194001975 - D010 ENGINE IDLE IRREGULAR
-| Test results | ||||
| 0 | PRELIMINARY CHECKS | All OK | Problems encountered | Operation |
|---|---|---|---|---|
First, check:
| Move on to Step 1 | Spark plugs dirty or defective | Replace the spark plugs Op. Op. 5510D10 SPARK PLUGS - R+R | |
| Leads defective | Replace spark plug leads | |||
| Air filter blocked | Replace the filter element Op. Op. 1048A14 AIR CLEANER FILTER ELEMENT - REPLACE. | |||
| Fault in the air intake circuit | Restore the correct operation of the intake circuit | |||
| 1 | CHECK USING DIAGNOSTIC EQUIPMENT | All OK | Problems encountered | Operation |
| Connect the diagnostic test equipment (Examiner or other instruments) to the tester input. Check:
| Move on to Step 2 | "Fuel system" error detected | See table Z50 ERRORE TITOLO MISCELA | |
| Another error detected in the control unit | Continue following the instructions for the diagnostic equipment | |||
| Parameter not consistent | Continue following the instructions for the diagnostic equipment | |||
| 2 | IDLE ACTUATOR CHECK | All OK | Problems encountered | Operation |
| Check the system conducts the correct idle initialisation procedure | Move on to Step 3 | Irregular idle | Carry out the correct idle initialisation procedure | |
| 3 | PETROL VAPOUR RECOVERY SYSTEM CHECK | All OK | Problems encountered | Operation |
| Check the petrol vapour recovery pipe condition and seal | Move on to Step 4 | Air leaks | Restore the correct seal | |
| Pipe from filter to intermediate joint broken | Replace the pipe Op. Op. 1080E50 INTERMEDIATE FUEL VAPOUR PIPE R R | |||
| Pipe from intermediate joint to solenoid 1. Restore the correct seal | Replace the pipe Op. Op. 1080E66 AIR INTAKE CHAMBER FUEL VAPOUR INTAKE PIPE - R.R. | |||
| 4 | PETROL VAPOUR RECOVERY SOLENOID VALVE CHECK | All OK | Problems encountered | Operation |
| Carry out the active diagnosis of the solenoid valve | Move on to Step 6 | Solenoid valve not working | Move on to Step 5 | |
| 5 | SOLENOID VALVE ELECTRICAL CIRCUIT CHECK | All OK | Problems encountered | Operation |
| Check the petrol vapour recovery solenoid valve supply and earth. See See E5030 PETROL ENGINES ELECTRONIC MANAGEMENT | Move on to Step 6 | Solenoid valve faulty | Replace the solenoid Op. Op. 1080E28 ENABLEMENT SOLENOID FOR FLOW OF FUEL VAPOUR TO INLET - R+R | |
| Connections not correct | Repair the connections See See E5030 PETROL ENGINES ELECTRONIC MANAGEMENT | |||
| 6 | BRAKE SERVO AND PIPE CHECK | All OK | Problems encountered | Operation |
Check condition of:
| Move on to Step 7 | Brake servo pipe defective | Replace the pipe Op. Op. 3330D26 VACUUM PIPE FOR BRAKE SERVO ASSEMBLY - R.R | |
| Brake servo defective | Replace the brake servo/pump assembly Op. Op. 3330D02 BRAKE SERVO/BRAKE PUMP ASSEMBLY - R.R. | |||
| 7 | FUEL PRESSURE CHECK | All OK | Problems encountered | Operation |
| Check the fuel supply pressure Op. Op. 0510C10 FUEL SYSTEM - CHECK DELIVERY PRESSURE | Move on to Step 8 | Fuel pressure too low: pipe obstructed | Eliminate the obstructions, if necessary replace the pipe Op. Op. 1040B32 FRONT FUEL DELIVERY LINE - R.R. | |
| Fuel pressure too low: filter blocked | Replace the pump assembly Op. Op. 1040A70 SUBMERGED PUMP ASSEMBLY COMPLETE WITH LEVEL GAUGE CONTROL - R + R | |||
| Fuel pressure too low: regulator blocked | Replace the pump assembly Op. Op. 1040A70 SUBMERGED PUMP ASSEMBLY COMPLETE WITH LEVEL GAUGE CONTROL - R + R | |||
| Fuel pressure too low: pump defective | Replace the pump assembly Op. Op. 1040A70 SUBMERGED PUMP ASSEMBLY COMPLETE WITH LEVEL GAUGE CONTROL - R + R | |||
| 8 | PHASE TRANSFORMER SOLENOID VALVE CHECK | All OK | Problems encountered | Operation |
| Carry out the active diagnosis of the phase transformer solenoid valve | Move on to Step 10 | Solenoid valve not working | Move on to Step 9 | |
| 9 | PHASE TRANSFORMER ELECTRICAL CIRCUIT CHECK | All OK | Problems encountered | Operation |
| Check the supply and earth for the phase transformer solenoid valve See See E5030 PETROL ENGINES ELECTRONIC MANAGEMENT | Move on to Step 10 | Phase transformer faulty | Replace the phase transformer Op. Op. 1036C41 PHASE TRANSFORMER ON OVERHEAD CAMSHAFT (ONE) INTAKE EXHAUST ON CYLINDER HEAD - R.R. | |
| Connections not correct | Repair the connections See See E5030 PETROL ENGINES ELECTRONIC MANAGEMENT | |||
| 10 | PHASE TRANSFORMER CHECK | All OK | Problems encountered | Operation |
| Check the operation of the phase transformer supplying the phase transformer solenoid valve directly.The engine speed should vary considerably (very irregular idling) | Move on to Step 11 | There are no speed variations: phase transformer stuck | Replace the phase transformer Op. Op. 1036C41 PHASE TRANSFORMER ON OVERHEAD CAMSHAFT (ONE) INTAKE EXHAUST ON CYLINDER HEAD - R.R. | |
| 11 | TIMING CHECK | All OK | Problems encountered | Operation |
| Check that the valve gear timing is correct | Move on to Step 12 | Valve gear timing not correct | Restore the correct valve gear timing Op. Op. 1032B10 TOOTHED TIMING BELT - R + R FOR TIMING ADJUSTMENT OR REPLACEMENT | |
| 12 | CHECK ON CORRECT OPERATION | All OK | Problems encountered | Operation |
| Check that the fault is no longer present | End of diagnosis | The fault persists: control unit defective | Replace the control unit Op. Op. 1056B82 INJECTION/IGNITION SYSTEM E.C.U. (ONE) - R + R | |