Last Modified: 05-13-2024 6.11:8.1.0 Doc ID: RM1000000025R3K
Model Year Start: 2023 Model: GR Corolla Prod Date Range: [09/2022 - 11/2022]
Title: HEATING / AIR CONDITIONING: AIR CONDITIONING SYSTEM (except TMC Made, and Gasoline Model, with Manual Air Conditioning System for Electrical Control Type): B14BD; Refrigerant Overabundance Filling Malfunction; 2023 MY Corolla Corolla Hatchback GR Corolla [09/2022 - 11/2022]

DTC

B14BD

Refrigerant Overabundance Filling Malfunction

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 the compressor assembly with pulley operation current. If the amount of refrigerant in the system is determined to have exceeded a threshold, operation of the compressor assembly with pulley will be stopped, and will remain stopped even if the ignition 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 2021 - 2025 MY Corolla Corolla Hatchback Corolla HV GR Corolla [06/2020 -        ]; HEATING / AIR CONDITIONING: REFRIGERANT (for HFO-1234yf(R1234yf)): REPLACEMENT

NEXT

2.

CHARGE AIR CONDITIONING SYSTEM WITH REFRIGERANT

(a) Charge the air conditioning system with refrigerant.

Click here 2021 - 2025 MY Corolla Corolla Hatchback Corolla HV GR Corolla [06/2020 -        ]; HEATING / AIR CONDITIONING: REFRIGERANT (for HFO-1234yf(R1234yf)): REPLACEMENT

NEXT

END