1

Injection signal check

Prepare the diagnostic instrument for the download of a voltage graph. Select the VOLTMETER function from the INSTRUMENTS menu and select a timebase of 1 second.

Connect the probes between the pins of the injector that is not working (using disconnector AD 233 N° 1806387000). Press the "START" button on the diagnosis equipment to begin downloading a graph. Start the engine and check that the signal is the same as in the attached graph.

Restore the wiring between the engine management control unit and the injectors. If the signal is interrupted at the control unit output replace the engine management control unit

   Op. 1056B82 INJECTION/IGNITION SYSTEM E.C.U. (ONE) - R + R

2

Injector power supply check

Check that the injectors are correctly supplied

Go to Step 3

Renew the 15A fuse F22 in the engine compartment junction unit after having identified the cause of the problem. Restore the correct power supply for the injectors

3

Injector resistance check

Disconnect the connector for the injector

Connect the Examiner in ohmmeter mode between the injector terminals and then check the resistance: the value should be 12 Ohm ± 10% at 20°C

Replace the injector

   Op. 1056B70 INJECTOR (ONE) - R + R WITH FUEL MANIFOLD PIPE REMOVED - INCLUDES SEAL REPLACEMNT