Nissan Pathfinder (2012 year). Instruction — 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:
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
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
LAN-13, "How to Use CAN Communication Signal Chart"
for how to use CAN communication signal
chart.
NOTE:
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 instruction mode
• *5: Models with instruction 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
Instruction mode shift down signal
*5
R
T
Instruction mode shift up signal
*5
R
T
Instruction mode signal
*5
R
T
Non-instruction 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
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