DTC U0401:00 [AFS (ADAPTIVE FRONT LIGHTING SYSTEM)]
id0902g9934900
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DESCRIPTION |
Error signal from PCM |
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DETECTION CONDITION
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• AFS control module receives the invalid data from PCM when the ignition is ON.
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POSSIBLE CAUSE
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• PCM DTC is stored.
• PCM malfunction
• AFS control module malfunction
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Diagnostic Procedure
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STEP |
INSPECTION |
ACTION |
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1
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CONFIRM PCM DTC
• Perform the PCM DTC inspection using the M-MDS.
• Are any DTCs present?
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Yes
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Go to the applicable DTC inspection.
(See DTC TABLE [MZR 1.5, MZR 1.6].)
(See DTC TABLE [MZR 2.0, MZR 2.5].)
(See DTC TABLE [MZ-CD 1.6].)
(See DTC TABLE [MZR-CD 2.2].)
(See DTC TABLE [SKYACTIV-G 2.0].)
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No
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Go to the next step.
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2
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PERFORM DTC INSPECTION AND VERIFY THAT MALFUNCTIONING PART IS PCM
• Clear the DTC from the AFS control module using the M-MDS.
• Perform the AFS control module DTC inspection using the M-MDS.
• Is the same DTC present?
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Yes
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Replace the PCM, then go to the next step.
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No
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Go to Step 4.
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3
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VERIFY TROUBLESHOOTING COMPLETED
• Clear the DTC from the AFS control module using the M-MDS.
• Perform the AFS control module DTC inspection using the M-MDS.
• Is the same DTC present?
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Yes
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Replace the AFS control module, then go to the next step.
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No
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Go to the next step.
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4
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VERIFY THAT NO OTHER DTCs ARE PRESENT
• Are any DTCs present?
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Yes
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Go to the applicable DTC inspection.
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No
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DTC troubleshooting completed.
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