The rear corner ultrasonic sensor (RL sensor) is installed on the rear bumper. The clearance warning ECU assembly detects obstacles based on signals it receives from the rear corner ultrasonic sensor (RL sensor). If an open circuit or other malfunction occurs in the rear corner ultrasonic sensor (RL sensor), the rear corner ultrasonic sensor (RL sensor) does not operate correctly.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area |
|---|---|---|---|
| C1AE696 | Ultrasonic Sensor (Rear Left Corner) Component Internal Failure | Rear corner ultrasonic sensor (RL sensor) malfunction | ·
Rear corner ultrasonic sensor (RL 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 |
|---|---|
| C1AE696 is not output | A |
| C1AE696 is output | B |
| C1AE696 and C1AE687 are output | C |
A
B
C
Replace the rear corner ultrasonic sensor (RL 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 |
|---|---|
| C1AE696 is not output | A |
| C1AE696 is output | B |
A
B