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 > Telematics System(for Gasoline Model): Diagnostic Trouble Code Chart
    DIAGNOSTIC TROUBLE CODE CHART Telematics System DTC No. Detection Item Link U0142 Lost Communication with Body Control Module "B" U0155 Lost Communication with Instrument Panel Cluster (IPC) Control Module U0163 Lost Communication with Navigation Control Module ...

    Toyota Avalon (XX50) 2019-2022 Owners Manual

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

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