Savana 1500 RWD V6-4.3L (2007)
Continuous Trap Oxidizer: Service and Repair
Exhaust Particulate Filter Cleaning (DPF Service Regeneration)
Exhaust Particulate Filter Cleaning (DPF Service Regeneration)
Diagnostic Instructions
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Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.
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Review Strategy Based Diagnosis for an overview of the diagnostic approach.
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Diagnostic Procedure Instructions provide an overview of each diagnostic category.
Caution: 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.
Caution: To avoid extremely elevated exhaust temperatures, inspect and remove any debris or mud build up at the exhaust cooler located at the tailpipe.
Notice: Due to the elevated engine temperatures created while performing this procedure it is imperative to keep the front of vehicle in an open
environment, away from any walls or buildings, this will ensure proper airflow across the radiator.
Conditions for Running
The following conditions must be met in order to enable DPF Service Regeneration:
Important: Do not refuel the vehicle during DPF Service Regeneration.
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There are no active DTCs displayed.
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The battery voltage is greater than 10 volts.
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The engine speed is between 600-1,250 RPM.
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The exhaust gas temperature (EGT) sensors 1 and 2 are less than 400°C (752°F).
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The engine coolant temperature (ECT) sensor 1 is between 70-115°C (158-239°F).
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The brake pedal and accelerator pedal are in the released position.
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The transmission is in park or neutral.
Test Procedure
1. Review the DTC information with a scan tool. Repair any codes before proceeding with DPF Service Regeneration.
2. Check the following fluid levels before and after this procedure:
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Engine oil
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Engine coolant
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Power steering
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Transmission
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Fuel level should be over 15 percent to ensure a successful regeneration.
3. Park the vehicle outside the facility and away from any obstacles.
4. Place the transmission in Park and apply the parking brake.
5. Raise the hood.
6. Select DPF Service Regeneration in the Output Controls menu and follow the instruction on the scan tool.
7. Command the DPF Service Regeneration with the scan tool.
8. The DPF Service Regeneration will take approximately 35 minutes consisting of the following:
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
2. 20 minutes for the DPF to regenerate at 2,500 RPM
3. 3 minutes for the exhaust system to cool down with the engine speed will slowly returning to 1,400 RPM
4. 3 minutes at 800 RPM, then idle speed of 680 RPM
9. The DPF Service Regeneration can be terminated by performing any of the following actions:
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Applying the brake pedal
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Applying the accelerator pedal
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Selecting Drive or Reverse
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Commanding DPF Service Regeneration OFF using the scan tool or disconnecting the scan tool from the vehicle
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The DPF Service Regeneration will be automatically terminated if certain DTCs are set or if the DPF or ECT temperatures exceed a
