Lexus RX (RX 350L, RX450h) 2016-2024 Repair Manual: Visual Mute Signal Circuit between Radio Receiver and Multi-display

DESCRIPTION

The radio receiver assembly sends a visual mute signal to the multi-display assembly. As a result, a black screen is displayed when the screen changes so that noise and distorted images are not displayed.

When an open exists in the circuit, noise and distorted images will be displayed instead of a black screen.

When a short exists in the circuit, even though the multi-display assembly is operating normally, noise and distorted images will be displayed (black screen will not be displayed) during screen changes or the black screen will always be displayed.

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

Depending on the parts that are replaced during vehicle inspection or maintenance, performing initialization, registration or calibration may be needed. Refer to Precaution for Navigation System.

Click here

PROCEDURE

1.

INSPECT MULTI-DISPLAY ASSEMBLY

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

Standard Voltage:

Tester Connection

Condition

Specified Condition

J56-11 (VMTI) - Body ground

Engine switch on (ACC)

Screen display changing

3.5 V or higher

→ Below 1 V

→ 3.5 V or higher

*a

Component with harness connected

(Multi-display Assembly)

OK

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

NG

2.

CHECK HARNESS AND CONNECTOR (RADIO RECEIVER ASSEMBLY - MULTI-DISPLAY ASSEMBLY)

(a) Disconnect the J56 multi-display assembly connector.

(b) Disconnect the J151 radio receiver assembly connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

J151-1 (VMTF) - J56-11 (VMTI)

Always

Below 1 Ω

J151-1 (VMTF) or J56-11 (VMTI) - Body ground

Always

10 kΩ or higher

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

OK

3.

REPLACE MULTI-DISPLAY ASSEMBLY

(a) Replace the multi-display assembly with a new or known good one.

Click here

(b) Check that the screen display is normal.

OK:

Screen display is normal.

OK

END

NG

REPLACE RADIO RECEIVER ASSEMBLY

    Radio Receiver Power Source Circuit
    DESCRIPTION This is the power source circuit to operate the radio receiver assembly. WIRING DIAGRAM CAUTION / NOTICE / HINT NOTICE: Inspect the fuses for circuits related to this system before perfor ...

    Remote Touch
    ComponentsCOMPONENTS ILLUSTRATION *1 REAR CONSOLE UPPER PANEL *2 REMOTE OPERATION CONTROLLER ASSEMBLY RemovalREMOVAL PROCEDURE 1. REMOVE REAR CONSOLE UPPER PANEL Click here 2. REMOVE RE ...

    Other materials:

    Lexus RX (RX 350L, RX450h) 2016-2024 Repair Manual > Audio And Visual System (for 12.3 Inch Display): GPS Antenna Connection Malfunction(short) (B15C0,B15C1)
    DESCRIPTION These DTCs are stored when a malfunction occurs in the navigation antenna assembly. DTC No. Detection Item DTC Detection Condition Trouble Area B15C0 GPS Antenna Connection Malfunction(short) Navigation antenna assembly error Navigation antenna assembly Antenna co ...

    Lexus RX (RX 350L, RX450h) 2016-2024 Repair Manual > Wireless Door Lock Control System: Terminals Of Ecu
    TERMINALS OF ECU CHECK INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY AND MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) (a) Remove the main body ECU (multiplex network body ECU) from the instrument panel junction block assembly. (b) Reconnect the instrument panel junction block assembly connector. (c) Measu ...

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

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

    © 2024 Copyright www.lexusrx.net
    0.017