DTC B2393

id0902b2855300

DTC B2393

Discharge headlight control unit output circuit malfunction

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.)
• Abnormal output from discharge headlight control unit to ignitor.

POSSIBLE CAUSE

• Open circuit, short to ground or short to power circuit in front combination light internal harness

Diagnostic procedure

STEP

INSPECTION

ACTION

1
INSPECT CONNECTOR CONNECTION
• Check fit of discharge headlight control unit and headlight connectors on both sides (discharge headlight control unit (LH) and (RH)).
• Are installation condition and fit okay?
Yes
Go to next step.
No
After correcting fit, clear DTC and check DTC again.
• If DTC is displayed again, go to next step.
2
INSPECT DISCHARGE HEADLIGHT CONTROL UNIT
• Replace discharge headlight control unit.
• Does discharge headlight illuminate normally?
Yes
Troubleshooting completed.
No
Ignitor in front combination light may be malfunctioning. Replace front combination light.