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AUTOMATIC AIR CONDITIONING SYSTEM
IM5F7J 4-7
7. COOLING FAN CONTROL
Electric cooling fans are adopted for cooling the radia-
tor and condenser, and fan speed is controlled in three
steps, HI, MED, and LO to reduce fan noise.
Fan speed
Power consumed
LO
: 1,600 rpm
115W
MED : 1,950 rpm
145W
HI
: 2,300 rpm
175W
This control is not performed by the auto amplifier.
IGN
MPFI
_
unit
B
al
el
bl
al
bl
RH1
RF12
GN
LH1
LH2
Pressure
switch
(Middle
pressure)
M
M
Cooling fan
Cooling fan
RH
LH
04-450
Fig . 89
Input signal
Output signal
Compressor
Vehicle speed
Engine water
Air conditioner
Cooling fan
signal
temperature
intermediate
MPFI unit signal
operation status
pressure switch
o
o
X =
X =
XL- J
6 (10) 12 (20)
192 (89) 203 (95)
°
O
1,275±147 (13±1 .5)
127 (16±1 3)
1 569
Terminal
1~
Terminal
Main (RH)
Sub. (LH)
MPH (km/h)
F ( C)
±
.
,
kPa (kg/cm2)
1
X
ON
-
Low
Low
2
X
0
-
ON
Medium
Medium
3
X
0
X
-
ON
Medium
Medium
4
ON
0
ON
ON
High
High
5
X
ON
-
Low
Low
6
0
X
0
ON
ON
High
Hlgh
7
0
X
ON
ON
High
High
8
0
ON
ON
High
High
9
X
-
-
Off
Off
10
OF
X
0
ON
-
Low
Low
11
F
X
X
-
F
-
Off
Off
12
0
0
-
ON
t
Medium
Medium
41
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