Parking Assist Monitor System Reverse Signal Circuit

Body Electrical. Lexus Is250, Is220D. Gse20 Ale20
Park Assist Monitoring. Lexus Is250, Is220D. Gse20 Ale20

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

CHECK BACK-UP LIGHT

CHECK HARNESS AND CONNECTOR

PARKING ASSIST MONITOR SYSTEM - Reverse Signal Circuit


DESCRIPTION

The television camera ECU receives a reverse signal from the park/neutral position switch (A/T) or back-up light switch (M/T).

WIRING DIAGRAM


Lexus Is250, Is220D. Gse20 Ale20.Park Assist Monitoring.Clearance Sonar System.Parking Assist Monitor System Reverse Signal Circuit


INSPECTION PROCEDURE

1.CHECK BACK-UP LIGHT

  1. Move the shift lever to the R position and check if the back-up light comes on.

    OK:
    The back-up light comes on.

  1. Move the shift lever to the position other than R and check if the back-up light does not come on.

    OK:
    The back-up light does not come on.


NG
GO TO LIGHTING SYSTEM
OK


2.CHECK HARNESS AND CONNECTOR


    Lexus Is250, Is220D. Gse20 Ale20.Park Assist Monitoring.Clearance Sonar System.Parking Assist Monitor System Reverse Signal Circuit

  1. Disconnect the television camera ECU connector J92 and park/neutral position SW (A/T) or back-up light SW (M/T) connector.

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

    Standard resistance:
    Tester connection
    		Condition
    		Specified condition
    J92-3 (REV) - E45-1 (A/T)
    		Always
    		Below 1 Ω
    J92-3 (REV) - E55-1 (M/T)
    		Always
    		Below 1 Ω
    J92-3 (REV) - 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