The rear center ultrasonic sensor LH is installed to the rear bumper. The clearance warning ECU assembly detects obstacles based on signals received from the rear center ultrasonic sensor LH. If the rear center ultrasonic sensor LH has an open circuit or other malfunction, it will not function normally.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area | DTC Output from | Priority |
|---|---|---|---|---|---|
| C1AE796 | Ultrasonic Sensor (Rear Left Center) Component Internal Failure | Rear center ultrasonic sensor LH malfunction | ·
Rear center ultrasonic sensor LH ·
Clearance warning ECU assembly |
Clearance Warning | B |
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 |
| C1AE796 and C1AE787 are output | B |
| C1AE796 is output | C |
A
B
C
Replace the rear center ultrasonic sensor LH 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
Clear the DTCs.
| Proceed to |
|---|
| NEXT |
NEXT
Check for DTCs.
| Result | Proceed to |
|---|---|
| DTCs are not output | A |
| C1AE796 is output | B |
A
B