Workshop Manuals Factory service & repair Alfa Romeo
01 Introduction and contents02 Vehicle characteristics and maintenance03 Engine – mechanical (Twin Spark)04 Fuel system (Twin Spark)05 Ignition, starting and charging (Twin Spark)06 Engine cooling (Twin Spark)07 Engine – mechanical (V6)08 Fuel system (V6)09 Ignition, starting and charging (V6)10 Engine cooling (V6)11 Electrical diagnosis – introduction and wiring diagram guide12 Electrical 01 – Power supply13 Electrical 02 – Fusebox14 Electrical 03 – Location of grounds15 Electrical 04 – Sidelights16 Electrical 05 – Main and dipped beam headlights17 Electrical 06 – Headlight alignment adjustment18 Electrical 07 – Rear and front fog lamps19 Electrical 08 – Direction indicators and hazard warning lights20 Electrical 09 – Stop lights21 Electrical 10 – Reversing lights22 Electrical 11 – Day lights23 Electrical 11A – Dim-dip device24 Electrical 12 – Interior lighting25 Electrical 13 – Instrument panel26 Electrical 14 – Check panel27 Electrical 15 – Provision for radio28 Electrical 15A – Radio system29 Electrical 16 – Cigar lighter30 Electrical 17 – Horns31 Electrical 18 – Windscreen wipers and washers, headlight washers32 Electrical 19 – Heated rear window and heated door mirrors33 Electrical 20 – Boot release control34 Electrical 21 – Door locking system35 Electrical 21A – Remote control door locking36 Electrical 21B – Anti-theft device37 Electrical 22 – Front power windows38 Electrical 22A – Front power windows (one-touch version)39 Electrical 23 – Rear power windows40 Electrical 24 – Adjustable heated seats41 Electrical 25 – Sunroof42 Electrical 26 – Heating, ventilation and air conditioning43 Electrical 27 – Starting and charging44 Electrical 28 – Engine cooling fan45 Electrical 29 – Motronic ignition and injection46 Electrical 29A – Alfa Romeo CODE immobiliser47 Electrical 30 – ABS48 Electrical 31 – Controlled damping suspension49 Electrical diagnosis – components key50 Clutch51 Gearbox and differential52 Axle shafts53 Front suspension54 Brakes55 Steering56 Rear suspension57 Wheels and tyres58 Electrical system59 Instrument panel and electronic instruments60 Bodywork61 Doors62 Boot and bonnet63 Interior trim64 External trim65 Heating and ventilation
Alfa Romeo 155 Factory Service Manual (1992-1998)46 · Electrical 29A – Alfa Romeo CODE immobiliser
46 · Electrical

Recovery proce-

Make
Alfa Romeo
Model
155 Factory Service Manual
Year
1992–1998
Section
Recovery procedures › Recovery proce-
Electrical 29A – Alfa Romeo CODE immobiliserRecovery proce-

RECOVERY PROCE-

The emergency procedures should be carried out, when it is not possible to start the engine with the keys available.

This procedure requires the possession of the Code Card; with the corresponding ELECTRONIC CODE (5-figure code written on the card). The procedure, (carried out either with the Alfa Tester or with the accelerator pedal) consists in entering the ELECTRONIC CODE directly in the injection control unit.

This procedure makes it possible to start the engine only once; the procedure must be repeated to start the engine again (or a "known" key must be inserted, i.e. already memorised in the control unit).

Emergency starting procedure (using the accelerator pedal)

This procedure should be carried out using the accelerator pedal and carefully watching the indications of the injection control unit warning light.

  • Turn the key to MARCIA
  • Press the accelerator pedal and keep it pressed until the warning light goes out.
  • When the warning light goes out release the accelerator pedal.
  • At this point the warning light begins to flash; after the number of flashes corresponding to the first number of the code on the Code Card (ELECTRONIC CODE) depress the accelerator pedal completely.
  • The warning light turns on and stays on for 4 seconds then it goes out.
  • When the warning light goes out, release the accelerator pedal
  • The warning light starts to flash again, after the number of flashes corresponding to the second number of the ELECTRONIC CODE, press the accelerator fully home again.
  • Proceed in the same way for the other numbers of the ELECTRONIC CODE.
  • Also after the last number, keep the accelerator pressed until the warning light goes out (appr. 4 seconds)
  • Release the accelerator pedal.

If the warning light flashes quickly, it means that the operation has been carried out correctly, thus the car can be started; if the warning light stays on, the code has not been entered correctly, move the key to STOP and back to MARCIA again, and repeat the procedure.

EXAMPLE: ELECTRONIC CODE = "42173"

Throttle switch position diagram showing ON and OFF states
Timing chart showing warning light flashes corresponding to code digits 4, 2, 1, 7, 3

NOTE: If this procedure is not activated correctly, check the throttle potentiometer and the corresponding wiring, and also the throttle itself (throttle stroke without obstacles or sticking); also check the supply to the C.C.M..

Parts & tools for this job For 1992 Alfa Romeo 155

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