| CHECK TO BE PERFORMED | RESOLUTION IF THE CHECK IS NOT OK |
|---|
| 1 | Check that there are no signs of damage, incorrect fitting or leaks at the fuel supply/return pipes or at the actual tank | Repair or, if necessary, replace the faulty components |
| 2 | Insert the ignition key (panel on).Check that there is a whilstling noise in the next 2 seconds coming from the fuel pump indicating that it is activated and then the pump should be deactivated | Continue as instructed in the See Test 1040AD FUEL PUMP RELAY CHECK |
| 3 | Check the fuel level signalled by the gauge in the panel and make a note of it.Connect to the pump connector See N040 FUEL PUMP AND LEVEL GAUGE between Pins A and C and check that the resistance reading is consistent with the reading in the panel, following the instructions in the table below | Continue as instructed in the See Test 1040AC FUEL LEVEL GAUGE CHECK |
| CHECK TO BE PERFORMED | RESOLUTION IF THE CHECK IS NOT OK |
|---|
| 4 | Refit the fuel pump and check that the level on the gauge is more than 1/4 of a tank.Move on to Step 9 | Move on to Step 5 |
| 5 | Add fuel until there is at least 1/4 of a tank.Carry out a road test trying to replicate the conditions in which the customer reported the problem.Check that the following parameters do not cause sudden changes and/or values that are not consistent with the driving conditions:- accelerator pedal position- load- injection time- requested engine torque- detected engine torque- throttle angle | Continue as described by the diagnostic equipment |
| 6 | Check that the fuel filter and the fuel supply pipes are not constricted | Repair or, if necessary, replace the faulty components |
| 7 | Check that the pump electrical connections See N040 FUEL PUMP AND LEVEL GAUGE are not faulty | Restore or, if necessary, replace the electrical wiring See E5030 PETROL ENGINES ELECTRONIC MANAGEMENT |
| 8 | Check that the quality of the fuel in the tank is not poor by carrying out the See T FUEL QUALITY CHECK | The test is over. Remove the fuel from the tank and clean the actual tank |
| 9 | Press the START/STOP button (panel off). Connect a pressure gauge to the injectors. Press the START/STOP button (panel on). Check that the fuel pressure rises (whilst the pump is working) between 5.7 and 6.3 bar | Remove the constrictions in the fuel supply and/or return pipes. If necessary, replace them |
| 10 | Once the pressure has gone down again, check, within the space of a minute, that there has not been a fall in pressure of more than 0.3 bar | Continue as instructed in the See table X011 LEAKS IN FUEL FEED SYSTEM |