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

DESCRIPTION

The No. 1 stereo jack adapter assembly sends an external device sound signal to the navigation receiver assembly through 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 or speakers.

WIRING DIAGRAM

A003RMEE02

INSPECTION PROCEDURE

PROCEDURE


  1. CHECK HARNESS AND CONNECTOR


    1. Disconnect the E26 navigation receiver assembly connector.

    2. Disconnect the E103 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
      E26-19 (AUXI) - E103-4 (AUXO) Always Below 1 Ω
      E26-18 (AGND) - E103-5 (AGND) Always Below 1 Ω
      E26-15 (ARI) - E103-2 (ARO) Always Below 1 Ω
      E26-17 (ALI) - E103-1 (ALO) Always Below 1 Ω
      E26-16 (ASGN) - E103-3 (ASGN) Always Below 1 Ω
      E26-19 (AUXI) - Body ground Always 10 kΩ or higher
      E26-18 (AGND) - Body ground Always 10 kΩ or higher
      E26-15 (ARI) - Body ground Always 10 kΩ or higher
      E26-17 (ALI) - Body ground Always 10 kΩ or higher
      E26-16 (ASGN) - 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