DTC C1AF3: Fr Sensor Initialization Incomplete [06/2018 - 09/2022]: Procedure
WARNING: This page is about a different car, the 2022 Lexus ES 300h, 2021 Lexus ES 300h, 2020 Lexus ES 300h, and 2019 Lexus ES 300h. However, it is still accessible from the selected car via links, so may be relevant.
- INITIALIZE FRONT CENTER ULTRASONIC SENSOR AND FRONT CORNER ULTRASONIC SENSOR
- Initialize the front center ultrasonic sensor and front corner ultrasonic sensor.
- w/o Parking Support Brake System: Refer to CALIBRATION [06/2018 - 08/2021] , or refer to CALIBRATION [08/2021 - 09/2022]
- w/ Parking Support Brake System: Refer to CALIBRATION [06/2018 - 08/2021] , or refer to CALIBRATION [08/2021 - 09/2022]
Result
Proceed to NEXT
Result:
NEXT
See step 2
- Initialize the front center ultrasonic sensor and front corner ultrasonic sensor.
- CHECK FOR DTC
- Using the Techstream, check for DTCs according to the prompts on the screen.
HINT:
After turning the power switch from off to on (IG), wait 10 seconds or more before checking for DTCs.
Body Electrical > Advanced Parking Guidance/ICS/Intuitive P/A > Trouble Codes
Result
Result Proceed to DTC C1AF3 is output A DTC C1AF3 is not output B HINT:
If DTC C1AF3 is still output after initializing the front center ultrasonic sensor and front corner ultrasonic sensor 3 times, replace the clearance warning ECU assembly.
Result:
A
REPLACE CLEARANCE WARNING ECU ASSEMBLY. Refer to REMOVAL [06/2018 - 08/2021] , or refer to REMOVAL [08/2021 - 09/2022]
Result:
B
END (FRONT SENSORS WERE NOT INITIALIZED)
- Using the Techstream, check for DTCs according to the prompts on the screen.