RM36D0EC _56 Audio / Visual / Telematics _083082 PARK ASSIST / MONITORING _0711991 TOYOTA PARKING ASSIST-SENSOR SYSTEM J

PARK ASSIST / MONITORING  TOYOTA PARKING ASSIST-SENSOR SYSTEM  No. 1 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 buzzers using a sound pattern that changes depending on the distance to the obstacle.

WIRING DIAGRAM

E433063E27
5.5,1.906 6.677,2.375 1.177,0.469 10 false Clearance Warning ECU Assembly 5.479,1.74 5.938,1.938 0.458,0.198 10 false G135 1.115,1.771 2.156,2.313 1.042,0.542 10 false No. 1 Clearance Warning Buzzer 1.104,1.594 1.563,1.854 0.458,0.26 10 false G71 5.323,0.375 5.781,0.573 0.458,0.198 10 false 17 5.333,1.156 5.792,1.354 0.458,0.198 10 false 30 2.063,1.156 2.521,1.354 0.458,0.198 10 false 2 2.042,0.365 2.5,0.563 0.458,0.198 10 false 1 5.583,1.271 6.042,1.469 0.458,0.198 10 false EF 5.563,0.479 6.021,0.677 0.458,0.198 10 false CBZ 1.75,0.469 2.208,0.729 0.458,0.26 10 false Z+ 1.75,1.25 2.208,1.51 0.458,0.26 10 false Z-

PROCEDURE

1.PERFORM ACTIVE TEST USING GTS
a.

Check that the buzzer operates by performing the Active Test.

Body Electrical > Clearance Warning > Active Test
Tester Display Measurement Item Control Range Diagnostic Note
Front Buzzer No. 1 clearance warning buzzer OFF or ON Confirm that the vehicle is stopped and the ignition switch is ON
Body Electrical > Clearance Warning > Active Test
Tester Display
Front Buzzer
50004 438 1
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 G135 clearance warning ECU assembly connector.


b.

Disconnect the G71 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
G135-17 (CBZ) - G71-1 (Z+) Always Below 1 Ω
G135-30 (EF) - G71-2 (Z-) Always Below 1 Ω
G135-17 (CBZ) or G71-1 (Z+) - Body ground Always 10 kΩ or higher
G135-30 (EF) or G71-2 (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

3.REPLACE NO. 1 CLEARANCE WARNING BUZZER

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

Result:
Proceed to
NEXT



NEXT

4.PERFORM ACTIVE TEST USING GTS
4.PERFORM ACTIVE TEST USING GTS
a.

Check that the buzzer operates by performing the Active Test.

Body Electrical > Clearance Warning > Active Test
Tester Display Measurement Item Control Range Diagnostic Note
Front Buzzer No. 1 clearance warning buzzer OFF or ON Confirm that the vehicle is stopped and the ignition switch is ON
Body Electrical > Clearance Warning > Active Test
Tester Display
Front Buzzer
50004 438 1
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