Nissan Sentra. Manual - part 547

HAC-36

< ECU DIAGNOSIS INFORMATION >

[AUTOMATIC AIR CONDITIONER]

A/C AUTO AMP.

14

(LG)

30

(B)

Blower fan ON signal

Output

• Ignition switch ON
• Blower motor: OFF

• Ignition switch ON
• Blower motor: ON

15

(Y)

30

(B)

A/C ON signal

Output

• Ignition switch ON
• A/C switch: OFF (A/C indi-

cator: OFF)

• Ignition switch ON
• A/C switch: ON (A/C indi-

cator: ON)

16

(W)

30

(B)

RR DEF signal

Output

Defroster 
switch

OFF

0 V

ON

12 V

17

(BR)

30

(B)

A/MIX 
drive 4

Air mix door motor 
(passenger side) 
drive signal

Output

• Ignition switch ON
• Right after the tempera-

ture control switch (pas-
senger side) operation

18

(SB)

30

(B)

A/MIX 
drive 3

19

(LG)

30

(B)

A/MIX 
drive 2

20

(L)

30

(B)

A/MIX 
drive 1

21

(W)

30

(B)

Ignition power supply

Input

Ignition switch ON

11 – 14 V

22

(SB)

30

(B)

Intake door motor PBR feedback 
signal

Input

• Ignition switch ON
• Intake switch: REC

0.2 – 0.8 V

• Ignition switch ON
• Intake switch: FRE

4.2 – 4.8 V

25

(R)

30

(B)

RR DEF feedback

Input

Defroster 
switch

OFF

0 V

ON

12 V

Terminal No.

(Wire color)

Description

Condition

Value

+

−

Signal name

Input/

Output

JMIIA0941GB

PKIB4960J

JPMIA0012GB

JMIIA0941GB

JPIIA1647GB

A/C AUTO AMP.

HAC-37

< ECU DIAGNOSIS INFORMATION >

[AUTOMATIC AIR CONDITIONER]

C

D

E

F

G

H

J

K

L

M

A

B

HAC

N

O

P

DTC Inspection Priority Chart

INFOID:0000000009757636

If some DTCs are displayed at the same time, perform inspections one by one based on the following priority

chart.

27

(LG)

30

(B)

Communication signal (A/C con-
trol 

→ A/C auto amp.)

Input

Ignition switch ON

28

(BR)

30

(B)

Communication signal (A/C auto 
amp. 

→ A/C control)

Output

Ignition switch ON

30

(B)

Ground

Ground

—

Ignition switch ON

0 – 0.1 V

31

(P)

30

(B)

A/MIX 
drive 4

Air mix door motor 
(driver side) drive 
signal

Output

• Ignition switch ON
• Right after the tempera-

ture control switch (driver 
side) operation

32

(BR)

30

(B)

A/MIX 
drive 3

33

(R)

30

(B)

A/MIX 
drive 2

34

(W)

30

(B)

A/MIX 
drive 1

35

(G)

30

(B)

FRE

Intake door motor 
drive signal

Output

• Ignition switch ON
• Intake switch: REC 

→ 

FRE

9.5 – 13.5 V

• Ignition switch ON
• Intake switch: FRE 

→ 

REC

0 – 1 V

36

(V)

30

(B)

REC

• Ignition switch ON
• Intake switch: FRE 

→ 

REC

9.5 – 13.5 V

• Ignition switch ON
• Intake switch: REC 

→ 

FRE

0 – 1 V

37

(GR)

30

(B)

MODE 
drive 4

Mode door motor 
drive signal

Output

• Ignition switch ON
• Right after the MODE 

switch operation

38

(G)

30

(B)

MODE 
drive 3

39

(Y)

30

(B)

MODE 
drive 2

40

(O)

30

(B)

MODE 
drive 1

Terminal No.

(Wire color)

Description

Condition

Value

+

−

Signal name

Input/

Output

SJIA1522J

SJIA1521J

JPIIA1647GB

JPIIA1647GB

HAC-38

< ECU DIAGNOSIS INFORMATION >

[AUTOMATIC AIR CONDITIONER]

A/C AUTO AMP.

DTC Index

INFOID:0000000009757637

Priority

Detected items (DTC)

1

• U1000: CAN COMM CIRCUIT
• U1010: CONTROL UNIT (CAN)

2

• B257B: AMB TEMP SEN (SHORT)
• B257C: AMB TEMP SEN (OPEN)
• B2578: IN CAR SENSOR (OUT OF RANGE[LOW])
• B2579: IN CAR SENSOR (OUT OF RANGE[HI])
• B2581: EVAP TEMP SEN (SHORT)
• B2582: EVAP TEMP SEN (OPEN)
• B2630: SUNLOAD SEN (SHORT)
• B2631: SUNLOAD SEN (OPEN)
• B27A2: DR AIRMIX ACTR (TERMINAL 1)
• B27A3: DR AIRMIX ACTR (TERMINAL 2)
• B27A4: DR AIRMIX ACTR (TERMINAL 3)
• B27A5: DR AIRMIX ACTR (TERMINAL 4)
• B27AA: PASS AIRMIX ACTR (TERMINAL 1)
• B27AB: PASS AIRMIX ACTR (TERMINAL 2)
• B27AC: PASS AIRMIX ACTR (TERMINAL 3)
• B27AD: PASS AIRMIX ACTR (TERMINAL 4)
• B27A0: INTAKE ACTR (OUT OF RANGE[HI])
• B27A1: INTAKE ACTR (OUT OF RANGE[LOW])
• B27A6: MODE ACTR (TERMINAL 1)
• B27A7: MODE ACTR (TERMINAL 2)
• B27A8: MODE ACTR (TERMINAL 3)
• B27A9: MODE ACTR (TERMINAL 4)

DTC

Items

(CONSULT screen terms)

Reference

U1000

CAN COMM CIRCUIT

HAC-58, "DTC Logic"

U1010

CONTROL UNIT (CAN)

HAC-59, "DTC Logic"

B2578

IN-VEHICLE SENSOR

HAC-60, "DTC Logic"

B2579

IN-VEHICLE SENSOR

HAC-60, "DTC Logic"

B257B

AMBIENT SENOR

HAC-63, "DTC Logic"

B257C

AMBIENT SENOR

HAC-63, "DTC Logic"

B2581

INTAKE SENSOR

HAC-66, "DTC Logic"

B2582

INTAKE SENSOR

HAC-66, "DTC Logic"

B2630

*

SUNLOAD SENSOR

HAC-69, "DTC Logic"

B2631

*

SUNLOAD SENSOR

HAC-69, "DTC Logic"

B27A0

INTAKE DOOR MOTOR

HAC-79, "DTC Logic"

B27A1

INTAKE DOOR MOTOR

HAC-79, "DTC Logic"

B27A2

DR AIR MIX DOOR MOT

HAC-72, "DTC Logic"

B27A3

DR AIR MIX DOOR MOT

HAC-72, "DTC Logic"

B27A4

DR AIR MIX DOOR MOT

HAC-72, "DTC Logic"

B27A5

DR AIR MIX DOOR MOT

HAC-72, "DTC Logic"

B27AA

AS AIR MIX DOOR MOT

HAC-74, "DTC Logic"

B27AB

AS AIR MIX DOOR MOT

HAC-74, "DTC Logic"

B27AC

AS AIR MIX DOOR MOT

HAC-74, "DTC Logic"

B27AD

AS AIR MIX DOOR MOT

HAC-74, "DTC Logic"

B27A6

MODE DOOR MOTOR

HAC-77, "DTC Logic"

B27A7

MODE DOOR MOTOR

HAC-77, "DTC Logic"

A/C AUTO AMP.

HAC-39

< ECU DIAGNOSIS INFORMATION >

[AUTOMATIC AIR CONDITIONER]

C

D

E

F

G

H

J

K

L

M

A

B

HAC

N

O

P

*: Perform self-diagnosis under direct sunlight. When performing indoors, aim a light (more than 60 W) at sunload sensor, otherwise self-
diagnosis reports an error even though the sunload sensor is functioning normally.

B27A8

MODE DOOR MOTOR

HAC-77, "DTC Logic"

B27A9

MODE DOOR MOTOR

HAC-77, "DTC Logic"

DTC

Items

(CONSULT screen terms)

Reference