2888338 - D21 ENGINE CUTS OUT WHILST DRIVING

When driving with the engine hot, it suddenly cuts out and then, a few moments later, starts normally.
Results of the tests
0PRELIMINARY CHECKSAll OKProblems metOperation

Preliminarily check:

  • the engine wiring is properly connected to earth
  • battery earth correctly fixed
  • correct fixing of positive battery terminal and that all leads are connected
  • ignition switch electrical connections
  • ignition switch electrical connections
  • correct fixing and connection to battery of maxifuse boxes
Continue to Step 1Earth leads incorrectly fixedRestore the battery earth lead Op.     5530B22
Battery positive earth incorrectly fixedRestore battery positive lead Op.     5530B26
Maxifuse box fixings incorrectRenew fixings or replace maxifuse box Op.     5505A16
1INERTIA SWITCH CHECKAll OKProblems metOperation

Check

  • that the inertia switch is working properly
  • the electrical connections for the inertia switch
Continue to Step 2Fault detected with the inertia switchReplace the inertia switch Op.     1040A74
Inertia switch connections faultyRestore connection between inertia switch and fuel pump ( See     E5030 PETROL ENGINE ELECTRONIC MANAGEMENT
2CHECKING WITH DIAGNOSTIC EQUIPMENTAll OKProblems metOperation
Connect the diagnostic equipment (Examiner or other instruments) to the diagnostic socket

Check

  • that there are no faults in the engine management control unit
  • the plausibility of all the parameters.
Continue to Step 3An error is detected in the control unit Continue according to the instructions for the diagnostic equipment
Lack of dialogue with the control unitRestore the connection between the engine management control unit and the diagnostic connector ( See     E5030 PETROL ENGINE ELECTRONIC MANAGEMENT
3ROAD TEST WITH DIAGNOSTIC EQUIPMENTAll OKProblems metOperation
Road test the vehicle keeping the diagnostic equipment (Examiner or other instruments) connected to the diagnostic socket.

Check

  • that there are no faults in the engine management control unit
Continue to Step 4Error arises suddenly in the control unit Renew the supply and earth connections for the engine management control unit ( See     E5030 PETROL ENGINE ELECTRONIC MANAGEMENT
4FUEL PRESSURE ROAD TESTAll OKProblems metOperation
Road test the vehicle and check the fuel supply pressure Op.     0510C10 Continue to Step 5Pressure not correctCheck the multi-purpose valve, in particular.If necessary, replace the valve Op.     1080E11
5FUEL PUMP CONNECTIONS CHECKAll OKProblems metOperation
Check the fuel pump electrical connections Continue to Step 6Fuel pump connections faultyRenew the fuel pump connections ( See     E5030 PETROL ENGINE ELECTRONIC MANAGEMENT
Fuel pump faulty Replace the fuel pump assembly Op.     1056B70
6CHECK ON CORRECT OPERATIONAll OKProblems metOperation
Check that the fault is no longer presentEnd of diagnosisFault persists