125000465 - B20 ENGINE STARTS, AND CUTS OUT STRAIGHT AWAY

Results of the tests
0PRELIMINARY CHECKSAll OKProblems encounteredOperation

First, check:

  • that the inertia switch has not been operated;
  • state of the spark plugs;
  • connections and state of the spark plug leads;
  • no obstructions at the catalyzer
Move on to Step 1Intertia switch operatedRestore correct operation
Spark plugs dirty or damagedReplace the spark plugs See Test 5510D10 SPARK PLUGS - R+R
Spark plug leads damagedReplace the leads
Catalyzer(s) blockedReplace catalyzer(s)
1CHECK USING DIAGNOSTIC EQUIPMENTAll OKProblems encounteredOperation
Connect the diagnostic equipment (Examiner or other instruments) to the diagnostic socket.

Check:

  • that there are no errors in the control unit;
  • parameter plausibility
Move on to Step 2Error detected in the control unitContinue following the instructions for the diagnostic equipment
Parameters not plausibleContinue following the instructions for the diagnostic equipment
2SUPPLY PRESSURE CHECKAll OKProblems encounteredOperation

  • Check the fuel supply pressure with the ignition ON and the engine switched off by carrying out Test 1056BY    See Test 1056 PETROL INJECTION SYSTEM
  • Start the engine and check that the supply pressure does not decrease
Move on to Step 4The supply pressure decreasesMove on to Step 3
3PETROL PUMP ELECTRIC CIRCUIT CHECKAll OKProblems encounteredOperation
Check petrol pump supply and earth See    See E5030 PETROL ENGINE ELECTRONIC MANAGEMENTMove on to Step 4Connections not correctRepair the connections See    See E5030 PETROL ENGINE ELECTRONIC MANAGEMENT
4CHECK ON CORRECT OPERATIONAll OKProblems encounteredOperation
Check that the fault is no longer presentEnd of diagnosisFault persists: control unit defectiveReplace the control unit Op. Op. 1056B82 CENTRALINA (UNICA) DELL''IMPIANTO INIEZIONE/ACCENSIONE - S.R.