND CONNECTOR (MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) - ENGINE HOOD COURTESY SWITCH (HOOD LOCK ASSEMBLY) - BODY GROUND) |
(a) Disconnect the J8 main body ECU (multiplex network body ECU) connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection | Condition | Specified Condition |
---|---|---|
J8-11 (HCTY) - A11-1 | Always | Below 1 Ω |
J8-11 (HCTY) or A11-1 - Body ground | Always | 10 kΩ or higher |
A11-2 - Body ground | Always | Below 1 Ω |
OK | ![]() | REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) |
NG | ![]() | REPAIR OR REPLACE HARNESS OR CONNECTOR |
Lexus RX (RX 350L, RX450h) 2016-2025 Owners Manual > Using the driving support
systems: LKA
(Lane-Keeping Assist)
Summary of functions
When driving on highways and freeways with white or yellow lines, this
function
alerts the driver when the vehicle might depart from its lane and provides
assistance
by operating the steering wheel to keep the vehicle in its lane. Furthermore,
the system also provides st ...
Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual > Rear Wiper Rubber: Replacement
REPLACEMENT PROCEDURE 1. REMOVE REAR WIPER BLADE (w/o Rear No. 2 Seat) (a) Turn the engine switch on (IG). (b) Operate the rear wiper and when the rear wiper arm and blade assembly reach the point at which they reverse, turn the engine switch off. (c) Apply protective tape to the rear ...