DTC B3A01-12: A/C Evaporator Front Magnetic Valve Circuit Short to Battery [12/2023 - ]: Description
WARNING: This page is about a different car, the 2024 Lexus TX 550h+. However, it is still accessible from the selected car via links, so may be relevant.
The evaporator front magnetic valve (No. 2 magnet valve assembly) is installed to the No. 1 air conditioning accessory assembly and is open when the ignition switch is turned off.
When the ignition switch is turned to ON, the evaporator front magnetic valve (No. 2 magnet valve assembly) opens and closes according to air conditioning control.
When air conditioning control is performing single battery cooling, the evaporator front magnetic valve (No. 2 magnet valve assembly) is closed according to signals from the air conditioning amplifier assembly.
When air conditioning control is performing except single battery cooling, the evaporator front magnetic valve (No. 2 magnet valve assembly) is open.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area | MIL | Memory | DTC Output from | Priority | Note |
|---|---|---|---|---|---|---|---|---|
| B3A01-12 | A/C Evaporator Front Magnetic Valve Circuit Short to Battery | Diagnosis condition:
Malfunction status:
Detection time:
|
|
Does not come on | Memorized | Air Conditioner | A | - |