Workshop Manuals Factory service & repair Alfa Romeo
01 General information02 Specifications03 Manufacturing data and tolerances04 Tightening torques05 Fluids and lubricants06 Maintenance07 Diagnostic checks08 Engine09 Clutch10 Gearbox and differential11 Axles and driveshafts12 Brakes13 Steering14 Suspension and wheels15 Heating, air conditioning and auxiliary units16 Electrical equipment17 Body fittings18 Body panels and frame19 Wiring diagrams and electrical functions20 Wiring harnesses21 Connectors and pin-outs22 Fault diagnosis23 Special tools
Alfa Romeo GT Factory Service Manual (2003-2010)22 · Fault diagnosis
22 · Diagnostics

Automatic-manual shift

Make
Alfa Romeo
Model
GT Factory Service Manual
Year
2003–2010
Section
Gear shift › Automatic-manual shift
Fault diagnosisAutomatic-manual shift

AUTOMATIC-MANUAL SHIFT

1.8 T.SPARK, 2.0 JTS

The vehicle switches to manual by itself when driving in automatic

It should be remembered that operating strategies make provision to implement a gear change suggestion via the lever/buttons on the steering wheel and it remains in City mode

Results of the tests
0CONTROL UNIT ERRORS CHECKAll OKProblems metOperation

Check that there are no control unit errors. In particular:

  • No accelerator pedal information error
Continue to Step 2Presence of error signalledContinue to Step 1
1CHECKS ON FAULTS DETECTEDAll OKProblems metOperation

Check the faults according to See Test

See Test 2127I What to do for error in Selespeed control unit

End of diagnosisFaulty connectionsRepair/replace the wiring
2CITY BUTTON CHECKAll OKProblems metOperation

Check that the City button is working properly (no false contacts) following See Test

See Test 2127H CHECK ON AUTO BUTTON AUTOMATIC OPERATION SELECTION

Continue to Step 3There is no change of state and/or the ''CITY'' button is not displayedCheck the switch and the wiring Repair/replace the part that is not working
3CHECK FOR LEVER/BUTTON FALSE CONTACTS AT THE STEERING WHEELAll OKProblems metOperation
With the vehicle in CITY mode, road test it over an unmade road to check for the presence of false contacts at the leverContinue to Step 4There are spontaneous shifts from City to manualCheck the wiring and the switches/gear lever Repair/replace the part that is not working
4AFTER THE CHECK ON THE CORRECT OPERATION OF THE GEAR LEVERAll OKProblems metOperation
Check that the fault is no longer presentEnd of diagnosisThe fault persistsContact Technical Service for further information on the problem

Parts & tools for this job For 2003 Alfa Romeo GT

Links open Amazon search results in a new tab. As an Amazon Associate I earn from qualifying purchases.