Suzuki sq-416-420-625 Service Manual page 91

1B-20 AIR CONDITIONING (OPTIONAL)
A/C CONTROLLER VOLTAGE VALUES TABLE
Terminal Wire
Controller main
AC1-1 B/W
power supply
Controller main
AC1-2 B/Y
ground
Refrigerant
AC1-4 AC1 4 Or Or
pressure switch pressure switch
input
A/ C switch input
and / or defroster
AC1 7 AC1-7 G / B G / B
position switch
input (see NOTE)
Signal input from
ECM (A / C ON
AC1 9 AC1-9 Gr / W Gr / W
permission
signal)
Signal output to
ECM (A / C ON
AC1-13 Y/B
request signal)
Compressor
magnet clutch
AC1-16 P
relay output
Measurement
Circuit
ground
Ground to
engine (Fig. B)
Ground to body
(Fig. A)
Ground to
engine (Fig. B)
Ground to
engine (Fig. B)
Ground to
(
engine (Fig. B)
Ground to engine
(Fig. B)
Ground to engine
(Fig. B)
Normal value
Ignition switch ON with engine
10 – 14 volts
stopped
– 0.4 – 0 volt Engine running
Refrigerant pressure within 225 kPa
(2.3 kg / cm
0 – 1 volt
(26 kg / cm
running
Refrigerant pressure below
196 kPa (2.0 kg / cm
10 – 14 volts
above 3140 kPa (32 kg / cm
with engine running
Blower fan motor switch and A / C or
8 – 14 volts defroster position switch (see NOTE)
ON with engine running
Blower fan motor switch or A / C or
0 – 1.5 volts defroster position switch (see NOTE)
OFF with engine running
10 – 14 volts Approve of A / C ON
0 – 1 volt A/ C ON forbid
Blower fan motor switch and A / C or
defroster position switch (see NOTE)
ON with engine running at evaporator
0 – 1.5 volts thermistor temperature input more
than approx. 2.5_C (less than 2.5 V
(5840 f)) and refrigerant pressure
switch is ON
Except the above-mentioned with
10 – 14 volts
engine running
Blower fan motor switch and A / C or
defroster position switch ON with
engine running at evaporator
thermistor temperature input more
0 – 1 volt
than approx. 2.5_C (less than 2.5 V
(5840 f)), refrigerant pressure
switch ON and signal input from ECM
ON
Except the above-mentioned with
10 – 14 volts
engine running
Condition
2
, 32.7 psi) to 2548 kPa
2
, 370 psi) with engine
2
, 28 psi) or
2
, 455 psi)