Toyota Parking Assist-Sensor System Clearance Warning Buzzer Circuit

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

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

PERFORM ACTIVE TEST USING INTELLIGENT TESTER

CHECK HARNESS AND CONNECTOR (CLEARANCE WARNING ECU - CLEARANCE WARNING BUZZER)

REPLACE CLEARANCE WARNING BUZZER

PERFORM ACTIVE TEST USING INTELLIGENT TESTER

TOYOTA PARKING ASSIST-SENSOR SYSTEM - Clearance Warning Buzzer Circuit


DESCRIPTION

The clearance warning buzzer sounds using pulse signals sent from the clearance warning ECU assembly. The buzzer sounds to alert the driver and the buzzer frequency changes depending on the distance to an obstacle.

WIRING DIAGRAM


Camry. Acv40 Gsv40.Park Assist Monitoring.Toyota Parking Assist-Sensor System.Toyota Parking Assist-Sensor System Clearance Warning Buzzer Circuit


INSPECTION PROCEDURE

1.PERFORM ACTIVE TEST 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 / Active Test.

  1. Check that the buzzer operates by performing the Active Test.

    Clearance Sonar
    Tester Display
    		Test Part
    		Control Range
    		Diagnostic Note
    Buzzer
    		Clearance warning buzzer
    		Operate or Stop
    		Confirm that the vehicle is stopped and the ignition switch is ON
    OK:
    The clearance warning buzzer sounds.


NG
Go to step 2
OK

PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE (CAMRY_ACV40 X394000005X065D.html)

2.CHECK HARNESS AND CONNECTOR (CLEARANCE WARNING ECU - CLEARANCE WARNING BUZZER)


    Camry. Acv40 Gsv40.Park Assist Monitoring.Toyota Parking Assist-Sensor System.Toyota Parking Assist-Sensor System Clearance Warning Buzzer Circuit

  1. Disconnect the O28 ECU connector.

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

    Standard resistance:
    Tester Connection
    		Condition
    		Specified Condition
    O28-10 (BBZ) - F31-1
    		Always
    		Below 1 Ω
    O28-11 (EF) - F31-2
    		Below 1 Ω
    O28-10 (BBZ) - Body ground
    		10 kΩ or higher
    O28-11 (EF) - Body ground
    		10 kΩ or higher


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


3.REPLACE CLEARANCE WARNING BUZZER

  1. Replace the clearance warning buzzer with a new or normally functioning one (CAMRY_ACV40 RM000001PYN01TX.html).


NEXT


4.PERFORM ACTIVE TEST 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 / Active Test.

  1. Check that the buzzer operates by performing the Active Test.

    Clearance Sonar
    Tester Display
    		Test Part
    		Control Range
    		Diagnostic Note
    Buzzer
    		Clearance warning buzzer
    		Operate or Stop
    		Confirm that the vehicle is stopped and the engine switch is on (IG)
    OK:
    The clearance warning buzzer sounds.


NG
REPLACE CLEARANCE WARNING ECU (CAMRY_ACV40 RM000001PYJ00TX.html)
OK

END (CLEARANCE WARNING BUZZER WAS DEFECTIVE)