Lexus RX (RX 350L, RX450h) 2016-2024 Repair Manual: Sound Signal Circuit between Radio Receiver and Stereo Jack Adapter

DESCRIPTION

The No. 1 stereo jack adapter assembly sends the sound signal from an external device to the radio receiver assembly via this circuit.

The sound signal that has been sent is amplified by the stereo component amplifier assembly and then is sent to the speakers. If there is an open or short in the circuit, sound cannot be heard from the speakers even if there is no malfunction in the stereo component amplifier assembly, radio receiver assembly or speakers.

WIRING DIAGRAM

PROCEDURE

1.

CHECK HARNESS AND CONNECTOR (RADIO RECEIVER ASSEMBLY - NO. 1 STEREO JACK ADAPTER ASSEMBLY)

(a) Disconnect the J148 radio receiver assembly connector.

(b) Disconnect the J152 No. 1 stereo jack adapter assembly connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

J148-14 (ADPG) - J152-2 (ADPG)

Always

Below 1 Ω

J148-10 (AGND) - J152-7 (AGND)

Always

Below 1 Ω

J148-12 (VAR+) - J152-6 (VAR+)

Always

Below 1 Ω

J148-11 (VAL+) - J152-1 (VAL+)

Always

Below 1 Ω

J148-13 (VA-) - J152-5 (VA-)

Always

Below 1 Ω

J148-14 (ADPG) or J152-2 (ADPG) - Body ground

Always

10 kΩ or higher

J148-10 (AGND) or J152-7 (AGND) - Body ground

Always

10 kΩ or higher

J148-12 (VAR+) or J152-6 (VAR+) - Body ground

Always

10 kΩ or higher

J148-11 (VAL+) or J152-1 (VAL+) - Body ground

Always

10 kΩ or higher

J148-13 (VA-) or J152-5 (VA-) - Body ground

Always

10 kΩ or higher

OK

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

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    Speaker Circuit
    DESCRIPTION If there is a short in a speaker circuit, the stereo component amplifier assembly detects it and stops output to the speakers. Thus sound cannot be heard from the speakers even if there is ...

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

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

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