Toyota Tundra Service Manual: Front Clearance Sonar Sensor LH Circuit

DESCRIPTION

The No. 1 ultrasonic sensor sends and receives ultrasonic waves. Based on the received wave, the sensor calculates the approximate distance value between the vehicle and the obstacle, and sends the distance value as a signal to the clearance warning ECU assembly.

WIRING DIAGRAM

PROCEDURE

(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

(a) Disconnect the C1 No. 1 ultrasonic sensor (front corner sensor LH) connector.

(b) Disconnect the B1 No. 1 ultrasonic sensor (front corner sensor RH) connector.

(c) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

OK

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR