Nissan Pathfinder (2009 year). Manual - part 167

BCM (BODY CONTROL MODULE)

DLK-145

< ECU DIAGNOSIS >

[WITH INTELLIGENT KEY SYSTEM]

C

D

E

F

G

H

I

J

L

M

A

B

DLK

N

O

P

DTC Inspection Priority Chart

INFOID:0000000004422022

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

DTC Index

INFOID:0000000004422023

NOTE:

Details of time display

• CRNT: Displays when there is a malfunction now or after returning to the normal condition until turning igni-

tion switch OFF 

→

 ON again.

• 1 - 39: Displayed if any previous malfunction is present when current condition is normal. It increases like 1

→

 2 

→

 3...38 

→

 39 after returning to the normal condition whenever ignition switch OFF 

→

 ON. The counter

remains at 39 even if the number of cycles exceeds it. It is counted from 1 again when turning ignition switch
OFF 

→

 ON after returning to the normal condition if the malfunction is detected again.

Display contents of CONSULT

Fail-safe

Cancellation

U1000: CAN COMM CIRCUIT

Inhibit engine cranking

When the BCM re-establishes communication with the other mod-
ules.

U1010: CONTROL UNIT (CAN)

Inhibit engine cranking

When the BCM re-start communicating with the other modules.

Priority

DTC

1

• U1000: CAN COMM CIRCUIT
• U1010: CONTROL UNIT (CAN)

2

• B2190: NATS ANTENNA AMP
• B2191: DIFFERENCE OF KEY
• B2192: ID DISCORD BCM-ECM
• B2193: CHAIN OF BCM-ECM
• B2013: STRG COMM 1
• B2552: INTELLIGENT KEY
• B2590: NATS MALFUNCTION

3

• C1729: VHCL SPEED SIG ERR
• C1735: IGNITION SIGNAL

4

• C1704: LOW PRESSURE FL
• C1705: LOW PRESSURE FR
• C1706: LOW PRESSURE RR
• C1707: LOW PRESSURE RL
• C1708: [NO DATA] FL
• C1709: [NO DATA] FR
• C1710: [NO DATA] RR
• C1711: [NO DATA] RL
• C1712: [CHECKSUM ERR] FL
• C1713: [CHECKSUM ERR] FR
• C1714: [CHECKSUM ERR] RR
• C1715: [CHECKSUM ERR] RL
• C1716: [PRESSDATA ERR] FL
• C1717: [PRESSDATA ERR] FR
• C1718: [PRESSDATA ERR] RR
• C1719: [PRESSDATA ERR] RL
• C1720: [CODE ERR] FL
• C1721: [CODE ERR] FR
• C1722: [CODE ERR] RR
• C1723: [CODE ERR] RL
• C1724: [BATT VOLT LOW] FL
• C1725: [BATT VOLT LOW] FR
• C1726: [BATT VOLT LOW] RR
• C1727: [BATT VOLT LOW] RL

2009 Pathfinder

DLK-146

< ECU DIAGNOSIS >

[WITH INTELLIGENT KEY SYSTEM]

BCM (BODY CONTROL MODULE)

CONSULT display

Fail-safe

Intelligent Key 

warning lamp ON

Tire pressure 

monitor warning 

lamp ON

Reference page

No DTC is detected.
further testing
may be required.

—

—

—

—

U1000: CAN COMM CIRCUIT

—

—

—

BCS-33

U1010: CONTROL UNIT (CAN)

—

—

—

BCS-34

B2013: STRG COMM 1

—

—

—

SEC-27

B2190: NATS ANTTENA AMP

—

—

—

SEC-30

 (with I-

Key), 

SEC-136

 

(without I-Key)

B2191: DIFFERENCE OF KEY

—

—

—

SEC-33

 (with I-

Key), 

SEC-139

 

(without I-Key)

B2192: ID DISCORD BCM-ECM

—

—

—

SEC-34

 (with I-

Key), 

SEC-140

 

(without I-Key)

B2193: CHAIN OF BCM-ECM

—

—

—

SEC-36

 (with I-

Key), 

SEC-142

 

(without I-Key)

B2552: INTELLIGENT KEY

—

—

—

SEC-38

B2590: NATS MALFUNCTION

—

—

—

SEC-39

C1708: [NO DATA] FL

—

—

—

WT-14

C1709: [NO DATA] FR

—

—

—

WT-14

C1710: [NO DATA] RR

—

—

—

WT-14

C1711: [NO DATA] RL

—

—

—

WT-14

C1712: [CHECKSUM ERR] FL

—

—

—

WT-16

C1713: [CHECKSUM ERR] FR

—

—

—

WT-16

C1714: [CHECKSUM ERR] RR

—

—

—

WT-16

C1715: [CHECKSUM ERR] RL

—

—

—

WT-16

C1716: [PRESSDATA ERR] FL

—

—

—

WT-18

C1717: [PRESSDATA ERR] FR

—

—

—

WT-18

C1718: [PRESSDATA ERR] RR

—

—

—

WT-18

C1719: [PRESSDATA ERR] RL

—

—

—

WT-18

C1720: [CODE ERR] FL

—

—

—

WT-16

C1721: [CODE ERR] FR

—

—

—

WT-16

C1722: [CODE ERR] RR

—

—

—

WT-16

C1723: [CODE ERR] RL

—

—

—

WT-16

C1724: [BATT VOLT LOW] FL

—

—

—

WT-16

C1725: [BATT VOLT LOW] FR

—

—

—

WT-16

C1726: [BATT VOLT LOW] RR

—

—

—

WT-16

C1727: [BATT VOLT LOW] RL

—

—

—

WT-16

C1729: VHCL SPEED SIG ERR

—

—

—

WT-19

C1735: IGNITION SWITCH

—

—

—

—

2009 Pathfinder

INTELLIGENT KEY UNIT

DLK-147

< ECU DIAGNOSIS >

[WITH INTELLIGENT KEY SYSTEM]

C

D

E

F

G

H

I

J

L

M

A

B

DLK

N

O

P

INTELLIGENT KEY UNIT

Reference Value - Intelligent Key Unit

INFOID:0000000003938255

TERMINAL LAYOUT

PHYSICAL VALUES

WIIA1168E

Terminal

Wire 

Color

Item

Condition

Voltage (V)

Approx.

Ignition 

Switch Po-

sition

Operation or Conditions

1

O

Steering lock sole-
noid power supply

LOCK

—

5

2

L

CAN-H

—

—

—

3

P

CAN-L

—

—

—

4

GR

Intelligent Key warn-
ing buzzer (front of 
vehicle)

LOCK

Operate door request 

switch.

Buzzer OFF

Battery voltage

Buzzer ON

0

5

LG

Front door request 
switch LH

—

Press front door request switch LH.

0

Other than above

Battery voltage

6

W/G

Ignition switch (ON)

ON

—

Battery voltage

7

SB

Key switch

LOCK

Insert mechanical key into ignition key 
cylinder.

Battery voltage

Remove mechanical key from ignition 
key cylinder.

0

8

O

Remote keyless en-
try receiver ground

—

—

0

9

R

Remote keyless en-
try receiver signal

—

When remote keyless entry receiver re-
ceives signal from keyfob.

Stand-by

11

R/B

Power source (Fuse)

—

—

Battery voltage

12

B

Ground

—

—

0

OCC3879D

2009 Pathfinder

DLK-148

< ECU DIAGNOSIS >

[WITH INTELLIGENT KEY SYSTEM]

INTELLIGENT KEY UNIT

13

W

Inside key antenna 3 
(3rd row seat) (+) sig-
nal

LOCK

Press ignition knob switch: ON (Ignition 
knob switch)

14

BR

Inside key antenna 3 
(3rd row seat) (-) sig-
nal

15

V

Inside key antenna 1 
(instrument panel) 
(+) signal

LOCK

Any door open 

→

 all doors closed

16

LG

Inside key antenna 1 
(instrument panel) (-) 
signal

17

R

Rear bumper anten-
na (+) signal

LOCK

Press back door request switch.

18

L

Rear bumper anten-
na (-) signal

19

Y

Front outside anten-
na LH (+) signal

LOCK

Press front door request switch LH.

20

W

Front outside anten-
na LH (-) signal

21

BR

Remote keyless en-
try receiver RSSI sig-
nal

—

—

23

SB

Back door control 
unit signal

—

Back door release switch ON.

0

Back door release switch OFF.

Battery voltage

24

W

Back door opener 
switch input

—

Back door opener switch ON.

0

Back door opener switch OFF.

5

25

R

Front door request 
switch RH

—

Press front door request switch RH.

0

Other than above

Battery voltage

27

G

Ignition knob switch

—

Press ignition switch.

Battery voltage

Return ignition switch to LOCK position.

0

28

P

Unlock sensor
(driver side)

—

Door (driver side) is locked.

5

Door (driver side) is unlocked.

0

Terminal

Wire 

Color

Item

Condition

Voltage (V)

Approx.

Ignition 

Switch Po-

sition

Operation or Conditions

PIIB7441E

PIIB7441E

SIIA1910J

SIIA1910J

PIIA2344E

2009 Pathfinder

INTELLIGENT KEY UNIT

DLK-149

< ECU DIAGNOSIS >

[WITH INTELLIGENT KEY SYSTEM]

C

D

E

F

G

H

I

J

L

M

A

B

DLK

N

O

P

Reference Value - Steering Lock Solenoid

INFOID:0000000003938256

TERMINAL LAYOUT

PHYSICAL VALUES

29

GR

Back door request 
switch

—

Back door request switch ON.

0

Back door request switch OFF.

5

30

W

Remote keyless en-
try receiver power 
supply

—

—

5

32

V

Steering lock sole-
noid communication 
signal

LOCK

When Intelligent Key is inside vehicle, 
press ignition knob switch.

Other than above

5

33

G

Inside key antenna 2 
(center console) (+) 
signal

LOCK

Any door open 

→

 all doors closed

34

R

Inside key antenna 2 
(center console) (-) 
signal

37

P

Front outside anten-
na (+) signal RH

LOCK

Press front door request switch RH.

38

V

Front outside anten-
na (-) signal RH

39

SB

P range switch

—

Selector lever is in “P” position.

0

Other than above

Battery voltage

40

R

AS select unlock out-
put

—

UNLOCK with rear door locks disabled.

0

Other than above

Battery voltage

Terminal

Wire 

Color

Item

Condition

Voltage (V)

Approx.

Ignition 

Switch Po-

sition

Operation or Conditions

SIIA1911J

PIIB7441E

SIIA1910J

WIIA1169E

2009 Pathfinder

DLK-150

< ECU DIAGNOSIS >

[WITH INTELLIGENT KEY SYSTEM]

INTELLIGENT KEY UNIT

Terminal

Wire 

Color

Signal Designation

Condition

Voltage (V)

Approx.

Ignition 

Switch Posi-

tion

Operation or Conditions

1

R/B

Power source (fuse)

LOCK

—

Battery voltage

2

O

Steering lock solenoid 
power supply

LOCK

—

5

3

V

Steering lock solenoid 
communication signal

LOCK

When Intelligent Key is inside ve-
hicle, press ignition knob switch.

Other than the above

5

4

SB

Steering lock solenoid 
ground

—

—

0

SIIA1911J

2009 Pathfinder

INTELLIGENT KEY UNIT

DLK-151

< ECU DIAGNOSIS >

[WITH INTELLIGENT KEY SYSTEM]

C

D

E

F

G

H

I

J

L

M

A

B

DLK

N

O

P

Wiring Diagram — INTELLIGENT KEY SYSTEM —

INFOID:0000000003938257

ABKWA0114GB

2009 Pathfinder

DLK-152

< ECU DIAGNOSIS >

[WITH INTELLIGENT KEY SYSTEM]

INTELLIGENT KEY UNIT

ABKWA0115GB

2009 Pathfinder