NAVIGATION SYSTEM Sound Signal Circuit between Navigation Receiver Assembly and Television Display Assembly

DESCRIPTION

The television display assembly sends an RSE sound signal to the navigation ECU sub-assembly via the sound signal circuit.

The sound signal that has been sent is amplified by the navigation ECU sub-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 ECU sub-assembly or speakers.

WIRING DIAGRAM

A01CDMBE04

INSPECTION PROCEDURE

PROCEDURE


  1. CHECK HARNESS AND CONNECTOR (NAVIGATION ECU SUB-ASSEMBLY - TELEVISION DISPLAY ASSEMBLY)


    1. Disconnect the F35 navigation ECU sub-assembly connector.

    2. Disconnect the S6 television display assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      F35-2 (CDR+) - S6-9 (R+) Always Below 1 Ω
      F35-3 (CDR-) - S6-10 (R-) Always Below 1 Ω
      F35-4 (CDL+) - S6-7 (L+) Always Below 1 Ω
      F35-5 (CDL-) - S6-8 (L-) Always Below 1 Ω
      F35-1 (CSLD) - S6-11 (SLD9) Always Below 1 Ω
      F35-2 (CDR+) - Body ground Always 10 kΩ or higher
      F35-3 (CDR-) - Body ground Always 10 kΩ or higher
      F35-4 (CDL+) - Body ground Always 10 kΩ or higher
      F35-5 (CDL-) - Body ground Always 10 kΩ or higher
      F35-1 (CSLD) - 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