3363761 - E3030 HEATED REAR WINDSCREEN AND DOOR MIRROR DEFROSTING - Functional description

Functional description

The heated rear windscreen relay T11, located in the underdashboard control unit B2 , controls the simultaneous activation of the defrosting function for both the heated rear windscreen P55 - line protected by fuse F40 - and the defrosting coils for the rearscreen washer O50 and 051 - line protected by fuse F41. The supply for the coil for relay T11 is 'controlled by the ignition' (INT/A) and is energized by an earth signal coming from the Body Computer M1 - pin 6 of connector F; this signal is sent according to the complex control logic described previously and, in particular, when a signal arrives - at pin 32 of connector G of M11 - from the heated rear windscreen button pressed or MAX-DEF function on; This signal comes from climate control unit H80 , which receives the feedback signal for activation of the relevant led - from pin 21 of connector H of M1 -. This signal comes from climate control system ECU M70 , and is returned to the same ECU. the feedback signal for activation of the relevant led via CAN line. Activation of door mirror demister coils P60 and P61 is controlled by driver side door control unit M66 and passenger door control unit M67 , connected via the CAN line to Body Computer M1 . Control units M66 and M67 are supplied at pin 11 of connector D - from a line protected by fuse F32 of underfacia control unit B2 On the basis of the complex strategy described previously, the demister acivation control is sent via the CAN network also to the two door control units that control the coils in the mirrors P60 and P61 - from pins 7 and 9 of connector E of M66 and M67 . The low outside temperature signal, which switches on the automatic defrosting, detected by a sensor inside the external rear view mirror P60 , also reaches the driver door control unit M66 - pin 2 and 6 of connector E - via the CAN line.