DTC B2439: Headlight LH Circuit; DTC B243A: Headlight RH Circuit [11/2020 - 11/2021]: Description
The headlight ECU sub-assembly LH and headlight ECU sub-assembly RH internally boost the power supply voltage to ensure a constant supplied current for the Lo/Hi beam LED of their respective headlight.
By monitoring the LED power supply voltage, abnormal current and malfunctions can be detected.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area | DTC Output from | Priority | Note |
|---|---|---|---|---|---|---|
| B2439 | Headlight LH Circuit | Detection condition:
Malfunction status:
Malfunction duration:
|
|
HL AutoLeveling | A | for Mono Camera Type |
| B243A | Headlight RH Circuit | Detection condition:
Malfunction status:
Malfunction duration:
|
|
HL AutoLeveling (Sub) | A | for Mono Camera Type |
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area | DTC Output from | Priority | Note |
|---|---|---|---|---|---|---|
| B2439 | Headlight LH Circuit | Detection condition:
Malfunction status:
Malfunction duration:
|
|
AFS | A | for Stereo Camera Type |
| B243A | Headlight RH Circuit | Detection condition:
Malfunction status:
Malfunction duration:
|
|
AFS (Sub) | A | for Stereo Camera Type |