CODE - Functional description

Functional description

The CODE unit inside Body Computer M1 is supplied from the battery from the line for fuse F1 of B1 pin 18 of connector F, while the ignition-operated power supply (INT) reaches pin 9.

The line leading from pin 29 of connector B of the Body Computer M1 is a serial line W leading to engine management unit M10 - which is responsible for the communication required for identifying the key and exchanging codes. This communication takes place via the CAN network in the case of normal operation from pins 36 and 37 of connector B of M1.

Body Computer M1 is linked to instrument panel E50, via the CAN line to manage the CODE failure warning light: if there is a system failure or an unprogrammed system is detected, the information is also shown on the display.

The aerial of CODE device P91 is connected via two leads to the CODE unit of M1, at pins 4 and 5 of connector A; The aerial is located coaxially on the ignition switch so that it can register key insertion and activation.