Nissan Qashqai J11. Manual — part 1146
HAC-220
< SYMPTOM DIAGNOSIS >
[MANUAL AIR CONDITIONING]
MANUAL AIR CONDITIONING SYSTEM
SYMPTOM DIAGNOSIS
MANUAL AIR CONDITIONING SYSTEM
Symptom Table
INFOID:0000000010432573
NOTE:
Perform self-diagnoses with CONSULT before performing the symptom diagnosis. If any DTC is detected,
perform the corresponding diagnosis.
Symptom
Corresponding malfunction part
Check item/Reference
Air conditioning cannot be controlled.
• A/C amp. power supply or ground cir-
cuit
• A/C amp.
Check A/C amp. power supply and
ground circuits.
HAC-207, "A/C AMP. : Diagnosis
Procedure"
Discharge air temperature does not change.
Air mix door motor system installation
condition
Check air mix door motor system is
properly installed. Refer to
.
Air outlet does not change.
Mode door motor system installation
condition
Check mode door motor system is
properly installed. Refer to
.
Air inlet does not change.
Intake door motor system installation
condition
Check intake door motor system is
properly installed. Refer to
.
Blower motor does not operates or operation speed is
not normal.
• Blower motor power supply circuit.
• A/C amp. ignition power supply sig-
nal circuit
• Fan control amp. power supply circuit
• Fan control amp. ground circuit
• Fan control amp. control signal circuit
• Blower motor
• Fan control amp.
• A/C amp.
Check blower motor circuits.
HAC-208, "Diagnosis Procedure"
Blower motor operates at the maxi-
mum fan speed and fan speed can-
not be selected.
Blower motor
can be switched
to OFF.
• A/C amp. ignition power supply sig-
nal circuit
• Blower motor feedback signal circuit
• A/C amp.
Blower motor
cannot be
switched to
OFF.
• Blower motor feedback signal circuit
• A/C amp. power supply circuit
• Fan control amp. power supply circuit
• Fan control amp. control signal circuit
• Fan control amp.
• A/C amp.
Compressor does not operate.
• Magnet clutch
• Magnet clutch power supply circuit
• Magnet clutch ground circuit
• IPDM E/R (A/C relay)
• The circuit between ECM and refrig-
erant pressure sensor
• Refrigerant pressure sensor
• ECM
• A/C amp.
Check magnet clutch circuits.
HAC-213, "Component Function
Check"
• Insufficient cooling
• No cool air comes out. (Air flow volume is normal.)
• Magnet clutch control system
• Drive belt slipping
• Cooler cycle
• ECV (Electrical control valve)
• Air leakage from each duct
MANUAL AIR CONDITIONING SYSTEM
HAC-221
< SYMPTOM DIAGNOSIS >
[MANUAL AIR CONDITIONING]
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• Insufficient heating
• No warm air comes out. (Air flow volume is normal.)
• Engine cooling system
• Heater hose
• Heater core
• Air leakage from each duct
• PTC heater system (with PTC heat-
er)
HAC-223, "Diagnosis Procedure"
Noise is heard
when the air
conditioning op-
erates.
During compressor operation
Cooler cycle
Symptom table for noise
•
(HRA2DDT and MR16DDT en-
gine models for Europe)
•
and R9M engine models for Eu-
rope)
•
(HRA2DDT, MR16DDT and
MR20DD engine models except
for Europe)
•
and R9M engine models except
for Europe)
During blower motor operation
• Mixing any foreign object in blower
motor
• Blower motor fan breakage
• Blower motor rotation inferiority
Check blower motor.
HAC-211, "Component Inspection
(Blower Motor)"
Symptom
Corresponding malfunction part
Check item/Reference
HAC-222
< SYMPTOM DIAGNOSIS >
[MANUAL AIR CONDITIONING]
INSUFFICIENT COOLING
INSUFFICIENT COOLING
Description
INFOID:0000000010432574
Symptom
• Insufficient cooling
• No cool air comes out. (Air flow volume is normal.)
Diagnosis Procedure
INFOID:0000000010432575
NOTE:
Perform self-diagnoses with CONSULT before performing symptom diagnosis. If any DTC is detected, per-
form the corresponding diagnosis.
1.
CHECK MAGNET CLUTCH OPERATION
1.
Turn ignition switch ON.
2.
Operate fan control dial and operate blower fan.
3.
Press A/C switch.
4.
Check that A/C indicator turns ON. Check visually and by sound that compressor operates.
5.
Press A/C switch again.
6.
Check that A/C indicator turns OFF. Check that compressor stops.
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Perform diagnosis of “COMPRESSOR DOES NOT OPERATE” in “SYMPTOM DIAGNOSIS”.
HAC-225, "Diagnosis Procedure"
2.
CHECK DRIVE BELT
Check tension of drive belt. Refer to
(HRA2DDT engine models),
(MR16DDT engine models),
(K9K
engine models) or
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Adjust or replace drive belt depending on the inspection results.
3.
CHECK REFRIGERANT CYCLE PRESSURE
Connect recovery/recycling recharging equipment to the vehicle and perform pressure inspection with gauge.
Refer to
(HRA2DDT and MR16DDT engine models for Europe),
(K9K and R9M engine models for Europe),
(HRA2DDT, MR16DDT and
MR20DD engine models except for Europe) or
except for Europe).
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> Repair or replace parts depending on the inspection results.
4.
CHECK ECV
Perform ECV circuit diagnosis. Refer to
HAC-215, "Diagnosis Procedure"
Is the inspection result normal?
YES
>> GO TO 5.
NO
>> Repair or replace parts depending on the inspection results.
5.
CHECK AIR LEAKAGE FROM EACH DUCT
Check duct and nozzle, etc. of the air conditioning system for leakage.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Repair or replace parts depending on the inspection results.
INSUFFICIENT HEATING
HAC-223
< SYMPTOM DIAGNOSIS >
[MANUAL AIR CONDITIONING]
C
D
E
F
G
H
J
K
L
M
A
B
HAC
N
O
P
INSUFFICIENT HEATING
Description
INFOID:0000000010432576
Symptom
• Insufficient heating
• No warm air comes out. (Air flow volume is normal.)
Diagnosis Procedure
INFOID:0000000010432577
NOTE:
Perform self-diagnoses with CONSULT before performing symptom diagnosis. If any DTC is detected, per-
form the corresponding diagnosis.
1.
CHECK COOLING SYSTEM
1.
Check engine coolant level and check for leakage. Refer to
(HRA2DDT engine mod-
els),
(MR16DDT engine models),
(MR20DD engine models),
(K9K engine models) or
2.
Check reservoir tank cap. Refer to
(MR16DDT engine models),
(MR20DD engine models),
(K9K
engine models) or
(R9M engine models).
3.
Check water flow sounds of the engine coolant. Refer to
(MR20DD engine models),
(K9K engine models) or
(R9M engine models).
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Refill engine coolant and repair or replace the parts depending on the inspection results.
2.
CHECK HEATER HOSE
Check installation of heater hose by visually or touching.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Repair or replace parts depending on the inspection results.
3.
CHECK HEATER CORE
1.
Check temperature of inlet hose and outlet hose of heater core.
2.
Check that inlet side of heater core is hot and the outlet side is slightly lower than/almost equal to the inlet
side.
CAUTION:
Always perform the temperature inspection in a short period of time because the engine coolant
temperature is very hot.
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> Replace heater core. Refer to
HA-46, "HEATER CORE : Removal and Installation"
(HRA2DDT
and MR16DDT engine models for Europe),
HA-90, "HEATER CORE : Removal and Installation"
(K9K and R9M engine models for Europe),
HA-139, "HEATER CORE : Removal and Installation"
(HRA2DDT, MR16DDT and MR20DD engine models except for Europe) or
CORE : Removal and Installation"
(K9K and R9M engine models except for Europe).
4.
CHECK AIR LEAKAGE FROM EACH DUCT
Check duct and nozzle, etc. of the air conditioning system for air leakage.
Is the inspection result normal?
YES-1 >> With PTC heater: GO TO 5.
YES-2 >> Without PTC heater: INSPECTION END
NO
>> Repair or replace parts depending on the inspection results.
5.
CHECK PTC HEATER
Perform PTC heater diagnosis. Refer to
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