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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 (2 Of 2) >> AIR CONDITIONING SYSTEM (for Gasoline Model with Automatic Air Conditioning System) >> DTC B14B3: Lost Communication with Rear Panel LIN [12/2019 - 11/2023] >> Description

DTC B14B3: Lost Communication with Rear Panel LIN [12/2019 - 11/2023]: Description

The No. 2 air conditioning control assembly communicates with the air conditioning amplifier assembly via LIN communication.

If a malfunction occurs in the LIN communication system, the air conditioning amplifier assembly will not operate even if the No. 2 air conditioning control assembly is operated.

DTC No. Detection Item DTC Detection Condition Trouble Area Memory
B14B3 Lost Communication with Rear Panel LIN Lost communication with No. 2 air conditioning control assembly
  • Harness or connector
  • No. 2 air conditioning control assembly
  • Air conditioning amplifier assembly
 Memorized
(10 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.

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