Nissan Quest E52. Instruction — part 751

HAC-134

< SYMPTOM DIAGNOSIS >

[AUTOMATIC AIR CONDITIONING]

FRONT AUTOMATIC AIR CONDITIONING SYSTEM

SYMPTOM DIAGNOSIS

FRONT AUTOMATIC AIR CONDITIONING SYSTEM

Symptom Table

INFOID:0000000009652581

NOTE:
Perform self-diagnoses with on board diagnosis and CONSULT before performing the symptom diagnosis. If
any malfunction result or DTC is detected, perform the corresponding diagnosis.

Symptom

Corresponding malfunction part

Check item/Reference

• Front air conditioning does not activate.
• Front air conditioning cannot be controlled.
• Operation status of air conditioning is not indicated on

display.

• A/C auto amp. ignition power supply

circuit

• Front A/C control (A/C auto amp.)

HAC-87, "A/C AUTO AMP. : Di-
agnosis Procedure"

• Memory function does not operate normally.
• The setting is not maintained. (It returns to initial condi-

tion)

• A/C auto amp. battery power supply

circuit

• Front A/C control (A/C auto amp.)

HAC-87, "A/C AUTO AMP. : Di-
agnosis Procedure"

Discharge air temperature (driver side) does not change.

Front air mix door motor (driver side)
system installation condition

Check front air mix door motor
(driver side) system is properly
installed. Refer to

HAC-151,

"Exploded View"

.

Discharge air temperature (passenger side) does not
change.

Front air mix door motor (passenger
side) system installation condition

Check front air mix door motor
(passenger side) system is
properly installed. Refer to

HAC-

151, "Exploded View"

.

Air outlet does not change.

Front mode door motor system instal-
lation condition

Check front mode door motor
system is properly installed. Re-
fer to

HAC-151, "Exploded

View"

.

Air inlet does not change.

Intake door motor system installation
condition

Check intake door motor system
is properly installed. Refer to

HAC-151, "Exploded View"

.

Front blower motor does not operate.

• Front blower motor power supply cir-

cuit.

• Front blower motor control signal cir-

cuit

• Front blower motor
• Front A/C control (A/C auto amp.)

HAC-125, "Diagnosis Proce-
dure"

Compressor does not operate.

• Magnet clutch
• The circuit between magnet clutch

and IPDM E/R

• IPDM E/R (A/C relay)
• The circuit between ECM and refrig-

erant pressure sensor

• Refrigerant pressure sensor
• CAN communication line
• A/C ON signal circuit
• Blower fan ON signal circuit
• Front A/C control (A/C auto amp.)

HAC-142, "Diagnosis Proce-
dure"

• Insufficient cooling
• No cool air comes out. (Air flow volume is normal.)

• Magnet clutch control system
• Drive belt slipping
• Cooler cycle
• Air leakage from each duct
• A/C auto amp. connection recogni-

tion signal circuit

• Temperature setting trimmer (front)

HAC-138, "FRONT AUTOMAT-
IC AIR CONDITIONING SYS-
TEM : Diagnosis Procedure"

FRONT AUTOMATIC AIR CONDITIONING SYSTEM

HAC-135

< SYMPTOM DIAGNOSIS >

[AUTOMATIC AIR CONDITIONING]

C

D

E

F

G

H

J

K

L

M

A

B

HAC

N

O

P

• Insufficient heating
• No warm air comes out. (Air flow volume is normal.)

• Engine cooling system
• Front heater hose
• Front heater core
• Air leakage from each duct
• Temperature setting trimmer (front)

HAC-140, "FRONT AUTOMAT-
IC AIR CONDITIONING SYS-
TEM : Diagnosis Procedure"

Noise is heard when the front
air conditioning operates.

During compressor op-
eration

Cooler cycle

HA-29, "Symptom Table"

During front blower mo-
tor operation

• Mixing any foreign object in front

blower motor

• Front blower motor fan breakage
• Front blower motor rotation inferiori-

ty

HAC-126, "Component Inspec-
tion (Front Blower Motor)"

Symptom

Corresponding malfunction part

Check item/Reference

HAC-136

< SYMPTOM DIAGNOSIS >

[AUTOMATIC AIR CONDITIONING]

REAR AUTOMATIC AIR CONDITIONING SYSTEM

REAR AUTOMATIC AIR CONDITIONING SYSTEM

Symptom Table

INFOID:0000000009652582

NOTE:
• Perform self-diagnoses with on board diagnosis and CONSULT, before performing the symptom diagnosis.

If any malfunction result or DTC is detected, perform the corresponding diagnosis.

• The following table is based on the condition that front automatic air conditioning system operates normally.

Symptom

Corresponding malfunction part

Check item/Reference

• Rear air conditioning cannot be controlled by front A/C

control.

• Operation status of rear air conditioning is not indicated

on front A/C control display.

Front A/C control (A/C auto amp.)

Replace front A/C control (A/C
auto amp.). Refer to

HAC-143,

"Removal and Installation"

.

Rear air conditioning cannot be
controlled by rear A/C control.

Operation status of rear
air conditioning is indi-
cated on rear A/C control
display.

Communication signal (rear A/C con-
trol

→

A/C auto amp.)

Refer to

HAC-91, "Diagnosis

Procedure"

.

Operation status of rear
air conditioning is not in-
dicated on rear A/C con-
trol display.

Communication signal (A/C auto amp.

→

rear A/C control)

Refer to

HAC-91, "Diagnosis

Procedure"

.

Rear A/C control power supply circuit

Refer to

HAC-88, "REAR A/C

CONTROL : Diagnosis Proce-
dure"

.

Discharge air temperature does not change.

Rear air mix door motor system instal-
lation condition

Check rear air mix door motor
system is properly installed. Re-
fer to

HAC-151, "Exploded

View"

.

Air outlet does not change.

Rear mode door motor system installa-
tion condition

Check rear mode door motor
system is properly installed. Re-
fer to

HAC-151, "Exploded

View"

.

Rear blower motor does not operate.

• Rear blower motor power supply cir-

cuit.

• Rear blower motor control signal cir-

cuit

• Rear blower motor
• Front A/C control (A/C auto amp.)

HAC-128, "Diagnosis Proce-
dure"

• Insufficient cooling
• No cool air comes out. (Air flow volume is normal.)

• Cooler cycle
• Air leakage from each duct
• Temperature setting trimmer (rear)

HAC-139, "REAR AUTOMATIC
AIR CONDITIONING SYSTEM :
Diagnosis Procedure"

• Insufficient heating
• No warm air comes out. (Air flow volume is normal.)

• Rear heater hose
• Rear heater core
• Air leakage from each duct
• Temperature setting trimmer (rear)

HAC-141, "REAR AUTOMATIC
AIR CONDITIONING SYSTEM :
Diagnosis Procedure"

Noise is heard when the rear blower motor operates.

• Mixing any foreign object in rear

blower motor

• Rear blower motor fan breakage
• Rear blower motor rotation inferiority

HAC-129, "Component Inspec-
tion (Rear Blower Motor)"

ACCS (ADVANCED CLIMATE CONTROL SYSTEM)

HAC-137

< SYMPTOM DIAGNOSIS >

[AUTOMATIC AIR CONDITIONING]

C

D

E

F

G

H

J

K

L

M

A

B

HAC

N

O

P

ACCS (ADVANCED CLIMATE CONTROL SYSTEM)

Symptom Table

INFOID:0000000009652583

NOTE:
• Perform self-diagnoses with on board diagnosis and CONSULT, before performing the symptom diagnosis.

If any malfunction result or DTC is detected, perform the corresponding diagnosis.

• The following table is based on the condition that front automatic air conditioning system operates normally.

Symptom

Corresponding malfunction part

Check item/Reference

• AUTO intake switch cannot be operated
• Automatic intake control (exhaust gas/outside odor de-

tecting mechanism) does not operate normally

• Ambient air status indication on front A/C control display

does not change

Front A/C control (A/C auto amp.)

Replace front A/C control (A/C
auto amp.). Refer to

HAC-143,

"Removal and Installation"

.

Plasmacluster

™

ion does not operate.

• Ionizer power supply circuit
• Ionizer ON/OFF control signal circuit
• Ionizer
• Front A/C control (A/C auto amp.)

Refer to

HAC-132, "Diagnosis

Procedure"

.

Operation status of Plasmacluster

™

ion does not switch

according to air flow.

Front A/C control (A/C auto amp.)

Replace front A/C control (A/C
auto amp.). Refer to

HAC-143,

"Removal and Installation"

.