Toyota Parking Assist-Sensor System Clearance Sonar Main Switch Circuit

Audio Visual Telematics. Land Cruiser. Urj200, 202 Grj200 Vdj200
Park Assist Monitoring. Land Cruiser. Urj200, 202 Grj200 Vdj200

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

READ VALUE USING GTS

INSPECT BACK SONAR OR CLEARANCE SONAR SWITCH ASSEMBLY

CHECK HARNESS AND CONNECTOR (BACK SONAR OR CLEARANCE SONAR SWITCH ASSEMBLY - CLEARANCE WARNING ECU ASSEMBLY AND BATTERY)

TOYOTA PARKING ASSIST-SENSOR SYSTEM - Clearance Sonar Main Switch Circuit


DESCRIPTION

When the back sonar or clearance sonar switch assembly turns on, the ON signal is input into the clearance warning ECU assembly.

WIRING DIAGRAM


Land Cruiser. Urj200, 202 Grj200 Vdj200.Park Assist Monitoring.Toyota Parking Assist-Sensor System.Toyota Parking Assist-Sensor System Clearance Sonar Main Switch Circuit


INSPECTION PROCEDURE

Inspect the fuses for circuits related to this system before performing the following inspection procedure.
1.READ VALUE USING GTS

  1. Check the Data List for proper functioning of the back sonar or clearance sonar switch assembly (Click here).

    Clearance Sonar
    Tester Display
    		Measurement Item/Range
    		Normal Condition
    		Diagnostic Note
    Main Switch
    		Back sonar or clearance sonar switch assembly / OFF or ON
    		OFF: Back sonar or clearance sonar switch assembly off
    ON: Back sonar or clearance sonar switch assembly on
    		-
    OK:
    The GTS display changes according to operation of back sonar or clearance sonar switch assembly.


NG
Go to step 2
OK

PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE (Click here)

2.INSPECT BACK SONAR OR CLEARANCE SONAR SWITCH ASSEMBLY

  1. Remove the back sonar or clearance sonar switch assembly (Click here).

  1. Inspect the back sonar or clearance sonar switch assembly (Click here).



NG
REPLACE BACK SONAR OR CLEARANCE SONAR SWITCH ASSEMBLY (Click here)
OK


3.CHECK HARNESS AND CONNECTOR (BACK SONAR OR CLEARANCE SONAR SWITCH ASSEMBLY - CLEARANCE WARNING ECU ASSEMBLY AND BATTERY)

  1. Disconnect the F92 back sonar or clearance sonar switch assembly connector.

  1. Disconnect the G21 clearance warning ECU assembly connector.

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    G21-6 (ECU) - F92-9 (CLSW)
    		Always
    		Below 1 Ω
    G21-7 (IND) - F92-32 (MSDL)
    		Always
    		Below 1 Ω

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

    Standard Voltage:
    Tester Connection
    		Condition
    		Specified Condition
    G21-3 (IG) - Body ground
    		Engine switch on (IG)
    		11 to 14 V
    Below 1 V


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

REPLACE CLEARANCE WARNING ECU ASSEMBLY (Click here)