NAVIGATION SYSTEM (for HDD) Navigation ECU Power Source Circuit

DESCRIPTION

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

WIRING DIAGRAM

A003WDPE12

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 COMPUTER SUB-ASSEMBLY POWER SOURCE)


    1. Disconnect the H60 navigation computer sub-assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      H60-10 (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
      H60-1 (+B1) - H60-10 (GND1) Power switch off 11 to 14 V
      H60-2 (ACC) - H60-10 (GND1) Power switch on (ACC) 11 to 14 V
      H60-3 (IG) - H60-10 (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