| Last Modified: 11-29-2007 | 1.6 J | |
| Service Category: Audio/Visual/Telematics | Section: Park Assist/Monitoring | |
| Model Year: 2008 | Model: Sequoia | Doc ID: RM000002BJ9005X |
| Title: PARK ASSIST / MONITORING: INTUITIVE PARKING ASSIST SYSTEM: DESCRIPTION (2008 Sequoia) | ||
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Back 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 BACK NO. 2 ULTRASONIC SENSOR LH |
(a) Replace the back No. 2 ultrasonic sensor with a normally functioning sensor
.
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2. |
CHECK HARNESS AND CONNECTOR (BACK SENSOR LH - BACK SENSOR RH) |
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(a) Disconnect the R4 and R3 back No. 2 ultrasonic sensor connectors. |
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Condition |
Condition |
Specified Condition |
|---|---|---|
|
R4-1 (BI) - R3-2 (BO) |
Always |
Below 1 Ω |
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R4-3 (SI) - R3-4 (SO) |
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R4-5 (EI) - R3-6 (EO) |
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R4-1 (BI) - Body ground |
Always |
10 kΩ or higher |
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R4-3 (SI) - Body ground |
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R4-5 (EI) - Body ground |
(c) Reconnect the back No. 2 ultrasonic sensor connectors.
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