Toyota Avalon Service & Repair Manual: Lost Communication with ECM / PCM "A" (U0100,U0126,U0140,U0163,U0233)

DESCRIPTION

These DTCs are stored if there is a malfunction in the CAN communication system connected to the television camera assembly.

HINT:

If CAN communication system DTCs are stored, they may also be stored in other systems.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

U0100

Lost Communication with ECM / PCM "A"

Lost Communication with ECM

CAN communication system

U0126

Lost Communication with Steering Angle Sensor Module

Lost communication with steering sensor

CAN communication system

U0140

Lost Communication with Body Control Module

Lost communication with main body ECU (multiplex network body ECU)

CAN communication system

U0163

Lost Communication with Navigation Control Module

Lost communication with radio and display receiver assembly

CAN communication system

U0233

Lost Communication with Blind Spot Monitor Master Module

Lost communication with blind spot monitor sensor RH

CAN communication system

PROCEDURE

1.

CHECK DTC OUTPUT

(a) Clear the DTCs.

Chassis > Parking Assist Camera > Clear DTCs

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

Chassis > Parking Assist Camera > Trouble Codes

HINT:

  • If CAN communication system DTCs are stored, they may also be stored in other systems.
  • If the CAN communication system has been inspected and repaired in other systems, the DTCs will not be output when rechecking for DTCs.
  • If these DTCs are output frequently, duplicate the conditions that cause the problem symptoms and perform the inspection again, even though the DTC was not output when rechecking for DTCs.

    Click here

Result

Proceed to

DTCs are output

A

No DTCs are output

B

A

GO TO CAN COMMUNICATION SYSTEM

B

USE SIMULATION METHOD TO CHECK

    Terminals Of Ecu

    CAN Communication Failure (Message Registry) (U1000)

    See More:

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