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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 next step.
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2
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VERIFY 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 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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INDETIFY TRIGGER DTC FOR FEEZE FRAME DATA
• Is DTC P1405 on FREEZE FRAME DATA?
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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 FREEZE FRAME DATA DTC inspection.
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4
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INSPECT UPSTREAM PRESSURE HOSE CONNECTIONS
• Inspect upstream hose at D.P.F.EGR sensor and orifice tube assembly for connect or poor connection.
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Yes
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Repair for hose connection properly, then go to the Step 8.
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No
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Go to the next step.
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5
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INSPECT UPSTREAM PRESSURE HOSE FOR PLUGGING
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Note
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• It is essential that the D.P.F. EGR pressure hose used is the connect repair part and not a substitute.
• Visually inspect upstream pressure hose routing. Hose must not be pinched or have dips in it where water could settle or plugging, water or leaks.
• Remove upstream pressure hose and carefully inspect for plugging, water or leaks
• Is there a fault detected in the hose?
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Yes
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Repair or replace malfunctioning pressure hose, then go to Step 8.
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No
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Go to the next step.
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6
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CHECK ORIFICE TUBE ASSEMBLY AND D.P.F. EGR SENSOR
• Inspect the upstream connection on the D.P.F. EGR sensor for plugging or damage at the sensor.
• Inspect the exhaust manifold side pressure pickup tube at the orifice assembly for plugging or damage.
• Is the D.P.F. EGR sensor or orifice tube assembly plugged or damaged?
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Yes
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Repair or replace D.P.F. EGR sensor or orifice tube assembly. Then go to Step 8.
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No
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Go to the next step.
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7
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CHECK D.P.F.EGR SENSOR OUTPUT BY APPLYING VACUUM WITH HAND PUMP
• Connect the WDS or equivalent to DLC.
• Disconnect pressure hoses at D.P.F.EGR sensor.
• Connect a hand vacuum pump to the downstream connection at sensor (intake manifold side of sensor or smaller diameter pickup tube.)
• Turn the ignition switch to ON.
• Access DPFEGR PID and note PID value.
• Apply 27-30 kPa {8-9 inHg} vacuum to the D.P.F.EGR sensor and hold for a few seconds.
• Quickly release vacuum.
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- The DPFEGR PID voltage must be between 0.2 and 1.3 V with the ignition switch ON and no vacuum applied.
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- The DPFEGR PID voltage must increase to greater than 4.0 V with the vacuum applied.
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- The DPFEGR PID must drop to less than 1.5 V in less than 3 seconds when vacuum is released.
• Does DPFEGR PID voltage indicate a fault in the D.P.F.EGR sensor?
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Yes
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Replace D.P.F. EGR sensor, then go to the next step.
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No
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Unable to duplication or identify fault at this time. Go to the next step.
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8
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VERIFY TROUBLESHOOTING OF DTC P1405 COMPLETED
• Make sure to reconnect all disconnected connectors.
• Clear the DTC from the PCM memory using the WDS or equivalent.
• Drive the vehicles from a stop, accelerate to 72 km/h {45 MPH} at 1/2 to 3/4 throttle. Repeat 3 times.
• Is the PENDING CODE same DTC present?
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Yes
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Replace PCM, then go to 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 AFTER SERVICE PRECAUTION
• Perform "AFTER SERVICE PRECAUTION".
• 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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