Index Nissan Nissan Altima L32 (2007-2009 year) - Service and Repair Manual

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Nissan Altima L32. Manual - part 807

HAC-2

Component Function Check ...................................

Diagnosis Procedure ..............................................

ECU DIAGNOSIS ........................................

AIR CONDITIONER CONTROL ........................

Reference Value .....................................................

Wiring Diagram - Air Conditioner Control (Auto) -
Coupe .....................................................................

Wiring Diagram - Air Conditioner Control (Auto) -
Sedan .....................................................................

SYMPTOM DIAGNOSIS .............................

AIR CONDITIONER CONTROL ........................

Symptom Matrix Chart ..........................................

INSUFFICIENT COOLING .................................

Component Function Check ...................................

Diagnostic Work Flow .............................................

Performance Chart .................................................

Trouble Diagnosis For Abnormal Pressure .............

INSUFFICIENT HEATING .................................

Component Function Check ...................................

NOISE ................................................................

Component Function Check ...................................

SELF-DIAGNOSIS CANNOT BE PER-
FORMED ............................................................

Diagnosis Procedure ..............................................

MEMORY FUNCTION DOES NOT OPERATE ...

Diagnosis Procedure ..............................................

PRECAUTION .............................................

PRECAUTIONS .................................................

Supplemental Restraint System (SRS) "AIR BAG"
and "SEAT BELT PRE-TENSIONER" ....................

Precaution Necessary for Steering Wheel Rota-
tion after Battery Disconnect ..................................

Working with HFC-134a (R-134a) ..........................

Precaution for Service Equipment ..........................

MANUAL AIR CONDITIONER

BASIC INSPECTION ..................................

DIAGNOSIS AND REPAIR WORKFLOW .......

Work Flow ..............................................................

INSPECTION AND ADJUSTMENT .................

Description & Conditions .......................................

Operational Check .................................................

FUNCTION DIAGNOSIS ............................

FUNCTION INFORMATION ............................

Component Part Location ......................................

Component’s Role .................................................

AIR CONDITIONER CONTROL .......................

System Diagram ...................................................

System Description ...............................................

Component Part Location .....................................

Component Description ........................................

DIAGNOSIS SYSTEM (ECM) ...........................

CONSULT-III Function ..........................................

COMPONENT DIAGNOSIS ......................

LAN SYSTEM CIRCUIT ...................................

Description ............................................................

Diagnosis Procedure .............................................

MODE DOOR MOTOR .....................................

Description ............................................................

Diagnosis Procedure .............................................

AIR MIX DOOR MOTOR ..................................

Description ............................................................

Diagnosis Procedure .............................................

INTAKE DOOR MOTOR ...................................

Description ............................................................

Diagnosis Procedure .............................................

BLOWER MOTOR ............................................

Description ............................................................

Component Function Check .................................

Diagnosis Procedure .............................................

MAGNET CLUTCH ...........................................

Component Function Check .................................

Diagnosis Procedure .............................................

POWER SUPPLY AND GROUND CIRCUIT
FOR FRONT AIR CONTROL ...........................

Description ............................................................

Component Function Check .................................

Diagnosis Procedure .............................................

ECU DIAGNOSIS ......................................

AIR CONDITIONER CONTROL .......................

Reference Value ...................................................

Wiring Diagram - Air Conditioner Control (Manual)
- Coupe .................................................................

Wiring Diagram - Air Conditioner Control (Manual)
- Sedan .................................................................

SYMPTOM DIAGNOSIS ...........................

AIR CONDITIONER CONTROL .......................

Symptom Matrix Chart .........................................

INSUFFICIENT COOLING ................................

Component Function Check .................................

Diagnostic Work Flow ...........................................

Performance Chart ................................................

Trouble Diagnosis For Abnormal Pressure ...........

HAC-4

< BASIC INSPECTION >

[AUTOMATIC AIR CONDITIONER]

DIAGNOSIS AND REPAIR WORKFLOW

BASIC INSPECTION

DIAGNOSIS AND REPAIR WORKFLOW

Work Flow

INFOID:0000000004498185

DETAILED FLOW

1.

LISTEN TO CUSTOMER COMPLAINT

Listen to customer complaint. Get detailed information about the conditions and environment when the symp-

tom occurs.

>> GO TO 2

2.

VERIFY THE SYMPTOM WITH OPERATIONAL CHECK

Verify the symptom with operational check. Refer to

HAC-5, "Description and Conditions"

>> GO TO 3

3.

GO TO APPROPRIATE TROUBLE DIAGNOSIS

Go to appropriate trouble diagnosis. Refer to

HAC-83, "Symptom Matrix Chart"

below.

>> GO TO 4

4.

REPAIR OR REPLACE

Repair or replace the specific parts.

>> GO TO 5

5.

FINAL CHECK

Final check.
Is the inspection result normal?

YES

>> Inspection End.

NO

>> GO TO 3

INSPECTION AND ADJUSTMENT

HAC-5

< BASIC INSPECTION >

[AUTOMATIC AIR CONDITIONER]

C

D

E

F

G

H

J

K

L

M

A

B

HAC

N

O

P

INSPECTION AND ADJUSTMENT

Description and Conditions

INFOID:0000000004498186

DESCRIPTION

The purpose of the operational check is to confirm that the system operates properly.

CONDITIONS:

• Engine running and at normal operation temperature.

Operational Check

INFOID:0000000004498187

STEP 1: Check Blower

1. Turn blower control dial clockwise, blower should operate on low speed.
2. Continue turning blower control dial clockwise, and continue checking blower speeds until all speeds are

checked.

3. Leave blower on HI speed.
If NG, go to

HAC-42, "Diagnosis Procedure"

If OK, continue with next check.

STEP 2: Check Discharge Air

1. Press each mode switch and press DEF (

) switch.

2. Each mode position indicator should illuminate.
3. Confirm that discharge air comes out according to the air distribution table. Refer to

HAC-14, "System

.

NOTE:

Confirm that the compressor clutch is engaged (audio or visual inspection) and intake door is in the FRE
(

) position when the DEF (

) is selected.

Intake door position is checked in the next step.

If NG, go to

HAC-32, "Diagnosis Procedure"

If OK, continue with next check.

STEP 3: Check Recirculation

1. Press REC (

) switch.

Recirculation indicator should illuminate.

2. Press REC (

) switch a second time.

3. Listen for intake door position change (you should hear blower sound change slightly).
If NG, go to

HAC-35, "Diagnosis Procedure"

If OK, continue with next check.

STEP 4: Check Temperature Decrease

1. Turn the temperature dial counterclockwise to 18

°C (60F°).

2. Check for cold air at discharge air outlets.
If NG, go to

HAC-84, "Component Function Check"

.

If OK, continue with next check.

STEP 5: Check Temperature Increase

1. Turn the temperature dial clockwise to 32

°C (90°F).

2. Check for hot air at discharge air outlets.
If NG, go to

HAC-92, "Component Function Check"

.

If OK, continue with next check.

STEP 6: Check AUTO Mode

1. Press the AUTO switch.

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