3239483 - E6020 AIR CONDITIONING - Functional description (Manual Air Conditioning)
Functional description
The climate control unit
M70 supply is
controlled by the ignition (INT/A) - pin 8 of connector A - from
the line protected by fuse F6 of the additional fuse box B98.
is
supplied directly at pin 4 of connector A from the line protected
by fuse
F10 of the junction unit B1.
Climate control unit
M70 also receives
a supply controlled by the ignition (INT) at pin 7 of connector
A from the line protected by fuse F4 of the additional fuse box
B98B.
The supply for illuminating the controls
with the side lights on reaches pin 5 of connector A from the line
coming from the switch for the steering column switch unit
H5
protected by fuse F1 of the additional fuse box B98B.
Pin 3 of connector A of
M70 is earthed.
The air conditioning system is equipped
with three activators for recirculation (
N82), air mixing (N81)
and air distribution (N80).
The recirculation actuator
N82 is operated
by the control unit M70 from pins 18, 19, 20 and 21 of connector
A.
The air mixing actuator
N81 is controlled
from control unit M70 from pins 10, 11, 12, 13 of connector B.
The distribution actuator
N80 is controlled
from control unit M70 from pins 23, 24, 25 and 26 of connector B.
An electronic governer
M72 controls fan
N85 at different speeds via an earth command: this is ignition-operated
(INT/A) from a line protected by fuse F6 of supplementary fuse box
B98B.
receives an control input signal from pin 1 and returns
a feedback signal to pin 9 of connector A of
M70.
Fan
N85 is supplied directly from a
line protected by maxifuse A/C of B99.
Pin 11 of connector A of
M70 controls
engagement of the compressor
See
E6021
COMPRESSOR ENGAGEMENT
.
It should be remembered that the climate
control control unit only 'houses' the control button and the LED,
but does not in any way affect the heated rear windscreen activation
strategy
See E3030 HEATED REAR WINDSCREEN AND DOOR MIRROR DEFROSTING
.