125000716 - W01 HIGH CO EMISSIONS
The percentage of CO and/or HC measured is higher than recommended.| Results of the tests | ||||
| 0 | PRELIMINARY CHECKS | All OK | Problems encountered | Operation |
|---|---|---|---|---|
| Check the condition of the air filter | Move on to Step 1 1 | Filter element dirty or damaged | Replace the filter element | |
| 1 | CHECK USING DIAGNOSTIC EQUIPMENT | All OK | Problems encountered | Operation |
| Connect the diagnostic test equipment (Examiner or other instruments) to the tester input.Check that there are no faults in the engine management control unit | Move on to Step 2 1 | "Fuel system" error detected | Continue following the instructions in the Table Z50 ERRORE TITOLO MISCELA | |
| "Misfire" error detected | Continue following the instructions in the Table Z53 ERRORE MANCATE ACCENSIONI | |||
| "Catalyzer" error detected | Continue following the instructions in the Table Z55 ERRORE CATALIZZATORE | |||
| "Upstream Lambda sensor" error detected | Continue following the instructions in the Table See table Z56 UPSTREAM LAMBDA SENSOR SIGNAL ERROR | |||
| "Downstream Lambda sensor" error detected | Continue following the instructions in the Table See table Z58 DOWNSTREAM LAMBDA SENSOR SIGNAL ERROR | |||
| Another error detected in the control unit | Continue following the instructions for the diagnostic equipment | |||
| No communication with the control unit | Restore the connection between the engine management control unit and the diagnostic connector See E5030 PETROL ENGINE ELECTRONIC MANAGEMENT | |||
| 2 | ACTIVE DIAGNOSIS WITH DIAGNOSTIC EQUIPMENT | All OK | Problems encountered | Operation |
Connect the diagnostic equipment (Examiner or other instruments) and carry out the active diagnosis for:
| Move on to Step 3 1 | Connections faulty | Restore connection for injectors and solenoid valve with control unit See See E5030 PETROL ENGINE ELECTRONIC MANAGEMENT | |
| Solenoid valve faulty | Replace the solenoid valve | |||
| Injector faulty | Replace the injector Op. Op. 1056B70 ELETTROINIETTORE (UNO) - S.R. A TUBO COLLETTORE COMBUSTIBILE STACCATO - COMPRENDE LA SOST. DELLA GUARNIZIONE | |||
| 3 | UPSTREAM LAMBDA SENSOR CHECK | All OK | Problems encountered | Operation |
| Check that the upstream Lambda sensor is working properly See Test 1080BA VERIFICA FUNZIONALITA'' SONDA LAMBDA A MONTE | Move on to Step 4 1 | Left Lambda sensor defective | Replace the left Lambda sensor Op. 1080B93 RIGHT UPPER LAMBDA SENSOR R R | |
| Right Lambda sensor defective | Replace the right Lambda sensor Op. 1080B92 LEFT UPPER LAMBDA SENSOR R R | |||
| 4 | DOWNSTREAM LAMBDA SENSOR CHECK | All OK | Problems encountered | Operation |
| Check that the downstream Lambda sensor is working properly See Test 1080BD VERIFICA FUNZIONALITA'' SONDA LAMBDA A VALLE | Move on to Step 5 1 | Lambda sensor defective | Replace downstream lambda sensor Op. 1080B90 LAMBDA PROBE R R | |
| 5 | AIR CIRCUIT CHECK | All OK | Problems encountered | Operation |
| Check the condition of the air supply circuit | Move on to Step 6 1 | Circuit component damaged | Replace the component involved | |
| 6 | FUEL PRESSURE CHECK | All OK | Problems encountered | Operation |
| Check the fuel supply pressure Op. 0510C10 | Move on to Step 7 1 | Pressure not correct | Replace the fuel pump | |
| 7 | CHECK CORRECT OPERATION | All OK | Problems encountered | Operation |
| Check that the fault is no longer present | End of diagnosis | |||