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 

HAC-

232, "Exploded View"

.

Air outlet does not change.

Mode door motor system installation 
condition

Check mode door motor system is 
properly installed. Refer to 

HAC-

232, "Exploded View"

.

Air inlet does not change.

Intake door motor system installation 
condition

Check intake door motor system is 
properly installed. Refer to 

HAC-

232, "Exploded View"

.

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

HAC-222, "Diagnosis Procedure"

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
•

HA-30, "Symptom Table"

 

(HRA2DDT and MR16DDT en-
gine models for Europe)

•

HA-74, "Symptom Table"

 (K9K 

and R9M engine models for Eu-
rope)

•

HA-121, "Symptom Table"

 

(HRA2DDT, MR16DDT and 
MR20DD engine models except 
for Europe)

•

HA-170, "Symptom Table"

 (K9K 

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”.

Refer to 

HAC-225, "Diagnosis Procedure"

.

2.

CHECK DRIVE BELT

Check tension of drive belt. Refer to 

EM-17, "Checking"

 (HRA2DDT engine models), 

EM-142, "Inspection"

(MR16DDT engine models), 

EM-287, "Inspection"

 (MR20DD engine models), 

EM-421, "Inspection"

 (K9K

engine models) or 

EM-520, "Checking"

 (R9M engine models).

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 

HA-28, "Symptom Table"

 (HRA2DDT and MR16DDT engine models for Europe), 

HA-72, "Symptom

Table"

 (K9K and R9M engine models for Europe), 

HA-119, "Symptom Table"

 (HRA2DDT, MR16DDT and

MR20DD engine models except for Europe) or 

HA-168, "Symptom Table"

 (K9K and R9M engine models

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 

CO-12, "Inspection"

 (HRA2DDT engine mod-

els), 

CO-42, "Inspection"

 (MR16DDT engine models), 

CO-67, "Inspection"

 (MR20DD engine models),

CO-94, "Inspection"

 (K9K engine models) or 

CO-119, "Inspection"

 (R9M engine models).

2.

Check reservoir tank cap. Refer to 

CO-16, "Inspection"

 (HRA2DDT engine models), 

CO-46, "Inspection"

(MR16DDT engine models), 

CO-70, "Inspection"

 (MR20DD engine models), 

CO-97, "Inspection"

 (K9K

engine models) or 

CO-123, "Inspection"

 (R9M engine models).

3.

Check water flow sounds of the engine coolant. Refer to 

CO-12, "Refilling"

 (HRA2DDT engine models),

CO-43, "Refilling"

 (MR16DDT engine models), 

CO-67, "Refilling"

 (MR20DD engine models), 

CO-94,

"Refilling"

 (K9K engine models) or 

CO-119, "Refilling"

 (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 

HA-187, "HEATER

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 

HAC-118, "Diagnosis Procedure"

.