NAVIGATION SYSTEM (for HDD) Navigation ECU Power Source Circuit

DESCRIPTION

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

WIRING DIAGRAM

A01NCRUE01

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 POWER SOURCE)


    1. A01NCTPE09
      Text in Illustration
      *1

      Front view of wire harness connector

      (to Display and Navigation Module Display)

      Disconnect the G4 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
      G4-10 (GND1) - Body ground Always Below 1 Ω

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      G4-1 (+B1) - G4-10 (GND1) Power switch off 11 to 14 V
      G4-2 (ACC) - G4-10 (GND1) Power switch on (ACC) 11 to 14 V
      G4-3 (IG) - G4-10 (GND1) Power switch on (IG) 11 to 14 V

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

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