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

Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual / Steering / 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 > Sfi System: Camshaft Position "A" - Timing Over-Advanced or System Performance Bank 1 Mechanical Failure (P001107,P002107)
    DESCRIPTION Refer to DTC P001013. Click here DTC No. Detection Item DTC Detection Condition Trouble Area MIL Memory Note P001107 Camshaft Position "A" - Timing Over-Advanced or System Performance Bank 1 Mechanical Failure 10° CA or greater camshaft timing gear assembly (ban ...

    Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual > Parking Assist Monitor System: CAN Communication Failure (Message Registry) (U1000)
    DESCRIPTION This DTC is stored when the rear television camera assembly judges that it has an internal CAN malfunction. DTC No. Detection Item DTC Detection Condition Trouble Area U1000 CAN Communication Failure (Message Registry) Can communication failure (message registry) Rear ...

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

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

    © 2025 Copyright www.lexusrx.net
    0.0105