AIR CONDITIONING SYSTEM, Diagnostic DTC:B1472/72

DTC Code DTC Name
B1472/72 A/C Inverter High Voltage Output System Malfunction

DESCRIPTION

The inverter in the compressor with motor assembly outputs high-voltage to operate the motor. If there is an open or short in the output circuit, the ECU will stop compressor operation and output the DTC. The output DTC will be memorized as a past DTC. The compressor operation remains stopped until both the past and present DTCs are cleared.

DTC No. DTC Detection Condition Trouble Area
B1472/72 Open or short in A/C inverter high voltage output system

  • Compressor with motor assembly

  • CAN communication system

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

    A

    REPLACE COMPRESSOR WITH MOTOR ASSEMBLY Click here

    B

    GO TO CAN COMMUNICATION SYSTEM Click here

    C

    GO TO CAN COMMUNICATION SYSTEM Click here