City -> Manual change-over

Troubleshooting table Symptom/conditions: City -> Manual change-over
 
  • When travelling in automatic mode the car changes to manual on its own
 

PRELIMINARY NOTE
It is to be remembered that it is envisaged in the functional strategy:

  • For Alfa 156 F2, 156 F3 and 147 that when a gear change is requested by lever/buttons on the steering wheel, the change-over is made from City to Manual
  • For Alfa 156 JTS when a gear change is requested by lever/buttons on the steering wheel, the system uses the gear suggestion strategy and remains in City modeCity
DIAGNOSTICS
Test results
Step Operations
0
Check ECU errors
All OK
Problems found
Intervention
 

Check ECU for absence of errors. Specifically check for:

  • No accelerator pedal message error
 Go to step 2 Presence of one or more errors included in the list Go to step 1
1
Check problems found
All OK
Problems found
Intervention
  Check problems according to Procedure 17 End of procedure The problem persists Go to step 2
2
Auto button check
All OK
Problems found
Intervention
 

Check that the City button functions correctly (no false contacts) following Procedure 9

 Go to step 4 The button is not functioning correctly Check conditions of connections and wiring. Restore/replace broken parts. Go to step 3.
3
After checking correct functioning of the auto button
All OK
Problems found
Intervention
  Check that the problem is no longer present. End of procedure The problem persists Go to step 4
4
Check for presence of false contacts on lever/steering wheel buttons
All OK
Problems found
Intervention
  Check functioning of lever on the road     With the car in City, mode, test on a rough road to discover if there are any false lever contacts . Continue with step 5.
5
After the road test
All OK
Problems found
Intervention
  According to the results of the test. Go to step 7 Spontaneous change-overs from City to Manual have taken place Check the condition of the lever/ buttons, the connections and the wiring . Restore/replace the part that is not functioning properly. Continue with step 6
6
After checking the lever functions properly
All OK
Problems found
Intervention
  Check that the problem is no longer present. End of procedure The problem persists Go to step 7
7
The problem persists
All OK
Problems found
Intervention
        Contact technical assistance for additional information on the problem