Last Modified: 01-30-2024 6.11:8.1.0 Doc ID: RM100000001HCH6
Model Year Start: 2019 Model: RAV4 HV Prod Date Range: [02/2019 -           ]
Title: PARK ASSIST / MONITORING: INTUITIVE PARKING ASSIST SYSTEM (for HV Model with Parking Support Brake System): No. 1 Clearance Warning Buzzer Circuit; 2019 - 2024 MY RAV4 HV [02/2019 -        ]

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

PROCEDURE

1.

PERFORM ACTIVE TEST USING TECHSTREAM

(a) Connect the Techstream to the DLC3.

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

(c) Turn the Techstream on.

(d) Enter the following menus: Body Electrical / Clearance Warning / Active Test.

(e) 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 power switch is on (IG)

Body Electrical > Clearance Warning > Active Test

Tester Display

Front Buzzer

OK:

The No. 1 clearance warning buzzer sounds.

OK

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE 2019 - 2020 MY RAV4 HV [02/2019 - 08/2020]; PARK ASSIST / MONITORING: INTUITIVE PARKING ASSIST SYSTEM (for HV Model with Parking Support Brake System): PROBLEM SYMPTOMS TABLE 2021 - 2024 MY RAV4 HV [08/2020 -        ]; PARK ASSIST / MONITORING: INTUITIVE PARKING ASSIST SYSTEM (for HV Model with Parking Support Brake System): PROBLEM SYMPTOMS TABLE

NG

2.

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

(a) Disconnect the G25*1 or H4*2 clearance warning ECU assembly connector.

  • *1: for TMMC Made
  • *2: for TMC Made

(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:

for TMMC Made:

Tester Connection

Condition

Specified Condition

G25-9 (CBZ) - G71-1 (Z+)

Always

Below 1 Ω

G25-8 (EF) - G71-2 (Z-)

Always

Below 1 Ω

G25-9 (CBZ) or G71-1 (Z+) - Body ground

Always

10 kΩ or higher

G25-8 (EF) or G71-2 (Z-) - Body ground

Always

10 kΩ or higher

for TMC Made:

Tester Connection

Condition

Specified Condition

H4-9 (CBZ) - G71-1 (Z+)

Always

Below 1 Ω

H4-8 (EF) - G71-2 (Z-)

Always

Below 1 Ω

H4-9 (CBZ) or G71-1 (Z+) - Body ground

Always

10 kΩ or higher

H4-8 (EF) or G71-2 (Z-) - 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.

Click here 2019 MY RAV4 RAV4 HV [02/2019 - 10/2019]; PARK ASSIST / MONITORING: CLEARANCE WARNING BUZZER (for Front Side): REMOVAL 2020 MY RAV4 RAV4 HV [10/2019 - 08/2020]; PARK ASSIST / MONITORING: CLEARANCE WARNING BUZZER (for Front Side): REMOVAL 2021 MY RAV4 RAV4 HV [08/2020 - 12/2021]; PARK ASSIST / MONITORING: CLEARANCE WARNING BUZZER (for Front Side): REMOVAL 2022 MY RAV4 RAV4 HV [12/2021 - 10/2022]; PARK ASSIST / MONITORING: CLEARANCE WARNING BUZZER (for Front Side): REMOVAL 2023 MY RAV4 RAV4 HV [10/2022 - 10/2023]; PARK ASSIST / MONITORING: CLEARANCE WARNING BUZZER (for Front Side): REMOVAL 2024 MY RAV4 RAV4 HV [10/2023 -        ]; PARK ASSIST / MONITORING: CLEARANCE WARNING BUZZER (for Front Side): REMOVAL

NEXT

4.

PERFORM ACTIVE TEST USING TECHSTREAM

(a) Connect the Techstream to the DLC3.

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

(c) Turn the Techstream on.

(d) Enter the following menus: Body Electrical / Clearance Warning / Active Test.

(e) 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 power switch is on (IG)

Body Electrical > Clearance Warning > Active Test

Tester Display

Front Buzzer

OK:

The No. 1 clearance warning buzzer sounds.

OK

END (NO. 1 CLEARANCE WARNING BUZZER WAS DEFECTIVE)

NG

REPLACE CLEARANCE WARNING ECU ASSEMBLY