Back Sonar Sensor LH Circuit

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

Back 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.
Standard resistance:





(c) Reinstall the sensor.
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 E31 clearance warning ECU connector.
(b) Disconnect the N1 connector from the No. 1 ultrasonic sensor.
(c) Measure the resistance.
Standard resistance:





(d) Reconnect the ECU connector.
(e) Reconnect the sensor connector.
NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE