Toyota 4Runner manuals

Toyota 4Runner: Front Clearance Sonar Sensor LH Circuit

DESCRIPTION

The ultrasonic sensor sends and receives ultrasonic waves. Based on the received wave, the sensor calculates the approximate distance between the vehicle and the obstacle, and sends the distance value as a signal to the clearance warning ECU assembly.

WIRING DIAGRAM


PROCEDURE

1.

INSPECT NO. 1 ULTRASONIC SENSOR (FRONT CORNER SENSOR LH)

(a) Remove the No. 1 ultrasonic sensor (front corner sensor LH) (See page ).


(b) Inspect the No. 1 ultrasonic sensor (front corner sensor LH) (See page ).



NG

REPLACE NO. 1 ULTRASONIC SENSOR (FRONT CORNER SENSOR LH)


OK

2.

CHECK HARNESS AND CONNECTOR (FRONT CORNER SENSOR LH - CLEARANCE WARNING ECU ASSEMBLY)

(a) Disconnect the E2 No. 1 ultrasonic sensor (front corner sensor LH) connector.

(b) Disconnect the F95 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

E2-1 (E) - F95-12 (E6)

Always

Below 1 Ω

E2-2 (S) - F95-13 (S6)

Always

Below 1 Ω

E2-1 (E) - Body ground

Always

10 kΩ or higher

E2-2 (S) - Body ground

Always

10 kΩ or higher


OK

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE


NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

Back Sonar Sensor RH Circuit
DESCRIPTION The ultrasonic sensor sends and receives ultrasonic waves. Based on the received wave, the sensor calculates the approximate distance between the vehicle and the obstacle, and sends t ...

Front Clearance Sonar Sensor RH Circuit
DESCRIPTION The ultrasonic sensor sends and receives ultrasonic waves. Based on the received wave, the sensor calculates the approximate distance between the vehicle and the obstacle, and sends t ...

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