198001696 - D010 ENGINE IDLE IRREGULAR
The customer complains of: Irregular idling/vibrations| Test results | ||||||
| 0 | PRELIMINARY CHECKS | All OK | Problems encountered | Operation | ||
|---|---|---|---|---|---|---|
| Check that the engine oil level is correct Op. 0010T11 ENGINE OIL - CHECK LEVEL AND TOP UP, IF NECESSARY Check that the air intake/vacuum circuit is working properly by carrying out the See Test 1048OA AIR INTAKE/VACUUM CIRCUIT CHECKCheck the condition of the fuel supply circuit and make sure that it is working properly by doing the following: See Test 1040OA Fuel supply circuit checkCheck the operation of the low pressure supply circuit by carrying out the See Test 1060OB Low pressure fuel supply circuit check | Move on to Step 1 | Oil level incorrect | Restore the correct engine oil level Op. 0010T11 ENGINE OIL - CHECK LEVEL AND TOP UP, IF NECESSARY | |||
| 1 | MODE PARAMETERS CHECK | All OK | Problems encountered | Operation | ||
| Select the following control unit at the diagnostic equipment: EDC16C39 Diesel electronic injection control unit.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· Target Diesel pressure· Measured Diesel pressure See Test 1060GH DIESEL PRESSURE CHECK· Engine rpm· Measured air mass· Engine coolant temperature See Test 5030AA COOLANT TEMPERATURE SENSOR CHECK | Move on to Step 2 | |||||
| 2 | ACTIVE DIAGNOSIS OF THE PREHEATING RELAY | All OK | Problems encountered | Operation | ||
Carry out the active diagnosis for the preheating relay, checking that the result is positive.
| Move on to Step 4 | The result of the active diagnosis is negative | Move on to Step 3 | |||
| 3 | GLOW HEATER PLUGS CHECK | All OK | Problems encountered | Operation | ||
| Check that the glow heater plugs are working properly, by carrying out the See Test 5520CA GLOW HEATER PLUGS OPERATION CHECK | Move on to Step 4 | |||||
| 4 | CHECK USING DIAGNOSTIC EQUIPMENT | All OK | Problems encountered | Operation | ||
| Carry out the active diagnosis for the E.G.R. solenoid | Move on to Step 5 | 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 | |||
| 5 | FUEL FILTER CHECK | All OK | Problems encountered | Operation | ||
| Check that the fuel filter is working properly by doing the following: See T CHECK ON CHANGE IN PRESSURE AT THE FUEL FILTER | Move on to Step 6 | The fuel filter is not working properly | Replace the diesel fuel filter Op. 1044B10 FUEL FILTER ASSEMBLY - R + R OR REPLACE | |||
| 6 | CYLINDER COMPRESSION CHECK | All OK | Problems encountered | Operation | ||
| Carry out the cylinder compression check Op. 0520G15 COMPRESSION TEST - CHECK WITH EXAMINER WITH SPARK PLUGS/INJECTORS REMOVED | Move on to Step 8 | Cylinder compression insufficient | Move on to Step 7 | |||
| 7 | CHECK ON CAUSE OF INSUFFICIENT COMPRESSION | All OK | Problems encountered | Operation | ||
| 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 8 | Valve seal insufficient | Overhaul the cylinder head Op. 1016E10 SINGLE CYLINDER HEAD, REMOVED - OVERHAUL | |||
| 8 | CORRECT OPERATION CHECK | All OK | Problems encountered | Operation | ||
| 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 | |||
