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 | .gif) |
PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE |
|
.gif)
|
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 |
|
|
3. |
REPLACE NO. 1 CLEARANCE WARNING BUZZER |
(a) Replace the No. 1 clearance warning buzzer with a new or known good one (See
page .gif)
).
|
|
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 |
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:
Terminals Of Ecu
TERMINALS OF ECU
1. CHECK POWER MANAGEMENT CONTROL ECU
(a) Disconnect the D42 and D43 connectors.
(b) Measure the voltage and resistance according to the value(s) in the table
below.
Tester Connection
Wiring Color
Termi ...
Noise Occurs
PROCEDURE
1.
NOISE CONDITION
(a) Check from which direction the noise comes (front left or right, or rear
left or right).
OK:
The location of the noise source can be determined.
NG
GO TO STEP 3
...
How To Proceed With Troubleshooting
CAUTION / NOTICE / HINT
HINT:
Use the following procedure to troubleshoot the audio and visual system.
*: Use the Techstream.
PROCEDURE
1.
VEHICLE BROUGHT TO WORKSHOP
NEXT
...
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