Suzuki Grand Vitara XL-7 Service Manual page 38

A/C CONTROLLER VOLTAGE VALUES TABLE
Termi- Wire
Circuit
nal color
Compressor
magnet
AC1-1 P
Clutch
relay drive
A / C ON
signal output
AC1-4 Y / R to A / C
controller
through relay
A / C ON
AC1-8 AC1-8 Gr / W Gr / W
permission
A / C switch
and / or
AC1-10 G / B defroster
switch ON
signal input g
Dual
(Refrigerant) ( g
AC1-13 AC1-13 Or Or
pressure
switch input
Controller
AC1-15 B
main ground
Controller
AC1-16 B / W main power
supply
A / C
eva orator evaporator
temperature
AC2-1 B sensor (A / C
evaporator
thermistor)
input
Sensor
AC2-2 B
ground
Measurement
ground
Ground to engine
(Fig. B)
Ground to engine
(Fig. B)
Ground to engine g
(Fig. B)
Ground to engine
(Fig. B)
) Ground to engine g
(Fig. B)
Ground to body
(Fig. A)
Ground to engine
(Fig. B)
(Approx. 2215 Ω)
Ground to engine
(Fig. B)
(Approx. 5995 Ω)
Ground to body
(Fig. A)
Normal value
Fulfill all the following conditions
DBlower fan motor switch ON
DFulfill either the following conditions
– A / C switch ON
– Defroster position or defroster / foot position
switch ON (LH model only)
– 0.3 – 0.3 V
DEngine running
DA / C evaporator temperature sensor
temperature input more than approx. 4_C
(39.2_F)
DDual (Refrigerant) pressure switch ON
DSignal input from ECM ON
Except the above-mentioned conditions with
12 – 15 V
engine running
Fulfill all the following conditions
DBlower fan motor switch ON
DFulfill either the following conditions
– A / C switch ON
– Defroster position or defroster / foot position
4 – 6 V switch ON (LH model only)
DEngine running
DA / C evaporator temperature sensor
temperature input more than approx. 4_C
(39.2_F)
DDual (Refrigerant) pressure switch ON
Except the above-mentioned conditions with
12 – 15 V
engine running
10 – 14 V Approve of A / C ON
– 0.3 – 0.3 V A / C ON forbid
Fulfill all the following conditions
DBlower fan motor switch ON
DFulfill either the following conditions
– 0.3 – 0.3 V – A / C switch ON
– Defroster position or defroster / foot position
switch ON (LH model only)
DEngine running
Except the above-mentioned condition with
12 – 15 V
engine running
Dual (Refrigerant) pressure is ON with engine
– 0.3 – 0.3 V running. For detail, refer to "DUAL PRESSURE
SWITCH" in this section
Dual (Refrigerant) pressure is OFF with engine
12 – 15 V running. For detail, refer to "DUAL PRESSURE
SWITCH" in this section
– 0.3 – 0.3 V Engine running
10 – 14 V Ignition switch is ON position
Approx. 1.0 V A / C evaporator temperature sensor temperature
at approx. 25_C (77_F) with engine running
A / C evaporator temperature sensor temperature
at approx. 4_C (39.2_F) with engine running
Approx. 2.0 V If the temperature is less than approx. 4_C
(39.2_F), in this case compressor and condenser
fan should be stop, and come back at more than
approx. 6_C (42.8_F)
– 0.3 – 0.3 V Engine running
AIR CONDITIONING (OPTIONAL) 1B-9
Condition