Ultrasonic Sensor: Inspection

INSPECT NO. 1 ULTRASONIC SENSOR

Measure the resistance of the sensor.

Standard resistance

TESTER CONNECTION SPECIFIED CONDITION

Tester Connection	Condition	Specified Condition
1 (E) - 2 (S)	Always	600 to 1,200 kΩ

Fig 1: Identifying No. 1 Ultrasonic Sensor Connector Terminals

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NOTE: Set the tester to the 100 kΩ range before performing the measurement.

If the result is not as specified, replace the ultrasonic sensor.

INSPECT NO. 2 ULTRASONIC SENSOR

Measure the resistance of the sensor.

Standard resistance

TESTER CONNECTION SPECIFIED CONDITION

Tester Connection	Condition	Specified Condition
1 (E) - 2 (S)	Always	600 to 1,200 kΩ

Fig 2: Identifying No. 2 Ultrasonic Sensor Connector Terminals

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NOTE: Set the tester to the 100 kΩ range before performing the measurement.

If the result is not as specified, replace the ultrasonic sensor.

INSPECT NO. 3 ULTRASONIC SENSOR

Measure the resistance of the sensor.

Standard resistance:

TESTER CONNECTION SPECIFIED CONDITION

Tester Connection [Tester (+) - Tester (-)]	Condition	Specified Condition
3 (S) - 2 (E)	Always	30 to 50 kΩ
2 (E) - 3 (S)	Always	30 to 50 kΩ
1 (T) - 2 (E)*	Always	230 to 430 kΩ
2 (E) - 1 (T)*	Always	1 MΩ or higher
NOTE: Set the tester to the 100 kΩ range before performing the measurement. *: Measurement values may vary depending on the tester used. If results seem inaccurate, reverse the polarity (+-) and measure again.

Fig 3: Identifying No. 3 Ultrasonic Sensor Connector Terminals

If the result is not as specified, replace the ultrasonic sensor.