DTC P3400:00 [PCM (WITH CYLINDER DEACTIVATION (SKYACTIV-G 2.0, SKYACTIV-G 2.5))]
id0102sd517000
Details On DTCs
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Description |
Cylinder deactivation system malfunction |
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Detection condition
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Determination conditions
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• A condition continues in which both the intake valve and exhaust valve for No.1 or No.4 cylinder open mistakenly during cylinder deactivation control.
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Preconditions
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• During cylinder deactivation control
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Malfunction determination period
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• 0.5 s period
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Drive cycle
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• 2
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Self test type
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• CMDTC self test
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Sensor used
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• A/F sensor
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Fail-safe function
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• Inhibits the cylinder deactivation control.
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Vehicle status when DTCs are output
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• Illuminates check engine light.
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Possible cause
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• Switchable HLA malfunction
• OCV for No.1 cylinder deactivation malfunction
• OCV for No.4 cylinder deactivation malfunction
• Intake valve and exhaust valve for No.1 cylinder stuck open malfunction
• Intake valve and exhaust valve for No.4 cylinder stuck open malfunction
• Engine oil solenoid valve malfunction
• Engine oil malfunction
• PCM malfunction
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System Wiring Diagram
Function Explanation (DTC Detection Outline)
Repeatability Verification Procedure
PID Item/Simulation Item Used In Diagnosis
Function Inspection Using M-MDS
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Step |
Inspection |
Results |
Action |
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1
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PURPOSE: 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 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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2
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PURPOSE: RECORD VEHICLE STATUS AT TIME OF DTC DETECTION TO UTILIZE WITH REPEATABILITY VERIFICATION
• Record the FREEZE FRAME DATA/snapshot data on the repair order.
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—
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Go to Troubleshooting Diagnostic Procedure to perform the procedure from Step 1.
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Troubleshooting Diagnostic Procedure
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Step |
Inspection |
Results |
Action |
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1
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PURPOSE: INSPECT ENGINE OIL LEVEL
• Switch the ignition off.
• Inspect the engine oil level.
• Is the engine oil level sufficient?
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Yes
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Go to the next step.
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No
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Add genuine motor oil, then go to Step 13.
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2
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PURPOSE: INSPECT INSTALLATION OF OCV FOR No.1 CYLINDER DEACTIVATION
• Inspect installation of OCV for No.1 cylinder deactivation.
• Is the OCV for No.1 cylinder deactivation installed securely?
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Yes
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Go to the next step.
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No
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Retighten the OCV for No.1 cylinder deactivation, then go to Step 13.
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3
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PURPOSE: INSPECT INSTALLATION OF OCV FOR No.4 CYLINDER DEACTIVATION
• Inspect installation of OCV for No.4 cylinder deactivation.
• Is the OCV for No.4 cylinder deactivation installed securely?
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Yes
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Go to the next step.
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No
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Retighten the OCV for No.4 cylinder deactivation, then go to Step 13.
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4
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PURPOSE: INSPECT OCV FOR No.1 CYLINDER DEACTIVATION
• Inspect the OCV for No.1 cylinder deactivation.
• Is there any malfunction?
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Yes
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Replace the OCV for No.1 cylinder deactivation, then go to Step 13.
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No
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Go to the next step.
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5
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PURPOSE: INSPECT OCV FOR No.4 CYLINDER DEACTIVATION
• Inspect the OCV for No.4 cylinder deactivation.
• Is there any malfunction?
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Yes
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Replace the OCV for No.4 cylinder deactivation, then go to Step 13.
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No
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Go to the next step.
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6
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PURPOSE: INSPECT SWITCHABLE HLA
• Inspect the switchable HLA.
• Is there any malfunction?
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Yes
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Replace the switchable HLA, then go to Step 13.
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No
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Go to the next step.
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7
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PURPOSE: INSPECT CONDITION OF INTAKE VALVE AND EXHAUST VALVE FOR No.1 CYLINDER
• Inspect the condition of the intake valve and the exhaust valve for No.1 cylinder.
• Are the intake valve and the exhaust valve for No.1 cylinder stuck?
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Yes
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Clean or replace the stuck valve, then go to Step 13.
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No
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Go to the next step.
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8
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PURPOSE: INSPECT CONDITION OF INTAKE VALVE AND EXHAUST VALVE FOR No.4 CYLINDER
• Inspect the condition of the intake valve and the exhaust valve for No.4 cylinder.
• Are the intake valve and the exhaust valve for No.4 cylinder stuck?
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Yes
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Clean or replace the stuck valve, then go to Step 13.
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No
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Go to the next step.
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9
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PURPOSE: INSPECT ENGINE OIL SOLENOID VALVE
• Inspect the engine oil solenoid valve.
• Is there any malfunction?
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Yes
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Replace the engine oil solenoid valve, then go to Step 13.
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No
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Go to the next step.
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10
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PURPOSE: INSPECT IF INSUFFICIENT HYDRAULIC PRESSURE CAUSED BY USE OF UNSPECIFIED ENGINE OIL
• Is the specified engine oil being used?
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Yes
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Go to the next step.
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No
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Replace the engine oil with genuine motor oil, then go to Step 13.
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11
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PURPOSE: INSPECT ENGINE OIL PRESSURE
• Inspect the engine oil pressure.
• Is there any malfunction?
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Yes
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Go to the next step.
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No
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Go to Step 13.
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12
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PURPOSE: VERIFY IF MALFUNCTION RELATED TO ENGINE OIL LEAK OR RESTRICTION AFFECTS DIAGNOSTIC RESULTS
• Start the engine.
• Verify if there is engine oil leakage in the oil passage or restriction.
• Is there engine oil leakage in the oil passage or restriction?
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Yes
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Repair or replace the malfunctioning part according to the inspection results.
Add genuine motor oil, then go to the next step.
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No
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Go to the next step.
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13
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PURPOSE: VERIFY DTC TROUBLESHOOTING COMPLETED
• Always reconnect all disconnected connectors.
• Clear the DTC from the PCM memory using the M-MDS.
• Start the engine and warm it up completely.
• Drive the vehicle under the freeze frame data/snapshot data condition.
• Perform the DTC Reading Procedure.
• Is the PENDING CODE for this DTC present?
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Yes
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Repeat the inspection from Step 1.
• If the malfunction recurs, 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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14
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PURPOSE: 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.
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No
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DTC troubleshooting completed.
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