DTC B3A0B-19: A/C Heating Electric Expansion Valve Circuit Current Above Threshold [08/2023 - ]: Description
The heating electric expansion valve (No. 2 cooler expansion valve) is installed on the inlet pipe of the cooler condenser assembly and is half open when the ignition switch is turned off. When the ignition switch is turned to ON, heat pump air conditioning control is performed to operate the stepping motor and adjust the valve opening angle of the heating electric expansion valve (No. 2 cooler expansion valve). When heat pump air conditioning control is performing cooling/cooling battery cooling/single battery cooling, the heating electric expansion valve (No. 2 cooler expansion valve) is opened according to signals from the heat pump ECU assembly. When heat pump air conditioning control is performing heating/serial heating/parallel dehumidification heating/defrosting, the heating electric expansion valve (No. 2 cooler expansion valve) is adjusted to the appropriate control opening angle according to signals from the heat pump ECU assembly.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area | MIL | Memory | DTC Output from | Priority | Note |
|---|---|---|---|---|---|---|---|---|
| B3A0B-19 | A/C Heating Electric Expansion Valve Circuit Current Above Threshold | Diagnosis condition:
Malfunction status:
Detection time:
Trip:
|
|
Come on | Memorized | Air Conditioner | A | SAE Code:
|