Toyota 4Runner: Clearance Warning Buzzer Circuit

Toyota 4Runner Service Manual / Audio / Visual / Telematics / Park Assist / Monitoring / Intuitive Parking Assist System / Clearance Warning Buzzer Circuit

DESCRIPTION

The clearance warning buzzer sounds to alert the driver. The sounding pattern changes depending on the distance to an obstacle.

WIRING DIAGRAM

PROCEDURE

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

(a) Disconnect the F95 clearance warning ECU assembly connector.

(b) Disconnect the F97 No. 1 clearance warning buzzer connector.

Standard Resistance:

Tester Connection	Condition	Specified Condition
F95-19 (CBZ) - F97-1 (Z+)	Always	Below 1 Ω
F95-20 (FF) - F97-2 (Z-)	Always	Below 1 Ω
F95-19 (CBZ) - Body ground	Always	10 kΩ or higher
F95-20 (FF) - Body ground	Always	10 kΩ or higher

REPAIR OR REPLACE HARNESS OR CONNECTOR

2.	CHECK NO. 1 CLEARANCE WARNING BUZZER

(a) Temporarily replace the No. 1 clearance warning buzzer with a new or normally functioning one (See page ).

(b) Check that the clearance warning buzzer sounds properly when the intuitive parking assist system detects an obstacle.

OK:

Buzzer sounds properly.

END (NO. 1 CLEARANCE SONAR BUZZER IS DEFECTIVE)

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

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