AIR CONDITIONING SYSTEM (for Manual Air Conditioning System), Diagnostic DTC:U0100, U0142, U0155

DTC Code DTC Name
U0100 Lost Communication with ECM / PCM "A"
U0142 Lost Communication with Body Control Module "B"
U0155 Lost Communication with Instrument Panel Cluster (IPC) Control Module

DESCRIPTION

The air conditioning amplifier assembly communicates with the ECM and meter ECU through the CAN communication system.

DTC Code DTC Detection Condition Trouble Area
U0100 No communication with ECM

  • CAN communication system

  • ECM

  • Air conditioning amplifier assembly
U0142 No communication with main body ECU (cowl side junction block LH)

  • CAN communication system

  • Main body ECU (cowl side junction block LH)

  • Air conditioning amplifier assembly
U0155 No communication with combination meter assembly

  • CAN communication system

  • Combination meter assembly

  • Air conditioning amplifier assembly

INSPECTION PROCEDURE

PROCEDURE


  1. CHECK CAN COMMUNICATION SYSTEM


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


      Result
      Result Proceed to
      CAN DTC is not output A
      CAN DTC is output (for LHD) B
      CAN DTC is output (for RHD) C

    B

    GO TO CAN COMMUNICATION SYSTEM Click here

    C

    GO TO CAN COMMUNICATION SYSTEM Click here

    A

    USE SIMULATION METHOD TO CHECK Click here