Lexus ES manuals

Lexus ES: CAN Communication Failure (Message Registry) (U1000)

DESCRIPTION

This DTC is stored when the rear television camera assembly judges that it has an internal CAN malfunction.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

U1000

CAN Communication Failure (Message Registry)

Can communication failure (message registry)

Rear television camera assembly

PROCEDURE

1.

CHECK DTC OUTPUT

(a) Clear the DTCs.

Chassis > Rear Camera > Clear DTCs

(b) Recheck for DTCs and check that no DTCs are output.

Chassis > Rear Camera > Trouble Codes

HINT:

  • If the DTC is not output again when rechecking for DTCs, it may have been stored due to a temporary CAN malfunction.
  • If DTC U1000 is stored frequently but is not output when rechecking for DTCs, attempt to reproduce the conditions when the malfunction occurred.

    Click here

Result

Proceed to

DTC U1000 is output

A

DTC U1000 is not output

B

A

REPLACE REAR TELEVISION CAMERA ASSEMBLY

B

USE SIMULATION METHOD TO CHECK

READ NEXT:

 Parking Support Alert System (for Gasoline Model)

 Buzzer does not Sound

WIRING DIAGRAM CAUTION / NOTICE / HINT NOTICE: When checking for DTCs, make sure that the blind spot monitor system is turned on. Inspect the fuses for circuits related to this system before per

 Front Left Sensor Malfunction (C1AE1)

DESCRIPTION The front corner ultrasonic sensor LH is installed to the front bumper. The clearance warning ECU assembly detects obstacles based on signals received from the front corner ultrasonic sens

SEE MORE:

 Check Bus 3 Lines for Short Circuit

DESCRIPTION There may be a short circuit between the CAN main bus lines and/or CAN branch lines when the resistance between terminals 6 (CA3H) and 21 (CA3L) of the central gateway ECU (network gateway ECU) is below 54 Ω. Symptom Trouble Area Resistance between terminals 6 (CA3H) and 21 (CA

 Removal

REMOVAL PROCEDURE 1. SECURE VEHICLE (a) Fully apply the parking brake and chock a wheel. CAUTION: Make sure to apply the parking brake and chock a wheel before performing this procedure. If the vehicle is not secure and the shift lever is moved to N, the vehicle may suddenly move, possibly resu

© 2016-2026 Copyright www.lexguide.net