The rear corner ultrasonic sensor RH is installed on the rear bumper. The clearance warning ECU assembly detects obstacles based on signals it receives from the rear corner ultrasonic sensor RH. If an open circuit or other malfunction occurs in the rear corner ultrasonic sensor RH, the rear corner ultrasonic sensor RH does not operate correctly.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area |
|---|---|---|---|
| C1AE996 | Ultrasonic Sensor (Rear Right Corner) Component Internal Failure | Rear corner ultrasonic sensor RH malfunction | ·
Rear corner ultrasonic sensor RH ·
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.
According to the display on the GTS, check for DTCs.
According to the display on the GTS, clear the DTCs.
Recheck for DTCs.
| Result | Proceed to |
|---|---|
| No DTC is output | A |
| "C1AE996" is output | B |
| "C1AE996" and "C1AE987" are output | C |
A
B
C
Replace the rear corner ultrasonic sensor RH with a new or normally functioning one.
To check if the ultrasonic sensor is functioning correctly, replace it with another ultrasonic sensor.
| Proceed to |
|---|
| NEXT |
NEXT
According to the display on the GTS, check for DTCs.
According to the display on the GTS, clear the DTCs.
Recheck for DTCs.
| Result | Proceed to |
|---|---|
| No DTC is output | A |
| "C1AE996" is output | B |
A
B