841005604 - E7021 ASR / TCS OPERATIONAL DESCRIPTION

Operational Description

The braking control unt M051 is supplied directly by the battery (at pins 12 and 25) by the lines protected by fuses F02 and F04 of the engine compartment junction unit B001.The supply controlled by the ignition (INT) reaches pin 23 via the line protected by fuse F42 of the junction unit under the dashboard B002.The control unit is earthed at pins 11 and 24.The four sensors K070, K071, K075 and K076 send the speed signals for each wheel to the braking control unit M051 at pins 19, 20, 7, 8, 21, 22, 9 and 10, respectively.Pins 26 and 27 of connector A of the engine management control unit M010 receive the brake pedal pressed signals coming from the N.C. and N.A. contacts of the brake lights switch I030, respectively, with the supply controlled by the ignition (INT) from the lines protected by fuses F35 and F37 of the junction unit under the dashboard B002.The engine management control unit M010 distributes the brake pedal pressed signal to the other control units installed on the vehicle via the C-CAN line, pins 12 and 29 connector A.The ASR OFF control button, located in the control panel on the tunnel H036, sends the switching off signal to pin 3 of the braking control unit M051, whilst pin 4 resends the operating signal for the LED, also located in the control panel H036, which lights up when the system is switched off.The discreet speedometer signal is sent, from pin 16 of the braking control unit M051, to the Body Computer M001, pin 7 connector A; this signal is also transmitted via the C-CAN from pins 1 and 2 of the braking control unit M051.The C-CAN connection at pins 13 and 14 allows the connection with the engine management control unit M010 (pins 12 and 29) in order to manage the power of the engine in relation to the ASR function.Still via the C-CAN line, the braking control unit M051 is connected to the Body Computer M001 (pins 32 and 33 connector B) and through it to the instrument panel E050 to manage the VDC failure warning light and the display message.The ASR off LED and control both receive a positive signal controlled by the ignition (INT) at pin 2 of the control panel H036 coming from the line protected by fuse F49 of the junction unit under the dashboard B002.