AUDIO AND VISUAL SYSTEM > Driver Side Speaker Circuit

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DESCRIPTION

When the vehicle is equipped with a navigation system, a sound signal for the driver's side is sent from the stereo component amplifier to the driver's side speaker via the navigation ECU.

WIRING DIAGRAM


E110897E02


E110897E03


INSPECTION PROCEDURE

1.CHECK NAVIGATION VOICE GUIDANCE

  1. Check if navigation voice guidance is heard from the speaker on the driver's side.

    OK:
    Voice guidance is heard.



NG
GO TO NAVIGATION SYSTEM
OK


2.INSPECT NAVIGATION ECU


    E113440E03

  1. Disconnect the navigation ECU connector N4.

  1. Measure the resistance according to the values in the table below.

    Standard resistance:
    Tester connection
    		Condition
    		Specified condition
    AUI+ - AUO+
    		Always
    		Below 1 Ω
    AUI- - AUO-
    		Always
    		Below 1 Ω



NG
REPLACE NAVIGATION ECU
OK


3.CHECK HARNESS AND CONNECTOR (NAVIGATION ECU - STEREO COMPONENT AMPLIFIER)


    E112013E02

  1. Disconnect the connectors from the navigation ECU and stereo component amplifier.

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

    Standard resistance (LHD):
    Tester connection
    		Condition
    		Specified condition
    AUI+ - TFL+ (*1), FL+ (*2)
    		Always
    		Below 1 Ω
    AUI- - TFL- (*1), FL- (*2)
    		Always
    		Below 1 Ω
    AUI+ - Body ground
    		Always
    		10 kΩ or higher
    AUI- - Body ground
    		Always
    		10 kΩ or higher

    Standard resistance (RHD):
    Tester connection
    		Condition
    		Specified condition
    AUI+ - TFR+ (*1), FR+ (*2)
    		Always
    		Below 1 Ω
    AUI- - TFR- (*1), FR- (*2)
    		Always
    		Below 1 Ω
    AUI+ - Body ground
    		Always
    		10 kΩ or higher
    AUI- - Body ground
    		Always
    		10 kΩ or higher

    *1: Mark Levinson System
    *2: Standard System



NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

RETURN TO THE ORIGINAL INSPECTION FLOW BECAUSE THE CHECK RESULT IS NORMAL