Scania DC09 Engine Workshop Manual. Wiring Diagram
Scania DC09 Engine Workshop Manual is a detailed guide to maintenance, diagnostics and repair of the 5-cylinder diesel engine Scania DC09. The documentation covers all aspects of the design and operation of the engine, including the fuel system, intake and exhaust system, cooling, electrical equipment and adjustment procedure.
- Detailed diagram of engine assembly and disassembly
- Electrical diagrams, control diagram and EMS
- Tightening torque tables
- Diagnostics of Typical Faults Codes
- Instructions for calibration and adaptation of sensors
- Scania trucks series P, G, R
R270 DC9 E02
R280 OC09 101
R350 OC09 102
R250 DC09 111
R280 DC09 113
R320 DC09 108
R360 DC09 112
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Scania DC09 Electrical system (2015)
Industrial engines DC09, DC13, DC16
Marine engines DI09, DI13, DI16
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| Scania DC09 Introduction | Download |
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Scania DC09 – Main faults and weak points:
1. Clogged EGR system (if any)
Symptoms: Loss of power, increased fuel consumption, exhaust temperature error
Reason: Soot and oil accumulation in the EGR valve and cooler
Solution: Regular cleaning or disconnection (for non-certified purposes)
2. Wear of PDE unit injectors
Symptoms: Uneven engine operation, difficult starting, smoking
Reason: Aging PDE seals, fuel getting into the oil
Solution: Check injection pressure, replace seals or the injectors themselves
3. Errors in EMS (EEC3/EEC4/S6)
Symptoms: Emergency mode activation, error codes for sensors (temperature, pressure, NOx)
Reason: Damaged wiring, connector corrosion, software failures
Solution: Diagnostics with SDP3, ground check, firmware update
4. Clogged intercooler and radiator
Symptoms: Overheating, loss of power, limited speed
Reason: Lack of cleaning, especially in dusty/humid conditions
Solution: Cleaning the air ducts and radiator
5. Oil leak from under the valve cover or heat exchanger
Symptoms: Oil on the cylinder head, drop in level
Reason: Shrinkage of gaskets, deformation of the cover or housing
Solution: Replacement of gaskets, leak test
6. Failure of the fan viscous coupling
Symptoms: Overheating in traffic jams, fan noise
Reason: Failure of the temperature-sensitive element
Solution: Replacement of the coupling
7. Problems with the AdBlue / SCR system (Euro 6)
Symptoms: Limited power, dosing errors, ammonia smell
Reason: Crystallization of urea, contamination of the dispenser
Solution: Cleaning systems, replacement of components, especially in winter