AIR CONDITIONING SYSTEM(for Manual Air Conditioning System), Diagnostic DTC:U0100, U0131, U0142, U0155

DTC Code DTC Name
U0100 Lost Communication with ECM
U0131 Lost Communication with Electric Power Steering ECU
U0142 Lost Communication with Main Body ECU
U0155 Lost Communication with Combination Meter

DESCRIPTION

The air conditioning amplifier assembly communicates with the ECM, power steering ECU assembly, main body ECU and combination meter assembly through the CAN communication system.

DTC No. DTC Detection Condition Trouble Area
U0100 Lost communication with ECM.

  • CAN communication system

  • ECM

  • Air conditioning amplifier assembly
U0131 Lost Communication with power steering ECU assembly.

  • CAN communication system

  • Power steering ECU assembly

  • Air conditioning amplifier assembly
U0142 Lost Communication with main body ECU.

  • CAN communication system

  • Main body ECU

  • Air conditioning amplifier assembly
U0155 Lost Communication with combination meter assembly.

  • CAN communication system

  • Combination meter assembly

  • Air conditioning amplifier assembly

PROCEDURE


  1. CHECK FOR DTC (CAN COMMUNICATION SYSTEM)


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

      OK
      CAN DTC is not output
      Result
      Result Proceed to
      OK A
      NG*1 B
      NG*2 C

      • *1: w/ Toyota Safety Sense

      • *2: w/o Toyota Safety Sense


    A

    USE SIMULATION METHOD TO CHECK Click here

    B

    GO TO CAN COMMUNICATION SYSTEM (w/ Toyota Safety Sense) Click here

    C

    GO TO CAN COMMUNICATION SYSTEM (w/o Toyota Safety Sense) Click here