Toyota Avalon (XX50) 2019-2022 Service & Repair Manual: ICS Detection Area Adjustment Incomplete (C1AF0)

DESCRIPTION

When ICS detection area adjustment is incomplete, the clearance warning ECU assembly stores DTC C1AF0.

CAUTION / NOTICE / HINT

NOTICE:

• After turning the engine switch off, waiting time may be required before disconnecting the cable from the negative (-) battery terminal. Therefore make sure to read the disconnecting the cable from the negative (-) battery terminal notices before proceeding with work.

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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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• When continuing with the inspection, confirm that the necessary procedures (adjustment, calibration, initialization or registration) have been completed before proceeding.

PROCEDURE

(a) Perform intelligent clearance sonar system registration.

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NEXT

(a) Using the Techstream, check for DTCs according to the prompts on the screen.

(b) Clear the DTCs according to the screen on the Techstream.

(c) Recheck for DTCs.

HINT:

If DTC C1AF0 is still output after performing intelligent clearance sonar system registration 3 times, replace the clearance warning ECU assembly.

A

REPLACE CLEARANCE WARNING ECU ASSEMBLY

B

USE SIMULATION METHOD TO CHECK