Chery S11 / Chery QQ. Manual — part 76
Chery QQ Service Manual
Improperly wiring in the circuit
Over damp system
Check the expansion valve
Repair if necessary
evacuate and charge the
system
cold air exists only at high
speed
Condensator is blocked
Drive belt trackslip
Compressor fault
Insufficient or over-charged
refrigerant
Air exists in the system
Check the condensator
Check or replace the drive
belt
Check the compressor
Check the refrigerant charge
Evacuate and charge the
system with refrigerant
Insufficient refrigeration
Condensator is blocked
Drive belt trackslip
Electric magnetic clutch fault
Compressor fault
Expansion valve fault
Thermistor fault
Insufficient or over-charged
refrigerant
Air exists in the system or excessive
oil in the compressor
Stock solution drier is blocked
Check the condensator
Check or replace the drive
belt
Check the electric magnetic
clutch
Check the compressor
Check the expansion valve
Check the thermistor
Check refrigerant charge
Evacuate and charge the
system
Check the stock solution
drier
Insufficient flow speed of
cold air
Evaporator is blocked or frosts
Air leakage in the cooling device or
air ducts
Air inlet is blocked
Air blower motor fault
Check the evaporator
Repair if necessory
Repair if necessory
Replace the air blower
motor
II Trouble-shooting Chart(electron temperature control system)
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Chery QQ Service Manual
Phenomenon
Possible position
of the fault
Diagnosis and
measurement
Result Reason
power source is
out of condition
F6 ( 20A ) fuse
voltage 12V
F6 is out of
condition
Without air conditioner
relay power source
air conditioner
relay is out of
conditon
No. 30, 87 pin
voltates for relay
operation are 12V
Relay is out of
condition
Contacts is out of
condition
Air blower
switch
Air blower switch
disconnects the
no.2 pin ground
strap connection
Air blower switch
is out of condition
or no.1 pin does not
ground
Without ground strap
connection signal
output
A/C switch
A/C switch on no.1
pin
A/C switch or
compression is out
of condition
Without ground strap
connection signal
output
pressure switch is
out of condition
Remove the joint,
direct
cross
connection
Switch is out of
condition or
insufficient
pressure
Pressure switch can not
be turned on
temperature
sensor for
evaporator is out
of condition
Resistance value is
over 2KΩ
Sensor is out of
condition or
improper
installation
Detection temperature
is too low
water temperature
for engine is too
low
Check the engine
values
water temperature
sensor is out of
condition
water temperature is too
low , compressor does
not work
The engine is
accelerating
Gasoline throttle
position sensor
normal normal
operation
conditions
The
compressor
does not work
when the air
conditioner
switch is
turned on
ECU is out of
condition
Measure the ECU
no.41, 22 pins
ECU or wiring
ECU cannot deal with
the A/C swich signals
Air blower
does not
duty relay is out
of condition
No.85, 86, 30, 87
pins of the relay
Wiring is out of
condition
Without +12V supplied
to air blower
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Chery QQ Service Manual
resistance of air
blower is out of
condition
Measuring
resistance is over
0Ω
Resistance is short
circuit
Without speed governing
signal
Switch of air
blower is out of
condition
Measuring switch
conduction
Switch is out of
condition
Without control signal
work
air blower is out
of condition
Remove plug ,
power supply 12V
Air blower breaks
down
replace
F2 fuse
+12V
Break down
replace
High speed fan
relay
measure the relay
and the wiring
replace
Without +12V supplied
to heat emission fan
fan wiring is out
of condition
pin measurement
repair
connection of the pins or
wiring is out of
condition
air blower is out
of condition
Remove the plug
and test with power
replace
Air blower burns out
water temperature
sensor is out of
condition
Check water
temperature for
engine
replace Low
water
temperature
for engine
Pressure switch
Remove the plug,
cross connection
insufficient pressure
of the pressure
switch or pressure
Without switch signals
Fan does not
work (high
speed)
ECU ECU
no.31pin
ground strap
connection
ECU is out of
condition
replace
insufficient
refrigeration
(
clutch
unmovable)
Refer to the
diagonosis
tables metioned
above(reasons
out of the
electron
temperature
control system)
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Chery QQ Service Manual
Section 9 Maintenance On-board
Note: you should comply with the following rules when maintaining air conditioning
system.
1. Wiring
(
1)remove the accumulator’s negative wire to avoid short circuit.
(
2)the lead connector should be plugged fixedly.
(
3) the gum cover should be fitted in panel holes before wiring arrangement to
protect the wiring bundle.
(
4)connect the wiring bundle of air conditioner to main wiring bundle with
pdythene belt or original binding terminal block.
(
5)if original wiring bundle is removed or stripped when maintaining, you should
put it back to the place where it was.
(
6)original binding terminal block and wiring bundle of the air conditioner should
not be pressed during installation.
(
7)when the leads are welded to the wiring bundle, the two leads should have the
same diameters and the connection should be wrapped with insulated belt.
(
8)the wiring bundle should keep away from the moving elements or high
temperature places.
(
9)it is not allowed that the connection parts is close to the fuel pipe.
(
10)check the wiring bundle if it contacts with sharp edges and corners.
2. Refrigerating
return pipe
(
1)heating
elbow bend pipe is absolutely
impermissible。
The degree of bending should be as small as possible.
(
2)parts in air conditioner should be kept dry and free of dirt.
When removing any pipe of the system, you should fit a cap on the joint of this pipe
as soon as possible.
(
3)when the hose and the metal pipe are interconnected, drops of refrigerating oil
146
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