Front Clearance Sonar Sensor RH Circuit
The ultrasonic sensor sends and receives ultrasonic waves. Based on the received wave, the sensor calculates the approximate distance between the vehicle and the obstacle, and sends the distance value as a signal to the clearance warning ECU assembly.
WIRING DIAGRAM
PROCEDURE
REPLACE NO. 1 ULTRASONIC SENSOR (FRONT CORNER SENSOR RH)
(a) Remove the No. 1 ultrasonic sensor (front corner sensor RH) (See page .gif)
).
(b) Inspect the No. 1 ultrasonic sensor (front corner sensor RH) (See page ).
| NG | .gif) | REPLACE NO. 1 ULTRASONIC SENSOR (FRONT CORNER SENSOR RH) |
|
.gif)
CHECK HARNESS AND CONNECTOR (FRONT CORNER SENSOR RH - CLEARANCE WARNING ECU ASSEMBLY)
(a) Disconnect the E1 No. 1 ultrasonic sensor (front corner sensor RH) connector.
(b) Disconnect the F95 clearance warning ECU assembly connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection | Condition | Specified Condition |
|---|---|---|
E1-1 (E) - F95-33 (E5) |
Always |
Below 1 Ω |
E1-2 (S) - F95-34 (S5) |
Always |
Below 1 Ω |
E1-1 (E) - Body ground |
Always |
10 kΩ or higher |
E1-2 (S) - Body ground |
Always |
10 kΩ or higher |
| OK | | PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE |
| NG | | REPAIR OR REPLACE HARNESS OR CONNECTOR |
Test yourself
A quick Toyota 4Runner quiz: every answer comes with an explanation and a link to the manual page.