Toyota Avalon (XX50) 2019-2022 Service & Repair Manual: Voice Guidance does not Function

Toyota Avalon (XX50) 2019-2022 Service & Repair Manual / Audio, Visual, Telematics / Navigation / Multi Info Display / Navigation System(for Gasoline Model) / Voice Guidance does not Function

WIRING DIAGRAM

PROCEDURE

1.

CHECK VOICE GUIDANCE SETTING

(a) Check that the voice guidance setting is not off.

OK:

Voice guidance setting is not off.

NG

CHANGE VOICE GUIDANCE SETTING TO ON
OK

2.

CHECK HARNESS AND CONNECTOR (RADIO AND DISPLAY RECEIVER ASSEMBLY - NAVIGATION ECU)

(a) Disconnect the G1 radio and display receiver assembly connector.

(b) Disconnect the G13 navigation ECU connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

G1-22 (SI+) - G13-6 (VOI+)

Always

Below 1 Ω

G1-23 (SI-) - G13-7 (VOI-)

Always

Below 1 Ω

G1-22 (SI+) or G13-6 (VOI+) - Body ground

Always

10 kΩ or higher

G1-23 (SI-) or G13-7 (VOI-) - Body ground

Always

10 kΩ or higher

G13-8 (SLD1) - 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
    Voice Guidance Circuit between Radio Receiver and Stereo Component Amplifier

    Voice is not Recognized

    See More:

    Toyota Avalon (XX50) 2019-2022 Service & Repair Manual > Meter / Gauge System(for Hv Model): Terminals Of Ecu
    TERMINALS OF ECU COMBINATION METER ASSEMBLY (a) Measure the voltage and resistance and check for pulses according to the value(s) in the table below. Terminal No. (Symbol) Wiring Color Terminal Description Signal Input/Output Condition Specified Condition G16-1 (ILL-) - Body ground LA-L - Body groun ...

    Toyota Avalon (XX50) 2019-2022 Owners Manual

    Toyota Avalon (XX50) 2019-2022 Service & Repair Manual

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