Last Modified: 04-05-2023 6.11:8.1.0 Doc ID: RM1000000019046
Model Year Start: 2018 Model: Sienna Prod Date Range: [11/2017 -           ]
Title: PARK ASSIST / MONITORING: INTUITIVE PARKING ASSIST SYSTEM: Clearance Warning Buzzer Circuit; 2018 - 2020 MY Sienna [11/2017 -        ]

Clearance Warning Buzzer Circuit

DESCRIPTION

The No. 1 clearance warning buzzer sounds to alert the driver and the buzzed frequency changes depending on the distance to an obstacle.

WIRING DIAGRAM

PROCEDURE

1.

PERFORM ACTIVE TEST USING TECHSTREAM (NO. 1 CLEARANCE WARNING BUZZER)

(a) Select the Active Test, use the Techstream to generate a control command, and then check that the buzzer operates.

Intuitive P/A

Tester Display

Test Part

Control Range

Diagnostic Note

Buzzer

Clearance warning buzzer

Operate or Stop

Confirm that the vehicle is stopped and the ignition switch is ON

OK:

Clearance warning buzzer sounds.

OK

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

NG

2.

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

(a) Disconnect the D200 clearance warning ECU connector.

(b) Disconnect the D17 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

D200-14 (CBZ) - D17-1

Always

Below 1 Ω

D200-13 (EF) - D17-2

Always

Below 1 Ω

D200-14 (CBZ) or D17-1 - Body ground

Always

10 kΩ or higher

D200-13 (EF) or D17-2 - Body ground

Always

10 kΩ or higher

OK

REPLACE NO. 1 CLEARANCE WARNING BUZZER

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR