Suzuki sq-416-420-625 Service Manual page 92

Terminal Wire
AC2-1 L / Y Sensor ground
Evaporator
thermistor
AC2-2 W / B temperature
(evaporator temp.
sensor) input
H25
Signal output to
engine
A/ C controller
E61-27/
Gr / W ( (A/ C ON
G16, J20 G16 J20
permission
engines
signal)
E61-8
H25
engine
Signal input from
E61-28/
A/ C controller
Y/ B Y/ B
G16, J20 (A/ C ON request
engines
signal)
E61-17
H25
engine
A/ C condenser
E61-5/
cooling fan relay
Y/ L
G16, J20
output
engines
E61-22
NOTE:
Defroster position switch circuit is equipped with LH vehicle only.
Measurement
Circuit
ground
Ground to body
(Fig. A)
Ground to engine
(Fig. B)
Ground to engine
(Fig. C) (Fig C)
Ground to engine
(Fig. C)
Ground to engine
(Fig. C)
Normal value
– 0.4 – 0 volt
1.5 volts
(3150 f)
2.62 volts
(6.311 f)
10 – 14 volts
0 – 1 volt
0 – 1.5 volts
g
10 – 14 volts
0 – 1 volt
10 – 14 volts
AIR CONDITIONING (OPTIONAL) 1B-21
Condition
Engine running
Evaporator thermistor temperature at
approx. 15_C (59_F) with engine
running
Evaporator thermistor temperature at
approx. 1_C (34_F) with engine
running
* If the temperature is less than
approx. 1_C, in this case
compressor and condenser fan
should be stop (come back at more
than approx. 2.5_C (less than
5840 f, 2.5 V))
Required A / C ON (terminal AC-A13)
at engine running with normal
condition (refer to "INSPECTION OF
ECM AND ITS CIRCUIT" in Section
6E)
Except the above-mentioned with
engine running
In this case compressor should be
stop
Require A / C ON
Turn off the A / C
D Blower fan motor switch and A / C or
defroster position switch (see
NOTE) ON with engine running at
evaporator thermistor temperature
input more than approx. 2.5_C (less
than 2.5 V (5840 f)), refrigerant
pressure switch ON and signal
input from ECM ON
D Engine coolant temperature sensor
more than 113_C (236_F) with
engine running
Except the above-mentioned with
engine running