Renault DXi13 Engine Workshop Manual. Wiring Diagram
This is a professional repair and maintenance manual for the Renault DXi13 12.8 litre diesel engine fitted to Renault Magnum, Premium Route and early Renault Trucks T heavy duty trucks. The manual covers both the mechanical and electrical circuits of the engine, including the fuel injection system, turbocharging, EGR, SCR (AdBlue) and electronic injection control.
Renault DXi13 Engine
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DXi13 Engine Typical Faults
1. Turbocharger (VGT) wear and seizure
Causes: contamination, bad oil, geometry actuator malfunction.
Signs: loss of thrust, boost errors, smoking.
Solution: cleaning geometry, checking electric drive, changing oil/turbine.
2. Misfires and loss of power
Causes: injector wear (EUI/XPI), air leaks, bad fuel.
Signs: vibrations, unstable operation, black smoke.
Solution: checking and calibrating injectors, replacing filters.
3. Engine overheating
Causes: thermostat failure, radiator contamination, water pump malfunction.
Signs: high temperature, emergency mode.
Solution: replacing thermostat, flushing cooling system, diagnosing pump.
4. Clogged EGR system
Causes: carbon deposits, bad fuel, short trips.
Signs: loss of power, EGR errors, uneven operation.
Solution: cleaning the EGR valve and pipes, disabling on the firmware (illegal).
5. Malfunctions in the SCR (AdBlue) system
Causes: urea crystallization, pump or sensor failure.
Signs: NOx errors, power limitation, inability to start.
Solution: flushing the AdBlue system, replacing the injector or pump, reprogramming the dosing unit.
6. Oil consumption and soot deposits
Causes: wear of oil scraper rings, clogged breather, problems with the turbine.
Signs: increased oil consumption, black exhaust.
Solution: diagnostics of the cylinder-piston group, checking the crankcase gas pressure.
7. CAN bus and EMS unit errors
Causes: damaged wires, connector oxidation, software failures.
Signs: communication failure with sensors, unstable operation of the ECU.
Solution: wiring test, CAN diagnostics, software update.