Warning: Tailpipe outlet exhaust temperature will be greater than 300°C (572°F) during service regeneration. To help prevent personal injury or property damage from fire or burns, perform the following:

1. Do not connect any shop exhaust removal hoses to the vehicle's tailpipe.
2. Park the vehicle outdoors and keep people, other vehicles, and combustible material away during service regeneration.
3. Do not leave the vehicle unattended.

Warning: To avoid extremely elevated exhaust temperatures, inspect and remove any debris or mud build up at the exhaust cooler located at the tailpipe.

Caution: Due to the elevated engine temperatures created while performing this procedure it is imperative to keep the front of vehicle in an open environment, with the hood open, away from any walls or buildings. This will ensure proper airflow across the radiator.

Note: If you were not referred to this document from another diagnostic, DO NOT perform this procedure.

The following conditions must be met in order to enable DPF Service Regeneration:

1. Clear all DTCs with a scan tool before proceeding with DPF Service Regeneration.
2. Observe the scan tool DPF Regenerations Completed parameter and record the value.
3. Check the following fluid levels before and after this procedure:

•	Engine oil

•	Engine coolant

•	Power steering

•	Transmission

•	Fuel level should be over 15 percent to ensure a successful regeneration.

4. Park the vehicle outside the facility, away from any obstacles, place the transmission in Park and apply the parking brake.
5. Ensure the hood is open.
6. Select DPF Service Regeneration in the Output Controls menu and follow the instruction on the scan tool.
7. Command the DPF Service Regeneration ON with a scan tool.

⇒	If the service regeneration failed to start, repair the vehicle for the condition indicated by the scan tool DPF Regen Inhibit Reason parameter. Refer to the Service Regeneration Unsuccessful table.

8. The DPF Service Regeneration will take approximately 35 minutes consisting of the following:

8.1.	8 minutes for the exhaust system to warm up, with the engine speed slowly increasing to 1,600 RPM, then 2,200 RPM and finally 2,500 RPM

8.2.	20 minutes for the DPF to regenerate at an engine speed between 2,200-2,500 RPM

8.3.	3 minutes for the exhaust system to cool down with the engine speed will slowly returning to 1,400 RPM

8.4.	3 minutes at 800 RPM, then idle speed of 680 RPM

9. The DPF Service Regeneration will be terminated if any of the following actions are performed:

•	Applying the brake pedal

•	Applying the accelerator pedal

•	Selecting Drive or Reverse

•	Commanding DPF Service Regeneration OFF using the scan tool or disconnecting the scan tool from the vehicle

Note: 

•	The DPF Service Regeneration will terminate if the DPF or ECT temperatures exceed a calibrated threshold.

•	Temporary blue, gray, or white smoke during this procedure may be an indication of a fuel with high sulfur content.

10. After the service regeneration completes, clear all DTCs and turn the ignition OFF for 90 seconds.

⇒	If the service regeneration did not complete or aborted, replace the Exhaust Particulate Filter.

11. Engine running, perform the following within 10 minutes of a successful service regeneration. Operate the vehicle within the following Conditions for Running DTC P2002. Refer to DTC P2002.

⇒	If DTC P2002 or P244B sets, replace the Exhaust Particulate Filter.

12. Verify that the scan tool DPF Regenerations Completed parameter has increased by one.

⇒	If the value has not increased by one, refer to Service Regeneration Unsuccessful.

The scan tool DPF Regeneration Inhibit reason parameter will display a reason for not enabling or aborting the DPF service regeneration. Refer to the reasons that are displayed and the corrective action for each reason.