| | Results of the tests |
| 1 | CHECK WITH DIAGNOSTIC EQUIPMENT | All OK | Problems met | Operation |
|---|
| Connect the diagnostic equipment (Examiner or other instruments) to the diagnostic socket.Check that there are no faults in the engine management control unit | Continue to Step 2 | An error is detected in the control unit | Proceed according to the instructions of the diagnostic equipment |
| Lack of dialogue with the control unit | Restore the connection between the engine management control unit and the diagnostic connector See E5060 CRUISE CONTROL |
| 2 | CHECK CRUISE CONTROL SELECTOR | All OK | Problems met | Operation |
|---|
| Check that the Cruise Control contacts are working | Continue to Step 3 | Lack of continuity | Replace the stalk unit lever with built-in Cruise Control system control Op. 5580A10 |
| 3 | CHECK ON SUPPLY | All OK | Problems met | Operation |
|---|
| With the ignition and Cruise Control on, check that there is a voltage signal from the Cruise Control system control to the engine management control unit: See E5060 CRUISE CONTROL | Continue to Step 4 | No voltage found | Restore the connections See E5060 CRUISE CONTROL |
| 4 | CHECK ON CONNECTIONS | All OK | Problems met | Operation |
|---|
| Check the electrical continuity of the wiring between the junction unit, ignition switch, engine management control unit and Cruise Control system control unit. See E5060 CRUISE CONTROL | Continue to Step 5 | Lack of continuity | Restore the connections See E5060 CRUISE CONTROL |
| 5 | CHECK ON CORRECT OPERATION | All OK | Problems met | Operation |
|---|
| 1.2 16v1.4 16v | Check that the fault is no longer present | End of diagnosis | The fault persists: control unit defective | Replace the engine management control unit Op. 1056B82 |
| 1.3 JTD 16v | Check that the fault is no longer present | End of diagnosis | The fault persists: control unit defective | Replace the engine management control unit Op. 1060G80 |