Toyota Avalon (XX50) 2019-2022 Service & Repair Manual: Wheel Speed Sensor Malfunction (C164D)

DESCRIPTION

This DTC is stored when the clearance warning ECU assembly receives a wheel speed sensor (front speed sensor RH or front speed sensor LH, rear speed sensor RH or rear speed sensor LH) abnormality signal from the electronically controlled brake system via CAN communication.

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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PROCEDURE

(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 4 seconds or more before checking for DTCs.

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

(c) Recheck for DTCs.

HINT:

• DTC C164D is stored when a malfunction signal sent from the electronically controlled brake system is detected.
• If the malfunctioning part has been repaired or replaced before rechecking for DTCs, DTC C164D will not be output again.
• If DTC C164D is output frequently, duplicate the conditions that cause the problem symptoms and perform troubleshooting again, even though the DTC was not output when rechecking for DTCs.

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A

GO TO ELECTRONICALLY CONTROLLED BRAKE SYSTEM

B

USE SIMULATION METHOD TO CHECK