Nissan Altima HL32 Hybrid. Manual - part 533

INSUFFICIENT HEATING

HAC-153

< SYMPTOM DIAGNOSIS >

[AUTOMATIC AIR CONDITIONER]

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INSUFFICIENT HEATING

Description

INFOID:0000000004215396

Symptom

• Insufficient heating

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

Inspection procedure

INFOID:0000000004215397

1.

CHECK DTC

Check DTC.
Is any DTC detected?

YES

>> Check according to 

HAC-148, "DTC Index"

.

NO

>> GO TO 2.

2.

CHECK COOLING SYSTEM

1. Check engine coolant level and check for leakage. Refer to 

CO-11, "Changing Engine Coolant"

.

2. Check radiator cap. Refer to 

CO-10, "System Inspection"

.

3. Check water flow sounds of engine coolant. Refer to 

CO-11, "Changing Engine Coolant"

.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Refill the engine coolant and repair or replace the parts according to the inspection results.

3.

CHECK SETTING OF TEMPERATURE SETTING TRIMMER

Check the setting of temperature setting trimmer using CONSULT-III. Refer to 

HAC-5, "Description & Inspec-

tion"

.

1. Perform “TEMP SET CORRECT” in “WORK SUPPORT” with CONSULT-III

2. Check that the temperature setting trimmer is set to “

− direction”. 

NOTE:

The control temperature can be set with the setting of temperature setting trimmer.

3. Set “TEMP SET CORRECT” to “0.0

°C (0.0°F)”.

Are the symptoms solved?

YES

>> Perform the setting separately if necessary. END.

NO

>> GO TO 4.

4.

CHECK OPERATION

1. Turn temperature dial (driver side) and raise temperature setting to 32

°C (90°F) after warming up the

engine.

2. Check that warm air blows from outlets.
Is the inspection result normal?

YES

>> END.

NO

>> GO TO 5.

5.

CHECK AIR LEAKAGE FROM DUCT

Check duct and nozzle, etc. of A/C system for air leakage.
Is the inspection result normal?

YES

>> GO TO 6.

NO

>> Repair or replace parts according to the inspection results.

6.

CHECK HEATER PUMP

Check heater pump function. Refer to 

HAC-84, "Component Function Check"

.

Is the inspection result normal?

YES

>> GO TO 7.

NO

>> Repair or replace parts according to the inspection results.

7.

CHECK HEATER HOSE INSTALLATION CONDITION

HAC-154

< SYMPTOM DIAGNOSIS >

[AUTOMATIC AIR CONDITIONER]

INSUFFICIENT HEATING

Check the heater hose installation condition visually (for twist, crush, etc.).
Is the inspection result normal?

YES

>> GO TO 8.

NO

>> Repair or replace parts according to the inspection results.

8.

CHECK TEMPERATURE OF HEATER HOSE

1. Check the temperature of inlet hose and outlet hose of heater core.

2. Check that the inlet side of heater core is hot and the outlet side is slightly lower than/almost equal to the

inlet side.

CAUTION:

The temperature inspection should be performed in a short time because the engine coolant tem-

perature is too hot.

Is the inspection result normal?

YES

>> GO TO 9.

NO

>> Replace the heater core after performing the procedures after the cooling system inspection

again. GO TO 2.

9.

REPLACE HEATER CORE

Replace the heater core. Refer to heater core. Refer to 

VTL-22, "Removal and Installation"

.

Are the symptoms solved?

YES

>> END.

NO

>> Perform the procedures after the cooling system inspection again. GO TO 2.

NOISE

HAC-155

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[AUTOMATIC AIR CONDITIONER]

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NOISE

Description

INFOID:0000000004215398

Symptom

• Noise

• Noise is heard when the A/C system operates.

Inspection procedure

INFOID:0000000004215399

1.

CHECK OPERATION

1. Operate the A/C system and check the operation. Refer to 

HAC-5, "Description & Inspection"

.

2. Check the parts where noise is occurring.
Can the parts where noise is occurring be checked?

YES-1 >> Noise from blower fan motor: GO TO 2.

YES-2 >> Noise from electric compressor: GO TO 3.

YES-3 >> Noise from expansion valve: GO TO 4.

YES-4 >> Noise from A/C piping (pipe, flexible hose): GO TO 6.

NO

>> END.

2.

CHECK BLOWER FAN MOTOR

1. Remove blower fan motor. Refer to 

VTL-14, "Removal and Installation"

2. Remove foreign materials that are in the blower unit.

3. Check the noise from blower fan motor again.
Is the inspection result normal?

YES

>> END.

NO

>> Replace blower fan motor. Refer to 

VTL-14, "Removal and Installation"

.

3.

REPLACE ELECRTRIC COMPRESSOR

1. Correct the refrigerant with refrigerant recover/recycling recharging equipment.

2. Recharge with the proper amount of the collected refrigerant after recycling or new refrigerant.

3. Check for the noise from electric compressor again.
Is the inspection result normal?

YES

>> END.

NO

>> Replace electric compressor. Refer to 

HA-31, "Removal and Installation"

.

4.

CHECK REFRIGERANT CYCLE PRESSURE

Connect refrigerant recovery/recycling recharging equipment to the vehicle and check the refrigerant cycle

pressure. Refer to 

HA-21, "HFC-134a (R-134a) Service Procedure"

.

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> Repair or replace the parts according to the inspection results.

5.

REPLACE EXPANSION VALVE

1. Correct the refrigerant with refrigerant recover/recycling recharging equipment.

2. Recharge with the proper amount of the collected refrigerant after recycling or new refrigerant.

3. Check for the noise from expansion valve again.
Are the symptoms solved?

YES

>> END.

NO

>> Replace expansion valve. Refer to 

HA-39, "Removal and Installation for Expansion Valve"

.

6.

CHECK A/C PIPING (PIPE, FLEXIBLE HOSE)

1. Check A/C piping (pipe, flexible hose) (for deformation and damage, etc.).

2. Check the installation condition of clips and brackets, etc. of A/C piping (pipe, flexible hose).
Is the inspection result normal?

YES

>> Fix the line with rubber or come vibration absorbing material.

NO

>> Repair or replace parts according to the inspection results.

HAC-156

< SYMPTOM DIAGNOSIS >

[AUTOMATIC AIR CONDITIONER]

MEMORY FUNCTION DOES NOT OPERATE

MEMORY FUNCTION DOES NOT OPERATE

Description

INFOID:0000000004215400

Symptom

• Memory function does not operate normally.

• The setting is not maintained. (It returns to the initial condition.)

Inspection procedure

INFOID:0000000004215401

1.

CHECK OPERATION

1. Turn ignition switch ON (READY).

2. Set temperature control dial to 32

°C (90°F).

3. Press OFF switch.

4. Turn ignition switch OFF.

5. Turn ignition switch ON (READY).

6. Press AUTO switch.

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

YES

>> END.

NO

>> GO TO 2.

2.

CHECK POWER SUPPLY AND GROUND CIRCUIT OF AUTO AMP

Check power supply and ground circuit of auto amp. Refer to 

HAC-86, "Diagnosis Procedure"

. 

Is the inspection result normal?

YES

>> Replace auto amp. Refer to 

VTL-8, "Removal and Installation"

.

NO

>> Repair or replace malfunctioning part(s).