RM35X0E _56 Audio / Visual / Telematics _079315 PARK ASSIST / MONITORING _0385761 TOYOTA PARKING ASSIST-SENSOR SYSTEM C

PARK ASSIST / MONITORING  TOYOTA PARKING ASSIST-SENSOR SYSTEM  C1AE1  Front Left Sensor Malfunction  


DESCRIPTION

The front corner ultrasonic sensor (FL sensor) is installed on the front bumper. The clearance warning ECU assembly detects obstacles based on signals received from the front corner ultrasonic sensor (FL sensor). If the front corner ultrasonic sensor (FL sensor) has an open circuit or other malfunction, it will not function normally.

DTC No. Detection Item DTC Detection Condition Trouble Area
C1AE1 Front Left Sensor Malfunction A malfunction of the front corner ultrasonic sensor (FL sensor).
·

Front corner ultrasonic sensor (FL sensor)

·

Harness or connector

·

Clearance warning ECU assembly



WIRING DIAGRAM

E329174E31
2.021,0.469 2.177,0.667 0.156,0.198 10 false 2 2.021,1.073 2.177,1.271 0.156,0.198 10 false 1 4.927,0.469 5.24,0.667 0.313,0.198 10 false 21 4.938,1.104 5.25,1.302 0.313,0.198 10 false 22 5.198,0.563 5.51,0.76 0.313,0.198 10 false S6 5.188,1.208 5.5,1.406 0.313,0.198 10 false E6 1.792,0.583 1.948,0.781 0.156,0.198 10 false S 1.802,1.208 1.958,1.406 0.156,0.198 10 false E 0.833,1.563 1.146,1.76 0.313,0.198 10 false B2 0.833,1.729 2.75,2.104 1.917,0.375 10 false Front Corner Ultrasonic Sensor (FL Sensor) 4.917,1.552 5.375,1.75 0.458,0.198 10 false N48 4.917,1.698 6.208,2.042 1.292,0.344 10 false Clearance Warning ECU Assembly

CAUTION / NOTICE / HINT

NOTICE:

If DTCs are output after repairs, turn the ignition switch to ON and the TOYOTA parking assist-sensor system on. Then clear the DTCs.

Click hereAudio / Visual / Telematics>PARK ASSIST / MONITORING>TOYOTA PARKING ASSIST-SENSOR SYSTEM>DTC CHECK / CLEAR


PROCEDURE

1.INSPECT FRONT CORNER ULTRASONIC SENSOR (FL SENSOR)
a.

Remove the front corner ultrasonic sensor (FL sensor).

Click hereAudio / Visual / Telematics>PARK ASSIST / MONITORING>ULTRASONIC SENSOR (for Front)>REMOVAL


b.

Inspect the front corner ultrasonic sensor (FL sensor).

Click hereAudio / Visual / Telematics>PARK ASSIST / MONITORING>ULTRASONIC SENSOR (for Front)>INSPECTION


Result:
Proceed to
OK
NG



OK

2.CHECK HARNESS AND CONNECTOR (FRONT CORNER ULTRASONIC SENSOR [FL SENSOR] - CLEARANCE WARNING ECU ASSEMBLY)

NG

REPLACE FRONT CORNER ULTRASONIC SENSOR (FL SENSOR)

Click hereAudio / Visual / Telematics>PARK ASSIST / MONITORING>ULTRASONIC SENSOR (for Front)>REMOVAL


2.CHECK HARNESS AND CONNECTOR (FRONT CORNER ULTRASONIC SENSOR [FL SENSOR] - CLEARANCE WARNING ECU ASSEMBLY)
a.

Disconnect the B2 front corner ultrasonic sensor (FL sensor) connector.


b.

Disconnect the N48 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
B2-2 (S) - N48-21 (S6) Always Below 1 Ω
B2-1 (E) - N48-22 (E6) Always Below 1 Ω
B2-2 (S) or N48-21 (S6) - Body ground Always 10 kΩ or higher
B2-1 (E) or N48-22 (E6) - Body ground Always 10 kΩ or higher



Result:
Proceed to
OK
NG



OK

REPLACE CLEARANCE WARNING ECU ASSEMBLY

Click hereAudio / Visual / Telematics>PARK ASSIST / MONITORING>CLEARANCE WARNING ECU>REMOVAL


NG

REPAIR OR REPLACE HARNESS OR CONNECTOR