3315606 - E3030 HEATED REAR WINDSCREEN AND DOOR MIRROR DEFROSTING - Functional description (Right hand drive)
Functional description
The heated rear windscreen relay
T23
of B45 controls the engagement of the heated rear windscreen P55
defrosting function.
Relay
T22 of B45 controls the simultaneous
engagement of the defrosting function for the door mirrors P60 and
P61 and the windscreen P56.
Relays
T22 and T23 of B45 are supplied
by the direct line from the battery and energized by an earth signal,
with a timer, coming from control unit M40 pin 15 of connector C
with the supply sent to resistances P55, P56, P60 and P61 via the
lines protected by fuse s F64, F68 and F59 of B45, respectively.
Control unit
M40 receives an earth signal
for defrosting engagement at pin 10 of connector B from pin 9 of
connector B of control unit M70.
Control unit
M70, in turn, receives the
return signal to switch on the 'heated rear windscreen on' LED at
pin 11 of connector C from pin 14 of connector C of M40.
The control unit
M70 is supplied at pin
11 of connector B from the ignition-controlled line (INT/A) of relay
T8 of B1 protected by fuse F3 of junction unit B2.