NO SIGNAL
Test results
1
ELECTRICAL CONNECTIONS CHECK
All OK
Problems encountered
Operation
Check for loose electrical connections at the injector connector, at the engine management control unit and at the isolating connector.
Go to Step 2
Presence of loose electrical connections.
Restore the correct connections.
2
WIRING CONTINUITY CHECK
Check for breaks in the wiring continuity
See E5030 PETROL ENGINES ELECTRONIC MANAGEMENT
Go to Step 3
Breaks in the wiring continuity.
Restore the correct continuity for the wiring.
3
WIRING INSULATION CHECK
Check the condition of the wiring insulation (short circuit to GND).
Go to Step 4
Wiring insulation faulty.
Restore correct wiring insulation.
4
INJECTOR OPERATION CHECK
Check that the injector is working properly by carrying out the
See Test 1056BA INJECTOR OPERATION CHECK
Go to Step 5
Injector not working/stuck.
Replace the injector
Op. 1056B68 SET OF INJECTORS - R + R WITH FUEL MANIFOLD PIPE REMOVED - INCLUDES SEAL REPLACEMENT
5
ENGINE MANAGEMENT CONTROL UNIT OPERATION CHECK
Check that the engine management control unit is working properly.
End of diagnosis
Engine management control unit faulty.
Replace the engine management control unit
Op. 1056B82 INJECTION/IGNITION SYSTEM E.C.U. (ONE) - R + R
ABOVE THRESHOLD
Check the condition of the wiring insulation (short circuit to Vbatt).
BELOW THRESHOLD