Diagnostic procedure
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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 FREEZE FRAME DATA HAS BEEN RECORDED
• Has FREEZE FRAME 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 on the repair order, then go to the next step.
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2
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VERIFY RELATED REPAIR INFORMATION AVAILABILITY
• Verify related service repair information availability.
• Is any related repair information available?
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Yes
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Perform repair or diagnosis according to the available repair 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 OTHER STORED DTCS
• Connect the WDS or equivalent to DLC-2.
• Turn the engine switch to ON position.
• Retrieve the stored DTC.
• Is the DTC P2458 or P242F displayed?
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Yes
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Go to the applicable DTC inspection.
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No
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Go to the next step.
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4
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INSPECT EXHAUST GAS PRESSURE SENSOR HOSE CONNECTION
• Visually inspect the exhaust gas pressure sensor hose connection.
• Are the hoses 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 hoses properly, then go to the next step.
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5
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INSPECT CHARACTER FOR SENSORS
• Inspect character for following sensors.
• Are characters normal?
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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 abnormal part.
Perform the fuel injection learning, then go to Step14.
(See Injection amount correction.)
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6
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INSPECT ENGINE COMPRESSION
• Inspect engine compression.
• Is it normal?
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Yes
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Go to the next step.
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No
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Perform engine overhaul for repairs, then go to the next step.
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7
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VISUALLY INSPECT CKP SENSOR
• Visually inspect for CKP sensor and CKP sensor pulse wheel.
• Is there any problem?
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Yes
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Repair or replace suspected part.
Perform the fuel injection learning, then go to Step14.
(See Injection amount correction.)
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No
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Go to the next step.
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8
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INSPECT EGR VALVE OPERATION
• Perform EGR Valve Operation Inspection.
• Does the EGR valve work properly?
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Yes
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Go to the next step.
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No
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Repair or replace malfunctioning part according to inspection results.
Perform the fuel injection learning, then go to Step14.
(See Injection amount correction.)
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9
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VISUALLY INSPECT A/F SENSOR AND EXHAUST GAS TEMPERATURE SENSOR (LOWER)
• Remove and visually inspect the A/F sensor and exhaust gas temperature sensor (lower).
• Is there any white or melted on tip?
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Yes
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Replace suspect sensor, then go to the next step.
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No
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Perform the fuel injection learning, then go to Step14.
(See Injection amount correction.)
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10
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VISUALLY INSPECT DIESEL PARTICULATE FILTER
• Visually inspect the diesel particulate filter.
• Is there any damaged or deterioration (white)?
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Yes
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Replace the diesel particulate filter, then go to the next step.
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No
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Perform the fuel injection learning, then go to Step14.
(See Injection amount correction.)
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11
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PERFORM DIESEL PARTICULATE FILTER REPLACE RELATED PROCEDURE
• Perform the following;
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-
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Go to the next step.
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12
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RETRIEVE DTC
• Retrieve any DTC using the WDS or equivalent.
• Is DTC P2428 detected?
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Yes
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Go to the Step 1.
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No
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Go to the next step.
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13
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PERFORM DIESEL PARTICULATE FILTER ASSESSMENT
• Perform "DIESEL PARTICULATE FILTER ASSESSMENT".
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-
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Go to the next step.
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14
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VERIFY TROUBLESHOOTING OF DTC P2428 COMPLETED
• Make sure to reconnect all disconnected connectors.
• Turn the engine switch to ON position (engine off).
• Clear the DTC from PCM memory using the WDS or equivalent.
• Start the engine.
• Is the same 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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15
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VERIFY AFTER REPAIR PROCEDURE
• Perform "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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Troubleshooting completed.
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