The front center ultrasonic sensor (FRC sensor) is installed on the front bumper. The clearance warning ECU assembly detects obstacles based on signals it receives from the front center ultrasonic sensor (FRC sensor). If an open circuit or other malfunction occurs in the front center ultrasonic sensor (FRC sensor), the front center ultrasonic sensor (FRC sensor) does not operate correctly.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area |
|---|---|---|---|
| C1AE396 | Ultrasonic Sensor (Front Right Center) Component Internal Failure | Front center ultrasonic sensor (FRC sensor) failure | ·
Front center ultrasonic sensor (FRC sensor) ·
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.
Check for DTCs.
| Result | Proceed to |
|---|---|
| C1AE387 is not output | A |
| C1AE396 is output | B |
| C1AE396 and C1AE387 are output | C |
A
B
C
Replace the front center ultrasonic sensor (FRC 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 |
|---|---|
| C1AE396 is not output | A |
| C1AE396 is output | B |
A
B