Cruise control set+ control not working
- Make
- Alfa Romeo
- Model
- Brera and Spider Factory Service Manual
- Year
- 2005–2010
- Section
- Engine › Cruise control set+ control not working
CRUISE CONTROL SET+ CONTROL NOT WORKING
The Cruise Control system does not increase the speed when the ring nut is turned to "SET+".
For safety reasons the Cruise Control is inhibited above a maximum speed and below a minimum speed. If these speeds are exceeded the Cruise Control no longer works
| 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 | 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 4 | No voltage detected due to broken wiring | Repair the connections: | |
| 4 | 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: engine management control unit defective | Replace the engine management control unit Op. 1056F82 CONTROL UNIT SINGLE OF INJECTION IGNITION SYSTEM R R |
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