Toyota Avalon (XX50) 2019-2022 Service & Repair Manual: Sound Signal Circuit between Radio Receiver and Stereo Jack Adapter

Toyota Avalon (XX50) 2019-2022 Service & Repair Manual / Audio, Visual, Telematics / Navigation / Multi Info Display / Navigation System(for Gasoline Model) / Sound Signal Circuit between Radio Receiver and Stereo Jack Adapter

DESCRIPTION

The stereo jack adapter assembly sends the sound signal from an external device to the radio and display receiver assembly via this circuit.

WIRING DIAGRAM

PROCEDURE

1.

CHECK HARNESS AND CONNECTOR (RADIO AND DISPLAY RECEIVER ASSEMBLY - STEREO JACK ADAPTER ASSEMBLY)

(a) Disconnect the G3 radio and display receiver assembly connector.

(b) Disconnect the G5 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

G3-14 (ADPG) - G5-5 (ADPG)

Always

Below 1 Ω

G3-10 (AGND) - G5-6 (AGND)

Always

Below 1 Ω

G3-12 (VAR+) - G5-2 (VAR+)

Always

Below 1 Ω

G3-11 (VAL+) - G5-3 (VAL+)

Always

Below 1 Ω

G3-13 (VA-) - G5-4 (VA-)

Always

Below 1 Ω

G3-14 (ADPG) or G5-5 (ADPG) - Body ground

Always

10 kΩ or higher

G3-10 (AGND) or G5-6 (AGND) - Body ground

Always

10 kΩ or higher

G3-12 (VAR+) or G5-2 (VAR+) - Body ground

Always

10 kΩ or higher

G3-11 (VAL+) or G5-3 (VAL+) - Body ground

Always

10 kΩ or higher

G3-13 (VA-) or G5-4 (VA-) - Body ground

Always

10 kΩ or higher

*a

Front view of wire harness connector

(to Radio and Display Receiver Assembly)

*b

Front view of wire harness connector

(to Stereo Jack Adapter Assembly)
OK

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR
    Sound Signal Circuit between Radio Receiver and Stereo Component Amplifier

    Speaker Circuit

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