Suzuki RA410, Manual

Page: 63 / 761

A/C COMPRESSOR DRIVE BELT INSPEC-
TION
1) Check belt tension by measuring how much it deflects when
pushed at intermediate point between compressor pulley (1)
and crankshaft pulley (2) with about 100 N (10 kg, 22 lbs) force.
“a” : 8 – 9 mm (0.31 – 0.35 in.) as deflection/100N (10 kg, 22
lbs)
2) Check belt for wear and cracks, and replace as required.
2
1
AIR CONDITIONING (OPTIONAL) 1B-11
TERMINAL CIRCUIT CONDITION NORMAL VALUE
C5 Radiator (and condens-
er) cooling fan motor
relay output
A/C switch ON and Blower fan switch ON with en-
gine running or engine coolant temperature higher
than preset temperature with ignition switch ON
0 – 1 volt
Except the above condition at ignition switch ON 10 – 14 volts
C14 Sensor ground Ignition switch ON or OFF 0 volt
C20 Blower fan speed input
Blower fan switch OFF with ignition switch ON 10 – 14 volts
Blower fan switch at Lo position with ignition switch
ON
3.5 – 5.5 volts
Blower fan switch at Me or Hi position with ignition
switch ON
0 – 1.5 volts
C21 A/C switch input A/C switch ON, Blower switch ON and Dual pressure
switch normal condition (switch ON) with ignition
switch ON
0 – 1 volt
Except the above condition with ignition switch ON 10 – 14 volts
A3 Engine coolant temper-
ature sensor input
Engine coolant temperature at approx. 80 C (176 F)
with ignition switch ON
0.7 – 0.8 volts/
303 – 326
Engine coolant temperature at approx. 110 C
(230 F) with ignition switch ON
0.35 – 0.4 volts/
138 – 145
A4 A/C Evaporator thermistor
input
A/C Evaporator thermistor temperature at approx.
25
C (77 F) with ignition switch ON
1.1 – 1.35 volts/
1.8 – 2.2 k
A/C Evaporator thermistor temperature at approx.
0
C (32 F) with ignition switch ON
2.5 – 2.7 volts/
6.3 – 7 k
A12 Compressor output A/C switch input 0 – 1 volt with engine running
10 – 14 volts
Except the above-mentioned with engine running
0 volt