Rear Clearance Sonar Sensor LH Circuit

PARK ASSIST / MONITORING: INTUITIVE PARKING ASSIST SYSTEM: Rear Clearance Sonar Sensor LH Circuit

Rear Clearance Sonar Sensor LH Circuit

DESCRIPTION

An ultrasonic sensor consists of a sensor portion that transmits and receives ultrasonic waves and a pre-amplifier that amplifies them. The ultrasonic sensor outputs the ultrasonic waves and sends the received signals to the clearance warning ECU.

WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. INSPECT NO. 1 ULTRASONIC SENSOR





(a) Remove the No. 1 ultrasonic sensor.
(b) Measure the resistance according to the value(s) in the table below.
Standard resistance:






NG -- REPLACE NO. 1 ULTRASONIC SENSOR
OK -- Continue to next step.
2. CHECK HARNESS AND CONNECTOR (CLEARANCE WARNING ECU - NO. 1 ULTRASONIC SENSOR)





(a) Disconnect the C9 connector from the clearance warning ECU.





(b) Disconnect the U4 connector from the No. 1 ultrasonic sensor.
(c) Measure the resistance according to the value(s) in the table below.
Standard resistance:






NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE