Nissan Maxima. Manual - part 748

 

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Nissan Maxima. Manual - part 748

 

 

HAC-168

< DTC/CIRCUIT DIAGNOSIS >

[WITH MONOCHROME DISPLAY]

POWER SUPPLY AND GROUND CIRCUIT

1. Disconnect the A/C display unit connector. 

2. Turn ignition switch ON.

3. Check voltage between A/C display unit harness connector

M101 terminal 6 and ground. 

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair the harnesses or connectors.

2.

CHECK GROUND CIRCUIT FOR A/C DISPLAY UNIT 

1. Turn ignition switch OFF.

2. Check continuity between A/C display unit harness connector

M101 terminal 1 and ground. 

Is the inspection result normal?

YES

>> Replace the A/C display unit. Refer to  

HAC-203,

"Removal and Installation"

.

NO

>> Repair the harnesses or connectors.

6 - Ground

: Battery voltage

AWIIA1181ZZ

1 - Ground

: Continuity should exist

AWIIA1182ZZ

A/C AUTO AMP.

HAC-169

< ECU DIAGNOSIS INFORMATION >

[WITH MONOCHROME DISPLAY]

C

D

E

F

G

H

J

K

L

M

A

B

HAC

N

O

P

ECU DIAGNOSIS INFORMATION

A/C AUTO AMP.

Reference Value

INFOID:0000000010051174

VALUES ON THE DIAGNOSIS TOOL

CONSULT MONITOR ITEM

A/C AUTO AMP. HARNESS CONNECTOR TERMINAL LAYOUT

TERMINALS AND REFERENCE VALUES FOR A/C AUTO AMP.

Monitor item

Condition

Value/Status

COMP REQ SIG

Engine: Run at idle after 
warming up 

A/C switch: ON
(A/C compressor operation 
status) 

On

A/C switch: OFF

Off

FAN REQ SIG

Engine: Run at idle after 
warming up 

Blower fan: ON

On

Blower fan: OFF

Off

AMB TEMP SEN

Ignition switch ON

22 - 131

°F (−30 - 55°C)

IN-VEH TEMP

Ignition switch ON

22 - 131

°F (−30 - 55°C)

INT TEMP SEN

Ignition switch ON

22 - 131

°F (−30 - 55°C)

SUNLOAD SEN

Ignition switch ON

0 - 1395 w/m

2

(0 - 1200 kcal/m

2

·h)

AMB SEN CAL

Ignition switch ON

22 -131

°F (−30 - 55°C)

IN-VEH CAL

Ignition switch ON

22 -131

°F (−30 - 55°C)

INT TEMP CAL

Ignition switch ON

22 -131

°F (−30 - 55°C)

SUNL SEN CAL

Ignition switch ON

0 - 1395 w/m

2

(0 - 1200 kcal/m

2

·h)

FAN DUTY

Engine: Run at idle after 
warming up 

Blower fan: ON

25 - 85%

Blower fan: OFF

0%

XM

Ignition switch ON

−100 - 155

ENG COOL TEMP

Ignition switch ON

Values according to coolant 
temperature

VEHICLE SPEED

Driving

Equivalent to speedometer 
reading

AWIIA1381ZZ

Terminal 

No.

Wire col-

or

Item

Ignition 

switch

Condition

Value

(Approx.)

1

L

CAN-H

ON

0 - 5V

2

P

CAN-L

ON

0 - 5V

6

L

TX (AMP > SW DISP)

ON

0 - 5V

HAC-170

< ECU DIAGNOSIS INFORMATION >

[WITH MONOCHROME DISPLAY]

A/C AUTO AMP.

DTC Inspection Priority Chart

INFOID:0000000010051175

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

chart.

7

P

RX (SW > AMP)

ON

0 - 5V

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

GR/W

Rear defrost ON signal

ON

Defroster
switch ON

0V

Defroster
switch OFF

Battery voltage

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

A/C AUTO AMP.

HAC-171

< ECU DIAGNOSIS INFORMATION >

[WITH MONOCHROME DISPLAY]

C

D

E

F

G

H

J

K

L

M

A

B

HAC

N

O

P

DTC Index

INFOID:0000000010051176

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-133, "DTC Logic"

U1010

CONTROL UNIT (CAN)

HAC-134, "DTC Logic"

B257B

AMB TEMP SEN (SHORT)

HAC-135, "DTC Logic"

B257C

AMB TEMP SEN (OPEN)

HAC-135, "DTC Logic"

B2578

IN CAR SENSOR (OUT OF RANGE [LOW])

HAC-138, "DTC Logic"

B2579

IN CAR SENSOR (OUT OF RANGE [HI])

HAC-138, "DTC Logic"

B2581

EVAP TEMP SEN (SHORT)

HAC-141, "DTC Logic"

B2582

EVAP TEMP SEN (OPEN)

HAC-141, "DTC Logic"

B2630

*

SUNLOAD SEN (SHORT)

HAC-144, "DTC Logic"

B2631

*

SUNLOAD SEN (OPEN)

HAC-144, "DTC Logic"

B2632

DR AIRMIX ACTR (SHORT)

HAC-147, "DTC Logic"

B2633

DR AIRMIX ACTR (OPEN)

HAC-147, "DTC Logic"

B2634

PASS AIRMIX ACTR (SHORT)

HAC-149, "DTC Logic"

B2635

PASS AIRMIX ACTR (OPEN)

HAC-149, "DTC Logic"

B2636

DR VENT DOOR FAIL

HAC-152, "DTC Logic"

B2637

DR B/L DOOR FAIL

HAC-152, "DTC Logic"

B2638

DR D/F1 DOOR FAIL

HAC-152, "DTC Logic"

B2639

DR DEF DOOR FAIL

HAC-152, "DTC Logic"

B263D

FRE DOOR FAIL

HAC-155, "DTC Logic"

B263E

20P FRE DOOR FAIL

HAC-155, "DTC Logic"

B263F

REC DOOR FAIL

HAC-155, "DTC Logic"

B2654

D/F2 DOOR FAIL

HAC-152, "DTC Logic"

B2655

B/L2 DOOR FAIL

HAC-152, "DTC Logic"

 

 

 

 

 

 

 

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