184002015 - E3030 DEMISTING REARSCREEN AND REAR VIEW MIRRORS - FUNCTIONAL DESCRIPTION (HIGH trim level)

Operational description

The heated rear windscreen relay T11, located in the junction unit under the dashboard B2, controls the engagement of the heated rear windscreen defrosting function P55 via the line protected by fuse F40 of junction unit B2.The coil for relay T11 receives an ignition-controlled supply (INT/A) and is energized by an earth signal coming from the Body Computer M1 pin 6 of connector F; this signal is sent on the basis of the control logic illustrated previously and in the presence of the earth signal at pin 32 connector G of M1 coming from the heated rear windscreen on button or from the MAX-DEF function. This signal comes from the climate control system control unit M70 to which the signal for switching on the LED is sent from pin 21 of connector H of M1.The engagement of the defrosting resistances for the door mirrors P60 and P61 is controlled by the control units for the driver''s door M66 and passenger door M67 connected via the CAN line to the Body Computer M1.The control units M66 and M67 receive a supply - at pin 11 of connector E - from the line protected by fuse F32 of the junction unit under the dashboard B2On the basis of the complex control logic illustrated previously, the engagement command for the defrosting is sent via the CAN to the two door control units as well which control the resistances located in mirrors P60 and P61 from pins 7 and 9 of connector D of M66 and M67.