ON-BOARD DIAGNOSTIC [DISCHARGE HEADLIGHT]
T–146–5
T
End Of Sie
DTC B2392
A6E818867000W10
Diagnostic procedure
End Of Sie
DTC B2393
A6E818867000W11
Diagnostic procedure
End Of Sie
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 T–25 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
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.
(See T–30 DISCHARGE HEADLIGHT CONTROL UNIT
REMOVAL/INSTALLATION )
No Troubleshooting completed.
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 T–25 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
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.
(See T–30 DISCHARGE HEADLIGHT
CONTROL UNIT REMOVAL/INSTALLATION)
• Does discharge headlight illuminate normally?
Yes Troubleshooting completed.
No Ignitor in front combination light may be malfunctioning.
Replace front combination light.
(See T–26 FRONT COMBINATION LIGHT REMOVAL/
INSTALLATION)
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