Toyota 4Runner: 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 between the vehicle and the obstacle, and sends the distance value as a signal to the clearance warning ECU assembly.
WIRING DIAGRAM
PROCEDURE
|
1. |
INSPECT NO. 1 ULTRASONIC SENSOR (REAR CENTER SENSOR LH) |
(a) Remove the No. 1 ultrasonic sensor (rear center sensor LH) (See page
.gif)
).
(b) Inspect the No. 1 ultrasonic sensor (rear center sensor LH) (See page
).
| NG | .gif) |
REPLACE NO. 1 ULTRASONIC SENSOR (REAR CENTER SENSOR LH) |
|
.gif)
|
2. |
CHECK HARNESS AND CONNECTOR (REAR CENTER SENSOR LH - CLEARANCE WARNING ECU ASSEMBLY) |
(a) Disconnect the P3 No. 1 ultrasonic sensor (rear center sensor LH) 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 |
|---|---|---|
|
P3-1 (E) - F95-15 (E4) |
Always |
Below 1 Ω |
|
P3-2 (S) - F95-16 (S4) |
Always |
Below 1 Ω |
|
P3-1 (E) - Body ground |
Always |
10 kΩ or higher |
|
P3-2 (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 |
Taillight Relay Circuit
DESCRIPTION
This is the power source circuit of the clearance warning ECU assembly.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
Inspect the fuses for circuits related to this system before p ...
Back Sonar Sensor RH Circuit
DESCRIPTION
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 t ...
Other materials about Toyota 4Runner:
Disassembly
DISASSEMBLY
PROCEDURE
1. REMOVE RADIATOR GRILLE
2. REMOVE NO. 2 ENGINE ROOM WIRE
(a) Disconnect each connector.
(b) Detach the 9 clamps to remove the No. 2 engine room wire.
3. REMOVE NO. 1 ULTRASONIC SENSOR
4. REMOVE ULTRASONIC SENSOR CLIP
...
Detection range of the sensors
1. Approximately 1.6 ft. (50 cm) 2. Approximately 4.9 ft. (150 cm)
The diagram shows the detection range of the sensors. Note that the sensors
cannot detect obstacles that are extremely close to the vehicle.
The range of the sensors may change depending ...
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