The front corner ultrasonic sensor (FR sensor) is installed on the front bumper. The clearance warning ECU assembly detects obstacles based on signals it receives from the front corner ultrasonic sensor (FR sensor). If an open circuit or other malfunction occurs in the front corner ultrasonic sensor (FR sensor), the front corner ultrasonic sensor (FR sensor) does not operate correctly.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area |
|---|---|---|---|
| C1AE496 | Ultrasonic Sensor (Front Right Corner) Component Internal Failure | Front corner ultrasonic sensor (FR sensor) failure | ·
Front corner ultrasonic sensor (FR sensor) ·
Clearance warning ECU assembly |
Perform registration after replacing or removing and installing the ultrasonic sensor or clearance warning ECU assembly.
If a DTC is detected again after the repair, turn the ignition switch to ON and turn the Toyota parking assist-sensor system on, and then clear the DTC.
Clear the DTCs.
| Proceed to |
|---|
| NEXT |
NEXT
Check for DTCs.
| Result | Proceed to |
|---|---|
| DTCs are not output | A |
| C1AE496 and C1AE487 are output | B |
| C1AE496 is output | C |
| None of the above conditions are met | D |
A
B
C
D
Replace the front corner ultrasonic sensor (FR sensor) with a known good one.
All of the sensors are interchangeable. To confirm whether a sensor is functioning normally, switch it with a known good sensor from the other end of the vehicle.
| Proceed to |
|---|
| NEXT |
NEXT
Clear the DTCs.
| Proceed to |
|---|
| NEXT |
NEXT
Check for DTCs.
| Result | Proceed to |
|---|---|
| DTCs are not output | A |
| C1AE496 is output | B |
| None of the above conditions are met | C |
A
B
C