DPF Regeneration
Do the diesel particulate filter (DPF) regeneration procedure whenever you find any of these symptoms or whenever you do any of these actions.
  • When the DPF REGENERATION REQUIRED display (A) or DPF CHECK SYSTEM display (B) is on.
  • When the ECM is replaced.
  • When the warm up catalytic converter is replaced or it was loose before.
  • When the DPF differential pressure sensor is replaced or it was loose before.
  • When the DPF differential pressure sensor tube is replaced or it was loose before.
  • When the fuel injector is replaced or it was loose before.
  • When EGT sensor 1 is replaced or it was loose before.
  • When EGT sensor 2 is replaced or it was loose before.
  • When the MAF sensor/IAT sensor 1 is replaced or it was loose before.
  • When the MAP sensor/IAT sensor 2 is replaced or it was loose before.
  • When ECT sensor 1 is replaced or it was loose before.
  • When ECT sensor 2 is replaced or it was loose before.
  • When the ISV actuator control module is replaced.
  • When the EGR valve is replaced or it was loose before.
  • When the turbocharger is replaced or it was loose before.
  • When the exhaust manifold is replaced or it was loose before.
  • When the glow plug is replaced or it was loose before.
  • When the intake air tube was loose before.
  • Perform this procedure at outdoors.
  • Exhaust system will become very hot during this procedure. Do not place any flammable materials around the exhaust system.
  • Do not breath in the exhaust gas.

NOTE:
  • During this procedure, the idle speed may rise, but it is not a problem. Continue the procedure.
  • During this procedure, white smoke and smell may come out from the exhaust system, but it is not a mechanical problem. Do not breath in the exhaust gas, and continue the procedure.
  • Do not turn the ignition switch OFF during this procedure. You have to complete this procedure if you have once started.
  • This procedure will take about 5 to 30 minutes.
  • If any Temporary DTCs or DTCs are stored during this procedure, go to the indicated DTC's troubleshooting first, then do this procedure.
  1. Turn the ignition switch ON (II).
  1. Connect the HDS to the data link connector (DLC) (A) located under the driver's side of dashboard.
  1. Check for Temporary DTCs or DTCs with the HDS. If there are any Temporary DTCs or DTCs indicated, go to the indicated DTC's troubleshooting. If there are no DTCs indicated, go to Step 4 .
  1. Check DISTANCE OF LATEST DPF REGENERATION in the DATA LIST with the HDS. If it is over 300 km (186 mile), go to Step 5 . If it is below 300 km (186 mile), check for damage or clogging at the DPF differential pressure sensor and the DPF differential pressure sensor piping. If there is no damage or clogging there, go to Step 5 . If the DPF differential pressure sensor piping is damaged or clogged, replace the piping. Then go to Step 1 and do this procedure again.
  1. Select DPF REGENERATION in the Adjustment with the HDS. If the result is COMPLETED, this procedure is completed. If the HDS shows other than ‘‘COMPLETED'', go to the appropriate step listed below:
    • ‘‘Wrong condition'', go to Step 6 .
    • ‘‘DPF system check repuired'' (PM amount too much or Ash amount too much), go to Step 7 .
    • ‘‘The DPF regeneration mode interrupted'' (Exhaust system temperature did not rise after the specified time), go to Step 8 .
    • ‘‘The DPF regeneration mode interrupted'' (Exhaust gas temperature before the catalytic converter is too high (EGT sensor 1)), go to Step 9 .
    • ‘‘The DPF regeneration mode interrupted'' (Exhaust gas temperature between catalytic converter and the DPF is too high (EGT sensor 2)), go to Step 10 .
    • ‘‘The DPF regeneration mode interrupted'' (Time-out), go to Step 11 .
  1. If the HDS shows that the regeneration was interrupted because it was in the ‘‘Wrong condition'', follow what is shown in the screen.
  1. If the HDS shows ‘‘DPF system check required'' (PM amount too much or Ash amount too much), check these items:
    If there are no problems at the items, replace the DPF.
  1. If the HDS shows that the regeneration was interrupted because the exhaust system temperature did not rise after the specified time, check these items:
    If there are no problems at the items, replace EGT sensor 1, and EGT sensor 2. Then go to Step 1 and do this procedure again.
  1. If the HDS shows that the regeneration was interrupted because the exhaust gas temperature before the catalytic converter is too high (EGT sensor 1), check these items:
    If there are no problems at the items, replace EGT sensor 1. Then go to Step 1 and do this procedure again.
  1. If the HDS shows that the regeneration was interrupted because the exhaust gas temperature between the warm up catalytic converter and the DPF is too high (EGT sensor 2), check these items:
    If there are no problems at the items, replace EGT sensor 2. Then go to Step 1 and do this procedure again.
  1. If the HDS shows that the regeneration was interrupted because it was time out, check these items:
    If there are no problems at the items, replace EGT sensor 1, and EGT sensor 2. Then go to Step 1 and do this procedure again.