Suzuki Wagon R Manual page 72

ECM VOLTAGE VALUES TABLE FOR RELATION OF A/C CONTROL
Terminal Wire
ECM ground for
E21-01 B sensor circuit
(E21-10, E23-10)
ECM ground for
E21-02 B / Y
power circuit
ECM ground for
E21-03 B / Y
power circuit
E21-10 Br/ W Sensor ground
Engine coolant
E21 14 E21-14 Y / G Y / G temperature temperature
sensor input
Compressor
E22 01 E22-01 B / Y B / Y magnet clutch magnet clutch
output
Power supply for
E22-05 B / R
engine control
Power supply for
E22-06 B / R
engine control
E22-10 E22 10 Bl/ B Bl/ B Main relay Main relay
E22 16 E22-16 Lg / R Lg / R A/ C switch input A / C switch input
Radiator
(condenser)
E22-18 Bl
cooling fan relay
output
E23-10 Br/ W Sensor ground
Blower fan speed
E23-13 P / Bl
input
Evaporator
E23-14 E23 14 G / R G / R thermistor temp. thermistor temp
input
Measurement
Circuit
ground
Ground to body
(Fig A)
Ground to body
(Fig A)
Ground to body
(Fig A)
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 engine
(Fig B)
Ground to engine
g y ( g ) (Fig B)
Ground to body
(Fig A)
Ground to engine
(Fig B)
Ground to engine
(Fig B)
Normal value
–0.5 – 0 volt
–0.5 – 0 volt
–0.5 – 0 volt
–0.5 – 0 volt
0.71 – 0.76 volts
(290 – 320 Ω)
g
0.35 – 0.37 volts
(136 – 144 Ω)
10 – 14 volts
g
0 – 1 volt
10 – 14 volts
10 – 14 volts
0 – 1 volt
g
10 – 14 volts
0 – 1 volt
g
10 – 14 volts
0 – 1 volt
10 – 14 volts
–0.5 – 0 volt
0 – 2 volt
3 – 5 volts
10 – 14 volts
2.0 – 2.3 volts
(1800 – 2200 Ω)
g
3.5 – 3.6 volts
(6300 – 7000 Ω)
AIR CONDITIONING (OPTIONAL) 1B-13
Condition
Ignition switch ON
Ignition switch ON
Ignition switch ON
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
Blower switch and A / C switch
ON with engine running
Except the above-mentioned
with engine running
Ignition switch ON
Ignition switch ON
Ignition switch ON
Ignition switch OFF
Blower switch and A / C switch
ON with ignition switch ON
Blower switch or A / C switch
OFF with ignition switch ON
Blower switch and A / C switch
ON or engine coolant temp.
sensor more than 98_C (208_F)
with engine running
Except the above-mentioned
with engine running
Ignition switch ON
Blower switch 2nd or 3rd or 4th
position with ignition switch ON
Blower switch 1st position with
ignition switch ON
Blower switch OFF position with
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