Toyota Avalon (XX50) 2019-2022 Service & Repair Manual: Vehicle Information Unmatched (C168D)

DESCRIPTION

If the vehicle information stored in the main body ECU (multiplex network body ECU) which is sent via CAN communication during the clearance warning ECU assembly self-diagnosis does not match that of clearance warning ECU assembly, DTC C168D is stored.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

C168D

Vehicle Information Unmatched

Vehicle information does not match

  • Steering sensor steering angle neutral point memorization incomplete
  • Clearance warning ECU assembly

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.

    Click here

  • After replacing an ultrasonic sensor or the clearance warning ECU assembly, perform the necessary procedures (adjustment, calibration, initialization or registration).

    Click here

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

PROCEDURE

1.

REGISTER VEHICLE INFORMATION

(a) Perform the following procedure to register the vehicle information.

Click here

NEXT

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 4 seconds or more before checking for DTCs.

Body Electrical > Advanced Parking Guidance/ICS/Intuitive P/A > Trouble Codes

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

Body Electrical > Advanced Parking Guidance/ICS/Intuitive P/A > Clear DTCs

(c) Recheck for DTCs.

Body Electrical > Advanced Parking Guidance/ICS/Intuitive P/A > Trouble Codes

HINT:

If DTC C168D is still output after registering the vehicle information 3 times, replace the clearance warning ECU assembly.

Result

Proceed to

DTC C168D is output

A

DTC C168D is not output

B

A

REPLACE CLEARANCE WARNING ECU ASSEMBLY

B

USE SIMULATION METHOD TO CHECK

    Brake Hydraulic Pressure Malfunction (C164F)

    ECU Malfunction (C1611)

    See More:

    Toyota Avalon (XX50) 2019-2022 Service & Repair Manual > Headup Display System(for Gasoline Model): 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 Departure Alert System (w/ Steering Control) Intel ...

    Toyota Avalon (XX50) 2019-2022 Owners Manual

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