3022584 - D10 ENGINE IDLE IRREGULAR
-| Results of the tests | ||||
| 0 | PRELIMINARY CHECKS | All OK | Problems met | Operation |
|---|---|---|---|---|
Preliminarily check:
| Continue to Step 1 | Air filter blocked | Replace the filter element Op. 1048A14 | |
| Fault in air intake circuit | Restore the correct operation of the intake circuit | |||
| 1 | CHECKING WITH DIAGNOSTIC EQUIPMENT | All OK | Problems met | Operation |
| Connect
the diagnostic equipment (Examiner or other instruments) to the
diagnostic socket. Check:
| Continue to Step 2 | 'Supply system' error detected | Continue as instructed in the Table See table Z50 MIXTURE STRENGTH ERROR | |
| Another error dectected in the control unit | Continue following the instructions for the diagnostic equipment | |||
| Inconsistent parameter | Continue following the instructions for the diagnostic equipment | |||
| 2 | PETROL VAPOUR RECOVERY SYSTEM CHECK | All OK | Problems met | Operation |
| Check the condition and the seal of the pipe between the canister solenoid valve and the intake manifold | Continue to Step 3 | Air seepage | Restore the correct seal | |
| Pipe between solenoid valve and manifold damaged | Replace the pipe | |||
| 3 | PETROL VAPOUR RECOVERY SOLENOID VALVE CHECK | All OK | Problems met | Operation |
| Carry out active diagnosis of solenoid | Continue to Step 5 | Solenoid not working | Continue to Step 4 | |
| 4 | SOLENOID VALVE ELECTRICAL CIRCUIT CHECK | All OK | Problems met | Operation |
| Check supply and earth of petrol vapour recovery solenoid See E5030 PETROL ENGINE ELECTRONIC MANAGEMENT | Continue to Step 5 | Solenoid valve faulty | Replace the solenoid valve Op. 1080E28 | |
| Connections not correct | Restore the connections See E5030 PETROL ENGINE ELECTRONIC MANAGEMENT | |||
| 5 | BRAKE SERVO AND PIPE CHECK | All OK | Problems met | Operation |
| Check the condition of the brake servo vacuum pipes;Check the operation of the single-active valve and the brake servo See Test 3330DA Check operation of brake servo | Continue to Step 6 | Brake servo pipe defective | Replace the pipe | |
| Brake servo defective | Replace the brake servo/pump assembly | |||
| 6 | CHECK ON FUEL PRESSURE | All OK | Problems met | Operation |
| Check the fuel supply pressure Op. 0510C10 | Continue to Step 7 | Insufficient fuel pressure: pipe obstructed | Eliminate the blockage; if necessary replace the pipe | |
| Low fuel pressure: defective pump | Replace the pump assembly Op. 1040A70 | |||
| 7 | CHECK ON TIMING | All OK | Problems met | Operation |
| Check that the timing is correct | Continue to Step 8 | Timing not correct | Restore the correct timing | |
| 8 | CHECK ON CORRECT OPERATION | All OK | Problems met | Operation |
| Check that the fault is no longer present | End of diagnosis | Fault persists: control unit faulty | Replace control unit Op. 1056B82 | |