Toyota Parking Assist-Sensor System Clearance Sonar Main Switch Circuit

Body Electrical. Camry. Acv40 Gsv40
Park Assist Monitoring. Camry. Acv40 Gsv40

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

READ VALUE USING INTELLIGENT TESTER

INSPECT CLEARANCE SONAR MAIN SWITCH ASSEMBLY

CHECK HARNESS AND CONNECTOR (CLEARANCE SONAR MAIN SWITCH - BATTERY)

CHECK HARNESS AND CONNECTOR (CLEARANCE SONAR MAIN SWITCH - ECU)

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


DESCRIPTION

The clearance sonar main switch assembly is installed at the base of the driver side instrument panel.
When the clearance sonar main switch is turned on, an ON signal is sent to the clearance warning ECU. The Toyota parking assist-sensor system operates according to this signal.

WIRING DIAGRAM


Camry. Acv40 Gsv40.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

  1. Connect the intelligent tester to the DLC3.

  1. Turn the ignition switch to ON.

  1. Turn the intelligent tester on.

  1. Enter the following menus: Body / Clearance Sonar / Data List.

  1. Check the Data List for proper functioning of the following items.

    Clearance Sonar
    Tester Display
    		Measurement Item/Range
    		Normal Condition
    		Diagnostic Note
    Main Switch
    		Clearance sonar main switch/OFF or ON
    		OFF: Clearance sonar main switch off
    ON: Clearance sonar main switch on with indicator illuminated
    		-
    Clearance Sonar ECU
    		ECU information/Normal or Abnormal
    		Normal: ECU normal
    Abnormal: ECU not normal
    		-
    Result:
    Result
    		Proceed to
    Both of the following conditions are met:
    1. The display changes as shown above when the clearance sonar main switch is operated.
    1. "Normal" is displayed.
    		A
    "Normal" is not displayed.
    		B
    Both of the following conditions are met:
    1. The display does not change as shown above when the clearance sonar main switch is operated.
    1. "Normal" is displayed.
    		C


B
REPLACE CLEARANCE WARNING ECU (CAMRY_ACV40 RM000001PYJ00TX.html)

C
Go to step 2
A

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE (CAMRY_ACV40 X394000005X065D.html)

2.INSPECT CLEARANCE SONAR MAIN SWITCH ASSEMBLY

  1. Remove the clearance sonar main switch assembly (CAMRY_ACV40 RM000003GR8002X.html).



    Camry. Acv40 Gsv40.Park Assist Monitoring.Toyota Parking Assist-Sensor System.Toyota Parking Assist-Sensor System Clearance Sonar Main Switch Circuit

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

    Standard Resistance:
    Tester Connection
    		Switch Condition
    		Specified Condition
    E71-6 (IG) - E71-3 (ECU)
    		Clearance sonar main switch is pushed
    		Below 1 Ω
    E71-6 (IG) - E71-3 (ECU)
    		Clearance sonar main switch is not pushed
    		10 kΩ or higher


NG
REPLACE CLEARANCE SONAR MAIN SWITCH ASSEMBLY (CAMRY_ACV40 RM000003GR8002X.html)
OK


3.CHECK HARNESS AND CONNECTOR (CLEARANCE SONAR MAIN SWITCH - BATTERY)


    Camry. Acv40 Gsv40.Park Assist Monitoring.Toyota Parking Assist-Sensor System.Toyota Parking Assist-Sensor System Clearance Sonar Main Switch Circuit

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

    Standard Voltage:
    Tester Connection
    		Condition
    		Specified Condition
    E71-6 (IG) - Body ground
    		Ignition switch ON
    		11 to 14 V
    E71-6 (IG) - Body ground
    		Ignition switch off
    		Below 1 V


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


4.CHECK HARNESS AND CONNECTOR (CLEARANCE SONAR MAIN SWITCH - ECU)


    Camry. Acv40 Gsv40.Park Assist Monitoring.Toyota Parking Assist-Sensor System.Toyota Parking Assist-Sensor System Clearance Sonar Main Switch Circuit

  1. Disconnect the clearance warning ECU connector.

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    O28-12 (CLSW) - E71-3 (ECU)
    		Always
    		Below 1 Ω
    O28-12 (CLSW) - Body ground
    		Always
    		10 kΩ or higher


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

REPLACE CLEARANCE WARNING ECU (CAMRY_ACV40 RM000001PYJ00TX.html)