3022754 - W01 HIGH CO EMISSIONS
The percentage of CO and/or HC is higher than the recommended figure.| Results of the tests | ||||
| 0 | PRELIMINARY CHECKS | All OK | Problems met | Operation |
|---|---|---|---|---|
| Check the condition of the air filter | Continue to Step 1 | Filter element dirty or damaged | Replace the filter element | |
| 1 | CHECKING WITH DIAGNOSTIC EQUIPMENT | All OK | Problems met | Operation |
| Connect diagnostic equipment (Examiner or other instruments) to the diagnostic socket.Check that there are no faults in the engine management control unit | Continue to Step 2 | 'Fuel system' error appears | See table Z50 MIXTURE STRENGTH ERROR | |
| 'Misfiring' error appears | See table Z53 MISFIRE ERROR | |||
| 'Catalytic converter' error detected | See table Z55 CATALYZER ERROR | |||
| 'Upstream lambda sensor' error detected | See table Z56 UPSTREAM LAMBDA SENSOR SIGNAL ERROR | |||
| 'Downstream lambda sensor' error detected | See table Z58 DOWNSTREAM LAMBDA SENSOR SIGNAL ERROR | |||
| Another error dected in the control unit | Continue following the instructions for the diagnostic equipment | |||
| Lack of dialogue 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 met | Operation |
Using the diagnostic equipment (Examiner or other instruments) carry out active diagnosis on the:
| Continue to Step 3 | Connections faulty | Restore the connection of the injectors and the solenoid with the control unit See E5030 PETROL ENGINE ELECTRONIC MANAGEMENT | |
| Solenoid valve faulty | Replace the solenoid valve | |||
| injector anomaly | Replace injector Op. 1056B70 | |||
| 3 | UPSTREAM LAMBDA SENSOR CHECK | All OK | Problems met | Operation |
| Check that the upstream Lambda sensor is working properly See Test 1080BA CHECK ON UPSTREAM LAMBDA SENSOR OPERATION' | Continue to Step 4 | Lambda sensor defective | Replace the Lambda sensor Op. 1080B94 | |
| 4 | DOWNSTREAM LAMBDA SENSOR CHECK | All OK | Problems met | Operation |
| Check that the downstream Lambda sensor is working properly See Test 1080BD CHECK ON DOWNSTREAM LAMBDA SENSOR OPERATION' | Continue to Step 5 | Lambda sensor defective | Replace the Lambda sensor Op. 1080B95 | |
| 5 | CHECKING AIR CIRCUIT | All OK | Problems met | Operation |
| Check the condition of the air supply circuit | Continue to Step 6 | Circuit component damaged | Replace the component involved | |
| 6 | CHECKING FUEL PRESSURE | All OK | Problems met | Operation |
| Check the fuel supply pressure Op. 0510C10 | Continue to Step 7 | Pressure not correct | Replace the fuel pump | |
| 7 | CHECKING CORRECT OPERATION | All OK | Problems met | Operation |
| Check that the fault is no longer present | Fault persists | Search for the fault starting from another symptom' | ||
| Results of the tests | ||||
| 0 | PRELIMINARY CHECKS | All OK | Problems met | Operation |
|---|---|---|---|---|
| Check the condition of the air filter | Continue to Step 1 | Filter element dirty or damaged | Replace the filter element | |
| 1 | CHECKING WITH DIAGNOSTIC EQUIPMENT | All OK | Problems met | Operation |
| Connect diagnostic equipment (Examiner or other instruments) to the diagnostic socket.Check that there are no faults in the engine management control unit | Continue to Step 2 | 'Fuel system' error appears | See table Z50 MIXTURE STRENGTH ERROR | |
| 'Misfiring' error appears | See table Z53 MISFIRE ERROR | |||
| 'Catalytic converter' error detected | See table Z55 CATALYZER ERROR | |||
| 'Upstream lambda sensor' error detected | See table Z56 UPSTREAM LAMBDA SENSOR SIGNAL ERROR | |||
| 'Downstream lambda sensor' error detected | See table Z58 DOWNSTREAM LAMBDA SENSOR SIGNAL ERROR | |||
| Another error dected in the control unit | Continue following the instructions for the diagnostic equipment | |||
| Lack of dialogue 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 met | Operation |
Using the diagnostic equipment (Examiner or other instruments) carry out active diagnosis on the:
| Continue to Step 3 | Connections faulty | Restore the connection of the injectors and the solenoid with the control unit See E5030 PETROL ENGINE ELECTRONIC MANAGEMENT | |
| Solenoid valve faulty | Replace the solenoid valve | |||
| injector anomaly | Replace injector Op. 1056B70 | |||
| 3 | UPSTREAM LAMBDA SENSOR CHECK | All OK | Problems met | Operation |
| Check that the upstream Lambda sensor is working properly See Test 1080BA CHECK ON UPSTREAM LAMBDA SENSOR OPERATION' | Continue to Step 4 | Left Lambda sensor faulty | Replace the left Lambda sensor Op. 1080B93 | |
| Right Lambda sensor faulty | Replace the right Lambda sensor Op. 1080B92 | |||
| 4 | DOWNSTREAM LAMBDA SENSOR CHECK | All OK | Problems met | Operation |
| Check that the downstream Lambda sensor is working properly See Test 1080BD CHECK ON DOWNSTREAM LAMBDA SENSOR OPERATION' | Continue to Step 5 | Lambda sensor defective | Replace the Lambda sensor Op. 1080B90 | |
| 5 | CHECKING AIR CIRCUIT | All OK | Problems met | Operation |
| Check the condition of the air supply circuit | Continue to Step 6 | Circuit component damaged | Replace the component involved | |
| 6 | CHECKING FUEL PRESSURE | All OK | Problems met | Operation |
| Check the fuel supply pressure Op. 0510C10 | Continue to Step 7 | Pressure not correct | Replace the fuel pump | |
| 7 | CHECKING CORRECT OPERATION | All OK | Problems met | Operation |
| Check that the fault is no longer present | Fault persists | Search for the fault starting from another symptom' | ||