DTC P1303:00 [SKYACTIV-D 2.2]
id0102s4149100
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DTC P1303:00 |
EGR cooler bypass valve full closing angle malfunction |
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DETECTION CONDITION
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• EGR cooler bypass valve position sensor signal voltage is 1.3 V or more, or 0.65 V or less with the ignition switched off and EGR cooler bypass valve fully closed.
• Power supply voltage is 11.5 V or less, or 14.5 V or more, or fluctuation in voltage is 5 V or more when the specified time has elapsed since the ignition was switched off.
• Difference between EGR cooler bypass valve fully-closed throttle voltage and current fully-closed throttle voltage exceeds 0.13 V
MONITORING CONDITIONS
Diagnostic support note
• This is a continuous monitor (other).
• The check engine light does not illuminate.
• FREEZE FRAME DATA (Mode 2)/Snapshot data is not available.
• DTC is not stored in the PCM memory.
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FAIL-SAFE FUNCTION
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Not applicable
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POSSIBLE CAUSE
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• EGR cooler bypass valve/EGR cooler bypass valve position sensor connector or terminals malfunction
• PCM connector or terminals malfunction
• EGR cooler bypass valve sticking, or foreign matter penetration
• EGR cooler bypass valve position sensor malfunction
• PCM malfunction
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SYSTEM WIRING DIAGRAM
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Not applicable
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Diagnostic Procedure
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STEP |
INSPECTION |
ACTION |
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1
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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 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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VERIFY RELATED PENDING CODE AND/OR DTC
• Switch the ignition off, then ON (engine off).
• Perform the Pending Trouble Code Access Procedure and DTC Reading Procedure.
• Are any other PENDING CODEs and/or DTCs present?
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Yes
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Go to the applicable PENDING CODE or DTC inspection.
(See DTC TABLE [SKYACTIV-D 2.2].)
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No
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Go to the next step.
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3
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INSPECT EGR COOLER BYPASS VALVE/EGR COOLER BYPASS VALVE POSITION SENSOR CONNECTOR CONDITION
• Switch the ignition off.
• Disconnect the EGR cooler bypass valve/EGR cooler bypass valve position sensor connector.
• Inspect for poor connection (such as damaged/pulled-out pins, corrosion).
• Is there any malfunction?
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Yes
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Repair or replace the connector and/or terminals, then go to Step 7.
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No
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Go to the next step.
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4
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INSPECT PCM CONNECTOR CONDITION
• Disconnect the PCM connector.
• Inspect for poor connection (such as damaged/pulled-out pins, corrosion).
• Is there any malfunction?
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Yes
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Repair or replace the connector and/or terminals, then go to Step 7.
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No
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Go to the next step.
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5
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INSPECT EGR COOLER BYPASS VALVE
• Inspect the EGR cooler bypass valve.
• Is there any malfunction?
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Yes
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Replace the EGR cooler bypass valve, then go to Step 7.
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No
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Go to the next step.
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6
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INSPECT EGR COOLER BYPASS VALVE POSITION SENSOR
• Reconnect all disconnected connectors.
• Inspect the EGR cooler bypass valve position sensor.
• Is there any malfunction?
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Yes
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Replace the EGR cooler bypass valve, then go to the next step.
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No
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Go to the next step.
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7
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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.
• Switch the ignition to off and wait for 10 s or more.
• Perform the DTC Reading Procedure.
• Is the same 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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8
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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 [SKYACTIV-D 2.2].)
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No
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DTC troubleshooting completed.
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