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WIRING DIAGRAM - CODE - Alfa Romeo 159 1.8 Da 01/06
COMPONENTS - CODE - Alfa Romeo 159 1.8 Da 01/06
| Component code | Description | Reference to the operation |
| B002 | JUNCTION UNIT UNDER DASHBOARD | |
| B099 | MAXIFUSE BOX ON BATTERY | |
| C020 | PASSENGER SIDE DASHBOARD EARTH | - |
| E050 | INSTRUMENT PANEL | |
| H003 | IGNITION DEVICE | |
| M001 | BODY COMPUTER | |
| M010 | ENGINE MANAGEMENT ECU | |
| M089 | STEERING LOCK CONTROL UNIT (NBS) |
COMPONENT LOCATION - CODE - Alfa Romeo 159 1.8 Da 01/06
| Component code | Description | Reference to the operation |
| B002 | JUNCTION UNIT UNDER DASHBOARD | |
| B099 | MAXIFUSE BOX ON BATTERY | |
| C020 | PASSENGER SIDE DASHBOARD EARTH | - |
| E050 | INSTRUMENT PANEL | |
| H003 | IGNITION DEVICE | |
| M001 | BODY COMPUTER | |
| M010 | ENGINE MANAGEMENT ECU | |
| M089 | STEERING LOCK CONTROL UNIT (NBS) |
DESCRIPTION - CODE - Alfa Romeo 159 1.8 Da 01/06
To increase protection against theft attempts, an engine immobilizer system known as the ALFA ROMEO CODE is used.The CODE system only allows the engine to be started by means of the engine managementn control unit after a secret code, memorized previously, is received.The Code system control unit is incorporated in the Body Computer and also includes:- C CAN line for dialogue with the Body Computer and the engine management control unit;- two-way serial line for recovery (W line);- TEG electronic key containing a transponder with a secret code;- an aerial that reads the code in the TEGs, located in the TEG Reader;- engine management control unit.The CODE allows the start of the engine management by the engine management control unit by means of a coded dialogue between the Body Computer and the engine management control unit during the stage prior to starting.After key on - i.e. with the TEG correctly inserted in the TEG Reader - the engine management control unit sends a code reques to the Body Computer, which responds only after it has identified (via its aerial) the presence of a known TEG in the TEG Reader.If the secret code in the answer is valid, the engine management control unit continues with the regular engine management activities, allowing the engine to be started up.If the transponder is not recognized, the steering lock node does not release the steering.Operation of the CODE is guaranteed if any of the other Body Computer functions are not working properly.After recognizing an enabled transponder, the CODE switches off any alarm system.The function also includes the display of the status by means of the CODE warning light in the instrument panel, connected via the CAN, coming on.The function also includes the display of the status by means of the CODE warning light in the instrument panel, connected via the CAN, coming on.
FUNCTIONAL DESCRIPTION - CODE - Alfa Romeo 159 1.8 Da 01/06
The CODE unit inside the Body Computer M1 is supplied by the battery from the line for the maxifuse in B99 - pin 18 of connector F and by the line protected by fuse F39 - pin 17 of connector F; the ignition-controlled supply (INT) reaches pin 9, from connector F.The line leaving pin 29 of connector B of M1 is the W serial line connected with the engine management control unit M10 through which the key recognition dialogue and exchange of codes in recovery mode takes place.In the case of normal operation, this dialogue takes place via the CAN.The Body Computer M1 is connected via the CAN line to the instrument panel E50 to manage the "CODE failure" warning light.The TEG Reader H3 recognizes the insertion of a known TEG and sends information via the CAN - pins 3 and 8.The same signal is sent in a redundant manner to the steering lock node M89, from pin 2, and the latter sends it, in turn, via the CAN, to the Body Computer M1 and to the other nodes involved.
