Cruise control not working under any conditions
- Make
- Alfa Romeo
- Model
- Brera and Spider Factory Service Manual
- Year
- 2005–2010
- Section
- Engine › Cruise control not working under any conditions
CRUISE CONTROL NOT WORKING UNDER ANY CONDITIONS
The Cruise Control system controls do not work under any circumstances
| 1 | CHECK USING DIAGNOSTIC EQUIPMENT | ALL OK | PROBLEMS ENCOUNTERED | ACTION |
|---|---|---|---|---|
Connect the diagnostic test equipment (Examiner or other instruments) to the tester input. Check for the presence of faults in the engine management control unit | Move on to Step 2 | 1. Error detected in the control unit | 1. Continue following the instructions for the diagnostic equipment | |
| 2. No communication with the control unit | 2. Restore the connection between the engine management control unit and the diagnostic connector: wiring diagram | |||
| 2 | CRUISE CONTROL SELECTOR CHECK | ALL OK | PROBLEMS ENCOUNTERED | ACTION |
Check that the Cruise Control contacts are working properly | Move on to Step 3 | No continuity | Replace the Cruise Control lever assembly | |
| 3 | SUPPLY CHECK | ALL OK | PROBLEMS ENCOUNTERED | ACTION |
With the ignition key in the ON position and the Cruise Control ON, check that there is a voltage signal from the Cruise Control to the engine management control unit: | Move on to Step 4 | 1.No voltage detected | 1.Repair the connections: | |
| 2.Wiring interrupted | 2.Replace the fuse after having eliminated the cause | |||
| 4 | CONNECTIONS CHECK | ALL OK | PROBLEMS ENCOUNTERED | ACTION |
Check the electrical continuity of the wiring between the junction unit, ignition switch, engine management control unit and Cruise Control system control: | Move on to Step 5 | No continuity | Repair the connections: | |
| 5 | CHECK ON CORRECT OPERATION | ALL OK | PROBLEMS ENCOUNTERED | ACTION |
| Check that the fault is no longer present | End of diagnosis | The fault persists: control unit defective | Replace the engine management control unit Op. 1056F82 CONTROL UNIT SINGLE OF INJECTION IGNITION SYSTEM R R |
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