Mitsubishi Fuso Canter Diesel Particulate Filter DPF (2010-2021)

The Diesel Particulate Filter (DPF) on Mitsubishi Fuso Canter models, especially 3.0 TDI and FE/FG series from 2010-2017, captures soot particles (PM) from exhaust gases to reduce pollutant emissions. The DPF regenerates automatically by increasing exhaust gas temperature during high-speed highway driving. In urban driving where exhaust gas doesn't heat enough, manual regeneration is required.

• Automatic regeneration: The truck's ECU raises exhaust temperature to continuously burn soot during highway use.
• Manual regeneration: If the DPF indicator flashes (e.g. in traffic jams or low heat conditions), park safely and press the DPF Cleaning Switch to start cleaning. Ignoring flashing may reduce engine power.
• Data display: PM accumulation level, regeneration status, and manual requests are shown on the Ivis dashboard screen.

DPF failures commonly result from heavy soot blockage, frequently linked to defective glow plugs that fail to generate sufficient heat for regeneration.

• Symptoms: DPF warning light on or flashing, loss of power, increased fuel consumption, black smoke from exhaust, engine warning light.
• Diagnosis: Use diagnostic scanners (e.g., King Bolin) to check DPF pressure sensors. Normal differential pressure is below 10 millibars; blocked DPF shows above 20 millibars. Also inspect glow plug relay and pressure sensors.
• Real case example: In a Canter, DPF pressure dropped from over 20 to 5.5 millibars after mobile chemical cleaning and relay replacement resolving the warning light.

Adhering to the Fuso Canter 2010-2017 service manual helps avoid premature wear and maintains DPF efficiency.

• Every 30,000 km (18,000 miles) or 12 months: Inspect DPF for damage, exhaust gas leaks, loose bolts/counters, and damaged supports. Also check exhaust system for corrosion and leaks.
• Every 240,000 km (144,000 miles) or 60 months: Replace glow plugs to prevent DPF clogging.
• Every 24 months: Change coolant fluid to maintain optimal engine temperature.
• Regularly (every 30,000 km): Replace air, oil, and fuel filters to reduce DPF fouling.

Additionally, maintain the DEF (AdBlue) fluid level using Fuso-approved fluid (ISO 22241) to support the Selective Catalytic Reduction (SCR) system. Low DEF triggers staged power reduction, warning lights, and buzzer alerts.

DPF cleaning and repairs can be performed through the following methods:

• Chemical mobile cleaning: Injects about 2 liters of chemical product, heats the engine, and purges soot effectively for blocked filters.
• Manual cleaning: Activated via the DPF cleaning switch while monitoring progress on the Ivis screen.
• Professional cleaning: Specialized service centers offer thorough cleaning to restore power, reduce consumption, and clear warning lights.

To prevent clogging, avoid frequent short urban trips; favor highway driving for passive DPF regeneration. Replace the DPF if ash accumulation is excessive (similar replacement intervals to DAF trucks: approximately every 3 years or 180,000 to 540,000 km, adjusted for Fuso usage).

The DPF works in conjunction with several critical exhaust system components for optimal emission control:

• Selective Catalytic Reduction (SCR): Works with DEF (AdBlue) fluid to reduce nitrogen oxide emissions downstream of the DPF.
• Catalytic converter: Positioned before or after the DPF to convert harmful gases via catalytic reactions.
• Glow plugs: Ensure preheating of combustion to support DPF regeneration.
• Pressure sensors: Monitor differential pressure to detect DPF blockage.

Proper maintenance of these related components is essential to maintain the lifespan and effectiveness of the DPF system.

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Effective diagnosis involves checking the DPF pressure differential and ensuring related components like glow plugs and relays function properly:

• Use diagnostic tools to read DPF pressure sensors; a pressure above 20 millibars indicates blockage, while below 10 is normal.
• Inspect glow plugs and their relay as faulty parts can prevent proper regeneration by failing to raise combustion temperature.
• Perform manual or chemical cleaning if automatic regeneration fails or blockage is detected.
• Consult professional services for thorough cleaning or replacement if necessary.

Regular maintenance and monitoring are key to preventing severe DPF issues and related engine performance losses.

For detailed maintenance procedures, diagnostic tips, and parts information, consider the following resources:

• Official Fuso Canter service manuals for 2010-2017 models covering DPF system maintenance schedules and diagnostics.
• Specialized tutorial videos such as DPF Cleaning 3.0 TDI demonstration and mobile chemical cleaning methods on platforms like YouTube.
• Professional DPF cleaning services and forums where Fuso truck owners share experiences and solutions.
• Contact Krosfou for OEM-quality DPFs and catalytic converters with technical support and warranty services.

For accurate diagnostics and repair, it is recommended to consult authorized Fuso dealers and experienced exhaust system specialists.