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

A01DTSFE35

INSPECTION PROCEDURE

PROCEDURE


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


    1. Disconnect the z12 radio and display receiver assembly connector.

    2. Disconnect the z13 navigation ECU connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      z12-2 (SPDO) - z13-5 (SPD) Always Below 1 Ω
      z12-2 (SPDO) - 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