Toyota Parking Assist-Sensor System (W/O Multi-Display) Back Sonar Sensor Lh Circuit
DESCRIPTION
WIRING DIAGRAM
INSPECTION PROCEDURE
INSPECT NO. 1 ULTRASONIC SENSOR (REAR CENTER SENSOR LH)
CHECK HARNESS AND CONNECTOR (REAR CENTER SENSOR LH - REAR CORNER SENSOR LH)
TOYOTA PARKING ASSIST-SENSOR SYSTEM (w/o Multi-display) - 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 obstacle and sends the distance value as a signal to the clearance warning ECU.
WIRING DIAGRAM
INSPECTION PROCEDURE
| 1.INSPECT NO. 1 ULTRASONIC SENSOR (REAR CENTER SENSOR LH) |
Remove the No. 1 ultrasonic sensor (rear center sensor LH) (LandCruiser RM00000470F01FX.html).
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
Tester Connection
| Condition
| Specified Condition
|
1 (BI) - 5 (EI)
| Always
| 10 kΩ or higher
|
1 (BI) - 2 (BO)
| Always
| 10 kΩ or higher
|
3 (SI) - 4 (SO)
| Always
| Below 1 Ω
|
5 (EI) - 6 (EO)
| Always
| Below 1 Ω
|
| 2.CHECK HARNESS AND CONNECTOR (REAR CENTER SENSOR LH - REAR CORNER SENSOR LH) |
Disconnect the V4 No. 1 ultrasonic sensor (rear center sensor LH) connector.
Disconnect the V5 No. 1 ultrasonic sensor (rear corner sensor LH) connector.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
Tester Connection
| Condition
| Specified Condition
|
V4-1 (BI) - V5-2 (BO)
| Always
| Below 1 Ω
|
V4-3 (SI) - V5-4 (SO)
| Always
| Below 1 Ω
|
V4-5 (EI) - V5-6 (EO)
| Always
| Below 1 Ω
|
V4-1 (BI) - Body ground
| Always
| 10 kΩ or higher
|
V4-3 (SI) - Body ground
| Always
| 10 kΩ or higher
|
V4-5 (EI) - Body ground
| Always
| 10 kΩ or higher
|
| | REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
