AIR CONDITIONING SYSTEM, Diagnostic DTC:U0100,U0142 and U0155

DTC Code DTC Name
U0100 Lost Communication with ECM
U0142 Lost Communication with Main Body ECU
U0155 Lost Communication with Combination Meter

DESCRIPTION

The air conditioning amplifier communicates with the ECM, main body ECU (multiplex network body ECU) and combination meter through the CAN communication system.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

Memory

Note

U0100

Lost Communication with ECM

Lost communication with the ECM.

  • CAN communication system

  • ECM

-

-

U0142

Lost Communication with Main Body ECU

Lost communication with the main body ECU.

  • CAN communication system

  • Main body ECU (multiplex network body ECU)

-

-

U0155

Lost Communication with Combination Meter

Lost communication with the combination meter.

  • CAN communication system

  • Combination meter assembly

-

-

PROCEDURE

  1. CHECK FOR DTC (CAN COMMUNICATION SYSTEM)

    1. Use the intelligent tester to check if the CAN communication system is functioning normally

      Click here

      Body Electrical > Air Conditioner > Trouble Codes

    Result

    Result

    Proceed to

    CAN DTC is not output

    A

    CAN DTC is output

    B
    A

    USE SIMULATION METHOD TO CHECK

    Click here

    B

    GO TO CAN COMMUNICATION SYSTEM

    Click here