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 

HAC-

299, "Exploded View"

.

Air outlet does not change.

Mode door motor system installation 
condition

Check mode door motor system is 
properly installed. Refer to 

HAC-

299, "Exploded View"

.

Air inlet does not change.

Intake door motor system installation 
condition

Check intake door motor system is 
properly installed. Refer to 

HAC-

299, "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-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-288, "Component Inspection 
(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 

CO-12, "Inspection"

 (HRA2DDT engine mod-

els), 

CO-94, "Inspection"

 (K9K engine models) or 

CO-119, "Inspection"

 (R9M engine models).

2.

Check radiator cap. Refer to 

CO-16, "Inspection"

 (HRA2DDT 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-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

engine models) or 

HA-90, "HEATER CORE : Removal and Installation"

 (K9K and R9M engine

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

Refer to 

IP-12, "Exploded View"

.

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