LEXUS Park Assist System: Inspection

INSPECT ULTRASONIC SENSOR

CONNECTOR TERMINALS SPECIFIED CONDITION

Tester connection	Condition	Specified condition
1 - 2	Constant	10kΩ +/- 2kΩ

If resistance is not as specified, replace ultrasonic sensor.

Fig 1: Identifying Ultrasonic Sensor Connector Terminals

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

INSPECT ULTRASONIC SENSOR SWITCH CONTINUITY

CONNECTOR TERMINALS SPECIFIED CONDITION

Switch position	Condition	Specified condition
ON	3 - 4	No continuity
OFF	3 - 4	Continuity

If resistance is not as specified, replace the switch.

Fig 2: Identifying Ultrasonic Sensor Switch Connector Terminals

INSPECT ULTRASONIC SENSOR
Connect the positive (+) lead from the battery to terminal 1 and the negative (-) lead to terminal 2, and check that the buzzer sounds.

Fig 3: Inspecting Ultrasonic Sensor
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002