192004672 - E7065 ELECTRIC STEERING LOCK - FUNCTIONAL DESCRIPTION
Operational description
The electric steering lock control unit M89 (present if there is no ignition key/switch) controls and regulates the entire electrically controlled steering column locking system.The ignition switch H1 connectors are connected to the control unit M89, while the electric steering lock is incorporated in the actual control unit.The direct power supply for the control unit M89 arrives from the battery via the power supply for the ignition switch H1. Pin 9 of M89 is earthed.The control unit M89 is connected via the CAN - pins 1 and 7 - to the other nodes, in particular the Body Computer M1 and to the Passive Entry control unit M64.The starting button H2 sends a control signal to the control unit M89, pin 3, whilst the reference earth is sent from pin 11 and the button lighting signal is sent from pin 12.The clutch pressed signal arrives from the switch I31 (or, on versions with a robotized gearbox, from the starting enablement switch on the brake pedal I34) at pin 8 of M89, thereby excluding preventing starting if the clutch is not pressed.The Passive Entry RF aerial P99 is connected to pins 19 and 40 of M64; it manages the GARAGE function when the CID battery is run down. The control unit M64 is connected to M89 via the CAN, but also through a direct line, from pin 7 of M84 to pin 2 of M89. The power supply for the ignition switch H1 arrives via a line protected by fuse F3 of the engine compartment junction unit B1 at pin 1 of connector A of H1 .The commands which are traditionally produced by the various key positions leave from there:
- in the ON position, numerous protected ignition-operated circuits and services are supplied (INT and 15/54): pin 2 connector B and pin 1 connector A;
- the starter motor (line 50) is operated in AVV position See E5010 STARTING AND RECHARING; several circuits are disconnected in this position (INT/A line): 1 of connector B.