Nissan Pathfinder (2009 year). Manual - part 594

SEC-174

< ECU DIAGNOSIS >

[WITHOUT INTELLIGENT KEY SYSTEM]

BCM (BODY CONTROL MODULE)

Fail Safe

INFOID:0000000004432109

Fail-safe index

BCM performs fail-safe control when any DTC listed below is detected.

ABKIA0342GB

2009 Pathfinder

BCM (BODY CONTROL MODULE)

SEC-175

< ECU DIAGNOSIS >

[WITHOUT INTELLIGENT KEY SYSTEM]

C

D

E

F

G

H

I

J

L

M

A

B

SEC

N

O

P

DTC Inspection Priority Chart

INFOID:0000000004432110

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

DTC Index

INFOID:0000000004432111

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

SEC-176

< ECU DIAGNOSIS >

[WITHOUT 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

IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)

SEC-177

< ECU DIAGNOSIS >

[WITHOUT INTELLIGENT KEY SYSTEM]

C

D

E

F

G

H

I

J

L

M

A

B

SEC

N

O

P

IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE
ROOM)

Reference Value

INFOID:0000000004432112

VALUES ON THE DIAGNOSIS TOOL

Monitor Item

Condition

Value/Status

MOTOR FAN REQ

Engine idle speed

Changes depending on engine 
coolant temperature, air conditioner 
operation status, vehicle speed, 
etc.

0 - 100 %

A/C COMP REQ

A/C switch OFF

OFF

A/C switch ON

ON

TAIL&CLR REQ

Lighting switch OFF

OFF

Lighting switch 1ST, 2ND, HI or AUTO (Light is illuminated)

ON

HL LO REQ

Lighting switch OFF

OFF

Lighting switch 2ND HI or AUTO (Light is illuminated)

ON

HL HI REQ

Lighting switch OFF

OFF

Lighting switch HI

ON

FR FOG REQ

Lighting switch 2ND or AUTO (Light 
is illuminated)

Front fog lamp switch OFF

OFF

• Front fog lamp switch ON
• Daytime light activated (Canada 

only)

ON

H L WASHER REQ

NOTE:
This item is displayed, but cannot be monitored.

OFF

FR WIP REQ

Ignition switch ON

Front wiper switch OFF

STOP

Front wiper switch INT

1LOW

Front wiper switch LO

LOW

Front wiper switch HI

HI

WIP AUTO STOP

Ignition switch ON

Front wiper stop position

STOP P

Any position other than front wiper 
stop position

ACT P

WIP PROT

Ignition switch ON

Front wiper operates normally

OFF

Front wiper stops at fail-safe opera-
tion

BLOCK

ST RLY REQ

Ignition switch OFF or ACC

OFF

Ignition switch START

ON

IGN RLY

Ignition switch OFF or ACC

OFF

Ignition switch ON

ON

RR DEF REQ

Rear defogger switch OFF

OFF

Rear defogger switch ON

ON

OIL P SW

Ignition switch OFF, ACC or engine running

OPEN

Ignition switch ON

CLOSE

DTRL REQ

NOTE:
This item is displayed, but cannot be monitored.

OFF

HOOD SW

NOTE:
This item is displayed, but cannot be monitored.

OFF

2009 Pathfinder

SEC-178

< ECU DIAGNOSIS >

[WITHOUT INTELLIGENT KEY SYSTEM]

IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)

THFT HRN REQ

Not operated

OFF

• Panic alarm is activated
• Horn is activated with VEHICLE SECURITY (THEFT WARNING) SYS-

TEM

ON

HORN CHIRP

Not operated

OFF

Door locking with keyfob or Intelligent Key (if equipped) (horn chirp mode)

ON

Monitor Item

Condition

Value/Status

2009 Pathfinder

IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)

SEC-179

< ECU DIAGNOSIS >

[WITHOUT INTELLIGENT KEY SYSTEM]

C

D

E

F

G

H

I

J

L

M

A

B

SEC

N

O

P

Terminal Layout

INFOID:0000000004432113

TERMINAL LAYOUT

Physical Values

INFOID:0000000004432114

PHYSICAL VALUES

WKIA5852E

2009 Pathfinder

SEC-180

< ECU DIAGNOSIS >

[WITHOUT INTELLIGENT KEY SYSTEM]

IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)

Terminal

Wire

color

Signal name

Signal 

input/

output

Measuring condition

Reference value

(Approx.)

Igni-

tion 

switch

Operation or condition

1

W

Battery power supply

Input

OFF

—

Battery voltage

2

R

Battery power supply

Input

OFF

—

Battery voltage

3

G

ECM relay

Output

—

Ignition switch ON or START

Battery voltage

Ignition switch OFF or ACC

0V

4

P

ECM relay

Output

—

Ignition switch ON or START

Battery voltage

Ignition switch OFF or ACC

0V

6

V

Throttle control motor 
relay

Output

—

Ignition switch ON or START

Battery voltage

Ignition switch OFF or ACC

0V

7

BR

ECM relay control

Input

—

Ignition switch ON or START

0V

Ignition switch OFF or ACC

Battery voltage

8

W/R

Fuse 54

Output

—

Ignition switch ON or START

Battery voltage

Ignition switch OFF or ACC

0V

10

R/B

Fuse 45

Output

ON

Daytime light system active

0V

Daytime light system inactive

Battery voltage

11

Y

A/C compressor

Output

ON or 

START

A/C switch ON or defrost A/C 
switch

Battery voltage

A/C switch OFF or defrost A/C 
switch

0V

12

W/G

Ignition switch sup-
plied power

Input

—

OFF or ACC

0V

ON or START

Battery voltage

13

R

Fuel pump relay

Output

—

Ignition switch ON or START

Battery voltage

Ignition switch OFF or ACC

0V

14

W/G

Fuse 49

Output

—

Ignition switch ON or START

Battery voltage

Ignition switch OFF or ACC

0V

15

W/R

Fuse 50 (ABS)

Output

—

Ignition switch ON or START

Battery voltage

Ignition switch OFF or ACC

0V

16

W/G

Fuse 51

Output

—

Ignition switch ON or START

Battery voltage

Ignition switch OFF or ACC

0V

17

W/G

Fuse 55

Output

—

Ignition switch ON or START

Battery voltage

Ignition switch OFF or ACC

0V

19

W

Starter motor

Output

START

—

Battery voltage

20

BR

Cooling fan motor 
(low)

Output

ON or 

START

—

Battery voltage

21

GR

Ignition switch sup-
plied power

Input

—

OFF or ACC

0V

START

Battery voltage

22

G

Battery power supply

Output

OFF

—

Battery voltage

23

LG

Door mirror defogger 
output signal

Output

—

When rear defogger switch is 
ON

Battery voltage

When raker defogger switch is 
OFF

0V

2009 Pathfinder

IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)

SEC-181

< ECU DIAGNOSIS >

[WITHOUT INTELLIGENT KEY SYSTEM]

C

D

E

F

G

H

I

J

L

M

A

B

SEC

N

O

P

24

P

Cooling fan motor 
(high)

Output

—

Conditions correct for cooling 
fan operation

Battery voltage

Conditions not correct for 
cooling fan operation

0V

27

W

Fuse 38

Output

—

Ignition switch ON or START

Battery voltage

Ignition switch OFF or ACC

0V

28

R

LH front parking and 
front side marker lamp

Output

OFF

Lighting 
switch 1st po-
sition

OFF

0V

ON

Battery voltage

29

G

Trailer tow relay

Output

ON

Lighting 
switch 1st po-
sition

OFF

0V

ON

Battery voltage

30

R/B

Fuse 53

Output

—

Ignition switch ON or START

Battery voltage

Ignition switch OFF or ACC

0V

32

GR

Wiper low speed sig-
nal

Output

ON or 

START

Wiper switch

OFF

Battery voltage

LO or INT

0V

35

L

Wiper high speed sig-
nal

Output

ON or 

START

Wiper switch

OFF, LO, INT

Battery voltage

HI

0V

37

Y

Power generation 
command signal

Output

—

Ignition switch ON

6.3 V

40% is set on "Active test," 
"ALTERNATOR DUTY" of 
"ENGINE"

3.8 V

40% is set on "Active test," 
"ALTERNATOR DUTY" of 
"ENGINE"

1.4 V

38

B

Ground

Input

—

—

0V

39

L

CAN-H

—

ON

—

—

40

P

CAN-L

—

ON

—

—

42

GR

Oil pressure switch

Input

—

Engine running

Battery voltage

Engine stopped

0V

Terminal

Wire

color

Signal name

Signal 

input/

output

Measuring condition

Reference value

(Approx.)

Igni-

tion 

switch

Operation or condition

JPMIA0001GB

JPMIA0002GB

JPMIA0003GB

2009 Pathfinder