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Home >> Nissan-Datsun >> 2012 >> Versa S, 4D Hatchback, Automatic Trans >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - Introduction (Hatchback) >> Service Information >> Trouble Diagnosis >> ECM Terminal and Reference Value >> ECM Inspection Table
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ECM Inspection Table

Specification data are reference values and are measured between each terminal and ground.

Pulse signal is measured by CONSULT.

CAUTION: Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in damage to the ECMs transistor. Use a ground other than ECM terminals, such as the ground.
Terminal No. Wire color Item Condition Data (DC voltage)
1 L Throttle control motor (Open) [Ignition switch: ON] 
  • Engine stopped
  • Selector lever: D (A/T, CVT), 1st (M/T)
  • Accelerator pedal: Fully depressed
 Approximately 3.2 V(1)
G08275264Courtesy of NISSAN NORTH AMERICA, INC.
2 SB Throttle control motor power supply [Ignition switch: ON]  Battery voltage (11 - 14 V)
3 G A/F sensor 1 heater [Engine is running] 
  • Warm-up condition 
  • Idle speed

    (More than 140 seconds after starting engine)

 Approximately 2.9 - 8.8 V(1)
G08275265Courtesy of NISSAN NORTH AMERICA, INC.
4 P Throttle control motor (Close) [Ignition switch: ON] 
  • Engine stopped
  • Selector lever: D (A/T, CVT), 1st (M/T)
  • Accelerator pedal: Fully released
 Approximately 1.8 V(1)
G08275266Courtesy of NISSAN NORTH AMERICA, INC.
5 G Heated oxygen sensor 2 heater [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.
 Approximately 10 V(1)
G08275267Courtesy of NISSAN NORTH AMERICA, INC.
[Ignition switch: ON] 
  • Engine stopped

[Engine is running] 
  • Engine speed: Above 3, 600 rpm.
 Battery voltage (11 - 14 V)
9 P 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)(1)
G08275268Courtesy of NISSAN NORTH AMERICA, INC.
[Engine is running] 
  • Engine speed: About 2, 000 rpm (More than 100 seconds after starting engine)
 Approximately 10 V(1)
G08275269Courtesy of NISSAN NORTH AMERICA, INC.
10
11		 B
B		 ECM ground [Engine is running] 
  • Idle speed
 Body ground
13 L Tachometer signal [Engine is running] 
  • Warm-up condition 
  • Idle speed
NOTE: The pulse cycle changes depending on rpm at idle.
 3.0 - 5.0 V(1)
G08275270Courtesy of NISSAN NORTH AMERICA, INC.
[Engine is running] 
  • Warm-up condition 
  • Engine speed: 2, 000 rpm.
 3.0 - 5.0 V(1)
G08275271Courtesy of NISSAN NORTH AMERICA, INC.
15 Y Throttle control motor relay [Ignition switch: OFF]  Battery voltage (11 - 14 V)
[Ignition switch: ON]  0 - 1.0 V
17
18
21
22		 R
LG
G
SB		 Ignition signal No. 1
Ignition signal No. 2
Ignition signal No. 4
Ignition signal No. 3		 [Engine is running] 
  • Warm-up condition 
  • Idle speed
NOTE: The pulse cycle changes depending on rpm at idle.
 0 - 0.3 V(1)
G08275272Courtesy of NISSAN NORTH AMERICA, INC.
[Engine is running] 
  • Warm-up condition 
  • Engine speed: 2, 500 rpm.
 0.2 - 0.5 V(1)
G08275273Courtesy of NISSAN NORTH AMERICA, INC.
23 GR Fuel pump relay [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)
25
29
30
31		 V
Y
O
L		 Fuel injector No. 4
Fuel injector No. 3
Fuel injector No. 2
Fuel injector No. 1		 [Engine is running] 
  • Warm-up condition 
  • Idle speed
NOTE: The pulse cycle changes depending on rpm at idle.
 Battery voltage (11 - 14 V)(1)
G08275274Courtesy of NISSAN NORTH AMERICA, INC.
[Engine is running] 
  • Warm-up condition 
  • Engine speed: 2, 000 rpm
 Battery voltage (11 - 14 V)(1)
G08275275Courtesy of NISSAN NORTH AMERICA, INC.
28 W EVAP canister vent control valve [Ignition switch: ON]  Battery voltage (11 - 14 V)
32 P ECM relay (Self shut-off) [Engine is running] 
[Ignition switch: OFF] 
  • For 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)
33 LG Throttle position sensor 1 [Ignition switch: ON] 
  • Engine stopped
  • Selector lever: D (A/T, CVT), 1st (M/T)
  • Accelerator pedal: Fully released
 More than 0.36 V
[Ignition switch: ON] 
  • Engine stopped
  • Selector lever: D (A/T, CVT), 1st (M/T)
  • Accelerator pedal: Fully depressed
 Less than 4.75 V
34 O Throttle position sensor 2 [Ignition switch: ON] 
  • Engine stopped
  • Selector lever: D (A/T, CVT), 1st (M/T)
  • Accelerator pedal: Fully released
 Less than 4.75 V
[Ignition switch: ON] 
  • Engine stopped
  • Selector lever: D (A/T, CVT), 1st (M/T)
  • Accelerator pedal: Fully depressed
 More than 0.36 V
36 Y Sensor ground (Throttle position sensor) [Engine is running] 
  • Warm-up condition 
  • Idle speed
 Approximately 0 V
37 W Knock sensor [Engine is running] 
  • Idle speed
 Approximately 2.5 V
38 P Engine coolant temperature sensor [Engine is running]  Approximately 0 - 4.8 V Output voltage varies with engine coolant temperature.
40 - Sensor ground (Knock sensor) [Engine is running] 
  • Warm-up condition 
  • Idle speed
 Approximately 0 V
41 GR 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
42 V EVAP control system pressure sensor [Ignition switch: ON]  Approximately 1.8 - 4.8 V
43 P Fuel tank temperature sensor [Engine is running]  Approximately 0 - 4.8 V Output voltage varies with fuel tank temperature
44 B Sensor ground (Engine coolant temperature sensor) [Engine is running] 
  • Warm-up condition 
  • Idle speed
 Approximately 0 V
45 G Mass air flow sensor [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
46 V Intake air temperature sensor [Engine is running]  Approximately 0 - 4.8 V Output voltage varies with intake air temperature.
48 BR Sensor ground (Refrigerant pressure sensor) [Engine is running] 
  • Warm-up condition 
  • Idle speed
 Approximately 0 V
49 W A/F sensor 1 [Engine is running] 
  • Warm-up condition 
  • Engine speed: 2, 000 rpm
 Approximately 2.2 V Output voltage varies with air fuel ratio.
50 W Heated oxygen sensor 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
51 O Sensor ground (EVAP control system pressure sensor) [Engine is running] 
  • Warm-up condition 
  • Idle speed
 Approximately 0 V
52 LG Sensor ground (Mass air flow sensor) [Engine is running] 
  • Warm-up condition 
  • Idle speed
 Approximately 0 V
53 B A/F sensor 1 [Ignition switch: ON]  Approximately 2.2 V
55 O Sensor ground (Intake air temperature sensor) [Engine is running] 
  • Warm-up condition 
  • Idle speed
 Approximately 0 V
59 O Sensor ground (Heated oxygen sensor 2) [Engine is running] 
  • Warm-up condition 
  • Idle speed
 Approximately 0 V
61 W Crankshaft position sensor (POS) [Engine is running] 
  • Warm-up condition 
  • Idle speed
NOTE: The pulse cycle changes depending on rpm at idle.
 Approximately 4.0 V(1)
G08275276Courtesy of NISSAN NORTH AMERICA, INC.
[Engine is running] 
  • Engine speed: 2, 000 rpm
 Approximately 4.0 V(1)
G08275277Courtesy of NISSAN NORTH AMERICA, INC.
62 R Sensor ground [Crankshaft position sensor (POS)] [Engine is running] 
  • Warm-up condition 
  • Idle speed
 Approximately 0 V
63 BR Sensor ground [Camshaft position sensor (PHASE)] [Engine is running] 
  • Warm-up condition 
  • Idle speed
 Approximately 0 V
65 G Camshaft position sensor (PHASE) [Engine is running] 
  • Warm-up condition 
  • Idle speed
NOTE: The pulse cycle changes depending on rpm at idle.
 1.0 - 2.0 V(1)
G08275278Courtesy of NISSAN NORTH AMERICA, INC.
[Engine is running] 
  • Engine speed: 2, 000 rpm.
 1.0 - 2.0 V(1)
G08275279Courtesy of NISSAN NORTH AMERICA, INC.
69 L PNP signal [Ignition switch: ON] 
  • Selector lever: P or N (A/T, CVT), Neutral (M/T)
 Battery voltage (11 - 14 V)
[Ignition switch: ON] 
  • Except above
 Approximately 0 V
72 V Sensor power supply (Throttle position sensor) [Ignition switch: ON]  Approximately 5.0 V
73 P Intake valve timing control solenoid valve [Engine is running] 
  • Warm-up condition 
  • Idle speed
 Battery voltage (11 - 14 V)
[Engine is running] 
  • Warm-up condition 
  • When revving engine up to 2, 000 rpm quickly
 7.0 - 10 V(1)
G08275280Courtesy of NISSAN NORTH AMERICA, INC.
74 W Sensor power supply (Refrigerant pressure sensor) [Ignition switch: ON]  Approximately 5.0 V
75 BR Sensor power supply [Crankshaft position sensor (POS)] [Ignition switch: ON]  Approximately 5.0 V
76 W EVAP control system pressure sensor power supply [Ignition switch: ON]  Approximately 5.0 V
78 O Sensor power supply [Camshaft position sensor (PHASE)] [Ignition switch: ON]  Approximately 5.0 V
83 P CAN communication line - -
84 L CAN communication line - -
88 LG DATA link connector - -
93 O Ignition switch [Ignition switch: OFF]  0 V
[Ignition switch: ON]  Battery voltage (11 - 14 V)
94 R ASCD steering switch [Ignition switch: ON] 
ASCD steering switch: OFF		 Approximately 4.0 V
[Ignition switch: ON] 
  • MAIN switch: Pressed
 Approximately 0 V
[Ignition switch: ON] 
  • CANCEL switch: Pressed
 Approximately 1.0 V
[Ignition switch: ON] 
  • RESUME/ACCELERATE switch: Pressed
 Approximately 3.0 V
[Ignition switch: ON] 
  • SET/COAST switch: Pressed
 Approximately 2.0 V
95 B Sensor ground (ASCD steering switch) [Engine is running] 
  • Warm-up condition 
  • Idle speed
 Approximately 0 V
99 R 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)
100 G ASCD brake switch [Ignition switch: ON] 
  • Brake pedal: Slightly depressed (A/T, CVT)
  • Brake pedal and/or clutch pedal: Slightly depressed (M/T)
 Approximately 0 V
[Ignition switch: ON] 
  • Brake pedal: Fully released (A/T, CVT)
  • Brake pedal and clutch pedal: Fully released (M/T)
 Battery voltage (11 - 14 V)
102 SB Sensor power supply (Accelerator pedal position sensor 2) [Ignition switch: ON]  Approximately 5.0 V
103 GR Accelerator pedal position sensor 2 [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
104 Y Sensor ground (Accelerator pedal position sensor 2) [Engine is running] 
  • Warm-up condition 
  • Idle speed
 Approximately 0 V
105 G Power supply for ECM [Ignition switch: ON]  Battery voltage (11 - 14 V)
106 P Sensor power supply (Accelerator pedal position sensor 1) [Ignition switch: ON]  Approximately 5.0 V
108 B ECM ground [Engine is running] 
  • Idle speed
 Body ground
110 G Accelerator pedal position sensor 1 [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
111 R Sensor ground (Accelerator pedal position sensor 1) [Engine is running] 
  • Warm-up condition 
  • Idle speed
 Approximately 0 V
(1) Average voltage for pulse signal (Actual pulse signal can be confirmed by oscilloscope.)
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