Toyota Parking Assist-Sensor System (W/O Multi-Display) Clearance Sonar Main Switch Circuit


DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

INSPECT BACK SONAR OR CLEARANCE SONAR SWITCH ASSEMBLY

CHECK HARNESS AND CONNECTOR (BACK SONAR OR CLEARANCE SONAR SWITCH - BATTERY AND BODY GROUND)

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

TOYOTA PARKING ASSIST-SENSOR SYSTEM (w/o Multi-display) - Clearance Sonar Main Switch Circuit


DESCRIPTION

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

WIRING DIAGRAM


Land Cruiser, Land Cruiser Prado. Grj150 Trj150,155 Kdj150,155 Lj150, Gdj150,155.Park Assist Monitoring.Toyota Parking Assist-Sensor System (W/ Multi-Display).Toyota Parking Assist-Sensor System (W/O Multi-Display) Clearance Sonar Main Switch Circuit


INSPECTION PROCEDURE

NOTICE:
Inspect the fuses for circuits related to this system before performing the following inspection procedure.
1.INSPECT BACK SONAR OR CLEARANCE SONAR SWITCH ASSEMBLY


    Land Cruiser, Land Cruiser Prado. Grj150 Trj150,155 Kdj150,155 Lj150, Gdj150,155.Park Assist Monitoring.Toyota Parking Assist-Sensor System (W/ Multi-Display).Toyota Parking Assist-Sensor System (W/O Multi-Display) Clearance Sonar Main Switch Circuit

  1. Remove the back sonar or clearance sonar switch assembly (LandCruiser RM0000046I300NX.html).

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

    Standard Resistance:
    Tester Connection
    		Switch Condition
    		Specified Condition
    3 (ECU) - 6 (IG)
    		Pressed (on)
    		Below 1 Ω
    3 (ECU) - 6 (IG)
    		Not pressed (off)
    		10 kΩ or higher


NG
REPLACE BACK SONAR OR CLEARANCE SONAR SWITCH ASSEMBLY (LandCruiser RM0000046I300NX.html)
OK


2.CHECK HARNESS AND CONNECTOR (BACK SONAR OR CLEARANCE SONAR SWITCH - BATTERY AND BODY GROUND)


    Land Cruiser, Land Cruiser Prado. Grj150 Trj150,155 Kdj150,155 Lj150, Gdj150,155.Park Assist Monitoring.Toyota Parking Assist-Sensor System (W/ Multi-Display).Toyota Parking Assist-Sensor System (W/O Multi-Display) Clearance Sonar Main Switch Circuit

  1. Disconnect the G13 back sonar or clearance sonar switch assembly connector.

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

    Standard Voltage:
    Tester Connection
    		Switch Condition
    		Specified Condition
    G13-6 (IG) - Body ground
    		Ignition switch ON
    		11 to 14 V
    G13-6 (IG) - Body ground
    		Ignition 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
    G13-7 (IND) - Body ground
    		Always
    		Below 1 Ω
Text in Illustration
*a
Front view of wire harness connector
(to Back Sonar or Clearance Sonar Switch)


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


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

  1. Disconnect the G13 back sonar or clearance sonar switch assembly connector.

  1. Disconnect the I1 clearance warning ECU connector.

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    G13-3 (ECU) - I1-8 (CSSW)
    		Always
    		Below 1 Ω
    G13-3 (ECU) - Body ground
    		Always
    		10 kΩ or higher


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE (LandCruiser RM000003QOU01DX.html)