Nissan Pathfinder. Manual - part 444

EC-82

< ECU DIAGNOSIS INFORMATION >

[VQ35DE]

ECM

41

(SB)

128

(B)

Heated oxygen sensor 2 heat-
er (bank 2)

Output

[Engine is running]
Engine speed: Below 3,600 rpm 
after the following conditions are 
met
• Engine: after warming up
• Keeping the engine speed be-

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

10 V

• [Ignition switch: ON]

Engine stopped

• [Engine is running]

Engine speed: Above 3,600 
rpm

BATTERY VOLTAGE
(11 - 14 V)

42

(BR)

128

(B)

EVAP canister purge volume 
control solenoid valve

Output

[Engine is running]
• Idle speed
• Accelerator pedal: Not de-

pressed even slightly, after 
engine starting

BATTERY VOLTAGE
(11 - 14 V)

[Engine is running]
Engine speed: approximately 
2,000 rpm (More than 100 sec-
onds after starting engine)

BATTERY VOLTAGE
(11 - 14 V)

43

(W)

128

(B)

Fuel pump relay

Output

• [Ignition switch: ON]

For 1 second after turning ig-
nition switch ON

• [Engine is running]

0 - 1.0 V

54

(LG)

84

(Y)

Sensor power supply
[Crankshaft position sensor 
(POS)]

—

[Ignition switch: ON]

5 V

55

(BR)

128

(B)

Intake valve timing control so-
lenoid valve (bank 1)

Output

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

BATTERY VOLTAGE
(11 - 14 V)

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

7 - 12 V

Terminal No.

Description

Condition

Value

(Approx.)

+

-–

Signal name

Input/

Output

JMBIA0902GB

JMBIA0039GB

JMBIA0040GB

JMBIA0038GB

ECM

EC-83

< ECU DIAGNOSIS INFORMATION >

[VQ35DE]

C

D

E

F

G

H

I

J

K

L

M

A

EC

N

P

O

56

(Y)

128

(B)

Intake valve timing control so-
lenoid valve (bank 2)

Output

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

BATTERY VOLTAGE
(11 - 14 V)

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

7 - 12 V

57

(L)

128

(B)

Heated oxygen sensor 2 
(bank 1)

Input

[Engine is running]
Revving engine from idle to 
3,000 rpm quickly after the fol-
lowing conditions are met
• Engine: after warming up
• Keeping the engine speed be-

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

0 - 1.0 V

58

(L)

128

(B)

Heated oxygen sensor 2 
(bank 2)

Input

[Engine is running]
Revving engine from idle to 
3,000 rpm quickly after the fol-
lowing conditions are met
• Engine: after warming up
• Keeping the engine speed be-

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

0 - 1.0 V

59

(B)

—

Sensor ground
(Heated oxygen sensor 2)

—

—

—

63

(SB)

64

(V)

Refrigerant pressure sensor

Input

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

fan motor switch: ON (Com-
pressor operates)

1.0 - 4.0 V

64

(V)

—

Sensor ground
(Refrigerant pressure sensor)

—

—

—

66

(W)

—

—

—

—

—

67

(Y)

—

—

—

—

—

68

(G)

—

—

—

—

—

69

(B)

128

(B)

A/F sensor 1 (bank 1)

Input

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

2.2 V
Output voltage varies with air fuel 
ratio.

70

(BR)

76

(B)

Engine coolant temperature 
sensor

Input

[Engine is running]

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

73

(W)

128

(B)

A/F sensor 1 (bank 1)

Input

[Ignition switch: ON]

1.8 V

74

(V)

80

(BR)

Intake air temperature sensor

Input

[Engine is running]

0 - 4.8 V
Output voltage varies with intake 
air temperature.

Terminal No.

Description

Condition

Value

(Approx.)

+

-–

Signal name

Input/

Output

JMBIA0038GB

EC-84

< ECU DIAGNOSIS INFORMATION >

[VQ35DE]

ECM

75

(LG)

—

—

—

—

—

76

(B)

—

Sensor ground
(Engine coolant temperature 
sensor, engine oil tempera-
ture sensor)

—

—

—

77

(B)

128

(B)

A/F sensor 1 (bank 2)

Input

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

2.2 V
Output voltage varies with air fuel 
ratio.

78

(G)

76

(B)

Engine oil temperature sensor

Input

[Engine is running]

0 - 4.8 V
Output voltage varies with engine 
oil temperature.

80

(BR)

—

Sensor ground
(Mass air flow sensor, intake 
air temperature sensor)

—

—

—

81

(W)

128

(B)

A/F sensor 1 (bank 2)

Input

[Ignition switch: ON]

1.8 V

82

(P)

80

(BR)

Mass air flow sensor

Input

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

0.8 - 1.2 V

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

1.6 - 1.9 V

83

(BR)

88

(LG)

Sensor power supply
[Camshaft position sensor 
(PHASE) (bank 1)]

—

[Ignition switch: ON]

5 V

84

(Y)

—

Sensor ground
[Crankshaft position sensor 
(POS)]

—

—

—

85

(B)

91

(—)

Knock sensor (bank 1)

Input

[Engine is running]
Idle speed

2.5 V*

1

86

(W)

91

(—)

Knock sensor (bank 2)

Input

[Engine is running]
Idle speed

2.5 V*

1

87

(V)

92

(SB)

Sensor power supply
[Camshaft position sensor 
(PHASE) (bank 2)]

—

[Ignition switch: ON]

5 V

88

(LG)

—

Sensor ground
[Camshaft position sensor 
(PHASE) (bank 1)]

—

—

—

Terminal No.

Description

Condition

Value

(Approx.)

+

-–

Signal name

Input/

Output

ECM

EC-85

< ECU DIAGNOSIS INFORMATION >

[VQ35DE]

C

D

E

F

G

H

I

J

K

L

M

A

EC

N

P

O

89

(L)

84

(Y)

Crankshaft position sensor 
(POS)

Input

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

NOTE:
The pulse cycle changes de-
pending on rpm at idle

4.0 - 5.0 V

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

4.0 - 5.0 V

91

(—)

—

Sensor ground
[Knock sensor (bank 1), 
knock sensor (bank 2)]

—

—

—

92

(SB)

—

Sensor ground
[Camshaft position sensor 
(PHASE) (bank 2)]

—

—

—

93

(LG)

92

(SB)

Camshaft position sensor 
(PHASE) (bank 2)

Input

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

NOTE:
The pulse cycle changes de-
pending on rpm at idle

3.0 - 5.0 V

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

3.0 - 5.0 V

94

(GR)

88

(LG)

Camshaft position sensor 
(PHASE) (bank 1)

Input

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

NOTE:
The pulse cycle changes de-
pending on rpm at idle

3.0 - 5.0 V

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

3.0 - 5.0 V

Terminal No.

Description

Condition

Value

(Approx.)

+

-–

Signal name

Input/

Output

JMBIA0041GB

JMBIA0042GB

JMBIA0045GB

JMBIA0046GB

JMBIA0045GB

JMBIA0046GB