NAVIGATION SYSTEM Sound Signal Circuit between Navigation Receiver Assembly and Stereo Jack Adapter

DESCRIPTION

The No. 1 stereo jack adapter assembly sends the sound signal from an external device to the navigation receiver assembly via this circuit.

The sound signal that has been sent is amplified by the navigation receiver assembly and then is sent to the speakers.

If there is an open or short in the circuit, sound cannot be heard from the speakers even if there is no malfunction in the navigation receiver assembly, DCM (telematics transceiver)*1 or speakers.


WIRING DIAGRAM

A01HVJTE10

INSPECTION PROCEDURE

PROCEDURE


  1. CHECK HARNESS AND CONNECTOR (NAVIGATION RECEIVER ASSEMBLY - NO. 1 STEREO JACK ADAPTER ASSEMBLY)


    1. A01HT59E62
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Navigation Receiver Assembly)
      *b

      Front view of wire harness connector

      (to No. 1 Stereo Jack Adapter Assembly)

      Disconnect the I74 navigation receiver assembly connector.

    2. Disconnect the I146 No. 1 stereo jack adapter assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      I74-25 (ADPG) - I146-9 (AUXO) Always Below 1 Ω
      I74-26 (VAR+) - I146-6 (ARO) Always Below 1 Ω
      I74-28 (VAL+) - I146-7 (ALO) Always Below 1 Ω
      I74-27 (VA-) - I146-8 (ASGN) Always Below 1 Ω
      I74-11 (AGND) - I146-10 (AGND) Always Below 1 Ω
      I74-25 (ADPG) - Body ground Always 10 kΩ or higher
      I74-26 (VAR+) - Body ground Always 10 kΩ or higher
      I74-28 (VAL+) - Body ground Always 10 kΩ or higher
      I74-27 (VA-) - Body ground Always 10 kΩ or higher
      I74-11 (AGND) - 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