Nissan Pathfinder (2009 year). Manual - part 360

 

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Nissan Pathfinder (2009 year). Manual - part 360

 

 

EC-894

< ECU DIAGNOSIS >

[VK56DE]

ECM

40
41
42
63

V
R
O
W

Fuel injector No. 6
Fuel injector No. 4 
Fuel injector No. 2
Fuel injector No. 8

[Engine is running]
• Warm-up condition
• Idle speed
NOTE:
The pulse cycle changes depending on 
rpm at idle

BATTERY VOLTAGE

(11 - 14 V)

[Engine is running]
• Warm-up condition
• Engine speed: 2,000 rpm

BATTERY VOLTAGE

(11 - 14 V)

45

R

EVAP canister purge volume 
control solenoid valve

[Engine is running]
• Idle speed
• Accelerator pedal: Not depressed even 

slightly, after engine starting

BATTERY VOLTAGE

(11 - 14 V)

[Engine is running]
• Engine speed: About 2,000 rpm (More 

than 100 seconds after starting engine)

BATTERY VOLTAGE

(11 - 14 V)

46
60
61
62

LG
V
L
Y

Ignition signal No. 7
Ignition signal No. 5
Ignition signal No. 3
Ignition signal No. 1

[Engine is running]
• Warm-up condition
• Idle speed
NOTE:
The pulse cycle changes depending on 
rpm at idle

0 - 0.3 V

[Engine is running]
• Warm-up condition
• Engine speed: 2,500 rpm

0.1 - 0.6 V

47

L

Sensor power supply
(Throttle position sensor)

[Ignition switch: ON]

Approximately 5 V

TER-

MI-

NAL 

NO.

WIRE 

COLOR

ITEM

CONDITION

DATA (DC Voltage)

SEC984C

SEC985C

SEC990C

SEC991C

SEC986C

SEC987C

2009 Pathfinder

ECM

EC-895

< ECU DIAGNOSIS >

[VK56DE]

C

D

E

F

G

H

I

J

K

L

M

A

EC

N

P

O

48

SB

Sensor power supply
(EVAP control system pressure 
sensor)

[Ignition switch: ON]

Approximately 5 V

49

P

Sensor power supply
(Refrigerant pressure sensor)

[Ignition switch: ON]

Approximately 5 V

50

W

Throttle position sensor 1

[Ignition switch: ON]
• Engine: Stopped
• Selector lever: D position
• Accelerator pedal: Fully released

More than 0.36 V

[Ignition switch: ON]
• Engine: Stopped
• Selector lever: D position
• Accelerator pedal: Fully depressed

Less than 4.75 V

51

P

Mass air flow sensor

[Engine is running]
• Warm-up condition
• Idle speed

1.0 - 1.3 V

[Engine is running]
• Warm-up condition
• Engine speed: 2,500 rpm

1.7 - 2.1 V

53

L

Intake valve timing control posi-
tion sensor (Bank 2)

[Engine is running]
• Warm-up condition
• Idle speed

0 - 1.0 V

[Engine is running]
• Engine speed: 2,000 rpm

0 - 1.0 V

55

G

Heated oxygen sensor 2 (bank 1)

[Engine is running]
• Revving engine from idle to 3,000 rpm 

quickly after the following conditions are 
met.

- Engine: After warming up
- Keeping the engine speed between 

3,500 and 4,000 rpm for 1 minute and at 
idle for 1 minute under no load

0 - Approximately 1.0 V

56

W

A/F sensor 1 (bank 1)

[Ignition switch: ON]

Approximately 2.2 V

TER-

MI-

NAL 

NO.

WIRE 

COLOR

ITEM

CONDITION

DATA (DC Voltage)

PBIB2046E

2009 Pathfinder

EC-896

< ECU DIAGNOSIS >

[VK56DE]

ECM

65
79
80
81

GR
P
GR
G

Ignition signal No. 8
Ignition signal No. 6
Ignition signal No. 4
Ignition signal No. 2

[Engine is running]
• Warm-up condition
• Idle speed
NOTE:
The pulse cycle changes depending on 
rpm at idle

0 - 0.3 V

[Engine is running]
• Warm-up condition
• Engine speed: 2,500 rpm

0.1 - 0.6 V

66

B

Sensor ground
(Throttle position sensor)

[Engine is running]
• Warm-up condition
• Idle speed

Approximately 0 V

67

B

Sensor ground

[Engine is running]
• Warm-up condition
• Idle speed

Approximately 0 V

68

G

Sensor power supply
(PSP sensor)

[Ignition switch: ON]

Approximately 5 V

69

R

Throttle position sensor 2

[Ignition switch: ON]
• Engine: Stopped
• Selector lever: D position
• Accelerator pedal: Fully released

Less than 4.75 V

[Ignition switch: ON]
• Engine: Stopped
• Selector lever: D position
• Accelerator pedal: Fully depressed

More than 0.36 V

70

BR

Refrigerant pressure sensor

[Engine is running]
• Warm-up condition
• Both A/C switch and blower fan switch: 

ON (Compressor: Operates.)

1.0 - 4.0 V

71

R

Battery current sensor

[Engine is running]
• Battery: Fully charged*
• Idle speed

Approximately 2.6 - 3.5 V

72

Y

Intake valve timing control posi-
tion sensor (Bank 1)

[Engine is running]
• Warm-up condition
• Idle speed

0 -1.0 V

[Engine is running]
• Engine speed: 2,000rpm

0 - 1.0 V

73

Y

Engine coolant temperature sen-
sor

[Engine is running]

Approximately 0 - 4.8 V
Output voltage varies with engine 
coolant temperature.

TER-

MI-

NAL 

NO.

WIRE 

COLOR

ITEM

CONDITION

DATA (DC Voltage)

SEC986C

SEC987C

PBIB2046E

2009 Pathfinder

ECM

EC-897

< ECU DIAGNOSIS >

[VK56DE]

C

D

E

F

G

H

I

J

K

L

M

A

EC

N

P

O

74

SB

Heated oxygen sensor 2 (bank 2)

[Engine is running]
• Revving engine from idle to 3,000 rpm 

quickly after the following conditions are 
met.

- Engine: After warming up
- Keeping the engine speed between 

3,500 and 4,000 rpm for 1 minute and at 
idle for 1 minute under no load

0 - Approximately 1.0 V

75

P

A/F sensor 1 (bank 2)

[Ignition switch: ON]

Approximately 2.2 V

78

GR

Sensor ground
(Heated oxygen sensor 2)

[Engine is running]
• Warm-up condition
• Idle speed

Approximately 0 V

82

B

Sensor ground
(APP sensor 1)

[Engine is running]
• Warm-up condition
• Idle speed

Approximately 0 V

83

B

Sensor ground
(APP sensor 2)

[Engine is running]
• Warm-up condition
• Idle speed

Approximately 0 V

85

W

Data link connector

—

—

86

P

CAN communication line

—

—

90

L

Sensor power supply
(APP sensor 1)

[Ignition switch: ON]

Approximately 5 V

91

G

Sensor power supply
(APP sensor 2)

[Ignition switch: ON]

Approximately 5 V

94

L

CAN communication line

—

—

98

GR

Accelerator pedal position sen-
sor 2

[Ignition switch: ON]
• Engine: Stopped
• Accelerator pedal: Fully released

0.28 - 0.48 V

[Ignition switch: ON]
• Engine: Stopped
• Accelerator pedal: Fully depressed

More than 2.0 V

99

SB

ASCD steering switch

[Ignition switch: ON]
• ASCD steering switch: OFF

Approximately 4 V

[Ignition switch: ON]
• MAIN switch: Pressed

Approximately 0V

[Ignition switch: ON]
• CANCEL switch: Pressed

Approximately 1 V

[Ignition switch: ON]
• RESUME/ACCELERATE switch: 

Pressed

Approximately 3 V

[Ignition switch: ON]
• SET/COAST switch: Pressed

Approximately 2 V

101

LG

Stop lamp switch

[Ignition switch: OFF]
• Brake pedal: Fully released

Approximately 0 V

[Ignition switch: OFF]
• Brake pedal: Slightly depressed

BATTERY VOLTAGE
(11 - 14 V)

102

G

PNP signal

[Ignition switch: ON]
• Selector lever: P or N position

Approximately 0 V

[Ignition switch: ON]
• Selector lever: Except above position

BATTERY VOLTAGE
(11 - 14 V)

TER-

MI-

NAL 

NO.

WIRE 

COLOR

ITEM

CONDITION

DATA (DC Voltage)

2009 Pathfinder

EC-898

< ECU DIAGNOSIS >

[VK56DE]

ECM

: Average voltage for pulse signal (Actual pulse signal can be confirmed by oscilloscope.)

*:Before measuring the terminal voltage, confirm that the battery is fully charged. Refer to 

PG-5, "How to Handle Battery"

.

104

O

Throttle control motor relay

[Ignition switch: OFF]

BATTERY VOLTAGE
(11 - 14 V)

[Ignition switch: ON]

0 - 1.0 V

106

R

Accelerator pedal position sen-
sor 1

[Ignition switch: ON]
• Engine: Stopped
• Accelerator pedal: Fully released

0.65 - 0.87 V

[Ignition switch: ON]
• Engine: Stopped
• Accelerator pedal: Fully depressed

More than 4.3 V

107

Y

Fuel tank temperature sensor

[Engine is running]

Approximately 0 - 4.8 V
Output voltage varies with fuel 
tank temperature.

108

LG

ASCD brake switch

[Ignition switch: ON]
• Brake pedal: Slightly depressed

Approximately 0 V

[Ignition switch: ON]
• Brake pedal: Fully released

BATTERY VOLTAGE
(11 - 14 V)

109

W/R

Ignition switch

[Ignition switch: OFF]

0 V

[Ignition switch: ON]

BATTERY VOLTAGE
(11 - 14 V)

111

BR

ECM relay
(Self shut-off)

[Engine is running]
[Ignition switch: OFF]
• For a few seconds after turning ignition 

switch OFF

0 - 1.5 V

[Ignition switch: OFF]
• More than a few seconds after turning ig-

nition switch OFF

BATTERY VOLTAGE
(11 - 14 V)

113

V

Fuel pump relay

[Ignition switch: ON]
• For 1 second after turning ignition switch 

ON

[Engine is running]

0 - 1.5 V

[Ignition switch: ON]
• More than 1 second after turning ignition 

switch ON

BATTERY VOLTAGE
(11 - 14 V)

115
116

B
GR

ECM ground

[Engine is running]
• Idle speed

Body ground

117

G

EVAP canister vent control valve

[Ignition switch: ON]

BATTERY VOLTAGE
(11 - 14 V)

119

120

R
P

Power supply for ECM

[Ignition switch: ON]

BATTERY VOLTAGE
(11 - 14 V)

121

R/B

Power supply for ECM
(Back up)

[Ignition switch: OFF]

BATTERY VOLTAGE
(11 - 14 V)

TER-

MI-

NAL 

NO.

WIRE 

COLOR

ITEM

CONDITION

DATA (DC Voltage)

2009 Pathfinder

ECM

EC-899

< ECU DIAGNOSIS >

[VK56DE]

C

D

E

F

G

H

I

J

K

L

M

A

EC

N

P

O

Wiring Diagram - ENGINE CONTROL SYSTEM -

INFOID:0000000003936870

ABBWA0048GB

2009 Pathfinder

EC-900

< ECU DIAGNOSIS >

[VK56DE]

ECM

ABBWA0049GB

2009 Pathfinder

ECM

EC-901

< ECU DIAGNOSIS >

[VK56DE]

C

D

E

F

G

H

I

J

K

L

M

A

EC

N

P

O

ABBWA0050GB

2009 Pathfinder

 

 

 

 

 

 

 

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