Nissan Maxima. Manual - part 722

HAC-64

< ECU DIAGNOSIS INFORMATION >

[WITH COLOR DISPLAY]

A/C AUTO AMP.

Fail-Safe

INFOID:0000000010051010

FAIL-SAFE FUNCTION

• If a communication error exists between the A/C auto amp., the AV control unit and A/C and AV switch

assembly for 30 seconds or longer, air conditioner is controlled under the following conditions:

DTC Inspection Priority Chart

INFOID:0000000010051011

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

chart.

10

L/R

LAN signal

ON

—

11

L/W

Power supply for each door motor

ON

—

Battery voltage

15

O

Sunload sensor

ON

—

0 - 5V

16

R/G

Intake sensor

ON

—

0 - 5V

17

V/Y

Power supply from ACC

ACC

—

Battery voltage

19

B

Ground

ON

—

0V

20

G

Power supply from IGN

ON

—

Battery voltage

27

—

—

—

—

Circuits not use for this model

32

L/Y

Blower motor control signal

ON

Fan 
speed:1st 
speed
(manual)

35

O/B

Ambient sensor

ON

—

0 - 5V

36

LG

In-vehicle sensor

ON

—

0 - 5V

37

B/Y

Sensor ground

—

—

 0V

39

B

Ground

—

—

 0V

40

Y/R

Power supply from BATT

—

—

Battery voltage

Terminal 

No.

Wire col-

or

Item

Ignition 

switch

Condition

Value

(Approx.)

SJIA1453J

JSIIA0096ZZ

Compressor

: ON

Air outlet

: AUTO

Air inlet

: FRE (Fresh)

Blower fan speed

: AUTO

Set temperature

: Setting before communication error occurs

Display

: OFF

A/C AUTO AMP.

HAC-65

< ECU DIAGNOSIS INFORMATION >

[WITH COLOR DISPLAY]

C

D

E

F

G

H

J

K

L

M

A

B

HAC

N

O

P

DTC Index

INFOID:0000000010051012

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)
• B2632: DR AIRMIX ACTR (SHORT)
• B2633: DR AIRMIX ACTR (OPEN)
• B2634: PASS AIRMIX ACTR (SHORT)
• B2635: PASS AIRMIX ACTR (OPEN)
• B2636: DR VENT DOOR FAIL
• B2637: DR B/L DOOR FAIL
• B2638: DR D/F1 DOOR FAIL 
• B2639: DR DEF DOOR FAIL
• B263D: FRE DOOR FAIL
• B263E: 20P FRE DOOR FAIL
• B263F: REC DOOR FAIL
• B2654: D/F2 DOOR FAIL
• B2655: B/L2 DOOR FAIL

DTC

Items

(CONSULT screen terms)

Reference

U1000

CAN COMM CIRCUIT

HAC-30, "DTC Logic"

U1010

CONTROL UNIT (CAN)

HAC-31, "DTC Logic"

B257B

AMB TEMP SEN (SHORT)

HAC-32, "DTC Logic"

B257C

AMB TEMP SEN (OPEN)

HAC-32, "DTC Logic"

B2578

IN CAR SENSOR (OUT OF RANGE [LOW])

HAC-35, "DTC Logic"

B2579

IN CAR SENSOR (OUT OF RANGE [HI])

HAC-35, "DTC Logic"

B2581

EVAP TEMP SEN (SHORT)

HAC-38, "DTC Logic"

B2582

EVAP TEMP SEN (OPEN)

HAC-38, "DTC Logic"

B2630

*

SUNLOAD SEN (SHORT)

HAC-41, "DTC Logic"

B2631

*

SUNLOAD SEN (OPEN)

HAC-41, "DTC Logic"

B2632

DR AIRMIX ACTR (SHORT)

HAC-44, "DTC Logic"

B2633

DR AIRMIX ACTR (OPEN)

HAC-44, "DTC Logic"

B2634

PASS AIRMIX ACTR (SHORT)

HAC-46, "DTC Logic"

B2635

PASS AIRMIX ACTR (OPEN)

HAC-46, "DTC Logic"

B2636

DR VENT DOOR FAIL

HAC-48, "DTC Logic"

B2637

DR B/L DOOR FAIL

HAC-48, "DTC Logic"

B2638

DR D/F1 DOOR FAIL

HAC-48, "DTC Logic"

B2639

DR DEF DOOR FAIL

HAC-48, "DTC Logic"

B263D

FRE DOOR FAIL

HAC-51, "DTC Logic"

B263E

20P FRE DOOR FAIL

HAC-51, "DTC Logic"

B263F

REC DOOR FAIL

HAC-51, "DTC Logic"

B2654

D/F2 DOOR FAIL

HAC-48, "DTC Logic"

B2655

B/L2 DOOR FAIL

HAC-48, "DTC Logic"

HAC-66

< ECU DIAGNOSIS INFORMATION >

[WITH COLOR DISPLAY]

A/C AUTO AMP.

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

AIR CONDITIONER CONTROL

HAC-67

< WIRING DIAGRAM >

[WITH COLOR DISPLAY]

C

D

E

F

G

H

J

K

L

M

A

B

HAC

N

O

P

WIRING DIAGRAM

AIR CONDITIONER CONTROL

Wiring Diagram - With Color Display

INFOID:0000000010051013

ABIWA0341GB