Suzuki GRAND VITARA XL-7 Owner's Manual page 42

A/C CONTROLLER VOLTAGE VALUES TABLE
Terminal Wire
BLK/ Controller main
AC-A-1
WHT power supply
BLK/ Controller main
AC-A-2
YEL ground
Refrigerant
AC-A-4 ORN (dual) pressure
switch input
A/C switch and/
GRN/
AC-A-7 or defroster
BLK
switch input
Signal input from
GRY/ ECM (A/C ON
AC-A-9
WHT permission sig-
nal)
Signal output to
YEL/
AC-A-13 ECM (A/C ON
BLK
request signal)
Compressor
AC-A-16 PNK magnet clutch
relay output
BLU/
AC-B-1 Sensor ground
YEL
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)
Ground to body
(Fig A)
AIR CONDITIONING (OPTIONAL) 1B-17
Normal value
Ignition switch ON with engine
10 – 14 V
stopped
–0.4 – 0 V Engine running
Refrigerant pressure within 225
kpa (2.3 kg/cm
0 – 1 V
2548 kpa (26 kg/cm
with engine running
Refrigerant pressure below 196
kpa (2.0 kg/cm
10 – 14 V
3140 kpa (32 kg/cm
with engine running
Blower fan motor switch or A/C or
8 – 14 V defroster switch OFF with engine
running
Blower fan motor switch and A/C
0 – 1.5 V or defroster switch ON with
engine running
10 – 14 V Approve of A/C ON
0 – 1 V A/C ON forbid
Blower fan motor switch and A/C
or defroster switch ON with
engine running at A/C evaporator
0 – 1.5 V temperature sensor temperature
input more than approx. 2.5 °C
(less than 2.5 V (5840 Ω)) and
refrigerant pressure switch is ON
Except the above-mentioned with
10 – 14 V
engine running
Blower fan motor switch and A/C
or defroster switch ON with
engine running at A/C evaporator
temperature sensor temperature
0 – 1 V
input more than approx. 2.5 °C
(less than 2.5 V (5840 Ω)), refrig-
erant pressure switch ON and
signal input from ECM ON
Except the above-mentioned with
10 – 14 V
engine running
–0.4 – 0 V Engine running
Condition
2
, 32.7 psi) to
2
, 370 psi)
2
, 28 psi) or above
2
, 455 psi)