Nissan Pathfinder (2012 year). Manual - part 453

LAN-52

< SYSTEM DESCRIPTION >

[CAN]

CAN COMMUNICATION SYSTEM

SYSTEM DESCRIPTION

CAN COMMUNICATION SYSTEM

CAN System Specification Chart

INFOID:0000000007354987

Determine CAN system type from the following specification chart. Then choose the correct diagnosis sheet.

NOTE:

Refer to 

LAN-14, "Trouble Diagnosis Procedure"

 for how to use CAN system specification chart.

×

: Applicable

VEHICLE EQUIPMENT IDENTIFICATION INFORMATION

NOTE:

Body type

Wagon

Axle

2WD

4WD

(Part time)

4WD (All-mode)

Engine

VQ40DE

VK56

DE

Transmission

A/T

Brake control

VDC

Color display

×

×

×

×

×

×

×

×

×

Intelligent Key system

×

×

×

×

×

×

Automatic drive positioner

×

×

×

Automatic air conditioner

×

×

×

×

×

×

×

×

×

CAN  system  type

1

2

3

4

5

6

7

8

9

10

11

12

Diagnosis sheet

LAN-

40

LAN-

41

LAN-

42

LAN-

43

LAN-

44

LAN-

45

LAN-

46

LAN-

47

LAN-

48

LAN-

49

LAN-

50

LAN-

51

August 2012

2012 Pathfinder

LAN

CAN COMMUNICATION SYSTEM

LAN-53

< SYSTEM DESCRIPTION >

[CAN]

C

D

E

F

G

H

I

J

K

L

B

A

O

P

N

Check CAN system type from the vehicle shape and equipment.

CAN Communication Signal Chart

INFOID:0000000007354988

Refer to 

LAN-13, "How to Use CAN Communication Signal Chart"

 for how to use CAN communication signal

chart.

NOTE:

Refer to 

LAN-36, "Abbreviation List"

 for the abbreviations of the connecting units. 

T: Transmit R: Receive

ALMIA0184GB

Signal name/Connecting unit

ECM

TCM

AV

I-KEY

4W

D

*1

4W

D

*2

ADP

BCM

HV

AC

*3

M&A

STRG

ABS

IPDM

-E

A/C compressor request signal

T

R

Accelerator pedal position signal 

T

R

R

R

ASCD CRUISE lamp signal

T

R

ASCD OD cancel request signal

T

R

ASCD operation signal

T

R

ASCD SET lamp signal

T

R

August 2012

2012 Pathfinder

LAN-54

< SYSTEM DESCRIPTION >

[CAN]

CAN COMMUNICATION SYSTEM

Battery voltage signal

T

R

Closed throttle position signal

T

R

Cooling fan speed request signal

T

R

Engine coolant temperature signal

T

R

R

Engine  speed  signal

T

R

R

R

R

R

R

R

R

Engine status signal

T

R

Fuel consumption monitor signal

T

R

R

T

Fuel filler cap warning display signal

T

R

Malfunction indicator lamp signal

T

R

Power generation command value signal

T

R

Wide open throttle position signal

T

R

A/T fluid temperature sensor signal

T

R

A/T position indicator lamp signal

T

R

R

R

R

R

A/T self-diagnosis signal

R

T

Input speed signal

R

T

O/D OFF indicator signal

T

R

Output shaft revolution signal

R

T

R

R

P range signal

T

R

R

R

System setting signal

T

R

R

R

R

T

T

T

A/C switch/indicator signal

T

R

R

T

Buzzer output signal

T

R

T

R

Door lock/unlock request signal

T

R

Hazard request signal

T

R

Hazard warning lamp request signal

T

R

Ignition knob switch signal

T

R

Key fob ID signal

T

R

R

R

T

KEY warning signal

T

R

LOCK warning signal

T

R

Panic alarm request signal

T

R

Power window open request signal

T

R

A/C switch signal

R

T

R

Blower fan motor switch signal

R

T

Day time running light request signal

T

R

R

Door lock/unlock status signal

R

T

Door switch signal

R

R

R

T

R

R

Front fog light request signal

T

R

R

Front wiper request signal

T

R

High beam request signal

T

R

R

Signal name/Connecting unit

ECM

TCM

AV

I-KEY

4W

D

*1

4W

D

*2

ADP

BCM

HV

A

C

*3

M&A

STRG

ABS

IPDM

-E

August 2012

2012 Pathfinder

LAN

CAN COMMUNICATION SYSTEM

LAN-55

< SYSTEM DESCRIPTION >

[CAN]

C

D

E

F

G

H

I

J

K

L

B

A

O

P

N

• *1: Part time 4WD models
• *2: All-mode 4WD models
• *3: Models with automatic air conditioner
• *4: Models without manual mode
• *5: Models with manual mode

NOTE:

CAN data of the air bag diagnosis sensor unit is not used by usual service work, thus it is omitted. 

Horn chirp signal

T

R

Ignition switch signal

R

R

T

R

Key fob door unlock signal

R

T

Key switch signal

R

T

Low beam request signal

T

R

Position light request signal

T

R

R

Rear window defogger switch signal

T

R

Sleep wake up signal

R

T

R

R

Theft warning horn request signal

T

R

Tire pressure data signal

R

T

Tire pressure signal

R

T

R

Turn indicator signal

T

R

1st position switch signal

*4

R

T

Distance to empty signal

R

T

Fuel filler cap warning reset signal

R

T

Fuel level low warning signal

R

T

Fuel level sensor signal

R

T

Manual mode shift down signal

*5

R

T

Manual mode shift up signal

*5

R

T

Manual mode signal

*5

R

T

Non-manual mode signal

*5

R

T

Overdrive control switch signal

*4

R

T

Seat belt buckle switch signal

R

T

Stop lamp switch signal

R

R

R

T

R

T

Vehicle speed signal

R

R

R

R

R

R

R

T

R

R

R

R

R

T

Steering angle sensor signal

T

R

ABS warning lamp signal

R

T

Brake warning lamp signal

R

T

SLIP indicator lamp signal

R

T

VDC OFF indicator lamp signal

R

T

Front wiper stop position signal

R

T

High beam status signal

R

T

Low beam status signal

R

T

Rear window defogger control signal

R

R

T

Signal name/Connecting unit

ECM

TCM

AV

I-KEY

4W

D

*1

4W

D

*2

ADP

BCM

HV

A

C

*3

M&A

STRG

ABS

IPDM

-E

August 2012

2012 Pathfinder

LAN-56

< SYSTEM DESCRIPTION >

[CAN]

TROUBLE DIAGNOSIS

TROUBLE DIAGNOSIS

CAN Diagnostic Support Monitor

INFOID:0000000007354989

Use “CAN DIAG SUPPORT MNTR” for detecting the root cause.

MONITOR ITEM LIST (CONSULT)

ECM

0: Error at present, 1 – 39: Error in the past (Number means the number of times the ignition switch is turned OFF

→

ON)

*: 39 or higher number is fixed at 39 until the self-diagnosis result is erased.

TCM

NOTE:

Replace the unit when “NG” is indicated on the “INITIAL DIAG”.

Air Bag Diagnosis Sensor Unit

ITEM

CAN DIAG SUP-

PORT MNTR

Description

Normal

Error

PRESENT

PAST

PRESENT

PAST

ECM

TRANSMIT DIAG

Signal transmission status

OK

OK

or

1 – 39

*

UNKWN

0

VDC/TCS/ABS

Signal receiving status from the ABS ac-
tuator and electric unit (control unit)

METER/M&A

Signal receiving status from the combina-
tion meter

BCM/SEC

Signal receiving status from the BCM

ICC/ADAS

Not used even though indicated

HVAC

TCM

Signal receiving status from the TCM

OK

OK

or

1 – 39

*

UNKWN

0

MULTI AV

Not used even though indicated

EPS

IPDM E/R

Signal receiving status from the IPDM E/
R

OK

OK

or

1 – 39

*

UNKWN

0

e4WD

Not used even though indicated

AWD/4WD

Signal receiving status from the transfer 
control unit

OK

OK

or

1 – 39

*

UNKWN

0

ITEM

CAN DIAG SUP-

PORT MNTR

Description

Normal

Error

PRESENT

TCM

INITIAL DIAG

Status of CAN controller

OK

NG

TRANSMIT DIAG

Signal transmission status

UNKWN

ECM

Signal receiving status from the ECM

VDC/TCS/ABS

Signal receiving status from the ABS actuator and electric unit (con-
trol unit)

METER/M&A

Signal receiving status from the combination meter

ICC/e4WD

Not used even though indicated

AWD/4WD

Signal receiving status from the transfer control unit

OK

UNKWN

August 2012

2012 Pathfinder

LAN

TROUBLE DIAGNOSIS

LAN-57

< SYSTEM DESCRIPTION >

[CAN]

C

D

E

F

G

H

I

J

K

L

B

A

O

P

N

0: Error at present, 1 – 39: Error in the past (Number means the number of times the ignition switch is turned OFF

→

ON)

*: 39 or higher number is fixed at 39 until the self-diagnosis result is erased.

AV Control Unit

0: Error at present, 1 – 39: Error in the past (Number means the number of times the ignition switch is turned OFF

→

ON)

*: 39 or higher number is fixed at 39 until the self-diagnosis result is erased.

Intelligent Key Unit

0: Error at present, 1 – 39: Error in the past (Number means the number of times the ignition switch is turned OFF

→

ON)

*: 39 or higher number is fixed at 39 until the self-diagnosis result is erased.

Transfer Control Unit (All-mode 4WD)

ITEM

CAN DIAG SUP-

PORT MNTR

Description

Normal

Error

PRESENT

PAST

PRESENT

PAST

A-BAG

TRANSMIT DIAG

Not used even though indicated

ECM

Signal receiving status from the ECM

OK

OK

or

1 – 39

*

UNKWN

0

VDC/TCS/ABS

Signal receiving status from the ABS actua-
tor and electric unit (control unit)

METER/M&A

Signal receiving status from the combina-
tion meter

BCM/SEC

Not used even though indicated

TCM

STRG

Signal receiving status from the steering an-
gle sensor

OK

OK

or

1 – 39

*

UNKWN

0

ITEM

CAN DIAG SUP-

PORT MNTR

Description

Normal

Error

PRESENT

PAST

PRESENT

PAST

AV

TRANSMIT DIAG

Signal transmission status

OK

OK

or

1 – 39

*

UNKWN

0

ECM

Signal receiving status from the ECM

METER/M&A

Signal receiving status from the combi-
nation meter

BCM/SEC

Signal receiving status from the BCM

HVAC

Signal receiving status from the A/C auto 
amp.

STRG

Not used even though indicated

IPDM E/R

Signal receiving status from the IPDM E/
R

OK

OK

or

1 – 39

*

UNKWN

0

TIRE-P

Not used even though indicated

ITEM

CAN DIAG SUP-

PORT MNTR

Description

Normal

Error

PRESENT

PAST

PRESENT

PAST

I-KEY

TRANSMIT DIAG

Signal transmission status

OK

OK

or

1 – 39

*

UNKWN

0

ECM

Signal receiving status from the ECM

METER/M&A

Signal receiving status from the combi-
nation meter

BCM/SEC

Signal receiving status from the BCM

August 2012

2012 Pathfinder

LAN-58

< SYSTEM DESCRIPTION >

[CAN]

TROUBLE DIAGNOSIS

0: Error at present, 1 – 39: Error in the past (Number means the number of times the ignition switch is turned OFF

→

ON)

*: 39 or higher number is fixed at 39 until the self-diagnosis result is erased.

Transfer Control Unit (Part Time 4WD)

NOTE:

Replace the unit when “NG” is indicated on the “INITIAL DIAG”.

Driver Seat Control Unit

0: Error at present, 1 – 39: Error in the past (Number means the number of times the ignition switch is turned OFF

→

ON)

*: 39 or higher number is fixed at 39 until the self-diagnosis result is erased.

BCM

NOTE:

Replace the unit when “NG” is indicated on the “INITIAL DIAG”.

A/C Auto Amp.

ITEM

CAN DIAG SUP-

PORT MNTR

Description

Normal

Error

PRESENT

PAST

PRESENT

PAST

4WD

TRANSMIT DIAG

Signal transmission status

OK

OK

or

1 – 39

*

UNKWN

0

ECM

Signal receiving status from the ECM

VDC/TCS/ABS

Signal receiving status from the ABS ac-
tuator and electric unit (control unit)

TCM

Signal receiving status from the TCM

STRG

Signal receiving status from the steering 
angle sensor

ITEM

CAN DIAG SUP-

PORT MNTR

Description

Normal

Error

PRESENT

4WD

INITIAL DIAG

Status of CAN controller

OK

NG

TRANSMIT DIAG

Signal transmission status

UNKWN

ECM

Signal receiving status from the ECM

VDC/TCS/ABS

Signal receiving status from the ABS actuator and electric unit (con-
trol unit)

TCM

Signal receiving status from the TCM

METER/M&A

Signal receiving status from the combination meter

ITEM

CAN DIAG SUP-

PORT MNTR

Description

Normal

Error

PRESENT

PAST

PRESENT

PAST

ADP

TRANSMIT DIAG

Not used even though indicated

METER/M&A

Signal receiving status from the combina-
tion meter

OK

OK

or

1 – 39

*

UNKWN

0

BCM/SEC

Signal receiving status from the BCM

TCM

Signal receiving status from the TCM

ITEM

CAN DIAG SUP-

PORT MNTR

Description

Normal

Error

PRESENT

BCM

INITIAL DIAG

Status of CAN controller

OK

NG

TRANSMIT DIAG

Signal transmission status

UNKWN

ECM

Signal receiving status from the ECM

IPDM E/R

Signal receiving status from the IPDM E/R

METER/M&A

Signal receiving status from the combination meter

I-KEY

Not used even though indicated

August 2012

2012 Pathfinder

LAN

TROUBLE DIAGNOSIS

LAN-59

< SYSTEM DESCRIPTION >

[CAN]

C

D

E

F

G

H

I

J

K

L

B

A

O

P

N

0: Error at present, 1 – 39: Error in the past (Number means the number of times the ignition switch is turned OFF

→

ON)

*: 39 or higher number is fixed at 39 until the self-diagnosis result is erased.

Combination Meter

0: Error at present, 1 – 39: Error in the past (Number means the number of times the ignition switch is turned OFF

→

ON)

*: 39 or higher number is fixed at 39 until the self-diagnosis result is erased.

ABS Actuator and Electric Unit (Control Unit)

ITEM

CAN DIAG SUP-

PORT MNTR

Description

Normal

Error

PRESENT

PAST

PRESENT

PAST

HVAC

TRANSMIT DIAG

Signal transmission status

OK

OK

or

1 – 39

*

UNKWN

0

ECM

Signal receiving status from the ECM

TCM

Not used even though indicated

BCM/SEC

Signal receiving status from the BCM

OK

OK

or

1 – 39

*

UNKWN

0

VDC/TCS/ABS

Signal receiving status from the ABS ac-
tuator and electric unit (control unit)

IPDM E/R

Not used even though indicated

DISPLAY

Signal receiving status from the AV con-
trol unit

OK

OK

or

1 – 39

*

UNKWN

0

I-KEY

Not used even though indicated

EPS

AWD/4WD

e4WD

ICC/ADAS

LANE CAMERA

TIRE-P

ITEM

CAN DIAG SUP-

PORT MNTR

Description

Normal

Error

PRESENT

PAST

PRESENT

PAST

M&A

TRANSMIT DIAG

Signal transmission status

OK

OK

or

1 – 39

*

UNKWN

0

ECM

Signal receiving status from the ECM

TCM

Signal receiving status from the TCM

BCM/SEC

Signal receiving status from the BCM

VDC/TCS/ABS

Signal receiving status from the ABS ac-
tuator and electric unit (control unit)

IPDM E/R

Signal receiving status from the IPDM E/
R

DISPLAY

Not used even though indicated

I-KEY

Signal receiving status from the Intelli-
gent Key unit

OK

OK

or

1 – 39

*

UNKWN

0

EPS

Not used even though indicated

AWD/4WD

e4WD

ICC/ADAS

LANE CAMERA

TIRE-P

August 2012

2012 Pathfinder