AIR CONDITIONING SYSTEM, Diagnostic DTC:B1474/74

DTC Code DTC Name
B1474/74 A/C Inverter Malfunction

DESCRIPTION

DTC No. DTC Detection Condition Trouble Area
B1474/74 A/C inverter malfunction

  • Compressor with motor assembly

  • CAN communication system

INSPECTION PROCEDURE

PROCEDURE


  1. CHECK DTC (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

    REPLACE COMPRESSOR WITH MOTOR ASSEMBLY Click here