312000550 - B010 ENGINE DOES NOT START (UNDER ANY CIRCUMSTANCES)
The engine does not start. When the key is turned the instruments light up as normal, the starter motor turns, but the engine does not start up. | The VEHICLE PROTECTION system works properly |
| Test results | ||||
| 0 | PRELIMINARY CHECKS | All OK | Problems encountered | Operation |
|---|---|---|---|---|
| Check that the fuel cut off has not been activatedCheck that there is enough fuel in the tank.Turn the ignition switch ON for 2 seconds and then OFF.Check that the fuel pipe feels the pressure with the ignition ON. Check:
| Move on to Step 1 | 1. Activation of fuel cut off2. Not enough fuel in the tank3. No pressure in the fuel circuit4. Obstruction in the air intake circuit5. Air intake via the inlet manifold/throttle body seal6. Exhaust pipe blocked | 1. Restore correct operation by carrying out theSee Test 2. Top up the fuel with the correct amount.3. Move on to Step 2.4. Eliminate the problem, if necessary, replace the filter element Op. 1048A14 AIR CLEANER FILTER ELEMENT - REPLACE. 5. Restore the correct seal6. Restore the operation of the exhaust pipe. | |
| 1 | CHECK USING DIAGNOSTIC EQUIPMENT | All OK | Problems encountered | Operation |
Connect the diagnostic equipment (Examiner or other instruments) to the diagnostic socket and check:
| End of diagnosis | 1. Error detected in the control unit2. Parameter not consistent | 1. Continue following the instructions on the diagnostic equipment.2. Continue following the instructions on the diagnostic equipment. | |
| 2 | IGNITION SWITCH CHECK | All OK | Problems encountered | Operation |
| Check that the ignition switch is working correctly by carrying out the See Test 5520AA IGNITION SWITCH EFFICIENCY CHECK | Move on to Step 3 | Switch defective - contacts loose | Replace the ignition switch Op. 5520A10 IGNITION SWITCH ASSEMBLY - R+R | |
| 3 | RPM SIGNAL CHECK | All OK | Problems encountered | Operation |
| Check the operation of the rpm sensor by carrying out the See Test 5510CD RPM SENSOR AND COIL OPERATION CHECK See Test 5510CF RPM SIGNAL CHECK | Move on to Step 4 | 1. Sensor defective2. Wiring defective | 1. Replace the rpm sensor Op. 5510C26 ENGINE RPM SENSOR - R+R 2. Restore the correct wiring. | |
| 4 | FUEL SUPPLY CHECK | All OK | Problems encountered | Operation |
| Check the fuel supply pressure by carrying out the See Test 1056BY FUEL SYSTEM SUPPLY PRESSURE CHECKCheck the continuity of the wiring between the pump and the junction unit.Check that the submerged pump is working properly by carrying out the See Test 1040AB SUBMERGED FUEL PUMP CHECKCheck the continuity of the wiring between the junction unit and the engine control unit See E5030 PETROL ENGINES ELECTRONIC MANAGEMENT | Move on to Step 5 | 1. Fuel pressure too low: pipes obstructed2. Fuel pressure too low: pump defective3. Wiring broken | 1. Eliminate the constrictions2. Replace the pump assembly Op. 1040A70 SUBMERGED PUMP ASSEMBLY COMPLETE WITH LEVEL GAUGE CONTROL - R + R 3. Restore the correct wiring. | |
| 5 | IGNITION SYSTEM CHECK | All OK | Problems encountered | Operation |
| Inspect the spark plugs and check their operationCheck for any defects in the high voltage leadsCheck for the ignition control signal by carrying out the See Test 5510CE IGNITION CONTROL SIGNAL CHECKCheck that the ignition coils are working by carrying out the See Test 5510CI IGNITION COIL OPERATION CHECK | Move on to Step 6 | 1. Spark plugs defective2. High voltage cable connection leaking3. High voltage cable connection slack4. Ignition signal interrupted5. Coils defective | 1. Replace spark plugs Op. 5510D10 SPARK PLUGS - R+R2. Replace HT leads.3. Tighten HT lead correctly.5. Restore the ignition signal.4. Replace coils Op. 5510C14 IGNITION COIL/S - R.R. | |
| 6 | INJECTOR CHECK | All OK | Problems encountered | Operation |
| Using the Examiner in active diagnosis, check that the injectors are working properlyCheck that the injector opening is correctCheck the continuity of the injection wiringCheck the operation of the main relay | Move on to Step 7 | 1. Injectors stuck2. Wiring broken3. Main relay defective | 1. Replace the injectors. Op. 1056B70 INJECTOR (ONE) - R + R WITH FUEL MANIFOLD PIPE REMOVED - INCLUDES SEAL REPLACEMNT 2. Restore correct wiring See E5030 PETROL ENGINES ELECTRONIC MANAGEMENT 3. Replace the relay | |
| 7 | CYLINDER COMPRESSION CHECK | All OK | Problems encountered | Operation |
| Carry out the cylinder compression checkOp. 0520G15 COMPRESSION TEST - CHECK WITH EXAMINER WITH SPARK PLUGS/INJECTORS REMOVED | Move on to Step 9 | Cylinder compression insufficient | Move on to Step 8 | |
| 8 | CHECK ON CAUSE OF INSUFFICIENT COMPRESSION | All OK | Problems encountered | Operation |
| R & R head to check valve sealCheck condition of cylinders/piston rings | Move on to Step 9 | 1. Valve seal insufficient2. Cylinders/piston rings worn | 1. Restore the correct seal.2. Overhaul the head. | |
| 9 | ENGINE CONTROL UNIT CHECK | All OK | Problems encountered | Operation |
| Check that the engine control unit is working properly. | End of diagnosis | Engine management control unit defective | Replace the engine management control unit Op. 1056B82 INJECTION/IGNITION SYSTEM E.C.U. (ONE) - R + R | |