Lexus ES: Fr Sensor Initialization Incomplete (C1AF3)
DESCRIPTION
When it is judged that the front sensors have not been initialized, the clearance warning ECU assembly stores DTC C1AF3.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area |
|---|---|---|---|
| C1AF3 | Fr Sensor Initialization Incomplete | Front sensor not initialized |
|
CAUTION / NOTICE / HINT
NOTICE:
-
If DTC C1AF3 is output after performing repairs, turn the power switch on (IG) and turn the parking support alert system on to clear the DTC.
Click here
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After replacing an ultrasonic sensor or the clearance warning ECU assembly, perform the necessary procedures (adjustment, calibration, initialization or registration).
Click here
PROCEDURE
| 1. | INITIALIZE FRONT CENTER ULTRASONIC SENSOR AND FRONT CORNER ULTRASONIC SENSOR |
(a) Initialize the front center ultrasonic sensor and front corner ultrasonic sensor.
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w/o Parking Support Brake System: Click here
-
w/ Parking Support Brake System: Click here
|
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| 2. | CHECK FOR DTC |
(a) 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 | 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.
| A |  | REPLACE CLEARANCE WARNING ECU ASSEMBLY |
| B | | END (FRONT SENSORS WERE NOT INITIALIZED) |
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SEE MORE:
Removal
REMOVAL PROCEDURE 1. REMOVE FRONT WHEEL LH Click here 2. REMOVE FRONT WHEEL OPENING EXTENSION PAD LH HINT: Use the same procedure as for the RH side. Click here 3. REMOVE REAR FENDER SPLASH SHIELD SUB-ASSEMBLY LH HINT: Use the same procedure as for the RH side. Click here 4. REMOVE PIN HOLD CL
Precaution
PRECAUTION PRECAUTION FOR DISCONNECTING CABLE FROM NEGATIVE BATTERY TERMINAL NOTICE: When disconnecting the cable from the negative (-) battery terminal, initialize the following systems after the cable is reconnected. System Name See Procedure Lane Control System (for Gasoline Model)
