NAVIGATION SYSTEM (for Navigation Receiver Type) 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

A01HO47E07

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