E 320 CDI (211.026) L6-3.2L DSL Turbo (648.961) (2005)
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Blower Motor: Description and Operation
GF83.10-P-2102-02T Blower, Function
GF83.10-P-2102-02T Blower, Function
Function
The AAC [KLA] control and operating unit (N22) or comfort automatic air conditioning (N22/7) passes on a control voltage of 0 % to 100 % to the
blower regulator (A32n1) via climate bus 1. Depending on the control voltage applied this then regulates the operating voltage for the blower motor
(A32m1). This achieves a control of blower speed from 0 % to 100 %.
The blower regulator (operating voltage) is influenced by the following factors:
^
Blower output adjustment (AUTO/manual)
^
Operating functions (AC OFF, REST, air distribution)
^
Mode status (heating, cooling)
^
Intensity of sun
^
coolant temperature
^
Vehicle speed
^
Outside temperature
^
Humidity
^
Fresh air/recirculated air flap setting
^
Position of activated carbon filter flap
^
Flap positions
^
Terminal 15 (blower ON), starter running (blower OFF)
Manual blower stages:
Stage 1
10% blower capacity
Stage 2
18% blower capacity
Stage 3
25% blower capacity
Stage 4
32% blower capacity
Stage 5
40% blower capacity
Stage 6
52% blower capacity
Stage 7
65% blower capacity
Stage 8
80% blower capacity
Stage 9
100% blower capacity
Automatic stages with automatic air conditioning
The blower output is controlled via a blower characteristic.
Automatic stages with comfort automatic air conditioning
The blower capacity is controlled via nine blower characteristics.
