Toyota Avalon Service & Repair Manual: Rr Sensor Initialization Incomplete (C1AF4)

Toyota Avalon Service & Repair Manual / Audio, Visual, Telematics / Park Assist / Monitoring / Intelligent Clearance Sonar System(for Gasoline Model) / Rr Sensor Initialization Incomplete (C1AF4)

DESCRIPTION

When it is judged that the rear sensors have not been initialized, the clearance warning ECU assembly stores DTC C1AF4.

DTC No.	Detection Item	DTC Detection Condition	Trouble Area
C1AF4	Rr Sensor Initialization Incomplete	Rear sensor not initialized	Initialize rear sensor Clearance warning ECU assembly

CAUTION / NOTICE / HINT

NOTICE:

If DTC C1AF4 is output after performing repairs, turn the engine switch on (IG) and turn the intelligent clearance sonar system on to clear the DTC.
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After replacing an ultrasonic sensor or the clearance warning ECU assembly, perform the necessary procedures (adjustment, calibration, initialization or registration).
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PROCEDURE

1.	INITIALIZE REAR CENTER ULTRASONIC SENSOR AND REAR CORNER ULTRASONIC SENSOR

(a) Initialize the rear center ultrasonic sensor and rear corner ultrasonic sensor.

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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 engine 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 C1AF4 is output	A
DTC C1AF4 is not output	B

HINT:

if DTC C1AF4 is still output after initializing the rear center ultrasonic sensor and rear corner ultrasonic sensor 3 times, replace the clearance warning ECU assembly.

REPLACE CLEARANCE WARNING ECU ASSEMBLY

END (REAR SENSORS WERE NOT INITIALIZED)

Fr Sensor Initialization Incomplete (C1AF3)

RCTB Sensor (C1AF7)

See More:

Toyota Avalon Owners Manual > Steps to take in an emergency: If a warning message is displayed
The multi-information display shows warnings of system malfunctions, incorrectly performed operations, and messages that indicate a need for maintenance. When a message is shown, perform the correction procedure appropriate to the message. Master warning light The master warning light also comes on ...