NAVIGATION SYSTEM(for Radio and Display Type) Vehicle Speed Signal Circuit between Radio Receiver and Extension Module

DESCRIPTION

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

WIRING DIAGRAM

A005EA8E58

PROCEDURE


  1. CHECK NO. 1 NAVIGATION WIRE


    1. Remove the No. 1 navigation wire Click here

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      Y2-2 (SPD0) - Y3-5 (SPD) Always Below 1 Ω
      Y2-2 (SPD0) - Body ground Always 10 kΩ or higher

    OK

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

    NG

    REPAIR OR REPLACE NO. 1 NAVIGATION WIRE Click here