Renault DXi 5 Engine Workshop Manual. Diagnostic
Renault DXi 5 Engine Workshop Manual. A detailed guide to diagnosing and troubleshooting the DXi 5 diesel engine. It contains diagrams, system descriptions, error codes, step-by-step testing procedures and troubleshooting tips. The material is useful for service centers, mechanics and owners of Renault trucks equipped with this engine, allowing you to quickly and accurately identify and fix problems.
Renault DXi 5 Engine (MID 128)
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| Renault DXi 5 General. Technical specifications | Download |
| Renault DXi 5 Engine Mechanic. Moving Equipment. Lubrication. Cooling | Download |
| Renault DXi 5 Electronic Management. Common rail injection system | Download |
| Renault DXi 5 Diagnostic. Fault Codes. Hydraulic Diagnostics. | Download |
Renault Midlum DXi 5/DXi 7 Wiring Diagram
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| Renault Midlum Communication BUS architecture | Download |
| Renault Midlum Wiring diagrams | Download |
| Renault Midlum Equipment locations | Download |
| Renault Midlum Electrical distribution | Download |
| Renault Midlum Chassis-cab/bulkhead grommet connection | Download |
| Renault Midlum Trailer connectors | Download |
| Renault Midlum Available power supplies | Download |
| Renault Midlum Connectors | Download |
Renault DXi 5 Engine tipical Problems
1. Fuel System (Common Rail)
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Injector wear/leaks — copper washer failure, excessive return flow, poor spray pattern.
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High-pressure pump (HP pump) — plunger wear, metal shavings contaminating the fuel system.
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Fuel pressure sensor faults — incorrect readings causing limp mode.
2. Turbocharging
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Bearing wear and shaft play in the turbocharger.
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Oil leaks into the compressor side.
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Boost loss from cracked intercooler pipes or loose clamps.
3. Cooling System
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Water pump leaks (seal wear).
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Radiator blockage from dirt/dust, leading to overheating.
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Thermostat sticking, causing improper operating temperature.
4. Lubrication System
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Oil leaks from the valve cover gasket and crankshaft seals.
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Clogged crankcase breather leading to high crankcase pressure.
5. Sensors & Electronics
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Crankshaft position sensor (CPS) failure — can cause engine stalling.
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Coolant temperature sensor giving false readings.
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Wiring harness chafing, especially at cab-to-chassis joints.
6. Emissions Control
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EGR valve clogging with soot, reducing performance.
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SCR/AdBlue system faults — NOx sensor failure, level sensor malfunctions.