ELECTRIC STEERING - Functional description

Functional description

The power steering control unit M86 monitors and controls the entire electric driving system.

The control unit is supplied directly by the battery via a line protected by fuse F2 of engine bay control unit B1, at pin 1of connector A of M86.

The supply controlled by the ignition (15/54) reaches pin 1 of connector B of M86 from the line protected by fuse F24 of the engine compartment unit B1.

The pin of connector A of M86 is earthed.

Self-diagnostic data can be read by connecting the unit to connector G of Body Computer M1 - pin 11: this receives signals from pin 4 of connector A of M86. See E8010 DIAGNOSTIC MULTIPLE CONNECTOR

Control unit M86 is connected to the CAN network - pins 5, 6, 7 and 8 of connector B with the other nodes, particularly Body Computer Node M1 and instrument panel E50, which receives DUALDRIVE fault warning light signla.s

The CITY mode (less effort to turn the wheel) selection button is located in tunnel switch unit H35 and connected to control unit M86 via the CAN network throgh Body Computer M1, pin 19 of connector D.