The cruise control set- control is not working
- Make
- Alfa Romeo
- Model
- 159 Factory Service Manual
- Year
- 2005–2011
- Section
- Engine › The cruise control set- control is not working
THE CRUISE CONTROL SET- CONTROL IS NOT WORKING
The Cruise Control system does not decrease the speed when the ring nut is turned to "SET -".
| 0 | PRELIMINARY CHECK | ALL OK | PROBLEMS ENCOUNTERED | ACTION |
|---|---|---|---|---|
| Check, by carrying out a road test, then the vehicle speed is higher than 40 km/h when the SET- ring nut is adjusted | Move on to Step 1 | Speed below 40 Km/h | Bring the speed to above 40 Km/h | |
| 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: | |||
| 2 | CHECK USING DIAGNOSTIC EQUIPMENT | ALL OK | PROBLEMS ENCOUNTERED | ACTION |
Connect the diagnostic equipment to the engine management control unit and check that the SET- position for the lever with the correct operaiton of the Cruise Control system contacts Check the continuity of the Cruise lever contacts | Move on to Step 3 | 1.No continuity for lever contacts | 1. Replace the Cruise Control lever assembly | |
| 2. Power supply to lever interrupted | 2. Move on to Step 3 | |||
| 3 | SELECTOR CONTROL CHECK | ALL OK | PROBLEMS ENCOUNTERED | ACTION |
| Check that the Cruise Control contacts are working properly in the "-" position | Move on to Step 4 | No continuity | Replace the Cruise Control lever assembly | |
| 4 | SUPPLY CHECK | ALL OK | PROBLEMS ENCOUNTERED | ACTION |
With the ignition key in the ON position and the Cruise Control in the ON position and the ring nut at "Set-", check that there is a voltage signal from the Cruise Control to the engine management control unit: | Move on to Step 5 | No voltage detected due to broken wiring | Repair the connections: | |
| 5 | CHECK ON CORRECT OPERATION | ALL OK | PROBLEMS ENCOUNTERED | ACTION |
Check that the fault is no longer present by carrying out | End of diagnosis | The fault persists: control unit defective | Replace the engine management control unit |
Parts & tools for this job For 2005 Alfa Romeo 159
- PARTEngine gasket setSearch: Alfa Romeo 159 2005 engine gasket set
- TOOLTorque wrenchSearch: 3/8 inch torque wrench
- TOOLFeeler gauge setSearch: feeler gauge set
Links open Amazon search results in a new tab. As an Amazon Associate I earn from qualifying purchases.