NAVIGATION SYSTEM (for DVD) Navigation ECU Power Source Circuit

DESCRIPTION

This is the power source circuit to operate the display and navigation module display.

WIRING DIAGRAM

A009BX3E01

INSPECTION PROCEDURE

Note

Inspect the fuses for circuits related to this system before performing the following inspection procedure.

PROCEDURE


  1. CHECK HARNESS AND CONNECTOR (DISPLAY AND NAVIGATION MODULE DISPLAY - BATTERY AND BODY GROUND)


    1. A0094UZE46
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Display and Navigation Module Display)

      Disconnect the H4 display and navigation module display connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      H4-10 (GND1) - Body ground Always Below 1 Ω

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      H4-1 (+B1) - H4-10 (GND1) Always 11 to 14 V
      H4-3 (IG) - H4-10 (GND1) Ignition switch ON 11 to 14 V
      H4-2 (ACC) - H4-10 (GND1) Ignition switch ACC 11 to 14 V

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

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