NAVIGATION SYSTEM (for HDD) > Navigation ECU Power Source Circuit

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DESCRIPTION

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

WIRING DIAGRAM


E181044E12


INSPECTION PROCEDURE

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

1.CHECK HARNESS AND CONNECTOR (NAVIGATION COMPUTER SUB-ASSEMBLY POWER SOURCE)

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

  1. 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

  1. 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)