Last Modified: 08-21-2023 6.11:8.1.0 Doc ID: RM100000001BTCS
Model Year Start: 2019 Model: Avalon HV Prod Date Range: [04/2018 -           ]
Title: NAVIGATION / MULTI INFO DISPLAY: NAVIGATION SYSTEM (for HV Model): Sound Signal Circuit between Radio Receiver and Stereo Component Amplifier; 2019 - 2022 MY Avalon HV [04/2018 -        ]

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.

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

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

OK

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE 2019 - 2020 MY Avalon HV [04/2018 - 08/2020]; NAVIGATION / MULTI INFO DISPLAY: NAVIGATION SYSTEM (for HV Model): PROBLEM SYMPTOMS TABLE 2021 - 2022 MY Avalon HV [08/2020 -        ]; NAVIGATION / MULTI INFO DISPLAY: NAVIGATION SYSTEM (for HV Model): PROBLEM SYMPTOMS TABLE

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR