Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual: IG Power Source Circuit

Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual / Suspension / Steering Column / Power Tilt And Power Telescopic Steering Column System / IG Power Source Circuit

DESCRIPTION

When the engine switch is turned on (IG), the IG power source circuit supplies positive (+) voltage to the multiplex tilt and telescopic ECU.

The multiplex tilt and telescopic ECU also receives engine switch signals via this circuit.

WIRING DIAGRAM

CAUTION / NOTICE / HINT

HINT:

Inspect the fuses for circuits related to this system before performing the following procedure.

PROCEDURE

1.

CHECK HARNESS AND CONNECTOR (MULTIPLEX TILT AND TELESCOPIC ECU - BATTERY)

(a) Disconnect the J25 multiplex tilt and telescopic ECU connector.

*a

Front view of wire harness connector

(to Multiplex Tilt and Telescopic ECU)

(b) Measure the voltage according to the value(s) in the table below.

Standard Voltage:

Tester Connection

Condition

Specified Condition

J25-10 (IG) - Body ground

Engine switch on (IG)

11 to 14 V
NG

REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

2.

CHECK HARNESS AND CONNECTOR (MULTIPLEX TILT AND TELESCOPIC ECU - BODY GROUND)

(a) Disconnect the J25 multiplex tilt and telescopic ECU connector.

*a

Front view of wire harness connector

(to Multiplex Tilt and Telescopic ECU)

(b) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Tester Connection

Condition

Specified Condition

J25-1 (GND) - Body ground

Always

Below 1 Ω

J25-8 (GND2) - Body ground

Always

Below 1 Ω
OK

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR
    How To Proceed With Troubleshooting
    CAUTION / NOTICE / HINT HINT: *: Use the Techstream. PROCEDURE 1. VEHICLE BROUGHT TO WORKSHOP NEXT 2. INSPECT BATTERY VOLTAGE Standard voltage: 11 to 14 V If the vo ...

    Parts Location
    PARTS LOCATION ILLUSTRATION *1 TILT AND TELESCOPIC SWITCH *2 ELECTRIC POWER STEERING COLUMN SUB-ASSEMBLY (TILT STEERING GEAR ASSEMBLY W/ MOTOR) - TELESCOPIC MOTOR - TILT MOTOR *3 COMBI ...

    Other materials:

    Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual > Footwell Light: Installation
    INSTALLATION PROCEDURE 1. INSTALL NO. 1 INTERIOR ILLUMINATION LIGHT ASSEMBLY LH (for Driver Side) (a) Engage the 2 claws to install the No. 1 interior illumination light assembly LH. 2. INSTALL NO. 1 INSTRUMENT PANEL UNDER COVER SUB-ASSEMBLY (for Driver Side) Click here 3. INSTALL COWL SIDE TRIM ...

    Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual > Audio And Visual System (for 8 Inch Display): USB Audio System Recognition/Play Error
    DESCRIPTION When a USB device or "iPod" is connected to the USB jack of the No. 1 stereo jack adapter assembly, it must have playable files. The device must also communicate with and be recognized by the radio receiver assembly. This diagnostic procedure is for when a device is not recognized, or fi ...

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

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

    © 2025 Copyright www.lexusrx.net
    0.0145