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Home >> Lexus >> 2006 >> RX 330 AWD >> Repair and Diagnosis >> Accessories & Equipment >> Infotainment >> Navigation >> Navigation System >> Microphone Circuit between Multi-display and Navigation ECU >> Inspection Procedure

Inspection Procedure

  1. INSPECT NAVIGATION ECU 
    1. Disconnect the navigation ECU connector N6.
    2. Measure the resistance according to the value(s) in the table below.

    Resistance 

    TERMINALS RESISTANCE SPECIFICATION

    Tester connection Condition Specified Condition
    SNSE - Body ground Always Below 1 Ω
    Fig 1: Disconnecting Navigation ECU Connector N6
    G04093032Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: Go to next step. 

  2. CHECK HARNESS AND CONNECTOR (MULTI-DISPLAY - NAVIGATION ECU) 
    1. Disconnect the multi-display connector M4 and navigation ECU connector N6.
    2. Measure the resistance according to the value(s) in the table below.

    Resistance 

    TERMINALS RESISTANCE SPECIFICATION

    Tester connection Condition Specified Condition
    MCO+ - MIC+ Always Below 1 Ω
    MCO- - MIC- Always Below 1 Ω
    MCO+ - Body ground Always 10 kΩ or higher
    MCO- - Body ground Always 10 kΩ or higher
    Fig 2: Disconnecting Multi-Display Connector M4 And Navigation ECU Connector N6
    G04093033Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

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

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