Lexus RX (RX 350L, RX450h) 2016-2023 Repair Manual: Sound Signal Circuit between Radio Receiver and Stereo Component Amplifier

DESCRIPTION

The radio receiver assembly sends a sound signal to the stereo component amplifier 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 or speakers.

WIRING DIAGRAM

PROCEDURE

1.

CHECK HARNESS AND CONNECTOR (RADIO RECEIVER ASSEMBLY - STEREO COMPONENT AMPLIFIER ASSEMBLY)

(a) Disconnect the J150 radio receiver assembly connector.

(b) Disconnect the J156 stereo component amplifier assembly connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

J150-1 (FR+) - J156-5 (R+)

Always

Below 1 Ω

J150-6 (FR-) - J156-4 (R-)

Always

Below 1 Ω

J150-2 (FL+) - J156-3 (L+)

Always

Below 1 Ω

J150-7 (FL-) - J156-2 (L-)

Always

Below 1 Ω

J156-6 (SLD) - Body ground

Always

10 kΩ or higher

J150-1 (FR+) or J156-5 (R+) - Body ground

Always

10 kΩ or higher

J150-6 (FR-) or J156-4 (R-) - Body ground

Always

10 kΩ or higher

J150-2 (FL+) or J156-3 (L+) - Body ground

Always

10 kΩ or higher

J150-7 (FL-) or J156-2 (L-) - Body ground

Always

10 kΩ or higher

OK

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

NG

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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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