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 INTELLIGENT TESTER (BACK SONAR OR CLEARANCE SONAR SWITCH ASSEMBLY)

INSPECT BACK SONAR OR CLEARANCE SONAR SWITCH ASSEMBLY

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

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 parking assist ECU*1 or clearance warning ECU assembly*2.
  1. *1: w/ Side Monitor System
  2. *2: w/o Side Monitor System

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


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

1.READ VALUE USING INTELLIGENT TESTER (BACK SONAR OR CLEARANCE SONAR SWITCH ASSEMBLY)

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

    Clearance Sonar
    Tester Display
    		Measurement Item/Range
    		Normal Condition
    		Diagnostic Note
    Main Switch
    		Back sonar or clearance sonar switch assembly / ON or OFF
    		OFF: Back sonar or clearance sonar switch assembly off
    ON: Back sonar or clearance sonar switch assembly on
    		-
    OK:
    The intelligent tester 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).

    Result
    Result
    		Proceed to
    OK (w/ Side Monitor System)
    		A
    OK (w/o Side Monitor System)
    		B
    NG
    		C


B
Go to step 4

C
REPLACE BACK SONAR OR CLEARANCE SONAR SWITCH ASSEMBLY (Click here)
A


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

  1. Disconnect the G15 back sonar or clearance sonar switch assembly connector.

  1. Disconnect the F76 parking assist ECU connector.

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

    Standard Voltage:
    Tester Connection
    		Switch Condition
    		Specified Condition
    G15-6 (IG) - Body ground
    		Engine switch on (IG)
    		11 to 14 V
    Engine switch off
    		Below 1 V

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    G15-9 (ECU) - F76-25 (CSSW)
    		Always
    		Below 1 Ω
    G15-9 (ECU) - Body ground
    		Always
    		10 kΩ or higher


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

REPLACE PARKING ASSIST ECU (Click here)

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

  1. Disconnect the G15 back sonar or clearance sonar switch assembly connector.

  1. Disconnect the F12 clearance warning ECU assembly connector.

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

    Standard Voltage:
    Tester Connection
    		Switch Condition
    		Specified Condition
    G15-6 (IG) - Body ground
    		Engine switch on (IG)
    		11 to 14 V
    Engine switch off
    		Below 1 V

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    G15-9 (ECU) - F12-12 (CSSW)
    		Always
    		Below 1 Ω
    G15-9 (ECU) - Body ground
    		Always
    		10 kΩ or higher


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

REPLACE CLEARANCE WARNING ECU ASSEMBLY (Click here)