Suzuki Wagon R Manual page 1092

1B-4 AIR CONDITIONING (OPTIONAL)
ECM VOLTAGE VALUES TABLE FOR RELATION OF A/C CONTROL
Terminal Wire
Main ground for
E21-01 B
ECM
Power supply for
E21-02 B / R
engine control
ECM ground for
E21-13 B / Y
power circuit
Power supply for
E21-15 B / R
engine control
Radiator
(condenser)
E21-20 Bl
cooling fan relay cooling fan relay
output
E21 22 E21-22 Bl/ B Bl/ B Main relay Main relay
Compressor
E21 23 E21-23 Or Or magnet clutch magnet clutch
relay output
ECM ground for
E21-26 B / Y
power circuit
Evaporator
E22-09 E22 09 G / R G / R
thermistor temp. thermistor temp
input
E22-19 E22 19 Lg / R Lg / R A / C switch input A/ C switch input
Engine coolant
E23 07 Y / G
E23-07 Y / G temperature temperature
sensor input
E23-09 Br/ W Sensor ground
Blower fan speed
E23-15 P / Bl
input
Measurement
Circuit
ground
Ground to body
(Fig. A)
Ground to engine
Fig. B)
Ground to body
(Fig. A)
Ground to engine
(Fig. B)
Ground to engine
(Fig. B) (Fig B)
Ground to engine
(Fig. B)
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 body
(Fig. A)
Ground to engine
(Fig. B)
Normal value
– 0.3 – 0.3 V
10 – 14 V
– 0.3 – 0.3 V
10 – 14 V
0 – 1 V
10 – 14 V
0 – 1 V
g
10 – 14 V
0 – 1 V
g
10 – 14 V
– 0.3 – 0.3 V
2.0 – 2.3 V
(1800 – 2200 Ω)
g
3.5 – 3.6 V
(6300 – 7000 Ω)
0 – 1 V
g
10 – 14 V
0.71 – 0.76 V
(290 – 320 Ω)
g
0.35 – 0.37 V
(136 – 144 Ω)
– 0.3 – 0.3 V
0 – 2 V
3 – 5 V
10 – 14 V
Condition
Ignition switch ON
Ignition switch ON
Ignition switch ON
Ignition switch ON
A/ C switch ON or engine coolant
temp. sensor more than 96_C
(205_F) with engine running
Except the above-mentioned
with engine running
Ignition switch ON
Ignition switch OFF
Blower switch and A / C switch
ON with engine running
Except the above-mentioned
with engine running
Ignition switch ON
Evaporator thermistor temp. at
Approx. 25_C (77_F) with
ignition switch ON
Evaporator thermistor temp. at
Approx. 0_C (32_F) with ignition
switch ON
A/ C switch ON with ignition
switch ON
A/ C switch OFF with ignition
switch ON
Engine coolant temperature at
Approx. 80_C (176_F) with
ignition ON
Engine coolant temperature at
Approx. 110_C (230_F) with
ignition ON
Ignition switch ON
Blower switch 2nd, 3rd or 4th
position with ignition switch ON
Blower switch 1st position with
ignition switch ON
Blower switch OFF position with
ignition switch ON