Nissan Pathfinder. Manual - part 695

 

  Index      Nissan     Nissan Pathfinder (2014 year) - Service and Repair Manual

 

Search            

 

 

 

 

 

 

 

 

 

Content   ..  693  694  695  696   ..

 

 

Nissan Pathfinder. Manual - part 695

 

 

DIAGNOSIS SYSTEM (HVAC)

HAC-41

< SYSTEM DESCRIPTION >

[AUTOMATIC AIR CONDITIONING]

C

D

E

F

G

H

J

K

L

M

A

B

HAC

N

O

P

WORK SUPPORT

NOTE:

When the battery cable is disconnected from the negative terminal or when the battery voltage becomes 10 V

or less, the setting of WORK SUPPORT may be cancelled. 

RRFAN REQ SIG

[On/Off]

Displays rear blower motor ON/OFF status transmitted to other units via CAN communi-
cation.

RR FAN DUTY

Duty ratio of rear blower motor judged by A/C auto amp.

ENG COOL TEMP

[

°C (°F)] Engine coolant temperature signal value received from ECM via CAN communication.

VEHICLE SPEED

[km/h

(mph)]

Vehicle speed signal value received from combination meter via CAN communication.

TRI ZONE XM

Target discharge tri zone air temperature judged by A/C auto amp. depending on the 
temperature setting and the value from each sensor.

BOOSTR FAN RQST SIGNAL

[On/Off]

Displays rear blower motor ON/OFF status transmitted to other units via CAN communi-
cation.

BOOSTER FAN DUTY

Duty ratio of rear blower motor judged by A/C auto amp.

Monitor item [Unit]

Description

Work item

Description

Refer to

REAR TEMP SET CORRECT

Setting change of temperature setting trimmer (rear) can be per-
formed. 

HAC-78, "FRONT AUTO-
MATIC AIR CONDITION-
ING SYSTEM : 
Temperature Setting Trim-
mer (Front)"

TEMP SET CORRECT

Setting change of temperature setting trimmer (front) can be per-
formed. 

HAC-78, "FRONT AUTO-
MATIC AIR CONDITION-
ING SYSTEM : 
Temperature Setting Trim-
mer (Front)"

REC MEMORY SET

Setting change of inlet port memory function (REC) can be per-
formed. 

HAC-79, "FRONT AUTO-
MATIC AIR CONDITION-
ING SYSTEM : Inlet Port 
Memory Function (REC)"

FRE MEMORY SET

Setting change of inlet port memory function (FRE) can be per-
formed. 

HAC-79, "FRONT AUTO-
MATIC AIR CONDITION-
ING SYSTEM : Inlet Port 
Memory Function (FRE)"

BLOW SET

Setting change of foot position setting trimmer can be performed. 

HAC-78, "FRONT AUTO-
MATIC AIR CONDITION-
ING SYSTEM : Foot 
Position Setting Trimmer"

HAC-42

< ECU DIAGNOSIS INFORMATION >

[AUTOMATIC AIR CONDITIONING]

A/C AUTO AMP.

ECU DIAGNOSIS INFORMATION

A/C AUTO AMP.

Reference Value

INFOID:0000000009176802

VALUES ON THE DIAGNOSIS TOOL

Monitor item

Condition

Value/Status

AMB TEMP SEN

Ignition switch ON

Equivalent to ambient tem-
perature

IN-VEH TEMP

Ignition switch ON

Equivalent to in-vehicle tem-
perature (front side)

INT TEMP SEN

Ignition switch ON

Equivalent to front evapora-
tor fin temperature

SUNLOAD SEN

Ignition switch ON

Equivalent to sunload (driver 
side)

AMB SEN CAL

Ignition switch ON

Equivalent to ambient tem-
perature

IN-VEH CAL

Ignition switch ON

Equivalent to in-vehicle tem-
perature (front side)

INT TEMP CAL

Ignition switch ON

Equivalent to front evapora-
tor fin temperature

SUNL SEN CAL

Ignition switch ON

Equivalent to sunload (driver 
side)

COMP REQ SIG

Engine: Run at idle after 
warming up 

A/C switch: ON
(Compressor operation sta-
tus) 

On

A/C switch: OFF

Off

FAN REQ SIG

Engine: Run at idle after 
warming up 

Front blower motor: ON

On

Front blower motor: OFF

Off

FAN DUTY

Engine: Run at idle after 
warming up 

Front blower motor: ON

25 – 81

Front blower motor: OFF

0

XM

Ignition switch ON

Value according to target air 
flow temperature (driver 
side)

RR XM

Ignition switch ON

Value according to target air 
flow temperature (rear side)

PA TARGET A/TEMP

Ignition switch ON

Value according to target air 
flow temperature (passen-
ger side)

RRFAN REQ SIG

Engine: Run at idle after 
warming up 

Rear blower motor: ON

On

Rear blower motor: OFF

Off

RR FAN DUTY

Engine: Run at idle after 
warming up 

Rear blower motor: ON

25 – 81

Rear blower motor: OFF

0

ENG COOL TEMP

Ignition switch ON

Equivalent to engine coolant 
temperature

VEHICLE SPEED

Driving

Equivalent to speedometer 
reading

TRI ZONE XM

Ignition switch ON

Value according to target air 
flow temperature (rear side)

BOOSTR FAN RQST SIGNAL

Engine: Run at idle after 
warming up 

Rear blower motor: ON

On

Rear blower motor: OFF

Off

A/C AUTO AMP.

HAC-43

< ECU DIAGNOSIS INFORMATION >

[AUTOMATIC AIR CONDITIONING]

C

D

E

F

G

H

J

K

L

M

A

B

HAC

N

O

P

TERMINAL LAYOUT

PHYSICAL VALUES

BOOSTER FAN DUTY

Engine: Run at idle after 
warming up 

Rear blower motor: ON

25 – 81

Rear blower motor: OFF

0

Monitor item

Condition

Value/Status

ALIIA0579ZZ

Terminal No.

(Wire color)

Description

Condition

Value

(Approx.)

+

Signal name

Input/

Output

1

(L)

CAN-H

Input/

Output

2

(GR)

Ground

3

(G)

Ground

Battery power supply

Input

Ignition switch OFF

Battery voltage

4

(W)

Ground

Communication signal
(A/C auto amp.

→A/C switch 

assembly)

Output

Ignition switch ON

5

(G)

Ground

Communication signal
(A/C auto amp.

→Rear air 

control)

Output

Ignition switch ON

7

(G)

Ground

Ambient sensor signal

Input

Ignition switch ON

0 – 4.8 V

Output voltage varies with ambient 

temperature

8

*1

(G)

Ground

Heated steering wheel 
switch signal

Input

Ignition 
switch 
ON

Heated steer-
ing wheel 
switch: While 
pressing

0 V

Other than the 
above 

Battery voltage

9

(W)

Ground

Sunload sensor signal

Input

Ignition switch ON

0 – 4.8 V

Output voltage varies with sunload 

amount

SJIA1521J

SJIA1521J

HAC-44

< ECU DIAGNOSIS INFORMATION >

[AUTOMATIC AIR CONDITIONING]

A/C AUTO AMP.

12

(G)

Ground

Fan control amp. control sig-
nal

Output

• Ignition switch ON
• Blower speed: OFF

0 V

• Ignition switch ON
• Blower speed: 1st - 23rd

2.5 - 3.5 V

• Ignition switch ON
• Blower speed: 24th - 

25th

10 V

13

(W)

Ground

IGN 2

Input

Ignition switch ON

Battery voltage

14

(W)

Ground

Fan control amp. control sig-
nal

Output

• Ignition switch ON
• Blower speed: OFF

0 V

• Ignition switch ON
• Blower speed: 1st - 23rd

2.5 - 3.5 V

• Ignition switch ON
• Blower speed: 24th - 

25th

10 V

15

(R)

Ground

Rear window defogger 
switch

Output

Ignition 
switch 
ON

ON

0 V

OFF

5 V

16

(Y)

Ground

Each door motor LIN signal

Input/

Output

Ignition switch ON

17

(LG)

Ground

Each door motor power sup-
ply

Output

Ignition switch ON

Battery voltage

18

(W)

Ground

Front blower motor control 
signal

Output

• Ignition switch ON
• Front fan speed: 1st 

speed (manual)

19

(W)

Ground

PTC1 relay output signal

Input

Ignition 
switch 
ON

PTC heater: 
ON

0 V

PTC heater: 
OFF

Battery voltage

20

*1

(BR)

Ground

Heated steering wheel relay 
control signal

Output

Ignition 
switch 
ON

Within 30 sec-
onds after 
turning ON the 
heated steer-
ing switch.

0 V

Other than the 
above 

Battery voltage

21

(P)

CAN-L

Input/

Output

22

(GR)

Ground

Terminal No.

(Wire color)

Description

Condition

Value

(Approx.)

+

Signal name

Input/

Output

SJIA1453J

JSIIA0096ZZ

 

 

 

 

 

 

 

Content   ..  693  694  695  696   ..