NAVIGATION SYSTEM (for Navigation Receiver Type) Navigation Receiver Assembly Power Source Circuit

DESCRIPTION

This is the power source circuit to operate the navigation ECU sub-assembly.

WIRING DIAGRAM

A01HQEWE23

INSPECTION PROCEDURE

Note

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

PROCEDURE


  1. CHECK HARNESS AND CONNECTOR (NAVIGATION ECU SUB-ASSEMBLY - BATTERY, BODY GROUND)


    1. Disconnect the navigation ECU sub-assembly connectors.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      I64-7 (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
      I64-4 (+B1) - I64-7 (GND1) Always 11 to 14 V
      I64-3 (ACC1) - I64-7 (GND1) Ignition switch ACC 11 to 14 V
      I67-1 (IG) - I64-7 (GND1) Ignition switch ON 11 to 14 V

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

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