NAVIGATION SYSTEM Radio Receiver Power Source Circuit

DESCRIPTION

This circuit provides power to the radio and display receiver assembly.

WIRING DIAGRAM

A01IU28E01

INSPECTION PROCEDURE

Note


  • Inspect the fuses for circuits related to this system before performing the following inspection procedure.

  • Check that the wire harness is properly installed and does not have any sharp bends, pinching or loose connections Click here.

PROCEDURE


  1. CHECK HARNESS AND CONNECTOR (RADIO AND DISPLAY RECEIVER ASSEMBLY - BATTERY AND BODY GROUND)


    • *1: w/o Stop and Start System

    • *2: w/ Stop and Start System


    1. A01IO44E08
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Radio and Display Receiver Assembly)

      Disconnect the radio and display receiver assembly connectors.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      H107-7 (GND1) - Body ground Always Below 1 Ω

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      H107-4 (+B1) - Body ground Always 11 to 14 V*1
      9.5 to 14 V*2
      H107-3 (ACC1) - Body ground Ignition switch ACC 11 to 14 V*1
      9.5 to 14 V*2
      H105-1 (IG) - Body ground Ignition switch ON 11 to 14 V

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

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