DTC P0093:00 [MZ-CD 1.6]
id0102g8146200
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DTC P0093:00 |
Fuel system leak detection |
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DETECTION CONDITION
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• If the rail pressure governor deviation exceeds the limiting valve 25 kPa {0.25 kgf/cm2, 3.6 psi} and if the high pressure pump delivery quantity reaches the limiting valve 20,620 mm3/s, the PCM determines fuel system leakage.
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POSSIBLE CAUSE
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• Fuel pipe improper connection on fuel tank
• Fuel leakage or clogged fuel line
• Suction control valve malfunction
• Supply pump malfunction
• Fuel pressure sensor malfunction
• Fuel injector malfunction
• PCM malfunction
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Diagnostic procedure
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STEP |
INSPECTION |
ACTION |
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1
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VERIFY FREEZE FRAME DATA OR SNAPSHOT DATA HAVE BEEN RECORDED
• Have FREEZE FRAME DATA or snapshot data been recorded?
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Yes
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Go to the next step.
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No
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Record the FREEZE FRAME DATA and snapshot data on the repair order, then go to the next step.
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2
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VERIFY RELATED SERVICE INFORMATION AVAILABILITY
• Verify related Service Information availability.
• Is any related Service Information available?
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Yes
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Perform the repair or diagnosis according to the available Service Information.
• If the vehicle is not repaired, go to the next step.
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No
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Go to the next step.
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3
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VERIFY RELATED PENDING CODE AND/OR DTC
• Switch the ignition to ON (engine off).
• Perform the Pending Trouble Code Access Procedure and DTC Reading Procedure.
• Is the other PENDING CODE/DTC also present?
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Yes
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Go to the applicable DTC inspection.
(See DTC TABLE [MZ-CD 1.6].)
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No
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Go to the next step.
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4
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INSPECT FUEL PIPE CONNECTION ON FUEL TANK
• Inspect the fuel pipes for supply and return connection at fuel tank.
• Are fuel pipes connected properly?
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Yes
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Go to the next step.
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No
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Reconnect fuel pipes properly, then go to Step 9.
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5
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INSPECT FUEL LINE
• Switch the ignition to off.
• Inspect for fuel leakage or clogging in the following fuel lines for each cylinder:
• Is there any malfunction?
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Yes
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Repair or replace the suspected fuel line, go to Step 9.
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No
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Go to the next step.
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6
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INSPECT SUCTION CONTROL VALVE
• Inspect the suction control valve.
• Is there any malfunction?
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Yes
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Repair the supply pump, go to Step 9.
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No
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Go to the next step.
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7
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INSPECT FUEL PRESSURE SENSOR
• Inspect the fuel pressure sensor.
• Is there any malfunction?
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Yes
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Replace the common rail, go to Step 9.
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No
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Go to the next step.
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8
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INSPECT FUEL INJECTOR
• Inspect the fuel injector.
• Is there any malfunction?
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Yes
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Replace the fuel injector, go to the next step.
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No
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Go to the next step.
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9
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VERIFY TROUBLESHOOTING OF DTC P0093:00 COMPLETED
• Make sure to reconnect all disconnected connectors.
• Clear the DTC from the PCM memory using the M-MDS.
• Start the engine.
• Is the PENDING CODE for this DTC present?
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Yes
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Replace the PCM, go to the next step.
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No
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Go to the next step.
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10
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VERIFY AFTER REPAIR PROCEDURE
• Perform the after repair procedure.
• Are any DTCs present?
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Yes
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Go to the applicable DTC inspection.
(See DTC TABLE [MZ-CD 1.6].)
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No
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DTC troubleshooting completed.
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