Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual: Outside Handle Foot Light Circuit

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

-

Body Electrical > Main Body > Active Test

Tester Display

Exterior Light

OK:

Outside handle foot lights illuminate.

OK

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

NG

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

    Hazard Warning Switch Circuit
    DESCRIPTION The combination meter assembly receives the hazard warning signal switch on signal and controls the operation of the hazard warning lights. WIRING DIAGRAM CAUTION / NOTICE / HINT NOTICE: ...

    Taillight Relay Circuit
    DESCRIPTION The main body ECU (multiplex network body ECU) controls the operation of the TAIL relay. WIRING DIAGRAM CAUTION / NOTICE / HINT NOTICE: Inspect the fuses for circuits related to this s ...

    Other materials:

    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 ...

    Lexus RX (RX 350L, RX450h) 2016-{YEAR} Owners Manual

    Lexus RX (RX 350L, RX450h) 2016-{YEAR} Repair Manual

    © 2025 Copyright www.lexusrx.net
    0.0138