NAVIGATION SYSTEM Navigation Voice Circuit

DESCRIPTION

This circuit is used when the voice guidance in the navigation system is on or an incoming cellular phone voice in the "Bluetooth" hands-free system is heard.

Using this circuit, the navigation ECU sub-assembly sends the signals to the stereo component amplifier assembly.

WIRING DIAGRAM

A01EV4ZE02

INSPECTION PROCEDURE

PROCEDURE


  1. CHECK HARNESS AND CONNECTOR (NAVIGATION ECU SUB-ASSEMBLY - STEREO COMPONENT AMPLIFIER ASSEMBLY)


    1. Disconnect the navigation ECU sub-assembly connector.

    2. Disconnect the stereo component amplifier assembly connector.

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

      Standard Resistance
      Tester connection Condition Specified condition
      I65-2 (RL+) - I69-15 (II1+) Always Below 1 Ω
      I65-6 (RL-) - I69-14 (II1-) Always Below 1 Ω
      I69-18 (SLD1) - Body ground Always 10 kΩ or higher
      I65-2 (RL+) - Body ground Always 10 kΩ or higher
      I65-6 (RL-) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE Click here