K-2
K-2
Air Conditioner
36
W701-0160E
11.4 Car air conditioner system diagnosis table IV (Electronic thermo system)
Operation
trouble
phenomenon of
functional parts
Guessing of
trouble functional
parts
Check and confirmation of
operational parts
Diagnosis result
(Refer to temperature
characteristic for thermistor.)
Possible cause
Measures
(Thermistor amplifier
replacement, and connector
repair.)
Resistance is small.
(Abnormal if resistance is
about 7k
Ω
or less.)
Thermistor failure.
Replace thermistor.
Check thermistor.
Measure resistance of
thermistor connector.
Resistance is about 2k
Ω
(25
℃
).
Thermistor is normal.
----------------------------
Check thermo
volume.
Turn OFF thermo volume.
Compressor clutch is turned
OFF.
Thermo volume is
short-circuited.
Replace thermo volume.
Compressor
clutch stayed
ON.
Check relay
contact and
thermo amp.
Remove connector of
thermistor.
Compressor clutch cannot be
turned OFF. (Stayed ON)
Relay contact joining.
Thermo amp. failure.
Replace relay or thermo amp.
Check thermistor.
Measure resistance of
thermistor connector.
Resistance is about 7k
Ω
or
more.
Thermistor failure.
Replace thermistor.
Check thermo
volume.
Measure resistance of thermo
volume terminal.
Resistance is
∞
(infinity).
Thermo volume is
disconnected.
Replace thermo volume.
Compressor
clutch stayed
OFF.
Check relay
contact and
thermo amp.
Detach connector of thermistor,
and short-circuit thermo amp.
side connector.
Compressor clutch cannot be
turned ON.
Relay contact joining.
Thermo amp. failure.
Replace relay or thermo amp.
Tester indicator changes if
applying shock to thermo
volume.
Contact failure in thermo
switch.
Replace thermo switch.
Check thermo
switch.
Check conduction in thermo
volume terminal.
Tester indicator does not
change even if applying
shock to thermo volume.
Thermo switch is normal.
----------------------------
Check thermo
amp.
Remove thermistor, and
short-circuit thermo amp. side
connector.
When applying shock to
thermo amp., compressor
clutch does chattering.
Soldering failure (or,
caulking failure) in thermo
amp.
Replace thermo amp.
Compressor
clutch does
chattering.
Check contact
condition in wiring
connector.
Twist connectors.
Compressor clutch does
chattering.
Connector failure.
Repair connector.
Insufficient
cooling. (Clutch
works ON and
OFF.)
Replaces
thermistor with
new one.
Gets cold normally.
Thermistor failure.
Deterioration of thermistor.
Replace thermistor.
Summary of Contents for TT-800XXL1
Page 20: ...B 2 B 2 Hydraulic Pump 3 W101 0280E 1 2 Inside view Variable displacement piston pump...
Page 114: ...5 G 2 G 2 Boom Five Section Boom 5 W536 0760E G 2...
Page 166: ...13 13 W701 0160E K 2 K 2 Air Conditioner K 2 4 Layout 4 1 Overall layout...
Page 167: ...14 14 W701 0160E K 2 K 2 Air Conditioner K 2 4 2 Overall layout...
Page 168: ...15 15 W701 0160E K 2 K 2 Air Conditioner K 2 4 3 Evaporator section...
Page 169: ...16 W701 0160E K 2 K 2 Air Conditioner 5 Compressor ass y...
Page 170: ...17 17 W701 0160E K 2 K 2 Air Conditioner K 2 6 Evaporator ass y...
Page 171: ...18 18 W701 0160E K 2 K 2 Air Conditioner K 2 7 Condenser ass y...
Page 172: ...19 19 W701 0160E K 2 K 2 Air Conditioner K 2 8 Electric 8 1 Electric circuit 0 363 205 60030...
Page 173: ...20 20 W701 0160E K 2 K 2 Air Conditioner K 2 8 2 Main harness A...
Page 174: ...21 21 W701 0160E K 2 K 2 Air Conditioner K 2 8 3 Main harness B...
Page 254: ...Location of Hydraulic Parts 4 WZ07 0780E 4 Z 4 Z 4 Z 4 Location of Hydraulic Parts...
Page 259: ...Hydraulic Electric Carrier Equipment Comparison Table Z 8 Z 8 Z 8 9 WZ09 0130E 9...
Page 263: ...Z 12 Z 12 Harness Boom Z 12 12 WZ04 1310E 12 Harness Boom 1 2 2 343 530 32040 1 343 530 22030...
