| Last Modified: 11-29-2007 | 1.6 J | |
| Service Category: Audio/Visual/Telematics | Section: Park Assist/Monitoring | |
| Model Year: 2008 | Model: Sequoia | Doc ID: RM000002BJ4005X |
| Title: PARK ASSIST / MONITORING: INTUITIVE PARKING ASSIST SYSTEM: DESCRIPTION (2008 Sequoia) | ||
|
Front Clearance Sonar Sensor RH 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
|
1. |
REPLACE FRONT CORNER NO. 1 ULTRASONIC SENSOR RH |
(a) Replace the front corner No. 1 ultrasonic sensor with a normally functioning sensor
.
|
|
2. |
CHECK HARNESS AND CONNECTOR (FRONT CORNER SENSOR RH - CLEARANCE WARNING ECU) |
|
(a) Disconnect the B1 front corner No. 1 ultrasonic sensor connector. |
(b) Disconnect the H43 clearance warning ECU connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
B1-1 (BI) - H43-9 (BOF) |
Always |
Below 1 Ω |
|
B1-3 (SI) - H43-7 (SOF) |
||
|
B1-5 (EI) - H43-23 (E1) |
||
|
B1-1 (BI) - Body ground |
Always |
10 kΩ or higher |
|
B1-3 (SI) - Body ground |
||
|
B1-5 (EI) - Body ground |
(d) Reconnect the front corner No. 1 ultrasonic sensor connector.
(e) Reconnect the clearance warning ECU connector.
|
|
|