| Last Modified: 11-29-2007 | 1.6 J | |
| Service Category: Audio/Visual/Telematics | Section: Park Assist/Monitoring | |
| Model Year: 2008 | Model: Sequoia | Doc ID: RM000002BJ6005X |
| Title: PARK ASSIST / MONITORING: INTUITIVE PARKING ASSIST SYSTEM: DESCRIPTION (2008 Sequoia) | ||
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Rear Clearance Sonar Sensor LH Circuit |
DESCRIPTION
The ultrasonic sensor sends and receives ultrasonic waves. Based on the received wave, the sensor calculates the approximate distance value between the vehicle and the obstacle, and sends the distance value as a signal to the clearance warning ECU.
WIRING DIAGRAM
INSPECTION PROCEDURE
PROCEDURE
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1. |
REPLACE REAR CORNER NO. 1 ULTRASONIC SENSOR LH |
(a) Replace the rear corner No. 1 ultrasonic sensor with a normally functioning sensor
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2. |
CHECK HARNESS AND CONNECTOR (REAR CORNER SENSOR LH - BACK SENSOR LH) |
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(a) Disconnect the R1 rear corner No. 1 ultrasonic sensor connector. |
(b) Disconnect the R4 back No. 2 ultrasonic sensor connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
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R1-1 (BI) - R4-2 (BO) |
Always |
Below 1 Ω |
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R1-3 (SI) - R4-4 (SO) |
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R1-5 (EI) - R4-6 (EO) |
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R1-1 (BI) - Body ground |
Always |
10 kΩ or higher |
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R1-3 (SI) - Body ground |
||
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R1-5 (EI) - Body ground |
(d) Reconnect the rear corner No. 1 ultrasonic sensor connector.
(e) Reconnect the back No. 2 ultrasonic sensor connector.
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