RM35X0E _56 Audio / Visual / Telematics _079315 PARK ASSIST / MONITORING _0385761 TOYOTA PARKING ASSIST-SENSOR SYSTEM J

PARK ASSIST / MONITORING  TOYOTA PARKING ASSIST-SENSOR SYSTEM  Clearance Warning Buzzer Circuit  


DESCRIPTION

This circuit consists of the No. 1 clearance warning buzzer and clearance warning ECU assembly. An ECU-excited type buzzer is used. The ECU operates the buzzer using a sound pattern that changes depending on the distance to the obstacle.

WIRING DIAGRAM

E220929E91
1.979,1.354 2.104,1.583 0.125,0.229 10 false 1 3.271,1.354 3.448,1.583 0.177,0.229 10 false 2 1.635,2.021 1.969,2.25 0.333,0.229 10 false N62 1.635,2.188 3.74,2.542 2.104,0.354 10 false No. 1 Clearance Warning Buzzer 4.198,2.021 4.51,2.25 0.313,0.229 10 false N48 4.188,2.188 6.448,2.5 2.26,0.313 10 false Clearance Warning ECU Assembly 4.698,0.615 4.875,0.771 0.177,0.156 10 false 11 4.948,0.708 5.479,1.01 0.531,0.302 10 false CBZ 4.688,1.354 4.865,1.51 0.177,0.156 10 false 10 4.948,1.438 5.229,1.677 0.281,0.24 10 false EF 2.135,1.354 2.385,1.615 0.25,0.26 10 false Z+ 3.063,1.354 3.24,1.573 0.177,0.219 10 false Z-

PROCEDURE

1.PERFORM ACTIVE TEST USING GTS
a.

Connect the GTS to the DLC3.


b.

Turn the ignition switch to ON.


c.

Turn the GTS on.


d.

Enter the following menus: Body Electrical / Clearance Sonar / Active Test.


e.

Check that the buzzer operates by performing the Active Test.

Body Electrical > Clearance Sonar > Active Test
Tester Display Measurement Item Control Range Diagnostic Note
Buzzer No. 1 clearance warning buzzer Stop or Operate Confirm that the vehicle is stopped and the ignition switch is ON
Body Electrical > Clearance Sonar > Active Test
Tester Display
Buzzer
50004 170 4
OK:

The No. 1 clearance warning buzzer sounds.



Result:
Proceed to
OK
NG



OK

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

Click hereAudio / Visual / Telematics>PARK ASSIST / MONITORING>TOYOTA PARKING ASSIST-SENSOR SYSTEM>PROBLEM SYMPTOMS TABLE


NG

2.CHECK HARNESS AND CONNECTOR (CLEARANCE WARNING ECU ASSEMBLY - NO. 1 CLEARANCE WARNING BUZZER)
2.CHECK HARNESS AND CONNECTOR (CLEARANCE WARNING ECU ASSEMBLY - NO. 1 CLEARANCE WARNING BUZZER)
a.

Disconnect the N48 clearance warning ECU assembly connector.


b.

Disconnect the N62 No. 1 clearance warning buzzer connector.


c.

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

Standard Resistance:
Tester Connection Condition Specified Condition
N48-11 (CBZ) - N62-1 (Z+) Always Below 1 Ω
N48-10 (EF) - N62-2 (Z-) Always Below 1 Ω
N48-11 (CBZ) or N62-1 (Z+) - Body ground Always 10 kΩ or higher
N48-10 (EF) or N62-2 (Z-) - Body ground Always 10 kΩ or higher



Result:
Proceed to
OK
NG



OK

3.REPLACE NO. 1 CLEARANCE WARNING BUZZER

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

4.PERFORM ACTIVE TEST USING GTS
a.

Connect the GTS to the DLC3.


b.

Turn the ignition switch to ON.


c.

Turn the GTS on.


d.

Enter the following menus: Body Electrical / Clearance Sonar / Active Test.


e.

Check that the buzzer operates by performing the Active Test.

Body Electrical > Clearance Sonar > Active Test
Tester Display Measurement Item Control Range Diagnostic Note
Buzzer No. 1 clearance warning buzzer Stop or Operate Confirm that the vehicle is stopped and the ignition switch is ON
Body Electrical > Clearance Sonar > Active Test
Tester Display
Buzzer
50004 170 4
OK:

The No. 1 clearance warning buzzer sounds.



Result:
Proceed to
OK
NG



OK

END (NO. 1 CLEARANCE WARNING BUZZER WAS DEFECTIVE)

NG

REPLACE CLEARANCE WARNING ECU ASSEMBLY

Click hereAudio / Visual / Telematics>PARK ASSIST / MONITORING>CLEARANCE WARNING ECU>REMOVAL