DEF & Aftertreatment Course Series
D101
DEF and Aftertreatment Fundamentals
Understand diesel emissions systems and perform safe DEF and aftertreatment inspections.
| Level | Starter |
|---|---|
| Duration | 2 days / 12 hours |
| Tuition | $895 |
| Format | Classroom + hands-on shop training |
| Prerequisite | No previous aftertreatment experience required. |
| Award | Certificate of Completion |
Module 1: Emissions-System Foundations
- Purpose of DOC, DPF, SCR, DEF and ammonia-slip catalyst
- Exhaust flow and basic system operation
- DEF quality, storage, handling and contamination prevention
- Safety around hot exhaust, chemicals and pressurized systems
Module 2: Components and Maintenance
- DEF tank, heater, pump, lines, doser and sensors
- DPF differential-pressure and temperature sensors
- Routine inspection and maintenance points
- Recognizing warning lamps, derate messages and common driver complaints
Module 3: Basic Checks
- Visual inspection for leaks, crystallization and damaged wiring
- DEF quality and concentration checks
- Basic scan-tool navigation and code awareness
- Maintenance records and customer/driver education
Learning Outcome
By the end of this course, successful participants should be able to apply the covered procedures at the course level under appropriate workplace supervision and in accordance with OEM service information and shop safety requirements.
D201
DEF and Aftertreatment Diagnostics
Diagnose common DEF, DPF and SCR faults using scan data, electrical tests and service information.
Module 1: Diagnostic Strategy
- Complaint verification and full-system code review
- Understanding inducement and derate conditions
- Using OEM service information and test plans
- Avoiding unnecessary parts replacement
Module 2: DEF Supply and Dosing Tests
- DEF quality, contamination and freeze-related concerns
- Pump pressure, purge, line and doser function concepts
- Heater-circuit and level/quality-sensor testing
- Leak, restriction and crystallization diagnosis
Module 3: DPF and SCR Diagnosis
- Soot-load, ash-load and differential-pressure interpretation
- Temperature-sensor and regeneration data analysis
- NOx-sensor and SCR-efficiency diagnosis
- Wiring, connector and basic circuit testing
Module 4: Repair Verification
- Cleaning-versus-replacement decision factors
- Stationary regeneration safety and prerequisites
- Reset, relearn and verification procedures where applicable
- Documentation and prevention recommendations
| Level | Intermediate |
|---|---|
| Duration | 3 days / 18 hours |
| Tuition | $1,495 |
| Format | Classroom + hands-on shop training |
| Prerequisite | D101 or equivalent emissions-system experience. |
| Award | Certificate of Completion |
Learning Outcome
By the end of this course, successful participants should be able to apply the covered procedures at the course level under appropriate workplace supervision and in accordance with OEM service information and shop safety requirements.
D301
Advanced Aftertreatment and SCR Diagnostics
Resolve complex, repeat and intermittent aftertreatment faults through advanced data analysis and root-cause testing.
| Level | Expert |
|---|---|
| Duration | 4 days / 24 hours |
| Tuition | $2,295 |
| Format | Classroom + hands-on shop training |
| Prerequisite | D201 plus strong electrical and scan-tool skills; instructor approval recommended. |
| Award | Certificate of Completion |
Module 1:
Advanced Electronic Diagnostics
- Five-step diagnostic strategy for intermittent and multiple-code faults
- Advanced circuit testing and signal interpretation
- ECM power, ground and communication-network diagnosis
- Using OEM test plans, specifications and technical service information
Module 2:
Failure Analysis
- Root-cause analysis for bearing, piston, liner, valve and head failures
- Oil, coolant and contamination evidence
- Interpreting wear patterns and measurement results
- Repair-versus-rebuild decision-making and estimate preparation
Module 3:
Engine Measurement and Overhaul
- Disassembly control, identification and inspection
- Cylinder liner protrusion, bore, journal and clearance measurements
- Cylinder-head, valve-train and timing inspection
- Assembly sequence, torque procedures, lubrication and cleanliness
Module 4:
Commissioning and Quality Control
- Pre-lube, first start and run-in procedures
- Post-overhaul pressure, temperature and leak checks
- Performance verification and road-test planning
- Repair records, quality-control checklist and customer explanation
Learning Outcome
By the end of this course, successful participants should be able to apply the covered procedures at the course level under appropriate workplace supervision and in accordance with OEM service information and shop safety requirements.
Fees includes
Tuiton fees, textbook, and training related tools for use only in the training center.After every course there will be exam nad will be provided with certificate of the course.
Build practical heavy-duty repair skills with training designed around real shop work.
Contact us to discuss the right starting level, upcoming class dates, group training or a customized program for your fleet or repair shop.