NAVIGATION SYSTEM Vehicle Speed Signal Circuit between Radio Receiver and Extension Module

DESCRIPTION

The extension module receives a vehicle speed signal from the radio and display receiver assembly and information from the navigation antenna, and then adjusts vehicle position.

WIRING DIAGRAM

A003UA9E38

INSPECTION PROCEDURE

PROCEDURE


  1. CHECK HARNESS AND CONNECTOR (RADIO AND DISPLAY RECEIVER ASSEMBLY - EXTENSION MODULE)


    1. Disconnect the radio and display receiver assembly connector.

    2. Disconnect the extension module connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      i2-2 (SPD0) - i1-18 (SPD0) Always Below 1 Ω
      i2-2 (SPD0) - 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