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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-II.

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.
ECM CONNECTOR TERMINAL VOLTAGE SPECIFICATIONS

TERMINAL NO. WIRE COLOR ITEM CONDITION DATA (DC Voltage)
1 B ECM ground [Engine is running] 
  • Idle speed
 Body ground
2 L A/F sensor 1 heater (bank 1) [Engine is running] 
  • Warm-up condition 
  • Idle speed
 Approximately 5V(2)
G04080403Courtesy of NISSAN NORTH AMERICA, INC.
3 G Throttle control motor relay power supply [Ignition switch: ON]  BATTERY VOLTAGE (11 - 14V)
4 R/L Throttle control motor (Close) [Ignition switch: ON] 
  • Engine stopped
  • Shift lever: D (A/T) or 1st (M/T)
  • Accelerator pedal: Fully released
 0 - 14V(2)
G04074579Courtesy of NISSAN NORTH AMERICA, INC.
5 CR/L Throttle control motor (Open) [Ignition switch: ON] 
  • Engine stopped
  • Shift lever: D (A/T) or 1st (M/T)
  • Accelerator pedal: Fully depressed
 0 - 14V(2)
G04074580Courtesy of NISSAN NORTH AMERICA, INC.
6 P/L Heated oxygen sensor 2 heater (bank 2) [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 - 1.0V
[Ignition switch: ON] 
  • Engine stopped

[Engine is running] 
  • Engine speed: Above 3, 600 RPM
 BATTERY VOLTAGE (11 - 14V)
8(2) G/R Exhaust valve timing control magnet retarder (bank 2) [Engine is running] 
  • Warm-up condition 
  • Idle speed
 BATTERY VOLTAGE (11 - 14V)
[Engine is running] 
  • Warm-up condition 
  • Engine speed: Above 1, 500 RPM
 7 - 12V(2)
G04074581Courtesy of NISSAN NORTH AMERICA, INC.
9(2) SB Exhaust valve timing control magnet retarder (bank 1) [Engine is running] 
  • Warm-up condition 
  • Idle speed
 BATTERY VOLTAGE (11 - 14V)
[Engine is running] 
  • Warm-up condition 
  • Engine speed: Above 1, 500 RPM
 7 - 12V(2)
G04074581Courtesy of NISSAN NORTH AMERICA, INC.
10 W/G Intake valve timing control solenoid valve (bank 2) [Engine is running] 
  • Warm-up condition 
  • Idle speed
 BATTERY VOLTAGE (11 - 14V)
[Engine is running] 
  • Warm-up condition 
  • When revving engine up to 2, 000 RPM quickly
 7 - 12V(2)
G04074581Courtesy of NISSAN NORTH AMERICA, INC.
11 G/B Intake valve timing control solenoid valve (bank 1) [Engine is running] 
  • Warm-up condition 
  • Idle speed
 BATTERY VOLTAGE (11 - 14V)
[Engine is running] 
  • Warm-up condition 
  • When revving engine up to 2, 000 RPM quickly
 7 - 12V(2)
G04074581Courtesy of NISSAN NORTH AMERICA, INC.
12 L/W Power steering pressure sensor [Engine is running] 
  • Steering wheel: Being turned
 0.5 - 4.5V
[Engine is running] 
  • Steering wheel: Not being turned
 0.4 - 0.8V
13 W/L Crankshaft position sensor (POS) [Engine is running] 
  • Warm-up condition 
  • Idle speed
    NOTE: The pulse cycle changes depending on RPM at idle.
 Approximately 1.6V(2)
G04074583Courtesy of NISSAN NORTH AMERICA, INC.
[Engine is running] 
  • Engine speed: 2, 000 RPM
 Approximately 1.4V(2)
G04074584Courtesy of NISSAN NORTH AMERICA, INC.
14 R/G Camshaft position sensor (PHASE) (bank 2) [Engine is running] 
  • Warm-up condition 
  • Idle speed
    NOTE: The pulse cycle changes depending on RPM at idle.
 1.0 - 4.0V(2)
G04080412Courtesy of NISSAN NORTH AMERICA, INC.
[Engine is running] 
  • Engine speed: 2, 000 RPM
 1.0 - 4.0V(2)
G04074586Courtesy of NISSAN NORTH AMERICA, INC.
15 W Knock sensor [Engine is running] 
  • Idle speed
 Approximately 2.5V
16 LG A/F sensor 1 (bank 1) [Engine is running] 
  • Warm-up condition 
  • Idle speed
 Approximately 3.1V
35 Y/B Approximately 2.6V
56 W/L Approximately 2.3V
75 P/B Approximately 2.3V
21
22
23		 SB
R/Y
R/B		 Fuel injector No. 5
Fuel injector No. 3
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 - 14V)(2)
G04080414Courtesy of NISSAN NORTH AMERICA, INC.
[Engine is running] 
  • Warm-up condition 
  • Engine speed: 2, 000 RPM
 BATTERY VOLTAGE (11 - 14V)(2)
G04173127Courtesy of NISSAN NORTH AMERICA, INC.
24 L/Y A/F sensor 1 heater (bank 2) [Engine is running] 
  • Warm-up condition 
  • Idle speed
 Approximately 5V(2)
G04080403Courtesy of NISSAN NORTH AMERICA, INC.
25 P/B Heated oxygen sensor 2 heater (bank 1) [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 - 1.0V
[Ignition switch: ON] 
  • Engine stopped

[Engine is running] 
  • Engine speed: Above 3, 600 RPM
 BATTERY VOLTAGE (11 - 14V)
32 BR/W EVAP control system pressure sensor [Ignition switch: ON]  Approximately 1.8 - 4.8V
33 R/L Camshaft position sensor (PHASE) (bank 1) [Engine is running] 
  • Warm-up condition 
  • Idle speed
    NOTE: The pulse cycle changes depending on RPM at idle.
 1.0 - 4.0V(2)
G04080417Courtesy of NISSAN NORTH AMERICA, INC.
[Engine is running] 
  • Engine speed: 2, 000 RPM
 1.0 - 4.0V(2)
G04074586Courtesy of NISSAN NORTH AMERICA, INC.
34 Y/G Intake air temperature sensor [Engine is running]  Approximately 0 - 4.8V
Output voltage varies with intake air temperature.
40
41
42		 LG/B
W/L
B/R		 Fuel injector No. 6
Fuel injector No. 4
Fuel injector No. 2		 [Engine is running] 
  • Warm-up condition 
  • Idle speed
    NOTE: The pulse cycle changes depending on RPM at idle.
 BATTERY VOLTAGE (11 - 14V)(2)
G04080414Courtesy of NISSAN NORTH AMERICA, INC.
[Engine is running] 
  • Warm-up condition 
  • Engine speed: 2, 000 RPM
 BATTERY VOLTAGE (11 - 14V)(2)
G04173127Courtesy of NISSAN NORTH AMERICA, INC.
45 G/W EVAP canister purge volume control solenoid valve [Engine is running] 
  • Idle speed
  • Accelerator pedal: Not depressed even slightly, after engine starting.
 BATTERY VOLTAGE (11 - 14V)(2)
G04179935Courtesy of NISSAN NORTH AMERICA, INC.
[Engine is running] 
  • Engine speed: About 2, 000 RPM (More than 100 seconds after starting engine)
 BATTERY VOLTAGE (11 - 14V)(2)
G04074109Courtesy of NISSAN NORTH AMERICA, INC.
47 W/R Sensor power supply (Throttle position sensor) [Ignition switch: ON]  Approximately 5V
48 PU Sensor power supply (EVAP control system pressure sensor) [Ignition switch: ON]  Approximately 5V
49 B/Y Sensor power supply (Refrigerant pressure sensor) [Ignition switch: ON]  Approximately 5V
50 G Throttle position sensor 1 [Ignition switch: ON] 
  • Engine stopped
  • Shift lever: D (A/T) or 1st (M/T)
  • Accelerator pedal: Fully released
 More than 0.36V
[Ignition switch: ON] 
  • Engine stopped
  • Shift lever: D (A/T) or 1st (M/T)
  • Accelerator pedal: Fully depressed
 Less than 4.75V
51 G/Y Mass air flow sensor [Engine is running] 
  • Warm-up condition 
  • Idle speed
 0.9 - 1.2V
[Engine is running] 
  • Warm-up condition 
  • Engine speed: 2, 500 RPM
 1.5 - 1.9V
53(2) L Exhaust valve timing control position sensor (bank 1) [Engine is running] 
  • Idle speed
    NOTE: The pulse cycle changes depending on RPM at idle.
 0 - 1.0V(2)
G04080423Courtesy of NISSAN NORTH AMERICA, INC.
[Engine is running] 
  • Engine speed: 2, 000 RPM
 0 - 1.0V(2)
G04080424Courtesy of NISSAN NORTH AMERICA, INC.
55 L/B 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 1.0V
57 G A/F sensor 1 (bank 2) [Engine is running] 
  • Warm-up condition 
  • Idle speed
 Approximately 2.6V
58 W Approximately 2.3V
76 Y Approximately 3.1V
77 P Approximately 2.3V
60
61
62		 PU/W
L/R
Y/R		 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 - 0.2V(2)
G04073752Courtesy of NISSAN NORTH AMERICA, INC.
[Engine is running] 
  • Warm-up condition 
  • Engine speed: 2, 500 RPM
 0.1 - 0.4V(2)
G04160879Courtesy of NISSAN NORTH AMERICA, INC.
66 L Sensor ground (Throttle position sensor) [Engine is running] 
  • Warm-up condition 
  • Idle speed
 Approximately 0V
67 B/W Sensor ground [Engine is running] 
  • Warm-up condition 
  • Idle speed
 Approximately 0V
68 R/W Sensor power supply (Power steering pressure sensor) [Ignition switch: ON]  Approximately 5V
69 Y Throttle position sensor 2 [Ignition switch: ON] 
  • Engine stopped
  • Shift lever: D (A/T) or 1st (M/T)
  • Accelerator pedal: Fully released
 Less than 4.75V
[Ignition switch: ON] 
  • Engine stopped
  • Shift lever: D (A/T) or 1st (M/T)
  • Accelerator pedal: Fully depressed
 More than 0.36V
70 W Refrigerant pressure sensor [Engine is running] 
  • Warm-up condition 
  • Both A/C switch and blower switch: ON (Compressor operates.)
 1.0 - 4.0V
72(2) R/G Exhaust valve timing control position sensor (bank 2) [Engine is running] 
  • Idle speed
    NOTE: The pulse cycle changes depending on RPM at idle.
 0 - 1.0V(2)
G04080427Courtesy of NISSAN NORTH AMERICA, INC.
[Engine is running] 
  • Engine speed: 2, 000 RPM
 0 - 1.0V(2)
G04080428Courtesy of NISSAN NORTH AMERICA, INC.
73 BR/Y Engine coolant temperature sensor [Engine is running]  Approximately 0 - 4.8V Output voltage varies with engine coolant temperature.
74 OR 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 1.0V
78 B/Y Sensor ground (Heated oxygen sensor) [Engine is running] 
  • Warm-up condition 
  • Idle speed
 Approximately 0V
79
80
81		 GY/R
GY
BR		 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 - 0.2V(2)
G04073752Courtesy of NISSAN NORTH AMERICA, INC.
[Engine is running] 
  • Warm-up condition 
  • Engine speed: 2, 500 RPM
 0.1 - 0.4V(2)
G04160879Courtesy of NISSAN NORTH AMERICA, INC.
82 Y Sensor ground (Accelerator pedal position sensor 1) [Engine is running] 
  • Warm-up condition 
  • Idle speed
 Approximately 0V
83 R/G Sensor ground (Accelerator pedal position sensor 2) [Engine is running] 
  • Warm-up condition 
  • Idle speed
 Approximately 0V
85 PU/W Data link connector [Ignition switch: ON] 
  • CONSULT-II or GST: Disconnected
 Approximately 5V - Battery voltage (11 - 14V)
86 P CAN communication line [Ignition switch: ON]  Approximately 1.1 - 2.3V Output voltage varies with the communication status.
90 L Sensor power supply (Accelerator pedal position sensor 1) [Ignition switch: ON]  Approximately 5V
91 B/OR Sensor power supply (Accelerator pedal position sensor 2) [Ignition switch: ON]  Approximately 5V
94 L CAN communication line [Ignition switch: ON]  Approximately 2.6 - 3.2V Output voltage varies with the communication status.
98 R/Y Accelerator pedal position sensor 2 [Ignition switch: ON] 
  • Engine stopped
  • Accelerator pedal: Fully released
 0.15 - 0.60V
[Ignition switch: ON] 
  • Engine stopped
  • Accelerator pedal: Fully depressed
 1.95 - 2.40V
99 G/Y ASCD steering switch [Ignition switch: ON] 
  • ASCD steering switch: OFF
 Approximately 4V
[Ignition switch: ON] 
  • MAIN switch: Pressed
 Approximately 0V
[Ignition switch: ON] 
  • CANCEL switch: Pressed
 Approximately 1V
[Ignition switch: ON] 
  • RESUME/ACCELERATE switch: Pressed
 Approximately 3V
[Ignition switch: ON] 
  • SET/COAST switch: Pressed
 Approximately 2V
101 L/OR Stop lamp switch [Ignition switch: OFF] 
  • Brake pedal: Fully released
 Approximately 0V
[Ignition switch: OFF] 
  • Brake pedal: Slightly depressed
 BATTERY VOLTAGE (11 - 14V)
102 BR/Y PNP switch [Ignition switch: ON] 
  • Shift lever: P or N (A/T), Neutral (M/T)
 Approximately 0V
[Ignition switch: ON] 
  • Except above position
 BATTERY VOLTAGE (11 - 14V)
104 SB Throttle control motor relay [Ignition switch: OFF]  BATTERY VOLTAGE (11 - 14V)
[Ignition switch: ON]  0 - 1.0V
106 B/W Accelerator pedal position sensor 1 [Ignition switch: ON] 
  • Engine stopped
  • Accelerator pedal: Fully released
 0.5 - 1.0V
[Ignition switch: ON] 
  • Engine stopped
  • Accelerator pedal: Fully depressed
 3.9 - 4.7V
107 GY/R Fuel tank temperature sensor [Engine is running]  Approximately 0 - 4.8V Output voltage varies with fuel tank temperature.
108 B/R ASCD brake switch [Ignition switch: ON] 
  • Brake pedal: Slightly depressed (A/T)
  • Brake pedal and/or clutch pedal: Slightly depressed (M/T)
 Approximately 0V
[Ignition switch: ON] 
  • Brake pedal: Fully released (A/T)
  • Brake pedal and clutch pedal: Fully released (M/T)
 BATTERY VOLTAGE (11 - 14V)
109 W/B Ignition switch [Ignition switch: OFF]  0V
[Ignition switch: ON]  BATTERY VOLTAGE (11 - 14V)
111 GY/L ECM relay (Self shut-off) [Engine is running] 
[Ignition switch: OFF] 
  • For a few seconds after turning ignition switch OFF
 0 - 1.5V
[Ignition switch: OFF] 
  • More than a few seconds after turning ignition switch OFF
 BATTERY VOLTAGE (11 - 14V)
113 LG/B Fuel pump relay [Ignition switch: ON] 
  • For 1 second after turning ignition switch ON

[Engine is running] 		 0 - 1.5V
[Ignition switch: ON] 
  • More than 1 second after turning ignition switch ON.
 BATTERY VOLTAGE (11 - 14V)
115
116		 B/Y
B/R		 ECM ground [Engine is running] 
  • Idle speed
 Body ground
117 G/W EVAP canister vent control valve [Ignition switch: ON]  BATTERY VOLTAGE (11 - 14V)
119
120		 P
W		 Power supply for ECM [Ignition switch: ON]  BATTERY VOLTAGE (11 - 14V)
121 R/W Power supply for ECM (Back-up) [Ignition switch: OFF]  BATTERY VOLTAGE (11 - 14V)
(1) For models with M/T.
(2) Average voltage for pulse signal (Actual pulse signal can be confirmed by oscilloscope.)
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