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 radio receiver assembly via this circuit.

The sound signal that has been sent is amplified by the stereo component amplifier 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 stereo component amplifier assembly, radio receiver assembly, telematics transceiver* or speakers.


WIRING DIAGRAM

A00055EE02
*a (Shielded)
*b No. 1 Stereo Jack Adapter Assembly
*c Radio Receiver Assembly

PROCEDURE


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


    1. Disconnect the H98 radio receiver assembly connector.

    2. Disconnect the H185 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
      H98-16 (ADPG) - H185-1 (ADPG) Always Below 1 Ω
      H98-7 (VAR+) - H185-2 (VAR+) Always Below 1 Ω
      H98-8 (VAL+) - H185-3 (VAL+) Always Below 1 Ω
      H98-15 (VA-) - H185-4 (VA-) Always Below 1 Ω
      H98-5 (AGND) - H185-7 (AGND) Always Below 1 Ω
      H98-16 (ADPG) - Body ground Always 10 kΩ or higher
      H98-7 (VAR+) - Body ground Always 10 kΩ or higher
      H98-8 (VAL+) - Body ground Always 10 kΩ or higher
      H98-15 (VA-) - Body ground Always 10 kΩ or higher
      H98-5 (AGND) - Body ground Always 10 kΩ or higher

    OK

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

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR