NAVIGATION SYSTEM Start Up Signal Circuit between Radio Receiver Assembly and Navigation ECU

DESCRIPTION

This circuit includes the navigation ECU and radio and display receiver assembly.

WIRING DIAGRAM

B008IT9E02
*1 Navigation ECU
*2 Radio Receiver Assembly

PROCEDURE


  1. CHECK HARNESS AND CONNECTOR (RADIO RECEIVER ASSEMBLY - NAVIGATION ECU)


    1. Disconnect the I154 radio receiver assembly connector.

    2. Disconnect the I160 navigation ECU connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      I154-7 (SUP) - I160-21 (SUP) Always Below 1 Ω
      I154-7 (SUP) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    OK

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

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR