Nissan Altima L32. Manual - part 830

HAC-94

< SYMPTOM DIAGNOSIS >

[AUTOMATIC AIR CONDITIONER]

NOISE

NOISE

Component Function Check

INFOID:0000000004498240

SYMPTOM: Noise

INSPECTION FLOW

AWIIA1241GB

NOISE

HAC-95

< SYMPTOM DIAGNOSIS >

[AUTOMATIC AIR CONDITIONER]

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*1

HAC-5, "Operational Check"

*2

EM-16, "Checking Drive Belts"

 

(QR25DE) or 

EM-121, "Checking 

Drive Belts"

 (VQ35DE)

*3

HAC-87, "Performance Chart"

*4

HA-45, "Removal and Installation for 
Expansion Valve"

*5

HA-35, "Removal and Installation for 
Compressor - QR25DE Models"

 or 

HA-36, "Removal and Installation for 
Compressor - VQ35DE Models"

*6

HA-35, "Removal and Installation for 
Compressor - QR25DE Models"

 or 

HA-36, "Removal and Installation for 
Compressor - VQ35DE Models"

*7

HA-21, "Maintenance of Oil Quantity 
in Compressor"

 

*8

HA-42, "Removal and Installation for 
Condenser"

HAC-96

< SYMPTOM DIAGNOSIS >

[AUTOMATIC AIR CONDITIONER]

SELF-DIAGNOSIS CANNOT BE PERFORMED

SELF-DIAGNOSIS CANNOT BE PERFORMED

Diagnosis Procedure

INFOID:0000000004498242

SYMPTOM: Self-diagnosis cannot be performed.

1.

CHECK SELF-DIAGNOSIS FUNCTION

1. Press ignition switch ON.

2. Set in self-diagnosis mode as follows. Within 10 seconds after starting engine (ignition switch is Pressed

ON.), press OFF switch for at least 5 seconds.

NOTE:

• If battery voltage drops below 12 V during diagnosis STEP-3, door motor speed becomes slower and as a

result, the system may generate an error even when operation is normal. To avoid this, start engine before

performing this diagnosis.

• Former STEP-1 (LEDs are checked) does not exist in this self-diagnosis function.

• OFF switch may not be recognized according to the timing of pressing it. Operate OFF switch after turning

the intake switch LEDs (REC) ON.

Does self-diagnosis function operate?

YES

>> Inspection End.

NO

>> GO TO 2

2.

PERFORM COMPLETE OPERATIONAL CHECK

Perform a complete operational check and check for any symptoms. Refer to 

HAC-5, "Description and Condi-

tions"

.

Can a symptom be duplicated?

YES

>> Refer to 

HAC-83, "Symptom Matrix Chart"

.

NO

>> GO TO 3

3.

CHECK FOR SERVICE BULLETINS

Check for any service bulletins.
Have any service bulletins been issued?

YES

>> Refer to appropriate bulletin.

NO

>> GO TO 4

4.

CHECK POWER SUPPLY AND GROUND CIRCUIT OF FRONT AIR CONTROL

Check power supply and ground circuit of front air control. Refer to 

HAC-61, "Diagnosis Procedure"

.

Is the inspection result normal?

YES

>> Replace front air control. Refer to 

VTL-8, "Removal and Installation"

.

NO

>> Repair or replace malfunctioning part(s).

MEMORY FUNCTION DOES NOT OPERATE

HAC-97

< SYMPTOM DIAGNOSIS >

[AUTOMATIC AIR CONDITIONER]

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MEMORY FUNCTION DOES NOT OPERATE

Diagnosis Procedure

INFOID:0000000004498244

SYMPTOM: Memory function does not operate. The setting is not maintained (it returns to the initial condition).

Inspection procedure

1.

CHECK OPERATION

1. Set temperature control dial to 32

°C (90°F).

2. Press OFF switch.

3. Press ignition switch OFF.

4. Press ignition switch ON.

5. Press AUTO switch.

6. Check that the set temperature is maintained.
Is the inspection result normal?

YES

>> Inspection End.

NO

>> GO TO 2.

2.

CHECK POWER SUPPLY AND GROUND CIRCUIT OF FRONT AIR CONTROL 

Check power supply and ground circuit of front air control. Refer to 

HAC-61, "Diagnosis Procedure"

. 

Is the inspection result normal?

YES

>> Replace front air control. Refer to 

VTL-8, "Removal and Installation"

.

NO

>> Repair or replace malfunctioning part(s).