| | Test results |
| 1 | MODE PARAMETERS CHECK | All OK | Problems encountered | Operation |
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| Select the following control unit at the diagnostic equipment: Electronic injection control unit EDC16C39 CF4/EOBD CAN (EP engine 1.9).Check the value of the following parameters:· Battery voltage See Test 5530BB BATTERY VOLTAGE CHECK· Accelerator pedal· Accelerator position 1 AD/C· Accelerator position 2 AD/C See Test 1068AC ACCELERATOR PEDAL CHECKS· Engine rpm See Test 1060GI CHECK ENGINE SPEED- Target Diesel pressure- Measured Diesel pressure See Test 1060GH DIESEL PRESSURE CHECK | Move on to Step 2 | | |
| 2 | CONFIGURATION TESTS | All OK | Problems encountered | Operation |
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| Select the following control unit on the diagnostic tester. Diesel electronic injection control unit EDC16C39 CF4/EOBD CAN (EP engine 1.9)Check in the Configurations section whether the replacement of any of the following components is followed by their subsequent configuration:· Air flow meter· Fuel pressure sensor· Injector· Differential pressure sensor on the catalytic converter· Lambda sensor· Main catalytic converter with filter· Pre-catalyzerIn this case, carry out the configuration, checking that the outcome is positive | Move on to Step 4 | The outcome of the configuration is not positive | Move on to Step 3 |
| 3 | CONFIGURATION REPETITION | All OK | Problems encountered | Operation |
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| Repeat the configuration, check that the outcome is positive this time | Move on to Step 4 | The outcome of the configuration is not positive | Replace the engine management control unit Op. 1060G80 DIESEL ELECTRONIC INJECTION CONTROL UNIT - R.R |
| 4 | ELECTRICAL EQUIPMENT CHECK | All OK | Problems encountered | Operation |
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| Check that fuse F59 has not blown (second from the left on the second row from the bottom) | Move on to Step 5 | Fuse F59 has blown | Restore the connections or, if necessary, replace the junction unit in the engine compartment Op. 5505A13 ADDITIONAL JUNCTION UNIT IN ENGINE COMPARTMENT - R.R. |
| 5 | DIESEL PREHEATING RELAY CHECK | All OK | Problems encountered | Operation |
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| Check the diesel preheating relay circuitSee Test 5505AC | Move on to Step 6 | | |
| 6 | CHECK USING DIAGNOSTIC EQUIPMENT | All OK | Problems encountered | Operation |
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| Carry out the active diagnosis for the E.G.R. solenoid | Move on to Step 7 | Solenoid not working | Restore the wiring continuity See E5050 DIESEL ENGINES ELECTRONIC MANAGEMENT Replace the solenoid if necessary Op. 1080C24 E.G.R. SYSTEM SOLENOID - R + R |
| 7 | FUEL FILTER CHECK | All OK | Problems encountered | Operation |
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| Check fuel filter operation | Move on to Step 8 | Water, petrol, paraffin or dirt found to be present | Clean the tank and pipes and replace the diesel filter cartridge Op. 1044B10 FUEL FILTER ASSEMBLY - R + R OR REPLACE |
| 8 | VALVE CLEARANCE CHECK | All OK | Problems encountered | Operation |
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| Check that the tappet clearance is correct Op. 1036H10 VALVE TAPPETS - CHECK AND ADJUST CLEARANCE, IF NECESSARY | Move on to Step 9 | Valve clearance not correct | Adjust the tappets |
| 9 | CYLINDER COMPRESSION CHECK | All OK | Problems encountered | Operation |
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| Carry out the cylinder compression check Op. 0510A10 CYLINDER COMPRESSION - CHECK FOR LOOSE SPARK PLUGS OR INJECTORS | Move on to Step 11 | Cylinder compression insufficient | Move on to Step 10 |
| 10 | CHECK THE CAUSE OF THE INSUFFICIENT COMPRESSION | All OK | Problems encountered | Operation |
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| Carry out Op. 1016C10 SINGLE CYLINDER HEAD - R.R. AND REPLACE GASKET to check the valve seal and the condition of the cylinders/piston rings | Move on to Step 11 | Valve seal insufficient | Overhaul the cylinder head Op. 1016E10 SINGLE CYLINDER HEAD, REMOVED - OVERHAUL |
| 11 | CORRECT OPERATION CHECK | All OK | Problems encountered | Operation |
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| Check that the fault is no longer present | End of diagnosis | Fault persists | Replace the engine management control unit Op. 1060G80 DIESEL ELECTRONIC INJECTION CONTROL UNIT - R.R |
