Toyota Venza: Clearance Warning Buzzer Circuit

Toyota Venza Service Manual / Park Assist / Monitoring / Intuitive Parking Assist 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

PROCEDURE

1.	PERFORM ACTIVE TEST USING TECHSTREAM

(a) Connect the Techstream to the DLC3.

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

(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.

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

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.

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

REPAIR OR REPLACE HARNESS OR CONNECTOR

3.	REPLACE NO. 1 CLEARANCE WARNING BUZZER

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

4.	PERFORM ACTIVE TEST USING TECHSTREAM

(a) Connect the Techstream to the DLC3.

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

(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.

END

REPLACE CLEARANCE WARNING ECU ASSEMBLY

Clearance Sonar Main Switch Circuit

DESCRIPTION The back sonar or clearance sonar switch assembly is installed at the base of the driver side of the instrument panel. When the clearance sonar main switch is turned on, an on signal i ...

Clearance Warning ECU Power Source Circuit

DESCRIPTION This circuit provides power to operate the clearance warning ECU assembly. WIRING DIAGRAM CAUTION / NOTICE / HINT NOTICE: Inspect the fuses for circuits related to this system befor ...

Other materials about Toyota Venza:

Front Passenger Side Door Entry Lock Function does not Operate
DESCRIPTION If the front passenger door entry unlock function operates normally, but its entry lock function does not, this means that the request code from the front passenger door is being output normally. In this case, a malfunction in the lock sensor ...

Terminals Of Ecu
TERMINALS OF ECU 1. CHECK MAIN BODY ECU (DRIVER SIDE JUNCTION BLOCK ASSEMBLY) (a) Disconnect the 2F and 2C driver side junction block connectors. (b) Disconnect the D50 and D51 main body ECU connectors. (c) Measure the resistance and voltage according to ...

Skid Control ECU Communication Stop Mode
DESCRIPTION Detection Item Symptom Trouble Area Skid Control ECU Communication Stop Mode "ABS/VSC/TRAC" is not displayed on "CAN Bus Check" screen of the Techstr ...