| | Test results |
| 0 | PRELIMINARY CHECKS | All OK | Problems encountered | Operation |
|---|
| Before start-up, check that the MIL warning light is on and goes off when the engine has started.Also check that after-market accessories have not been fitted | Move on to Step 1 | The MIL warning light does not come on when the key is inserted | Continue as instructed in the See table K100 MIL WARNING LIGHT NOT WORKING (REMAINS OFF BEFORE STARTING) |
| The MIL warning light stays on with the engine started | Continue as instructed in the See table K101 MIL WARNING LIGHT STAYS ON (ENGINE STARTS) |
| After-market accessories present | Check that these accessories have been correctly installed |
| 1 | CONTROL UNIT ELECTRICAL CONNECTION CHECK | All OK | Problems encountered | Operation |
|---|
| Check that the engine control unit electrical connections are correct See E5030 PETROL ENGINES ELECTRONIC MANAGEMENT In particular, check that:- the earth has been correctly connected- resistances between control units See M010 ENGINE MANAGEMENT ECU and the battery negative See A001 BATTERY is less than 0.5 Ohm | Move on to Step 2 | Earth connections incorrect | Restore the correct connections |
| Resistance to battery negative greater than 0.5 Ohms | Restore the correct connections |
| 2 | CHECK CONTROL UNIT FASTENING | All OK | Problems encountered | Operation |
|---|
| Check that the control unti is correctly fastened in its seat Op. 1056F82 CONTROL UNIT SINGLE OF INJECTION IGNITION SYSTEM R R | Move on to Step 3 | Fastening of control unit incorrect | Renew the correct fastening of the control unit Op. 1056F82 CONTROL UNIT SINGLE OF INJECTION IGNITION SYSTEM R R |
| 3 | TEMPERATURE SENSOR CHECK | All OK | Problems encountered | Operation |
|---|
| Check that the engine coolant temperature sensor is not blocked, check the engine coolant and intake air temperature readings on the diagnostic instrument, check that the difference between both values is not greater than 3° C. | Move on to Step 4 | Temperature values out of range | Check the coolant temperature sensor is operating correctly See Test 1056BC ENGINE COOLANT TEMPERATURE SENSOR OPERATION CHECK |
| 4 | RPM SENSOR CHECK | All OK | Problems encountered | Operation |
|---|
| Check that the rpm sensor resistance reading is between 700 and 1200 Ohms in all temperature ranges | Move on to Step 5 | Reistance values out of range | Change the rpm sensor Op. 5510C26 ENGINE RPM SENSOR - R+R |
| 5 | FUEL PUMP RELAY CHECK | All OK | Problems encountered | Operation |
|---|
| Insert the ignition key and check the pump comes on for 2 seconds | Move on to Step 6 | The pump is not activated | Check that the fuel pump relay is working properly See Test 1040AD FUEL PUMP RELAY CHECK |
| 6 | POWER SUPPLY CIRCUIT CHECK | All OK | Problems encountered | Operation |
|---|
| Check there are no faults in the fuel supply circuit by performing the See Test 1040OA FUEL SUPPLY CIRCUIT CHECK | Move on to Step 7 | Faults present | The test indicates the solution |
| 7 | INJECTOR CHECK | All OK | Problems encountered | Operation |
|---|
| Check that the injectors are not stuck closed or imperfectly closed by conducting See Test 1056BA INJECTOR OPERATION CHECK | Move on to Step 8 | Faults present | The test indicates the solution |
| 8 | CHECK FOR IMPURITIES IN THE FUEL | All OK | Problems encountered | Operation |
|---|
| Check that the fuel does not contain impurities such as water, alcohol or suspended particles by performing test See T FUEL QUALITY CHECK | Move on to Step 9 | Faults present | The test indicates the solution |
| 9 | IGNITION COIL CHECK | All OK | Problems encountered | Operation |
|---|
| Check that the ignition coils are correctly fitted in their seats. Also check that they do not show signs of corrosion or moisture.Also check that the ignition coils are operating correctly by conducting See Test 5510CC IGNITION COIL CHECK | Move on to Step 10 | One of the coils is operating incorrectly | Refit the coil correctly Op. 5510C14 IGNITION COIL/S - R.R. |
| One of the coils shows signs of corrosion/moisture | Replace the coil Op. 5510C14 IGNITION COIL/S - R.R. |
| One of the coils is operating incorrectly | The test indicates the solution |
| 10 | SPARK PLUG CHECK | All OK | Problems encountered | Operation |
|---|
| Remove the spark plugs. Op. 5510D10 SPARK PLUGS - R+Rand check that they do not display signs of faults as indicated in the test See T SPARK PLUG STATE CHECK | Move on to Step 11 | Faults present | The test indicates the solution |
| 11 | CYLINDER COMPRESSION CHECK | All OK | Problems encountered | Operation |
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| Carry out the cylinder compression check Op. 0510A10 CYLINDER COMPRESSION - CHECK FOR LOOSE SPARK PLUGS OR INJECTORS | Move on to Step 13 | Cylinder compression insufficient | Move on to Step 12 |
| 12 | CHECK ON CAUSE OF INSUFFICIENT COMPRESSION | All OK | Problems encountered | Operation |
|---|
| R/R head for valve leakage testCheck condition of cylinders/piston rings | Move on to Step 13 | Valve seal insufficient | Overhaul the head Op. 1016E10 SINGLE CYLINDER HEAD, REMOVED - OVERHAUL |
| Cylinders/piston rings worn | Restore the seal |
| Cylinder head/cylinder block-crankcase matching faulty | Restore correct matching |
| 13 | TIMING CHECK | All OK | Problems encountered | Operation |
|---|
| Check that the valve gear timing is correct Op. 0510A20 TIMING GEAR WITH BELT DRIVE - CHECK - CARRY OUT OPERATION WITH CAM COVER(S) REMOVED AND TAPPETS ADJUSTED AND CRANKSHAFT PULLEY DETACHED (IF NECESSARY) | Move on to Step 14 | Valve gear timing not correct | Restore the correct valve gear timing |
| 14 | CHECK ON CORRECT OPERATION | All OK | Problems encountered | Operation |
|---|
| Check the fault has disappeared | End of diagnosis | The fault persists | Contact technical service for further information on the problem |
