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 store the DTC. The DTC will be stored as a history DTC. The compressor operation remains stopped until both the history and current DTCs are cleared.

DTC Code DTC Detection Condition Trouble Area
B1472/72 Open or short in compressor with motor assembly high voltage output system.

  • Compressor with motor assembly

  • CAN communication system

INSPECTION PROCEDURE

Note

The hybrid control system and air conditioning system output DTCs separately. Inspect DTCs following the diagnosis procedure for the hybrid control system first if any DTCs from those systems are output simultaneously Click here.

PROCEDURE


  1. CHECK FOR DTC


    1. Clear the DTCs Click here.

    2. Check the DTCs Click here.

      OK
      DTC B1472/72 is not output.

    NG

    CHECK CAN COMMUNICATION SYSTEM Click here

    OK

    USE SIMULATION METHOD TO CHECK Click here

  2. CHECK CAN COMMUNICATION SYSTEM


    1. Using the GTS 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