|
::
ECU Fault Codes::
|
|
|
This only works on certain models but it's worth a try to see if this useulf self-diagnosis function works on your 155. If you have any queries about this technical article or wish to submit your own article please email technical@alfa155.co.uk |
|---|
|
Insert the key into the ignition and turn to "marcia", pump the accelerator pedal five times in under five seconds and wait. The injector light should start flashing a repetitive code along the following lines... oooo
- oooo - oooo - oooo = 4444 |
||
|---|---|---|
|
4-4-4-4
|
No errors |
|
|
1-2-1-1
|
Battery voltage
|
|
|
1-2-1-4
|
Engine
temperatue sensor
|
|
|
1-2-1-6
|
Throttle valve sensor
|
|
|
1-2-2-1
|
Air
flow meter
|
|
|
1-2-2-2
|
Idle actuator (opening)
|
|
|
1-2-2-3
|
Regulation of lambda probe
|
|
|
1-2-2-4
|
Heated lambda probe
|
|
|
1-2-2-5
|
Air temperature sensor
|
|
|
1-2-2-6
|
Electroinjectors (group 1)
|
|
|
1-2-3-1
|
Power ciruit (inside control unit)
|
|
|
1-2-3-2
|
Electroinjectors (group 2)
|
|
|
1-2-3-3
|
Idle actuator (closure)
|
|
|
1-2-3-5
|
Compressor inlets
|
|
|
1-2-3-6
|
Compressor command
|
|
|
1-2-4-3
|
Fuel pump relay
|
|
|
1-2-4-4
|
Vapour recovery solenoid valve
|
|
|
1-2-4-5
|
Timing variator relay (1.8 and 2.0 TS only)
|
|
|
1-2-5-1
|
Control unit EPROM
|
|
|
1-2-5-4
|
Throttle valve sensor (signal)
|
|
|
NB.
This does not work on the 2.0 16v, please advise if you find it doesn't
work on any others....
|
||
|
|
||