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STEP
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INSPECTION
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ACTION
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1
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VERIFY RELATED REPAIR INFORMATION AVAILABILITY
• Check for related Service Information availability.
• Is any related repair information available?
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Yes
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Perform repair or diagnosis according to available Service Information.
• If vehicle is not repaired, go to next step.
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No
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Go to next step.
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2
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FOLLOW OTHER DETECTED DTC FIRST
• Turn engine switch to OFF.
• Start engine.
• Have P0091, P0092, P0191, P0192, P0193 been detected?
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Yes
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Go to applicable DTC inspection.
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No
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Go to next step.
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3
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INSPECT SUCTION CONTROL VALVE
• Inspect suction control valve.
• Is there any malfunction?
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Yes
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Repair supply pump, go to Step 6.
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No
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Go to next step.
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4
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INSPECT FUEL PRESSURE SENSOR
• Inspect fuel pressure sensor.
• Is there any malfunction?
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Yes
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Replace common rail, go to Step 6.
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No
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Go to next step.
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5
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INSPECT COMMON RAIL
• Inspect common rail.
• Is there any malfunction?
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Yes
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Replace common rail, go to next step.
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No
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Go to next step.
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6
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VERIFY TROUBLESHOOTING OF DTC P0088 COMPLETED
• Make sure to reconnect all disconnected connectors.
• Clear DTC from PCM memory using WDS or equivalent.
• Start engine.
• Is same DTC present?
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Yes
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Replace PCM, go to next step.
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No
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Go to next step.
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7
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VERIFY AFTER REPAIR PROCEDURE
• Perform "After Repair Procedure".
• Is there any DTC present?
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Yes
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Go to applicable DTC inspection.
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No
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Troubleshooting completed.
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