| 1 | CHECK USING DIAGNOSTIC EQUIPMENT | All OK | Problems encountered | Operation |
|---|
| Connect the diagnostic equipment (Examiner or other instruments) to the diagnostic socket.Check for the presence of faults in the engine management control unit | Move on to Step 2 | Error detected in the control unit | Continue following the instructions for the diagnostic equipment |
| No communication with the control unit | Restore the connection between the engine management control unit and the diagnostic connector See E5060 CRUISE CONTROL |
| 2 | CRUISE CONTROL SELECTOR CHECK | All OK | Problems encountered | Operation |
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| Check that the Cruise Control contacts are working properly by connecting the Examiner, carrying out See Test 5580AA CRUISE CONTROL ON/OFF CONTROL CHECK | Move on to Step 3 | Steering wheel interface lever defective | Replace the steering wheel interface lever with built-in Cruise Control Op. 5580A10 CRUISE CONTROL LEVER ASSEMBLY - R+R |
| No continuity | Restore the continuity/insulation |
| 3 | CONNECTIONS CHECK | All OK | Problems encountered | Operation |
|---|
| Check the electrical continuity of the wiring between the cruise control system control and the engine control unit See E5060 CRUISE CONTROL | Move on to Step 4 | No continuity | Repair the connections: See E5060 CRUISE CONTROL |
| 4 | CORRECT OPERATION CHECK | All OK | Problems encountered | Operation |
|---|
| Check that the fault is no longer present, by carrying out See Test 5580AE CRUISE CONTROL OPERATION ROAD TEST CHECK | End of diagnosis | The fault persists: engine control unit defective | Replace the engine management control unit Op. 1056B82 INJECTION/IGNITION SYSTEM E.C.U. (ONE) - R + R |