Toyota Avalon Service & Repair Manual: Sound Signal Circuit between Radio Receiver and Stereo Component Amplifier

Toyota Avalon Service & Repair Manual / Audio, Visual, Telematics / Navigation / Multi Info Display / Navigation System(for Gasoline Model) / Sound Signal Circuit between Radio Receiver and Stereo Component Amplifier

DESCRIPTION

The radio and display receiver assembly sends a sound signal to the stereo component amplifier assembly via this circuit.

The sound signal that is sent is amplified by the stereo component amplifier assembly, and then is sent to the speakers.

If there is an open or short in this circuit, sound cannot be heard from the speakers even if the stereo component amplifier assembly or speakers are not malfunctioning.

WIRING DIAGRAM

PROCEDURE

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

(a) Disconnect the G14 radio and display receiver assembly connector.

(b) Disconnect the G8 stereo component amplifier assembly connector.

Standard Resistance:

Tester Connection	Condition	Specified Condition
G8-5 (R+) - G14-1 (FR+)	Always	Below 1 Ω
G8-4 (R-) - G14-6 (FR-)	Always	Below 1 Ω
G8-3 (L+) - G14-2 (FL+)	Always	Below 1 Ω
G8-2 (L-) - G14-7 (FL-)	Always	Below 1 Ω
G8-6 (SLD) - Body ground	Always	10 kΩ or higher
G8-5 (R+) or G14-1 (FR+) - Body ground	Always	10 kΩ or higher
G8-4 (R-) or G14-6 (FR-) - Body ground	Always	10 kΩ or higher
G8-3 (L+) or G14-2 (FL+) - Body ground	Always	10 kΩ or higher
G8-2 (L-) or G14-7 (FL-) - Body ground	Always	10 kΩ or higher

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

REPAIR OR REPLACE HARNESS OR CONNECTOR

Sound of Portable Player cannot be Heard from Speakers or Sound is Low

Sound Signal Circuit between Radio Receiver and Stereo Jack Adapter

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