Toyota Avalon (XX50) 2019-2022 Service & Repair Manual: Refrigerant Overabundance Filling Malfunction (B14BD)

Toyota Avalon (XX50) 2019-2022 Service & Repair Manual / Vehicle Interior / Heating / Air Conditioning / Air Conditioning System(for Gasoline Model) / Refrigerant Overabundance Filling Malfunction (B14BD)

DESCRIPTION

This DTC is stored if the amount of refrigerant in the in the air conditioning system exceeds a threshold. The air conditioning amplifier assembly judges whether the amount of refrigerant is appropriate based on the detected refrigerant pressure and cooler compressor assembly operation current. If the amount of refrigerant in the system is determined to have exceeded a threshold, operation of the cooler compressor assembly will be stopped, and will remain stopped even if the engine switch is turned off and then the engine is restarted.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

Memory

B14BD

Refrigerant Overabundance Filling Malfunction

All of the following conditions are met 2 times or more in the same trip:

  • The vehicle speed is 20 km/h or more
  • The amount of compressor oil is within the insufficient compressor oil range for 60 seconds or more
  • Refrigerant volume
  • Air conditioning amplifier assembly

Memorized

(60 sec. or more)*
  • *: The air conditioning amplifier assembly stores this DTC if the malfunction has occurred for the period of time indicated in the brackets.

*a

Electric Current (mA)

*b

Refrigerant Pressure kPa (kgf/cm2, psi)

PROCEDURE

1.

RECOVER REFRIGERANT FROM REFRIGERATION SYSTEM

(a) Recover the refrigerant from the air conditioning system using a refrigerant recovery unit.

Click here

NEXT

2.

CHARGE AIR CONDITIONING SYSTEM WITH REFRIGERANT

(a) Charge the air conditioning system with refrigerant.

Click here

NEXT

END
    Refrigerant Shortage (B14B8)

    Room Temperature Sensor Circuit (B1411)

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