312000565 - D021 ENGINE CUTS OUT WHILST RUNNING AND THEN RESTARTS
 | The engine cuts out while in motion; it is possible to restart it. |
| Test results | ||||
| 0 | PRELIMINARY CHECKS | All OK | Problems encountered | Operation |
|---|---|---|---|---|
Check the following, in order:
| Move on to Step 1 | 1. Battery fastenings slack or oxidized2. Control unit earth cable fastening loose3. Incorrectly connected engine control unit connector | 1. Restore correct fastenings2. Tighten earth cable3. Correctly engage engine control unit connector | |
| 1 | CHECK USING DIAGNOSTIC EQUIPMENT | All OK | Problems encountered | Operation |
Connect the diagnostic equipment (Examiner or other instruments) to the diagnostic socket and check:
| Move on to Step 2 | 1. Error detected in the control unit.2. Impossible to activate a dialogue with the control unit | 1. Continue following the instructions on the diagnostic equipment2. Move on to Step 2 | |
| 2 | ROAD TEST USING DIAGNOSTIC EQUIPMENT | All OK | Problems encountered | Operation |
Carry out a road test reproducing the conditions in which the fault occurs, keeping the diagnostic equipment connected and check:
| Move on to Step 3 | 1. The sudden onset of errors in the control unit is detected2. Parameters off the scale.3. Loss of dialogue between the control unit and the diagnostic equipment. | 1. Continue following the instructions on the diagnostic equipment2. Continue following the instructions on the diagnostic equipment3. Restore the correct connections. | |
| 3 | IGNITION SYSTEM CHECK | All OK | Problems encountered | Operation |
| Check the continuity of the supply wiring for the coilsCheck that the ignition coils are working, by carrying out the See Test 5510CI IGNITION COIL OPERATION CHECK, the See Test 5510CE IGNITION CONTROL SIGNAL CHECKand the See Test 5510OA IGNITION COIL RESISTANCE CHECK | Move on to Step 4 | 1. Power supply wiring to coils defective2. Defective coils. | 1. Restore correct wiring2. Replace coils Op. 5510D10 SPARK PLUGS - R+R | |
| 4 | INJECTION SYSTEM CHECK | All OK | Problems encountered | Operation |
| Check the continuity of the supply wiring See E5030 PETROL ENGINES ELECTRONIC MANAGEMENT | Move on to Step 5 | Power supply wiring to injectors defective | Restore correct wiring. | |
| 5 | CORRECT OPERATION CHECK | All OK | Problems encountered | Operation |
| Check that the engine control unit is working properly. | End of diagnosis | Engine management control unit defective. | Replace the engine management control unit Op. 1056B82 INJECTION/IGNITION SYSTEM E.C.U. (ONE) - R + R | |