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Home >> Nissan-Datsun >> 2021 >> NV2500 HD S >> Repair and Diagnosis >> External Pages >> Different car >> Section 262 (Engine Control System (Introduction) (4.0L)) >> Ecu Diagnosis Information >> ECM >> Reference Value >> Physical Values

Physical Values

WARNING: This page is about a different car, the 2018 Nissan NV3500 HD, 2018 Nissan NV2500 HD, and 2018 Nissan NV1500. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
  • ECM located in the engine room passenger side behind reservoir tank.
  • Specification data are reference values and are measured between each terminal and ground.
  • Pulse signal is measured by CONSULT.

Terminal No.

(Wire color)

Description

Condition

Value

(Approx.)

+

-

Signal name

Input/Output

1

(L)

128

(B)

Throttle control motor relay power supply

Input

[Ignition switch: ON]

Battery voltage

(11 - 14 V)

2

(L/W)

128

(B)

Throttle control motor (Close)

Output

[Ignition switch: ON]

  • Engine: Stopped
  • Shift lever: D
  • Accelerator pedal: Fully released

0 - 14 V SYMBOL

SYMBOLGNSPBIB1104E-104Courtesy of NISSAN NORTH AMERICA, INC.

3

(BR)

128

(B)

A/F sensor 1 heater (Bank 2)

Output

[Engine is running]

  • Warm-up condition
  • Idle speed

    (More than 140 seconds after starting engine)

2.9 - 8.8 V SYMBOL

SYMBOLGNSPBIA8148J-148Courtesy of NISSAN NORTH AMERICA, INC.

5

(L/B)

128

(B)

Throttle control motor (Open)

Output

[Ignition switch: ON]

  • Engine: Stopped
  • Shift lever: D
  • Accelerator pedal: Fully depressed

0 - 14 V SYMBOL

SYMBOLGNSPBIB1105E-105Courtesy of NISSAN NORTH AMERICA, INC.

6

(B)

128

(B)

A/F sensor 1 heater (Bank 1)

Output

[Engine is running]

  • Warm-up condition
  • Idle speed

    (More than 140 seconds after starting engine)

2.9 - 8.8 V SYMBOL

SYMBOLGNSPBIA8148J-148Courtesy of NISSAN NORTH AMERICA, INC.

9

(L)

11

(Y)

14

(V)

128

(B)

Ignition signal No. 3

Ignition signal No. 1

Ignition signal No. 5

Output

[Engine is running]

  • Warm-up condition
  • Idle speed
    NOTE: The pulse cycle changes depending on rpm at idle

0 - 0.2 V SYMBOL

SYMBOLG04073752Courtesy of NISSAN NORTH AMERICA, INC.

[Engine is running]

  • Warm-up condition
  • Engine speed: 2, 500 rpm

0.1 - 0.4 V SYMBOL

SYMBOLGNSSEC987C-987Courtesy of NISSAN NORTH AMERICA, INC.

10

(G)

13

(V)

15

(W)

128

(B)

Ignition signal No. 2

Ignition signal No. 6

Ignition signal No. 4

Output

[Engine is running]

  • Warm-up condition
  • Idle speed
    NOTE: The pulse cycle changes depending on rpm at idle

0 - 0.2 V SYMBOL

SYMBOLG04073752Courtesy of NISSAN NORTH AMERICA, INC.

[Engine is running]

  • Warm-up condition
  • Engine speed: 2, 500 rpm

0.1 - 0.4 V SYMBOL

SYMBOLGNSSEC987C-987Courtesy of NISSAN NORTH AMERICA, INC.

12

(B)

16

(B)

123

(B)

124

(B)

127

(B)

128

(B)

-

ECM ground

-

[Engine is running]

  • Idle speed

Body ground

19

(R)

-

Sensor ground

(Throttle position sensor)

-

[Engine is running]

  • Warm-up condition
  • Idle speed

0 V

22

(B)

19

(R)

Throttle position sensor 1

Input

[Ignition switch: ON]

  • Engine: Stopped
  • Shift lever: D
  • Accelerator pedal: Fully released

More than 0.36 V

[Ignition switch: ON]

  • Engine: Stopped
  • Shift lever: D
  • Accelerator pedal: Fully depressed

Less than 4.75 V

23

(W)

19

(R)

Throttle position sensor 2

Input

[Ignition switch: ON]

  • Engine: Stopped
  • Shift lever: D
  • Accelerator pedal: Fully released

Less than 4.75 V

[Ignition switch: ON]

  • Engine: Stopped
  • Shift lever: D
  • Accelerator pedal: Fully depressed

More than 0.36 V

24

(W)

19

(R)

Sensor power supply (Throttle position sensor)

-

[Ignition switch: ON]

5 V

26

(R)

128

(B)

Power supply for ECM (Back-up)

Input

[Ignition switch: OFF]

Battery voltage

(11 - 14 V)

31

(W)

128

(B)

ECM relay

(Self shut-off)

Output

[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 ignition switch OFF

Battery voltage

(11 - 14 V)

33

(G)

46

(L)

48

(V)

128

(B)

Fuel injector No. 1

Fuel injector No. 5

Fuel injector No. 3

Output

[Engine is running]

  • Warm-up condition
  • Idle speed
    NOTE: The pulse cycle changes depending on rpm at idle

Battery voltage

(11 - 14 V) SYMBOL

SYMBOLGNSSEC984C-984Courtesy of NISSAN NORTH AMERICA, INC.

[Engine is running]

  • Warm-up condition
  • Engine speed: 2, 000 rpm

Battery voltage

(11 - 14 V) SYMBOL

SYMBOLGNSSEC985C-985Courtesy of NISSAN NORTH AMERICA, INC.

34

(O)

128

(B)

Throttle control motor relay

Output

[Ignition switch: OFF]

Battery voltage

(11 - 14 V)

[Ignition switch: ON]

0 - 1.0 V

37

(GR)

128

(B)

Heated oxygen sensor 2 heater (Bank 1)

Output

[Engine is running]

  • Engine speed: Below 3, 600 rpm 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 - 1.0 V

[Ignition switch: ON]

  • Engine: Stopped

[Engine is running]

  • Engine speed: Above 3, 600 rpm

Battery voltage

(11 - 14 V)

39

(SB)

128

(B)

VIAS control solenoid valve

Output

[Engine is running]

  • Idle speed

Battery voltage

(11 - 14 V)

[Engine is running]

  • Engine speed: Between 2, 200 and 3, 300 rpm

0 - 1.0 V

41

(LG)

128

(B)

Heated oxygen sensor 2 heater (Bank 2)

Output

[Engine is running]

  • Engine speed is below 3, 600 rpm 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 - 1.0 V

[Ignition switch: ON]

  • Engine: Stopped

[Engine is running]

  • Engine speed: Above 3, 600 rpm

Battery voltage

(11 - 14 V)

42

(SB)

128

(B)

EVAP canister purge volume control solenoid valve

Output

[Engine is running]

  • Idle speed
  • Accelerator pedal is not depressed even slightly, after engine starting

Battery voltage

(11 - 14 V) SYMBOL

SYMBOLGNSSEC990C-990Courtesy of NISSAN NORTH AMERICA, INC.

[Engine is running]

  • Engine speed: About 2, 000 rpm (More than 100 seconds after starting engine)

Battery voltage

(11 - 14 V) SYMBOL

SYMBOLGNSSEC991C-991Courtesy of NISSAN NORTH AMERICA, INC.

43

(GR)

128

(B)

Fuel pump relay

Output

[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)

44

(L)

45

(Y)

47

(P)

128

(B)

Fuel injector No. 2

Fuel injector No. 6

Fuel injector No. 4

Output

[Engine is running]

  • Warm-up condition
  • Idle speed
    NOTE: The pulse cycle changes depending on rpm at idle

Battery voltage

(11 - 14 V) SYMBOL

SYMBOLGNSSEC984C-984Courtesy of NISSAN NORTH AMERICA, INC.

[Engine is running]

  • Warm-up condition
  • Engine speed: 2, 000 rpm

Battery voltage

(11 - 14 V) SYMBOL

SYMBOLGNSSEC985C-985Courtesy of NISSAN NORTH AMERICA, INC.

55

(LG)

128

(B)

Intake valve timing control solenoid 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, 500 rpm

7 - 12 V SYMBOL

SYMBOLG04074581Courtesy of NISSAN NORTH AMERICA, INC.

56

(W)

128

(B)

Intake valve timing control solenoid 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, 500 rpm

7 - 12 V SYMBOL

SYMBOLG04074581Courtesy of NISSAN NORTH AMERICA, INC.

57

(R)

59

(B)

Heated oxygen sensor 2 (Bank 1)

Input

[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 - 1.0 V

58

(R)

59

(B)

Heated oxygen sensor 2 (Bank 2)

Input

[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 - 1.0 V

59

(B)

-

Sensor ground

(Heated oxygen sensor 2)

-

[Engine is running]

  • Warm-up condition
  • Idle speed

0 V

63

(GR)

64

(B)

Refrigerant pressure sensor

Input

[Engine is running]

  • Warm-up condition
  • Both A/C switch and blower switch: ON (Compressor operates)

1.0 - 4.0 V

64

(B)

-

Sensor ground

(Refrigerant pressure sensor)

-

[Engine is running]

  • Warm-up condition
  • Idle speed

0 V

65

(R)

72

(B)

Power steering pressure sensor

Input

[Engine is running]

  • Steering wheel: Being turned

0.5 - 4.5 V

[Engine is running]

  • Steering wheel: Not being turned

0.4 - 0.8 V

69

(O)

128

(B)

A/F sensor 1 (Bank 1)

Input

[Engine is running]

  • Warm-up condition
  • Engine speed: 2, 000 rpm

1.8 V

Output voltage varies with air fuel ratio.

70

(Y)

76

(B)

Engine coolant temperature sensor

Input

[Engine is running]

0 - 4.8 V

Output voltage varies with engine coolant temperature.

72

(B)

-

Sensor ground

(Power steering pressure sensor)

-

[Engine is running]

  • Warm-up condition
  • Idle speed

0 V

73

(W)

128

(B)

A/F sensor 1 (Bank 1)

Input

[Ignition switch: ON]

2.2 V

74

(V)

64

(B)

Intake air temperature sensor

Input

[Engine is running]

0 - 4.8 V

Output voltage varies with intake air temperature.

76

(B)

-

Sensor ground

(Engine coolant temperature sensor)

-

[Engine is running]

  • Warm-up condition
  • Idle speed

0 V

77

(G)

128

(B)

A/F sensor 1 (Bank 2)

Input

[Engine is running]

  • Warm-up condition
  • Engine speed: 2, 000 rpm

1.8 V

Output voltage varies with air fuel ratio.

79

(SB)

72

(B)

Sensor power supply

(Power steering pressure sensor)

-

[Ignition switch: ON]

5 V

80

(B)

-

Sensor ground

(Mass air flow sensor)

-

[Engine is running]

  • Warm-up condition
  • Idle speed

0 V

81

(L)

128

(B)

A/F sensor 1 (Bank 2)

Input

[Ignition switch: ON]

2.2 V

82

(W)

80

(B)

Mass air flow sensor

Input

[Engine is running]

  • Warm-up condition
  • Idle speed

0.9 - 1.2 V

[Engine is running]

  • Warm-up condition
  • Engine speed: 2, 500 rpm

1.5 - 1.8 V

85

(W)

128

(B)

Knock sensor

(Bank 1)

Input

[Engine is running]

  • Idle speed

2.5 V

86

(W)

128

(B)

Knock sensor

(Bank 2)

Input

[Engine is running]

  • Idle speed

2.5 V

89

(O)

128

(B)

Crankshaft position sensor (POS)

Input

[Engine is running]

  • Warm-up condition
  • Idle speed
    NOTE: The pulse cycle changes depending on rpm at idle

10 V SYMBOL

SYMBOLGNSPBIB1041E-041Courtesy of NISSAN NORTH AMERICA, INC.

[Engine is running]

  • Engine speed: 2, 000 rpm

10 V SYMBOL

SYMBOLGNSPBIB1042E-042Courtesy of NISSAN NORTH AMERICA, INC.

91

(B)

-

Sensor ground

(Knock sensor 1 & 2)

-

[Engine is running]

  • Warm-up condition
  • Idle speed

0 V

93

(Y)

128

(B)

Camshaft position sensor (PHASE) (Bank 2)

Input

[Engine is running]

  • Warm-up condition
  • Idle speed
    NOTE: The pulse cycle changes depending on rpm at idle

1.0 - 4.0 V SYMBOL

SYMBOLGNSPBIB1039E-039Courtesy of NISSAN NORTH AMERICA, INC.

[Engine is running]

  • Engine speed: 2, 000 rpm

1.0 - 4.0 V SYMBOL

SYMBOLGNSPBIB1040E-040Courtesy of NISSAN NORTH AMERICA, INC.

94

(L)

128

(B)

Camshaft position sensor (PHASE) (Bank 1)

Input

[Engine is running]

  • Warm-up condition
  • Idle speed
    NOTE: The pulse cycle changes depending on rpm at idle

1.0 - 4.0 V SYMBOL

SYMBOLGNSPBIB1039E-039Courtesy of NISSAN NORTH AMERICA, INC.

[Engine is running]

  • Engine speed: 2, 000 rpm

1.0 - 4.0 V SYMBOL

SYMBOLGNSPBIB1040E-040Courtesy of NISSAN NORTH AMERICA, INC.

96

(O)

64

(B)

Sensor power supply

(Refrigerant pressure sensor/Intake air temperature sensor)

-

[Ignition switch: ON]

5 V

97

(BR)

100

(R)

Accelerator pedal position sensor 1

Input

[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

98

(LG)

116

(Y)

Accelerator pedal position sensor 2

Input

[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

99

(L)

100

(R)

Sensor power supply

(APP sensor 1)

-

[Ignition switch: ON]

5 V

100

(R)

-

Sensor ground

(APP sensor 1)

-

[Engine is running]

  • Warm-up condition
  • Idle speed

0 V

101

(R)

108

(B)

ASCD steering switch

Input

[Ignition switch: ON]

  • ASCD steering switch: OFF

4 V

[Ignition switch: ON]

  • MAIN switch: Pressed

0 V

[Ignition switch: ON]

  • CANCEL switch: Pressed

1 V

[Ignition switch: ON]

  • ACCEL/RES switch: Pressed

3 V

[Ignition switch: ON]

  • COAST/SET switch: Pressed

2 V

102

(L)

112

(B)

EVAP control system pressure sensor

Input

[Ignition switch: ON]

1.8 - 4.8 V

103

(W)

116

(Y)

Sensor power supply

(APP sensor 2)

-

[Ignition switch: ON]

5 V

104

(O)

-

Data link connector

-

[Ignition switch: ON]

  • CONSULT or GST: disconnected

5 V - Battery voltage (11 - 14 V)

105

(Y)

112

(B)

Atmospheric pressure sensor

input

[Ignition switch: ON]

1.8 - 4.8 V

Output voltage varies with atmospheric pressure.

106

(G)

128

(B)

EVAP canister vent control valve

Output

[Ignition switch: ON]

Battery voltage

(11 - 14 V)

107

(SB)

112

(B)

Sensor power supply

(EVAP control system pressure sensor)

-

[Ignition switch: ON]

5 V

108

(B)

-

Sensor ground

(ASCD steering switch)

-

[Engine is running]

  • Warm-up condition
  • Idle speed

0 V

109

(W)

128

(B)

Ignition switch

Input

[Ignition switch: OFF]

0 V

[Ignition switch: ON]

Battery voltage

(11 - 14 V)

111

(Y)

128

(B)

Fuel tank temperature sensor

Input

[Engine is running]

0 - 4.8 V

Output voltage varies with fuel tank temperature.

112

(B)

-

Sensor ground

(EVAP control system pressure sensor)

-

[Engine is running]

  • Warm-up condition
  • Idle speed

0 V

113

(P)

-

CAN communication line

-

-

-

114

(L)

-

CAN communication line

-

-

-

116

(Y)

-

Sensor ground

(APP sensor 2)

-

[Engine is running]

  • Warm-up condition
  • Idle speed

0 V

118

(BR)

128

(B)

PNP signal

Input

[Ignition switch: ON]

  • Shift lever: P or N

Battery voltage

(11 - 14 V)

[Ignition switch: ON]

  • Except above position

0 V

121

(BR)

128

(B)

Power supply for ECM

Input

[Ignition switch: ON]

Battery voltage

(11 - 14 V)

122

(LG)

128

(B)

Stop lamp switch

Input

[Ignition switch: OFF]

  • Brake pedal: Fully released

0 V

[Ignition switch: OFF]

  • Brake pedal: Slightly depressed

Battery voltage

(11 - 14 V)

126

(BR)

128

(B)

Brake pedal position switch

Input

[Ignition switch: ON]

  • Brake pedal: Slightly depressed

0 V

[Ignition switch: ON]

  • Brake pedal: Fully released

Battery voltage

(11 - 14 V)

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

*1: This may vary depending on internal resistance of the tester.

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

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