DESCRIPTION
The main body ECU (multiplex network body ECU) controls the outside handle foot lights.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
Before replacing the main body ECU (multiplex network body ECU), refer to Registration.
Click here
PROCEDURE
1. | PERFORM ACTIVE TEST USING TECHSTREAM |
(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 / Active Test.
(e) Perform the Active Test according to the display on the Techstream.
Body Electrical > Main Body > Active Test Tester Display | Measurement Item | Control Range | Diagnostic Note |
---|---|---|---|
Exterior Light | Outside handle foot lights | OFF or ON | - |
Tester Display |
---|
Exterior Light |
OK:
Outside handle foot lights illuminate.
OK | ![]() | PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE |
|
2. | CHECK HARNESS AND CONNECTOR (FRONT DOOR OUTSIDE HANDLE ASSEMBLY LH - MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)) |
(a) Disconnect the N11 front door outside handle assembly LH connector.
(b) Disconnect the P4 rear door outside handle assembly LH connector.
(c) Disconnect the J9 main body ECU (multiplex network body ECU) connector.
(d) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection | Condition | Specified Condition |
---|---|---|
N11-1 (OLP) - J9-4 (MILE) | Always | Below 1 Ω |
P4-1 (OLP) - J9-4 (MILE) | Always | Below 1 Ω |
N11-1 (OLP), P4-1 (OLP) or J9-4 (MILE) - Body ground | Always | 10 kΩ or higher |
OK | ![]() | REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) |
NG | ![]() | REPAIR OR REPLACE HARNESS OR CONNECTOR |
Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual > Horn System: Problem Symptoms Table
PROBLEM SYMPTOMS TABLE HINT: Use the table below to help determine the cause of problem symptoms. If multiple suspected areas are listed, the potential causes of the symptoms are listed in order of probability in the "Suspected Area" column of the table. Check each symptom by checking the suspected ...
Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual > Rear Airbag Sensor(w/o Rear No. 2 Seat): Installation
INSTALLATION CAUTION / NOTICE / HINT HINT:
Use the same procedure for the RH side and LH side.
The following procedure is for the LH side.
PROCEDURE 1. INSTALL REAR AIRBAG SENSOR (a) Check that the engine switch is off. (b) Check that the cable is disconnected from the negative (-) battery t ...