939011847 - E7065 ELECTRIC STEERING LOCK - FUNCTIONAL DESCRIPTION

FUNCTIONAL DESCRIPTION

The electric steering lock control unit M89 controls and regulates the entire electrically operated steering column lock system and also manages the vehicle access and starting system.The power supply for the control unit M89 comes, at pin C1 of M89, from the line protected by fuse F3 of the engine compartment junction unit B1, whilst pin A4 of M89 is earthed.The TEG inserted status is sent by the TEG Reader H3 via the CAN - pins 3 and 8. The same signal is sent, redundantly, to the steering lock node M89, from pin 2 and the latter, in turn, forwards it via the CAN.The TEG Reader H3 also receives a power supply - pin 6 - from the line protected by fuse F32 of the junction unit under the dashboard B2. pin 7 of H3 is earthed.The Smart Key system controls several warning lights and/or sends message signals to the instrument panel: the control unit M89 is connected via the CAN line ot the instrument panel E50 and manages the switching on of the steering lock warning light and a series of warning and failure messages shown in the instrument panel display.