Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual: On-vehicle Inspection

Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual / Vehicle Exterior / Lighting (ext) / Automatic Light Control Sensor / On-vehicle Inspection

ON-VEHICLE INSPECTION

PROCEDURE

1. INSPECT AUTOMATIC LIGHT CONTROL SENSOR

(a) Disconnect the K3 automatic light control sensor connector.

*a

Front view of wire harness connector

(to Automatic Light Control Sensor)

(b) Measure the voltage and resistance on the wire harness side connector according to the value(s) in the table below.

Standard Voltage:

Tester Connection

Condition

Specified Condition

K3-1 (CLTB) - K3-2 (CLTE)

Engine switch off

Below 1 V

Engine switch on (IG)

11 to 14 V

Standard Resistance:

Tester Connection

Condition

Specified Condition

K3-2 (CLTE) - Body ground

Always

Below 1 Ω

If the result is not as specified, there may be a malfunction on the wire harness side.

(c) Reconnect the K3 automatic light control sensor connector.

*a

Component with harness connected

(Automatic Light Control Sensor)

(d) Connect an oscilloscope to the automatic light control sensor connector.

(e) Check the waveform.

OK:

Tester Connection

Tool Setting

Condition

Specified Condition

K3-4 (CLTS) - K3-2 (CLTE)

2 V/DIV., 10 ms./DIV.

Engine switch on (IG), light control switch in AUTO position

Correct waveform is as shown

HINT:

The communication waveform changes according to the surrounding brightness.

If the result is not as specified, the automatic light control sensor may be malfunctioning.
    Components
    COMPONENTS ILLUSTRATION *1 AUTOMATIC LIGHT CONTROL SENSOR - - ...

    Removal
    REMOVAL CAUTION / NOTICE / HINT The necessary procedures (adjustment, calibration, initialization or registration) that must be performed after parts are removed and installed, or replaced during auto ...

    Other materials:

    Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual > Lighting (int): Front Door Courtesy Switch
    ComponentsCOMPONENTS ILLUSTRATION *1 FRONT DOOR COURTESY LIGHT SWITCH ASSEMBLY - - N*m (kgf*cm, ft.*lbf): Specified torque - - RemovalREMOVAL CAUTION / NOTICE / HINT HINT: Use the same procedure for the RH side and LH side. The following procedure is for the LH side. ...

    Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual > Power Back Door System (w/ Outside Door Control Switch): Back Door Motor Circuit (B2220)
    DESCRIPTION This DTC is stored when the multiplex network door ECU detects a malfunction of the motor built-into the power back door unit assembly set LH or power back door unit assembly set RH. DTC No. Detection Item DTC Detection Condition Trouble Area B2220 Back Door Motor Circuit ...

    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