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ECU Fault Codes::
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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 |
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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 |
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4-4-4-4
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No errors |
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1-2-1-1
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Battery voltage
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1-2-1-4
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Engine
temperatue sensor
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1-2-1-6
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Throttle valve sensor
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1-2-2-1
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Air
flow meter
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1-2-2-2
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Idle actuator (opening)
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1-2-2-3
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Regulation of lambda probe
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1-2-2-4
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Heated lambda probe
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1-2-2-5
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Air temperature sensor
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1-2-2-6
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Electroinjectors (group 1)
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1-2-3-1
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Power ciruit (inside control unit)
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1-2-3-2
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Electroinjectors (group 2)
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1-2-3-3
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Idle actuator (closure)
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1-2-3-5
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Compressor inlets
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1-2-3-6
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Compressor command
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1-2-4-3
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Fuel pump relay
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1-2-4-4
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Vapour recovery solenoid valve
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1-2-4-5
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Timing variator relay (1.8 and 2.0 TS only)
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1-2-5-1
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Control unit EPROM
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1-2-5-4
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Throttle valve sensor (signal)
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NB.
This does not work on the 2.0 16v, please advise if you find it doesn't
work on any others....
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