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 navigation antenna assembly, and then adjusts vehicle position.

WIRING DIAGRAM

A01EU0NE46

INSPECTION PROCEDURE

PROCEDURE


  1. INSPECT NO. 1 NAVIGATION WIRE


    1. Remove the No. 1 navigation wire Click here

    2. Disconnect the k2 radio and display receiver assembly connector.

    3. Disconnect the k3 navigation ECU connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      k2-2 (SPD0) - k3-5 (SPD) Always Below 1 Ω
      k2-2 (SPD0) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE NO. 1 NAVIGATION WIRE Click here

    OK

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