Ultrasonic Sensor: Inspection

INSPECT NO. 1 ULTRASONIC SENSOR

Measure the resistance of the sensor.

Standard resistance

TESTER CONNECTION SPECIFIED CONDITION CHART

Tester Connection	Condition	Specified Condition
1 (E) - 2 (S)	Always	900 +- 300 kΩ

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

Fig 1: Identifying No. 1 Ultrasonic Sensor Connector Terminals

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

INSPECT NO. 2 ULTRASONIC SENSOR

Measure the resistance of the sensor.

Standard resistance

TESTER CONNECTION SPECIFIED CONDITION CHART

Tester Connection	Condition	Specified Condition
1 (E) - 2 (S)	Always	900 +- 300 kΩ

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

Fig 2: Identifying No. 2 Ultrasonic Sensor Connector Terminals

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

INSPECT NO. 3 ULTRASONIC SENSOR

Measure the resistance of the sensor.

Standard resistance:

TESTER CONNECTION SPECIFIED CONDITION CHART

Tester Connection [Tester (+) - Tester (-)]

Condition

Specified Condition

3 (S) - 2 (E)

Always

40 +- 10 kΩ

2 (E) - 3 (S)

Always

40 +- 10 kΩ

1 (T) - 2 (E) ⁽¹⁾

Always

330 +- 100 kΩ

2 (E) - 1 (T) ⁽¹⁾

Always

1 MΩ or higher

NOTE:

⁽¹⁾	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