| STEP | CHECK TO BE PERFORMED | REMEDIAL ACTION IF THE CHECK IS NOT OK |
|---|
| 1 | Injection signal checkPrepare the diagnostic equipment to download a voltage graph.Select the VOLTMETER function from the INSTRUMENT menu with the time base set at 1 second.Connect disconnector AD 233 N° 1806387000 across the injector being tested and the wiringPress the START button on the diagnostic equipment to begin downloading a graph.Crank the engine and check that the signal corresponds to the attached graph | Move on to Step 2 |
| 2 | Injection wiring checkCheck the continuity of the wiring for the injection signals between the injectors and the engine control unit See E5030 PETROL ENGINES ELECTRONIC MANAGEMENT Move on to Step 3 | Restore the correct wiring between the engine control unit and the injectors.Replace the engine management control unit Op. 1056B82 INJECTION/IGNITION SYSTEM E.C.U. (ONE) - R + R |
| 3 | Injector power supply checkCheck that the injectors are correctly supplied See E5030 PETROL ENGINES ELECTRONIC MANAGEMENT Move on to Step 4 | Restore the correct power supply for the injectors |
| 4 | Injector resistance checkDisconnect the injector connectorConnect disconnector AD 233 N° 1806387000 to the injector being tested, keeping the wiring-side towards the engine control unit disconnectedConnect the Examiner in ohmmeter mode between the injector terminals and then check the resistance: the value should be 15 Ohm ± 10% at 20°C | Replace the injector Op. 1056B70 INJECTOR (ONE) - R + R WITH FUEL MANIFOLD PIPE REMOVED - INCLUDES SEAL REPLACEMNT |
