Toyota Parking Assist-Sensor System Front Clearance Sonar Sensor Lh Circuit
DESCRIPTION
WIRING DIAGRAM
INSPECTION PROCEDURE
CHECK HARNESS AND CONNECTOR (CLEARANCE WARNING ECU - FRONT LEFT SENSOR)
INSPECT NO. 1 ULTRASONIC SENSOR (FRONT LEFT SENSOR)
TOYOTA PARKING ASSIST-SENSOR SYSTEM - Front Clearance Sonar Sensor LH Circuit |
DESCRIPTION
The No. 1 ultrasonic sensor (front left sensor) is installed on the front bumper.The clearance warning ECU detects obstacles based on signals received from the front left sensor. If the front left sensor circuit has an open, short or other malfunction, it will not function normally.
WIRING DIAGRAM
INSPECTION PROCEDURE
| 1.CHECK HARNESS AND CONNECTOR (CLEARANCE WARNING ECU - FRONT LEFT SENSOR) |
Disconnect the S17 connector from the clearance warning ECU.
Disconnect the i1 connector from the No. 1 ultrasonic sensor (front left sensor).
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
Tester Connection
| Condition
| Specified Condition
|
S17-29 (L3) - i1-1 (S)
| Always
| Below 1 Ω
|
S17-30 (L4) - i1-2 (E)
| Always
| Below 1 Ω
|
S17-29 (L3) - Body ground
| Always
| 10 kΩ or higher
|
S17-30 (L4) - Body ground
| Always
| 10 kΩ or higher
|
| | REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
| 2.INSPECT NO. 1 ULTRASONIC SENSOR (FRONT LEFT SENSOR) |
Remove the No. 1 ultrasonic sensor (front left sensor) (CAMRY_ACV40 RM000001PYF010X.html).
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
Tester Connection
| Condition
| Specified Condition
|
1 (S) - 2 (E)
| Always
| 8 to 12 kΩ
|
