DTC B2392

id0902b2855200

DTC B2392

Discharge headlight Input voltage high

DETECTION CONDITION

Warning
• Incorrect servicing of the discharge headlight control unit could result in electrical shock. Before servicing the discharge headlight control unit, always refer to "Discharge headlight service warnings". (See DISCHARGE HEADLIGHT SERVICE WARNINGS)
• Voltage detected at discharge headlight control unit terminals D is more than 19 V.

POSSIBLE CAUSE

• Short to power circuit between generator and PCM
• Generator malfunction
• Battery malfunction
• Discharge headlight control unit malfunction

Diagnostic procedure

STEP

INSPECTION

ACTION

1
INSPECT BATTERY VOLTAGE
• Measure battery voltage.
• Is voltage less than 19 V?
Yes
Go to next step.
No
Inspect charging system.
2
INSPECT DISCHARGE HEADLIGHT CONTROL UNIT
• Clear DTC.
• Read DTCs using SST (WDS or equivalent).
• Is DTC B2392 displayed again?
Yes
Replace discharge headlight control unit.
No
Troubleshooting completed.