LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Nissan-Datsun >> 2016 >> Sentra SL >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (Introduction And Wiring Diagrams) >> Ecu Diagnosis Information >> ECM >> Reference Value >> Physical Values
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Physical Values

NOTE:
  • ECM is located in the engine room left side near battery.
  • 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
(P)		 128
(B/Y)		 Throttle control motor (Close) Output [Ignition switch: ON]
  • Engine stopped
  • Selector lever: D (CVT)
  • Shifter lever: 1st (M/T)
  • Accelerator pedal: Fully released
 1.8 VSTARF
STARFGNSJMBIA0326GB-326Courtesy of NISSAN NORTH AMERICA, INC.
2
(G)		 128
(B/Y)		 Throttle control motor power supply Input [Ignition switch: ON] Battery voltage
(11 - 14 V)
3
(V)		 128
(B/Y)		 Throttle control motor (Open) Output [Ignition switch: ON]
  • Engine stopped
  • Selector lever: D (CVT)
  • Shifter lever: 1st (M/T)
  • Accelerator pedal: Fully depressed
 3.2 VSTARF
STARFGNSJMBIA0324GB-324Courtesy of NISSAN NORTH AMERICA, INC.
4
(W)		 8
(B)		 Knock sensor Input [Engine is running]
  • Idle speed
 2.5 V
5
(G)		 128
(B/Y)		 Intake manifold tuning valve motor (Close) Output [Ignition switch ON]
  • Engine coolant temperature: Normal operating condition
  • Accelerator pedal: Depressed → fully released
 Battery voltage appears for about 1 second.
6
(R)		 128
(B/Y)		 Intake manifold tuning valve motor power supply Input [Ignition switch: ON] Battery voltage
(11 - 14 V)
7
(R)		 128
(B/Y)		 Intake manifold tuning valve motor (Open) Output [Ignition switch ON]
  • Engine coolant temperature: normal operating condition
  • Accelerator pedal: Fully released → depressed
 Battery voltage appears for about 1 second.
8
(B)		 - Sensor ground
(Knock sensor)		 - - -
9
(BR)
10
(SB)
13
(O)
14
(V)		 128
(B/Y)		 Fuel injector No. 4
Fuel injector No. 3
Fuel injector No. 1
Fuel injector No. 2		 Output [Engine is running]
  • Warm-up condition
  • Idle speed
    NOTE:

    The pulse cycle changes depending on RPM at idle

 Battery voltage
(11 - 14 V)STARF
STARFGNSJSBIA3228ZZ-228Courtesy of NISSAN NORTH AMERICA, INC.
[Engine is running]
  • Warm-up condition
  • Engine speed: 2, 000 RPM
 Battery voltage
(11 - 14 V)STARF
STARFGNSJMBIA0090GB-090Courtesy of NISSAN NORTH AMERICA, INC.
12
(B)		 - ECM ground - - -
16
(B)		 - ECM ground - - -
17
(L)		 128
(B/Y)		 EVAP canister purge volume control solenoid valve Output [Engine is running]
  • Idle speed
  • Accelerator pedal: Not depressed even slightly, after engine starting
 Battery voltage
(11 - 14 V)STARF
STARFGNSJMBIA0087GB-087Courtesy of NISSAN NORTH AMERICA, INC.
[Engine is running]
  • Engine speed: About 2, 000 RPM (More than 100 seconds after starting engine.)
 10 VSTARF
STARFGNSJMBIA0328GB-328Courtesy of NISSAN NORTH AMERICA, INC.
18
(GR)		 128
(B/Y)		 Fuel pump relay Output [Ignition switch: ON]
  • For 1 second after turning ignition switch ON

[Engine is running]		 0 - 1.0 V
[Ignition switch: ON]
  • More than 1 second after turning ignition switch ON
 Battery voltage
(11 - 14 V)
21
(Y)		 128
(B/Y)		 Throttle control motor relay Output [Ignition switch: OFF] Battery voltage
(11 - 14 V)
[Ignition switch: ON] 0 - 1.0 V
22
(W)		 23
(BR)		 Heated oxygen sensor 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
23
(BR)		 - Sensor ground
(Heated oxygen sensor 2)		 - - -
25
(Y)		 26
(P)		 Engine oil temperature sensor Input [Engine is running] 0 - 4.8 V
Output voltage varies with engine oil temperature.
26
(P)		 - Sensor ground
(Engine oil temperature sensor)		 - - -
27
(LG)		 - Sensor ground
(Engine coolant temperature sensor)		 - - -
28
(V)		 27
(LG)		 Engine coolant temperature sensor Input [Engine is running] 0 - 4.8 V
Output voltage varies with engine coolant temperature.
30
(L)		 - Sensor ground
[Camshaft position sensor (PHASE)]		 - - -
31
(BR)		 30
(L)		 Camshaft position sensor (PHASE) Input [Engine is running]
  • Warm-up condition
  • Idle speed
    NOTE:

    The pulse cycle changes depending on RPM at idle

 1.0 - 2.0STARF
STARFGNSJSBIA2670ZZ-670Courtesy of NISSAN NORTH AMERICA, INC.
[Engine is running]
  • Engine speed is 2, 000 RPM
 1.0 - 2.0STARF
STARFGNSJSBIA2671ZZ-671Courtesy of NISSAN NORTH AMERICA, INC.
32
(GR)		 - Sensor power supply
[Camshaft position sensor (PHASE)]		 - [Ignition switch: ON] 5.0 V
33
(GR)		 34
(W)		 Intake air temperature sensor Input [Engine is running] 0 - 4.8 V
Output voltage varies with intake air temperature.
34
(W)		 - Sensor ground
(Mass air flow sensor, intake air temperature sensor)		 - - -
35
(G)		 34
(W)		 Mass air flow sensor Input [Ignition switch: ON]
  • Engine stopped
 Approx. 3, 700 Hz
[Engine is running]
  • Warm-up condition
  • Idle speed
 5, 100 - 5, 500 Hz
[Engine is running]
  • Warm-up condition
  • Engine is revving from idle to about 4, 000 RPM
 5, 100 - 5, 500 to Approx. 7, 000 Hz
36
(R)		 - Sensor power supply
(Mass air flow sensor, intake air temperature sensor)		 - [Ignition switch: ON] 5.0 V
37
(B)		 - Shield - - -
38
(W)		 - Sensor ground
(Engine oil pressure sensor)		 - - -
39
(G)		 38
(W)		 Engine oil pressure sensor Input [Engine is running]
  • Warm-up condition
  • Idle speed
 1.3 VSTARF
STARFGNSJPBIA3359ZZ-359Courtesy of NISSAN NORTH AMERICA, INC.
[Engine is running]
  • Warm-up condition
  • Engine speed is 2, 000 RPM
 2.7 VSTARF
STARFGNSJPBIA3360ZZ-360Courtesy of NISSAN NORTH AMERICA, INC.
40
(R)		 38
(W)		 Sensor power supply
(Engine oil pressure sensor)		 - [Ignition switch: ON] 5.0 V
41
(Y)		 128
(B/Y)		 A/F sensor 1 Input Engine running]
  • Warm-up condition
  • Engine speed: 2, 000 RPM
 2.2 V
(Output voltage varies with air-fuel ratio)
42
(W)		 - Sensor ground
[Exhaust valve timing control position sensor]		 - - -
43
(P)		 42
(W)		 Exhaust valve timing control position sensor Input [Engine is running]
  • Warm-up condition
  • Idle speed
    NOTE:

    The pulse cycle changes depending on RPM at idle

 1.0STARF
STARFGNSJSBIA2672ZZ-672Courtesy of NISSAN NORTH AMERICA, INC.
[Engine is running]
  • Engine speed is 2, 500 RPM
 1.0STARF
STARFGNSJSBIA2673ZZ-673Courtesy of NISSAN NORTH AMERICA, INC.
44
(R)		 - Sensor power supply
[Exhaust valve timing control position sensor]		 - [Ignition switch: ON] 5 V
45
(BR)		 128
(B/Y)		 A/F sensor 1 Input [Engine is running]
  • Engine speed is 2, 000 RPM
 2.2 V
Output voltage varies with air fuel ratio.
49
(G)		 128
(B/Y)		 Intake manifold runner control valve motor (Close) Output [Ignition switch ON]
  • Engine coolant temperature: More than 60°C (140°F)
  • Accelerator pedal: Depressed → fully released
 Battery voltage appears for about 1 second.
50
(R)		 128
(B/Y)		 Intake manifold runner control valve motor power supply Input [Ignition switch: ON] Battery voltage
(11 - 14 V)
51
(R)		 128
(B/Y)		 Intake manifold runner control valve motor (Open) Output [Ignition switch ON]
  • Engine coolant temperature: More than 60°C (140°F)
  • Accelerator pedal: Fully released → depressed
 Battery voltage appears for about 1 second.
52
(B)		 - ECM ground - - -
53
(G)		 128
(B/Y)		 A/F sensor 1 heater Input [Engine is running]
  • Warm-up condition
  • Idle speed

    (More than 260 seconds after starting engine)

 10 VSTARF
STARFGNSJPBIA4732ZZ-732Courtesy of NISSAN NORTH AMERICA, INC.
54
(G)		 128
(B/Y)		 Heated oxygen sensor 2 heater 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
 8 VSTARF
STARFGNSJMBIA0325GB-325Courtesy of NISSAN NORTH AMERICA, INC.
[Ignition switch: ON]
  • Engine stopped

[Engine is running]
  • Engine speed: Above 3, 600 RPM
 Battery voltage
(11 - 14 V)
61
(BG)		 62
(BR)		 Battery temperature sensor Input [Engine is running]
  • Battery temperature: 25°C (°F)
  • Idle speed
 3.3 V
62
(BR)		 - Sensor ground
(Battery current sensor, battery temperature sensor)		 - - -
63
(G)		 62
(BR)		 Battery current sensor Input [Engine is running]
  • Battery: Fully charged*
  • Idle speed
 2.6 - 3.5 V
64
(Y)		 - Sensor power supply
(Battery current sensor)		 - [Ignition switch: ON] 5.0 V
70
(W)		 - Sensor ground
[Crankshaft position sensor (POS)]		 - - -
71
(R)		 70
(W)		 Crankshaft position sensor (POS) Input [Engine is running]
  • Warm-up condition
  • Idle speed
    NOTE:

    The pulse cycle changes depending on RPM at idle

 1.0 VSTARF
STARFGNSJPBIA4728ZZ-728Courtesy of NISSAN NORTH AMERICA, INC.
[Engine is running]
  • Engine speed: 2, 000 RPM
 1.0 VSTARF
STARFGNSJPBIA4729ZZ-729Courtesy of NISSAN NORTH AMERICA, INC.
72
(G)		 - Sensor power supply
[Crankshaft position sensor (POS)]		 - [Ignition switch: ON] 5.0 V
73
(GR)		 - Shield - - -
77
(W)		 78
(R)		 Throttle position sensor 2 Input [Ignition switch: ON]
  • Engine stopped
  • Selector lever: D (CVT), 1st (M/T)
  • Accelerator pedal: Fully released
 Less than 4.75 V
[Ignition switch: ON]
  • Engine stopped
  • Selector lever: D (CVT), 1st (M/T)
  • Accelerator pedal: Fully depressed
 More than 0.36 V
78
(R)		 - Sensor ground
(Throttle position sensor)		 - - -
79
(G)		 78
(R)		 Throttle position sensor 1 Input [Ignition switch: ON]
  • Engine stopped
  • Selector lever: D (CVT), 1st (M/T)
  • Accelerator pedal: Fully released
 More than 0.36 V
[Ignition switch: ON]
  • Engine stopped
  • Selector lever: D (CVT), 1st (M/T)
  • Accelerator pedal: Fully depressed
 Less than 4.75 V
80
(B)		 - Sensor power supply
(Throttle position sensor)		 - [Ignition switch: ON] 5.0 V
81
(Y)		 128
(B/Y)		 Power supply for ECM (Backup) Input [Ignition switch: OFF] Battery voltage
(11 - 14 V)
83
(LG)		 92
(V)		 Intake manifold runner control valve position sensor Input [Ignition switch ON]
  • Engine coolant temperature: Between 0°C (32°F) and 45°C (113°F)
  • Accelerator pedal: Fully released
 Less than 2.4 V
[Ignition switch ON]
  • Engine coolant temperature: Between 0°C (32°F) and 45°C (113°F)
  • Accelerator pedal: Slightly depressed
 More than 3.5 V
84
(W)		 - Sensor power supply
(Intake manifold runner control valve position sensor)		 - [Ignition switch: ON] More than 4.98 V
86
(R)		 128
(B/Y)		 Ignition signal No. 1 Output [Engine is running]
  • Warm-up condition
  • Idle speed
    NOTE:

    The pulse cycle changes depending on RPM at idle

 0 - 0.1 VSTARF
STARFGNSJPBIA4733ZZ-733Courtesy of NISSAN NORTH AMERICA, INC.
87
(LG)		 Ignition signal No. 2
90
(P)		 Ignition signal No. 3 [Engine is running]
  • Warm-up condition
  • Engine speed: 2, 000 RPM
 0 - 0.2 VSTARF
STARFGNSJPBIA4734ZZ-734Courtesy of NISSAN NORTH AMERICA, INC.
91
(SB)		 Ignition signal No. 4
89
(GR)		 128
(B/Y)		 ECM relay
(Self shut-off)		 Output [Engine is running]
[Ignition switch: OFF]
  • A few seconds after turning ignition switch OFF
 0 - 1.0 V
[Ignition switch: OFF]
  • More than a few seconds after turning ignition switch OFF
 Battery voltage
(11 - 14 V)
92
(LG)		 - Sensor ground
(Intake manifold runner control valve position sensor)		 - - -
93
(LG)		 128
(B/Y)		 Intake valve timing control solenoid valve Output [Engine is running]
  • Warm-up condition
  • Idle speed
 0 V
[Engine is running]
  • Warm-up condition
  • When revving engine up to 2, 000 RPM quickly
 11 - 14 V STARF
STARFGNSJMBIA1638GB-638Courtesy of NISSAN NORTH AMERICA, INC.
94
(G)		 128
(B/Y)		 Exhaust valve timing control solenoid valve Output [Engine is running]
  • Warm-up condition
  • Idle speed
 0 V
[Engine is running]
  • Warm-up condition
  • Engine speed: 2, 000 RPM
 Battery voltage
(11 - 14 V)
97
(BR)		 128
(GR)		 EVAP canister vent control valve Output [Ignition switch: ON] Battery voltage
(11 - 14 V)
99
(P)		 - CAN communication line
(CAN-L)		 Input/Output - -
100
(L)		 - CAN communication line
(CAN-H)		 Input/Output - -
101
(G)		 128
(B/Y)		 Starter relay cut off signal Input/Output [Ignition switch: ON] 0 V
[Engine is running]
  • Warm-up condition
  • Idle speed
 Battery voltage
(11 - 14 V)
103
(LG)		 124
(Y)		 Refrigerant pressure sensor Input [Engine is running]
  • Warm-up condition
  • Both A/C switch and blower fan motor switch: ON (Compressor operates)
 1.0 - 4.0 V
104
(L)		 - Sensor power supply
(Refrigerant pressure sensor)		 - [Ignition switch: ON] 5.0 V
105
(V)		 128
(B/Y)		 Starter motor relay control signal Output [Engine is running]
  • Warm-up condition
  • Idle speed
  • Selector lever: D (CVT)
  • Shift lever: 1st (M/T)
  • Engine speed: Less than 1, 500 RPM
NOTE:

To decrease engine speed, perform the DTC confirmation procedure B in P1650. Refer to DTC LOGIC .

 0 V
(While operating the starter motor)
[Engine is running]
  • Warm-up condition
  • Idle speed
 Battery voltage
(11 - 14 V)
109
(O)		 128
(B/Y)		 Ignition switch Input [Ignition switch: OFF] 0 V
[Ignition switch: ON] Battery voltage
(11 - 14 V)
110
(G)		 111
(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
111
(B)		 - Sensor ground
(ASCD steering switch)		 - - -
113
(G)		 - Sensor power supply
(EVAP control system pressure sensor)		 - [Ignition switch: ON] 5.0 V
114
(P)		 124
(SB)		 EVAP control system pressure sensor Input [Ignition switch: ON] 0.5 - 4.6 V
115
(SB)		 128
(B/Y)		 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)
116
(G)		 128
(B/Y)		 Brake pedal position switch Input [Ignition switch: OFF]
  • Brake pedal: Fully released
 Battery voltage
(11 - 14 V)
[Ignition switch: OFF]
  • Brake pedal: Slightly depressed
 0 V
117
(BR)		 128
(B/Y)
  • PNP signal (CVT)
  • Neutral switch (M/T)
 Input [Ignition switch: ON]
  • Selector lever: P or N (CVT)
  • Shifter lever: Neutral (M/T)
 Battery voltage
(11 - 14 V)
[Ignition switch: ON]
  • Except above
 0 V
118
(O)		 - Sensor power supply
(Accelerator pedal position sensor 2)		 - [Ignition switch: ON] 5.0 V
119
(W)		 120
(Y)		 Accelerator pedal position sensor 2 Input [Ignition switch: ON]
  • Engine stopped
  • Accelerator pedal: Fully released
 0.3 - 0.6 V
[Ignition switch: ON]
  • Engine stopped
  • Accelerator pedal: Fully depressed
 1.95 - 2.4 V
120
(Y)		 - Sensor ground
(Accelerator pedal position sensor 2)		 - - -
121
(G)		 128
(B/Y)		 Power supply for ECM Input [Ignition switch: ON] Battery voltage
(11 - 14 V)
122
(V)		 - Sensor power supply
(Accelerator pedal position sensor 1)		 - [Ignition switch: ON] 5.0 V
123
(B/Y)		 - ECM ground - - -
124
(V)		 - Sensor ground
(EVAP control system pressure sensor, refrigerant pressure sensor)		 - - -
126
(R)		 127
(GR)		 Accelerator pedal position sensor 1 Input [Ignition switch: ON]
  • Engine stopped
  • Accelerator pedal: Fully released
 0.6 - 0.9 V
[Ignition switch: ON]
  • Engine stopped
  • Accelerator pedal: Fully depressed
 3.9 - 4.7 V
127
(GR)		 - Sensor ground
(Accelerator pedal position sensor 1)		 - - -
128
(B/Y)		 - ECM ground - - -

STARF : 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 HOW TO HANDLE BATTERY .

scientia non olet · About LEMON Manuals