Nissan Qashqai J11. Manual — part 1121
HAC-120
< DTC/CIRCUIT DIAGNOSIS >
[AUTOMATIC AIR CONDITIONING]
PTC HEATER
Component Inspection (PTC Heater)
INFOID:0000000010499358
1.
CHECK PTC HEATER
Check resistance between PTC heater terminals.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Replace PTC heater. Refer to
HAC-135, "Removal and Installation"
.
Terminal
Resistance (
Ω
)
1
2
Except 0 or
∞
3
2 and 4
5
4
AUTOMATIC AIR CONDITIONER SYSTEM
HAC-121
< SYMPTOM DIAGNOSIS >
[AUTOMATIC AIR CONDITIONING]
C
D
E
F
G
H
J
K
L
M
A
B
HAC
N
O
P
SYMPTOM DIAGNOSIS
AUTOMATIC AIR CONDITIONER SYSTEM
Symptom Table
INFOID:0000000010432242
NOTE:
Perform self-diagnoses with CONSULT and on board diagnosis 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 con-
trolled.
All control
• A/C control power supply or ground
circuit
• A/C auto amp.
Check A/C control power supply
and ground circuits.
Refer to
A part of control
A/C control
A/C control display or switch indicator lamp does not
display correctly.
NOTE:
The results of A/C control on board diagnosis are nor-
mal.
A/C auto amp.
Replace A/C auto amp.
Refer to
Discharge air temperature (driver side) does not
change.
Air mix door motor (driver side) system
installation condition
Check air mix door motor (driver
side) system is properly installed.
Refer to
.
Discharge air temperature (passenger side) does not
change.
Air mix door motor (passenger side)
system installation condition
Check air mix door motor (passen-
ger side) system is properly in-
stalled. 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 transistor
• Power transistor power supply or
ground circuits
• Blower motor control or ground cir-
cuits
• Power transistor control signal cir-
cuits
• Blower motor feedback signal circuits
• A/C auto amp.
Check blower motor circuits.
HAC-110, "Diagnosis Procedure"
Compressor does not operate.
• Magnet clutch
• Magnet clutch power supply circuits
• Magnet clutch ground circuits
• IPDM E/R (A/C relay)
• The circuit between ECM and refrig-
erant pressure sensor
• Refrigerant pressure sensor
• ECM
• A/C auto amp.
Check magnet clutch circuits.
HAC-122
< SYMPTOM DIAGNOSIS >
[AUTOMATIC AIR CONDITIONING]
AUTOMATIC AIR CONDITIONER SYSTEM
• 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
• Temperature setting trimmer
HAC-123, "Diagnosis Procedure"
• 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)
• Temperature setting trimmer
HAC-125, "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)
•
(K9K
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-112, "Component Inspection
(Blower Motor)"
Symptom
Corresponding malfunction part
Check item/Reference
INSUFFICIENT HEATING
HAC-123
< SYMPTOM DIAGNOSIS >
[AUTOMATIC AIR CONDITIONING]
C
D
E
F
G
H
J
K
L
M
A
B
HAC
N
O
P
INSUFFICIENT HEATING
Description
INFOID:0000000010432245
Symptom
• Insufficient heating
• No warm air comes out. (Air flow volume is normal.)
Diagnosis Procedure
INFOID:0000000010432246
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
els),
(MR20DD engine models),
(R9M engine models).
2.
Check reservoir tank cap. Refer to
(MR20DD engine models),
(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-45, "HEATER CORE : Removal and Installation"
(HRA2DDT
and MR20DD engine models for Europe),
HA-89, "HEATER CORE : Removal and Installation"
(K9K and R9M engine models for Europe),
HA-137, "HEATER CORE : Removal and Installation"
(HRA2DDT and MR20DD engine models except for Europe) or
(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: GO TO 6.
NO
>> Repair or replace parts depending on the inspection results.
5.
CHECK PTC HEATER
Perform PTC heater diagnosis. Refer to
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