Lexus IS250 · Service Manual BODY ELECTRICAL

Display Signal Circuit between Navigation ECU and Television Camera ECU

Circuit diagnosis

DESCRIPTION

This is the display signal circuit from the navigation ECU to the television camera ECU.

WIRING DIAGRAM

E124108E02

INSPECTION PROCEDURE


1. CHECK HARNESS AND CONNECTOR (NAVIGATION ECU - TELEVISION CAMERA ECU)

  1. E125087E02
    Disconnect the navigation ECU connector q2 and television camera ECU connector q3.

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

    Standard resistance:
    Tester connection
    Condition
    Specified condition
    GVI+ - GVI+
    Always
    Below 1 Ω
    GVI- - GVI-
    Always
    Below 1 Ω
    GND - GVG1
    Always
    Below 1 Ω
    GVIF- - Body ground
    Always
    10 kΩ or higher
    GVIF+ - Body ground
    Always
    10 kΩ or higher



NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE


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