Suzuki WagonR+ RB310, Service Manual

Page: 2092 / 3086

AIR CONDITIONING (OPTIONAL) 1B-13
ECM VOLTAGE VALUES TABLE FOR RELATION OF A/C CONTROL
Terminal Wire Circuit
Measurement
ground
Normal value Condition
E21-01 B
ECM ground for
sensor circuit
(E21-10, E23-10)
Ground to body
(Fig A)
– 0.5 – 0 volt Ignition switch ON
E21-02 B/Y
ECM ground for
power circuit Ground to body
(Fig A)
– 0.5 – 0 volt Ignition switch ON
E21-03 B/Y
ECM ground for
power circuit Ground to body
(Fig A)
– 0.5 – 0 volt Ignition switch ON
E21-10 Br/W Sensor ground
Ground to body
(Fig A)
– 0.5 – 0 volt Ignition switch ON
E21 14 Y/G
Engine coolant
temperature
Ground to engine
0.71 – 0.76 volts
(290 – 320
Ω
)
Engine coolant temperature at
Approx. 80
"
C (176
"
F) with
ignition ON
E21-14 Y/G temperature
sensor input
g
(Fig B)
0.35 – 0.37 volts
(136 – 144
Ω
)
Engine coolant temperature at
Approx. 110
"
C (230
"
F) with
ignition ON
E22 01 B/Y
Compressor
magnet clutch
Ground to engine
10 – 14 volts
Blower switch and A/C switch
ON with engine running
E22-01 B/Y magnet clutch
output
g
(Fig B)
0 – 1 volt
Except the above-mentioned
with engine running
E22-05 B/R
Power supply for
engine control Ground to engine
(Fig B)
10 – 14 volts Ignition switch ON
E22-06 B/R
Power supply for
engine control Ground to engine
(Fig B)
10 – 14 volts Ignition switch ON
E22 10 Bl/B Main relay
Ground to engine
0 – 1 volt Ignition switch ON
E22-10 Bl/B Main relay
g
(Fig B)
10 – 14 volts Ignition switch OFF
E22 16 Lg/R A/C switch input
Ground to engine
0 – 1 volt
Blower switch and A/C switch
ON with ignition switch ON
E22-16 Lg/R A/C switch input
g
(Fig B)
10 – 14 volts
Blower switch or A/C switch
OFF with ignition switch ON
E22-18 Bl
Radiator
(condenser)
cooling fan relay
Ground to engine
(Fig B)
0 – 1 volt
Blower switch and A/C switch
ON or engine coolant temp.
sensor more than 98
"
C (208
"
F)
with engine running
g y
output
( g )
10 – 14 volts
Except the above-mentioned
with engine running
E23-10 Br/W Sensor ground
Ground to body
(Fig A)
– 0.5 – 0 volt Ignition switch ON
0 – 2 volt
Blower switch 2nd or 3rd or 4th
position with ignition switch ON
E23-13 P/Bl
Blower fan speed
input Ground to engine
(Fig B)
3 – 5 volts
Blower switch 1st position with
ignition switch ON
10 – 14 volts
Blower switch OFF position with
ignition switch ON
E23 14 G/R
Evaporator
thermistor temp
Ground to engine
2.0 – 2.3 volts
(1800 – 2200
Ω
)
Evaporator thermistor temp. at
Approx. 25
"
C (77
"
F) with
ignition switch ON
E23-14 G/R thermistor temp.
input
g
(Fig B)
3.5 – 3.6 volts
(6300 – 7000
Ω
)
Evaporator thermistor temp. at
Approx. 0
"
C (32
"
F) with ignition
switch ON