194002431 - 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 | 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 | "Fuel system" error detected | See table Z50 ERRORE TITOLO MISCELA | |
| "Misfire" error detected | See table Z53 ERRORE MANCATE ACCENSIONI | |||
| "Catalyzer" error detected | See table Z55 ERRORE CATALIZZATORE | |||
| "Upstream Lambda sensor" error detected | See table Z56 ERRORE SEGNALE LAMBDA A MONTE | |||
| "Downstream Lambda sensor" error detected | See table Z58 ERRORE SEGNALE LAMBDA A VALLE | |||
| 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 See E5030 PETROL ENGINES 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 | Connections faulty | Restore connection for injectors and solenoid valve with control unit See See E5030 PETROL ENGINES ELECTRONIC MANAGEMENT | |
| Solenoid valve faulty | Replace the solenoid valve | |||
| Injector faulty | Replace the injector Op. Op. 1056B70 INJECTOR (ONE) - R + R WITH FUEL MANIFOLD PIPE REMOVED - INCLUDES SEAL REPLACEMNT | |||
| 3 | UPSTREAM LAMBDA SENSOR CHECK | All OK | Problems encountered | Operation |
| Check that the upstream Lambda sensor is working properly See TestSee Test 1080BA CHECK ON OPERATION OF UPSTREAM LAMBDA SENSOR | Move on to Step 4 | Left Lambda sensor defective | Replace the left Lambda sensor Op. Op. 1080B94 FRONT LAMBDA SENSOR TO WITH CATALYTIC CONVERTER - R.R | |
| Right Lambda sensor defective | Replace the right Lambda sensor Op. Op. 1080B94 FRONT LAMBDA SENSOR TO WITH CATALYTIC CONVERTER - R.R | |||
| 4 | DOWNSTREAM LAMBDA SENSOR CHECK | All OK | Problems encountered | Operation |
| Check that the downstream Lambda sensor is working properly See TestSee Test 1080BD CHECK ON OPERATION OF DOWNSTREAM LAMBDA SENSOR | Move on to Step 5 | Lambda sensor defective | Replace Lambda sensor Op. 1080B95 REAR LAMBDA SENSOR TO CATALYTIC CONVERTER - R.R | |
| 5 | AIR CIRCUIT CHECK | All OK | Problems encountered | Operation |
| Check the condition of the air supply circuit | Move on to Step 6 | Circuit component damaged | Replace the component involved | |
| 6 | FUEL PRESSURE CHECK | All OK | Problems encountered | Operation |
| Check the fuel supply pressure Op. Op. 0510C10 FUEL SYSTEM - CHECK DELIVERY PRESSURE | Move on to Step 7 | Pressure not correct | Replace the fuel pump | |
| 7 | CHECK CORRECT OPERATION | All OK | Problems encountered | Operation |
| Check that the fault is no longer present | Fault persists | Search for the fault starting from another symptom | ||