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 multi-media module 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, telematics transceiver*1 or speakers.

• *1: w/ Telematics Transceiver

WIRING DIAGRAM

PROCEDURE

1. CHECK HARNESS AND CONNECTOR (MULTI-MEDIA MODULE RECEIVER ASSEMBLY - NO. 1 STEREO JACK ADAPTER ASSEMBLY)

   
   
   1. 

      Text in Illustration

      *a	Front view of wire harness connector (to Multi-media Module Receiver Assembly)
      *b	Front view of wire harness connector (to No. 1 Stereo Jack Adapter Assembly)

      Disconnect the H98 multi-media module receiver assembly connector.

   2. Disconnect the H154 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) - H154-9 (AUXO) Always Below 1 Ω H98-7 (VAR+) - H154-6 (ARO) Always Below 1 Ω H98-8 (VAL+) - H154-7 (ALO) Always Below 1 Ω H98-15 (VA-) - H154-8 (ASGN) Always Below 1 Ω H98-5 (AGND) - H154-10 (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