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

DTC Code DTC Name
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

E261261E52

CAUTION / NOTICE / HINT

Note:

Check that the wire harness is properly installed and does not have any sharp bends, pinching or loose connections (Click here).

PROCEDURE

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

    1. Disconnect the z27 radio and display receiver assembly connector.

    2. Disconnect the z26 navigation ECU connector.

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

      Standard Resistance

      Tester Connection

      Condition

      Specified Condition

      z27-2 (SPDO) - z26-5 (SPD)

      Always

      Below 1 Ω

      z27-2 (SPDO) - Body ground

      Always

      10 kΩ or higher

    PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

    (Click here)

    REPAIR OR REPLACE HARNESS OR CONNECTOR