Toyota Avalon (XX50) 2019-2022 Service & Repair Manual: Start Up Signal Circuit between Radio Receiver Assembly and Navigation ECU

Toyota Avalon (XX50) 2019-2022 Service & Repair Manual / Audio, Visual, Telematics / Navigation / Multi Info Display / Navigation System(for Gasoline Model) / Start Up Signal Circuit between Radio Receiver Assembly and Navigation ECU

DESCRIPTION

This circuit includes the navigation ECU and radio and display receiver assembly.

WIRING DIAGRAM

PROCEDURE

1.

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

G1-7 (SUP) - G13-21 (SUP)

Always

Below 1 Ω

G1-7 (SUP) or G13-21 (SUP) - 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
    Speaker Circuit

    Steering Pad Switch Circuit

    See More:

    Toyota Avalon (XX50) 2019-2022 Service & Repair Manual > Occupant Classification System(for Gasoline Model): Front Occupant Classification Sensor LH Circuit Malfunction (B1780)
    DESCRIPTION The front occupant classification sensor LH circuit consists of the occupant detection ECU and front occupant classification sensor LH. DTC B1780 is stored when a malfunction is detected in the front occupant classification sensor LH circuit. DTC No. Detection Item DTC Detection Conditio ...

    Toyota Avalon (XX50) 2019-2022 Owners Manual

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

    © 2025 Copyright www.tavalon.net
    0.0214