Toyota Venza manuals

Toyota Venza: 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


PROCEDURE

1.

PERFORM ACTIVE TEST USING TECHSTREAM

(a) Connect the Techstream to the DLC3.

(b) Turn the engine switch on (IG).

(c) Turn the Techstream on.

(d) Enter the following menus: Body Electrical / Intuitive P/A / Active Test.

(e) Check that the buzzer operates by performing the Active Test.

Intuitive P/A

Tester Display

Test Part

Control Range

Diagnostic Note

Buzzer

No. 1 clearance warning buzzer

Operate or Stop

Confirm that the vehicle is stopped and the engine switch is on (IG)

OK:

The No. 1 clearance warning buzzer sounds.


OK

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE


NG

2.

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

(a) Disconnect the D80 No. 1 clearance warning buzzer connector.

(b) Disconnect the D79 clearance warning ECU assembly connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

D79-14 (BBZ) - D80-1 (Z+)

Always

Below 1 Ω

D79-13 (ER) - D80-2 (Z-)

Always

Below 1 Ω

D79-14 (BBZ) - Body ground

Always

10 kΩ or higher

D79-13 (ER) - Body ground

Always

10 kΩ or higher


NG

REPAIR OR REPLACE HARNESS OR CONNECTOR


OK

3.

REPLACE NO. 1 CLEARANCE WARNING BUZZER

(a) Replace the No. 1 clearance warning buzzer with a new or known good one (See page ).



NEXT

4.

PERFORM ACTIVE TEST USING TECHSTREAM

(a) Connect the Techstream to the DLC3.

(b) Turn the engine switch on (IG).

(c) Turn the Techstream on.

(d) Enter the following menus: Body Electrical / Intuitive P/A / Active Test.

(e) Check that the buzzer operates by performing the Active Test.

Intuitive P/A

Tester Display

Test Part

Control Range

Diagnostic Note

Buzzer

No. 1 clearance warning buzzer

Operate or Stop

Confirm that the vehicle is stopped and the engine switch is on (IG)

OK:

The No. 1 clearance warning buzzer sounds.


OK

END


NG

REPLACE CLEARANCE WARNING ECU ASSEMBLY

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