Nissan Altima HL32 Hybrid. Manual - part 495

HAC-1

VENTILATION, HEATER & AIR CONDITIONER

C

D

E

F

G

H

J

K

L

M

SECTION 

HAC

A

B

HAC

N

O

P

CONTENTS

HEATER & AIR CONDITIONING CONTROL SYSTEM

AUTOMATIC AIR CONDITIONER

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

4

DIAGNOSIS AND REPAIR WORKFLOW  ..........

4

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

4

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

5

Description & Inspection  ...........................................

5

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

8

AUTOMATIC AIR CONDITIONER SYSTEM  ......

8

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

8

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

8

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

14

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

16

CAN COMMUNICATION SYSTEM  ....................

18

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

18

DIAGNOSIS SYSTEM (AUTO AMP.)  ................

19

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

19

DIAGNOSIS SYSTEM (BCM)  ............................

23

COMMON ITEM .........................................................

23

COMMON ITEM : CONSULT-III Function ...............

23

AIR CONDITIONER ...................................................

23

AIR CONDITIONER : CONSULT-III Function 
(BCM - AUTO AIR CONDITIONER)  .......................

23

MODE DOOR CONTROL SYSTEM ...................

24

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

24

AIR MIX DOOR CONTROL SYSTEM  ................

26

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

26

INTAKE DOOR CONTROL SYSTEM  ................

28

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

28

BLOWER MOTOR CONTROL SYSTEM  ...........

30

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

30

ELECTRIC COMPRESSOR CONTROL SYS-
TEM ...................................................................

32

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

32

HEATER PUMP CONTROL SYSTEM  ..............

33

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

33

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

34

B2578, B2579 IN-VEHICLE SENSOR  ..............

34

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

34

DTC Logic ................................................................

35

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

35

Component Inspection .............................................

36

B257B, B257C AMBIENT SENSOR .................

37

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

37

DTC Logic ................................................................

37

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

38

Component Inspection .............................................

39

B2581, B2582 INTAKE SENSOR  .....................

40

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

40

DTC Logic ................................................................

40

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

40

Component Inspection .............................................

42

B2630, B2631 SUNLOAD SENSOR .................

43

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

43

DTC Logic ................................................................

43

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

44

Component Inspection .............................................

45

B2632, B2633 AIR MIX DOOR MOTOR PBR 
(DRIVER SIDE)  .................................................

47

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

47

DTC Logic ................................................................

47

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

47

B2634, B2635 AIR MIX DOOR MOTOR PBR 
(PASSENGER SIDE) ........................................

50

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

50

HAC-2

DTC Logic ...............................................................

50

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

50

B2636, B2637, B2638, B2639, B2654, B2655 
MODE DOOR MOTOR  ......................................

53

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

53

DTC Logic ...............................................................

53

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

53

B263D B263E, B263F, B2656 INTAKE DOOR 
MOTOR ..............................................................

56

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

56

DTC Logic ...............................................................

56

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

56

B2640, B2641, B2642 ELECTRIC COMPRES-
SOR ....................................................................

59

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

59

DTC Logic ...............................................................

59

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

59

B2643, B2644 ELECTRIC COMPRESSOR  ......

62

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

62

DTC Logic ...............................................................

62

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

62

B2645, B2653 ELECTRIC COMPRESSOR  ......

63

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

63

DTC Logic ...............................................................

63

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

63

B2646, B2647, B2648, B2649, B264A, 
B264C, B264D ELECTRIC COMPRESSOR  .....

64

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

64

DTC Logic ...............................................................

64

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

64

B264E ELECTRIC COMPRESSOR  ..................

66

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

66

DTC Logic ...............................................................

66

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

66

B264F ELECTRIC COMPRESSOR ...................

67

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

67

DTC Logic ...............................................................

67

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

67

B2651, B2652 ELECTRIC COMPRESSOR  ......

69

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

69

DTC Logic ...............................................................

69

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

69

P0AA6-611 ELECTRIC COMPRESSOR ...........

71

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

71

DTC Logic ...............................................................

71

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

71

U0424 ELECTRIC COMPRESSOR ...................

74

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

74

DTC Logic ...............................................................

74

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

74

U1000 CAN COMM CIRCUIT ............................

79

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

79

DTC Logic  ...............................................................

79

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

79

U1010 CONTROL UNIT (CAN)  .........................

80

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

80

DTC Logic  ...............................................................

80

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

80

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

81

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

81

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

81

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

81

Component Inspection  ............................................

83

HEATER PUMP  .................................................

84

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

84

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

84

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

84

POWER SUPPLY AND GROUND CIRCUIT 
FOR AUTO AMP.  ..............................................

86

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

86

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

86

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

86

ELECTRIC COMPRESSOR  ..............................

88

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

88

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

89

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

90

Component Inspection  ............................................

90

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

91

ECM ...................................................................

91

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

91

HV ECU .............................................................

102

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

102

BCM (BODY CONTROL MODULE) .................

111

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

111

Terminal Layout  ....................................................

115

Physical Values .....................................................

116

AUTO AMP.  ......................................................

134

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

134

Wiring Diagram — AIR CONDITIONER CON-
TROL SYSTEM —  ................................................

138

DTC Index ............................................................

148

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

151

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

151

Diagnosis Chart By Symptom  ...............................

151

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

152

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

152

Inspection procedure  ............................................

152

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

153

HAC-3

C

D

E

F

G

H

J

K

L

M

A

B

HAC

N

O

P

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

153

Inspection procedure .............................................

153

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

155

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

155

Inspection procedure .............................................

155

MEMORY FUNCTION DOES NOT OPERATE ..

156

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

156

Inspection procedure .............................................

156

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

157

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

157

Precaution for Supplemental Restraint System 
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" ...............................................................

157

Precautions For High-Voltage System  ..................

157

Precaution for Procedure without Cowl Top Cover ..

157

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

157

Contaminated Refrigerant  .....................................

158

General Refrigerant Precaution .............................

158

Precaution for Leak Detection Dye ........................

158

A/C Identification Label ..........................................

158

Precaution for Refrigerant Connection  ..................

158

Precaution for Service of Electric Compressor ......

162

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

162

HAC-4

< BASIC INSPECTION >

[AUTOMATIC AIR CONDITIONER]

DIAGNOSIS AND REPAIR WORKFLOW

BASIC INSPECTION

DIAGNOSIS AND REPAIR WORKFLOW

Work Flow

INFOID:0000000004215294

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.

CHECK DTC

1. Check DTC.

2. Perform the following procedure if DTC is displayed.

-

Record DTC and freeze frame data. (Print them out with CONSULT-III.)

-

Erase DTC. (Refer to 

EC-82, "Diagnosis Description"

.)

-

Study the relationship between the cause detected by DTC and the symptom described by the customer.

(Symptom Table is useful. Refer to 

HAC-151, "Diagnosis Chart By Symptom"

.)

3. Check related service bulletins for information.

NOTE:

Freeze frame data is useful if the DTC is not detected.
Is any DTC detected?

YES

>> GO TO 3.

NO

>> GO TO 4.

3.

PERFORM DTC CONFIRMATION PROCEDURE

Perform DTC CONFIRMATION PROCEDURE for the displayed DTC, and then make sure that DTC is

detected again. (Refer to 

HAC-148, "DTC Index"

 below).

>> GO TO 6.

4.

VERIFY THE SYMPTOM WITH OPERATIONAL CHECK

Verify the symptom with Operational Check. Refer to 

HAC-5, "Description & Inspection"

.

>> GO TO 5.

5.

GO TO APPROPRIATE TROUBLE DIAGNOSIS

Go to appropriate trouble diagnosis (Refer to 

HAC-151, "Diagnosis Chart By Symptom"

 below).

>> GO TO 6.

6.

REPAIR OR REPLACE

Repair or replace the specific parts

>> GO TO 7.

7.

FINAL CHECK

Final check.
Is the inspection result normal?

YES

>> Inspection End.

NO

>> GO TO 2.