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Home >> Toyota >> 2021 >> Highlander LE, 4WD >> Repair and Diagnosis >> Heating, Ventilation & A/C (HVAC) >> HVAC Control Systems >> Heating / Air Conditioning System (Except HV, W/ Auto A/C) - Diagnostic Codes (1 Of 2) >> AIR CONDITIONING SYSTEM (for Gasoline Model with Automatic Air Conditioning System) >> DTC B1422: Compressor Lock [12/2019 - 10/2022] >> Caution / Notice / Hint

Caution / Notice / Hint

NOTE:
  • The air conditioning system uses the CAN communication system. Inspect the communication functions by following How to Proceed with Troubleshooting. Troubleshoot the air conditioning system after confirming that the communication systems are functioning properly.

    Refer to HOW TO PROCEED WITH TROUBLESHOOTING [12/2019 - 10/2022]

  • ECM malfunctions can affect the storage of this DTC. Therefore, check all SFI system DTCs and confirm that the system is normal before performing the following inspection.

    Refer to DTC CHECK / CLEAR [12/2019 - 10/2022]

  • After replacing the air conditioning amplifier assembly, make sure to perform Initialization Servo Motor.

    Refer to INITIALIZATION [12/2019 - 11/2023]

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