Nissan Qashqai J11. Manual — part 1164
HAC-292
< DTC/CIRCUIT DIAGNOSIS >
[MANUAL HEATER ]
PTC HEATER
Component Inspection (PTC Heater)
INFOID:0000000010499432
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-297, "Removal and Installation"
.
Terminal
Resistance (
Ω
)
1
2
Except 0 or
∞
3
2 and 4
5
4
MANUAL HEATER SYSTEM
HAC-293
< SYMPTOM DIAGNOSIS >
[MANUAL HEATER ]
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SYMPTOM DIAGNOSIS
MANUAL HEATER SYSTEM
Symptom Table
INFOID:0000000010433477
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-284, "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-285, "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.
• 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
HAC-294, "Diagnosis Procedure"
Noise is heard when the manual heater operates.
• Mixing any foreign object in blower
motor
• Blower motor fan breakage
• Blower motor rotation inferiority
Check blower motor.
HAC-294
< SYMPTOM DIAGNOSIS >
[MANUAL HEATER ]
INSUFFICIENT HEATING
INSUFFICIENT HEATING
Description
INFOID:0000000010433480
Symptom
• Insufficient heating
• No warm air comes out. (Air flow volume is normal.)
Diagnosis Procedure
INFOID:0000000010433481
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),
(K9K engine models) or
(R9M engine models).
2.
Check radiator cap. Refer to
engine models) or
(R9M engine models).
3.
Check water flow sounds of the engine coolant. Refer to
(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
engine models) or
HA-90, "HEATER CORE : Removal and Installation"
models).
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
>> GO TO 5.
NO
>> Repair or replace parts depending on the inspection results.
5.
CHECK PTC HEATER
Perform PTC heater diagnosis. Refer to
HAC-290, "Diagnosis Procedure"
.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Repair or replace parts depending on the inspection results.
HEATER CONTROL (A/C AMP.)
HAC-295
< REMOVAL AND INSTALLATION >
[MANUAL HEATER ]
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REMOVAL AND INSTALLATION
HEATER CONTROL (A/C AMP.)
Exploded View
INFOID:0000000010433484
.
Removal and Installation
INFOID:0000000010433485
REMOVAL
1.
Disengage fixing metal clips and pawls, and then remove A/C
control from instrument panel assembly according to numerical
order 1
→
2 indicated by arrows as shown in the figure.
2.
Disconnect harness connectors.
INSTALLATION
Install in the reverse order of removal.
: Pawl
: Metal clip
JMIIA3390ZZ
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