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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-III.

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 INSPECTION CHART

TERMINAL NO. WIRE COLOR ITEM CONDITION DATA (DC Voltage)
1 W/R A/F sensor 1 heater (bank 1) [Engine is running] 
  • Warm-up condition 
  • Idle speed (More than 140 seconds after starting engine)
G04874861Courtesy of NISSAN NORTH AMERICA, INC.
2 G Throttle control motor (Open) (bank 1) [Ignition switch: ON] 
  • Engine stopped
  • Shift lever: D (A/T) or 1st (M/T)
  • Accelerator pedal: Fully depressed
G04874862Courtesy of NISSAN NORTH AMERICA, INC.
[Ignition switch: ON] 
  • Engine stopped
  • Shift lever: D (A/T) or 1st (M/T)
  • Accelerator pedal: Fully released
G04874863Courtesy of NISSAN NORTH AMERICA, INC.
3 R/W Throttle control motor relay power supply (bank 1) [Ignition switch: ON]  BATTERY VOLTAGE (11 - 14V)
4 BR Throttle control motor (Close) (bank 1) [Ignition switch: ON] 
  • Engine stopped
  • Shift lever: D (A/T) or 1st (M/T)
  • Accelerator pedal: In the middle of releasing operation
G04874864Courtesy of NISSAN NORTH AMERICA, INC.
5 GY/L A/F sensor 1 heater (bank 2) [Engine is running] 
  • Warm-up condition 
  • Idle speed (More than 140 seconds after starting engine)
G04874861Courtesy of NISSAN NORTH AMERICA, INC.
6 L/OR Exhaust valve timing control magnet retarder (bank 1) [Engine is running] 
  • Warm-up condition 
  • Idle speed
 BATTERY VOLTAGE (11 - 14 V)
[Engine is running] 
  • Warm-up condition 
  • Around 2, 500 RPM while the engine speed is rising
G04874866Courtesy of NISSAN NORTH AMERICA, INC.
7 Y/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 
  • Around 2, 500 RPM while the engine speed is rising
G04874866Courtesy of NISSAN NORTH AMERICA, INC.
8 B/P ECM ground [Engine is running] 
  • Idle speed
 Body ground
11
12
15
16
19
20		 GY
LG/R
PU
G/B
L/R
Y/B		 Ignition signal No. 4
Ignition signal No. 3
Ignition signal No. 5
Ignition signal No. 2
Ignition signal No. 6
Ignition signal No. 1		 [Engine is running] 
  • Warm-up condition 
  • Idle speed
NOTE: The pulse cycle changes depending on RPM at idle.
G04874868Courtesy of NISSAN NORTH AMERICA, INC.
[Engine is running] 
  • Warm-up condition 
  • Engine speed: 2, 000 RPM
G04874869Courtesy of NISSAN NORTH AMERICA, INC.
17 P 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.
G04874870Courtesy of NISSAN NORTH AMERICA, INC.
[Ignition switch: ON] 
  • Engine stopped

[Engine is running] 
  • Engine speed: Above 3, 600 RPM
 BATTERY VOLTAGE (11 - 14V)
18 W/G 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 
  • Engine speed: 2, 000 RPM
G04874871Courtesy of NISSAN NORTH AMERICA, INC.
21 GY/R EVAP canister purge volume control solenoid valve [Engine is running] 
  • Idle speed
  • Accelerator pedal: Not depressed even slightly, after engine starting.
 BATTERY VOLTAGE
G04874872Courtesy of NISSAN NORTH AMERICA, INC.
[Engine is running] 
  • Engine speed: About 2, 000 RPM (More than 100 seconds after starting engine)
 BATTERY VOLTAGE
G04874873Courtesy of NISSAN NORTH AMERICA, INC.
22 L/W 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)
24 BR/Y 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)
25 OR Throttle control motor relay [Ignition switch: OFF]  BATTERY VOLTAGE (11 - 14V)
[Ignition switch: ON]  0 - 1.0V
29 G/W 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 
  • Engine speed: 2, 000 RPM
G04874871Courtesy of NISSAN NORTH AMERICA, INC.
30 Y Throttle position sensor 1 (bank 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
31 L/G Throttle position sensor 1 (bank 2) [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
33 PU/W 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.
G04874870Courtesy of NISSAN NORTH AMERICA, INC.
[Ignition switch: ON] 
  • Engine stopped

[Engine is running] 
  • Engine speed: Above 3, 600 RPM
 BATTERY VOLTAGE (11 - 14V)
34 L Throttle position sensor 2 (bank 1) [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
35 L/Y Throttle position sensor 2 (bank 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
37 LG/B Crankshaft position sensor (POS) [Engine is running] 
  • Warm-up condition 
  • Idle speed
NOTE: The pulse cycle changes depending on RPM at idle.
G04874876Courtesy of NISSAN NORTH AMERICA, INC.
[Engine is running] 
  • Engine speed: 2, 000 RPM
G04874877Courtesy of NISSAN NORTH AMERICA, INC.
40 R Sensor ground [Throttle position sensor (bank 1)] [Engine is running] 
  • Warm-up condition 
  • Idle speed
 0V
43 OR/L Sensor power supply
[Throttle position sensor (bank 2)]		 [Ignition switch: ON]  5V
44 B Sensor power supply
[Throttle position sensor (bank 1)]		 [Ignition switch: ON]  5V
46 R/B Sensor power supply
[Crankshaft position sensor (POS)]		 [Ignition switch: ON]  5V
47 Y/G Sensor ground
[Crankshaft position sensor (POS)]		 [Engine is running] 
  • Warm-up condition 
  • Idle speed
 0V
48 W/L Sensor ground
[Throttle position sensor (bank 2)]		 [Engine is running] 
  • Warm-up condition 
  • Idle speed
 0V
49 L/B Throttle control motor
(Close) (bank 2)		 [Ignition switch: ON] 
  • Engine stopped
  • Shift lever: D (A/T) or 1st (M/T)
  • Accelerator pedal: In the middle of releasing operation
G04874864Courtesy of NISSAN NORTH AMERICA, INC.
50 PU/W Throttle control motor (Open) (bank 2) [Ignition switch: ON] 
  • Engine stopped
  • Shift lever: D (A/T) or 1st (M/T)
  • Accelerator pedal: Fully depressed
G04874862Courtesy of NISSAN NORTH AMERICA, INC.
[Ignition switch: ON] 
  • Engine stopped
  • Shift lever: D (A/T) or 1st (M/T)
  • Accelerator pedal: Fully released
G04874863Courtesy of NISSAN NORTH AMERICA, INC.
52 R/W Throttle control motor relay power supply (bank 2) [Ignition switch: ON]  BATTERY VOLTAGE (11 - 14V)
53 P/L Ignition switch [Ignition switch: OFF]  0V
[Ignition switch: ON]  BATTERY VOLTAGE (11 - 14V)
57 L A/F sensor 1 (bank 1) [Ignition switch: ON]  2.2V
58 Y/G Exhaust valve timing control position sensor (bank 1) [Engine is running] 
  • Warm-up condition 
  • Idle speed
NOTE: The pulse cycle changes depending on RPM at idle.
G04874881Courtesy of NISSAN NORTH AMERICA, INC.
[Engine is running] 
  • Warm-up condition 
  • Engine speed: 2, 000 RPM
G04874882Courtesy of NISSAN NORTH AMERICA, INC.
59 BR/Y Camshaft position sensor (PHASE) (bank 1) [Engine is running] 
  • Warm-up condition 
  • Idle speed
NOTE: The pulse cycle changes depending on RPM at idle.
G04874883Courtesy of NISSAN NORTH AMERICA, INC.
[Engine is running] 
  • Engine speed: 2, 000 RPM
G04874884Courtesy of NISSAN NORTH AMERICA, INC.
60 R/L Sensor power supply
[Camshaft position sensor (PHASE) (bank 1), Exhaust valve timing control position sensor (bank 1), Power steering pressure sensor]		 [Ignition switch: ON]  5V
61 R A/F sensor 1 (bank 1) [Ignition switch: ON] 
  • Warm-up condition 
  • Engine speed: 2, 000 RPM
 1.8V
Output voltage varies with air fuel ratio.
62 B/Y Exhaust valve timing control position sensor (bank 2) [Engine is running] 
  • Warm-up condition 
  • Idle speed
NOTE: The pulse cycle changes depending on RPM at idle.
G04874881Courtesy of NISSAN NORTH AMERICA, INC.
[Engine is running] 
  • Warm-up condition 
  • Engine speed: 2, 000 RPM
G04874882Courtesy of NISSAN NORTH AMERICA, INC.
63 SB Camshaft position sensor (PHASE) (bank 2) [Engine is running] 
  • Warm-up condition 
  • Idle speed
NOTE: The pulse cycle changes depending on RPM at idle.
G04874883Courtesy of NISSAN NORTH AMERICA, INC.
[Engine is running] 
  • Engine speed: 2, 000 RPM
G04874884Courtesy of NISSAN NORTH AMERICA, INC.
64 W/G Sensor power supply
[Camshaft position sensor (PHASE) (bank 2), Exhaust valve timing control position sensor (bank 2)]		 [Ignition switch: ON]  5V
65 PU A/F sensor 1 (bank 2) [Ignition switch: ON]  2.2V
66 LG A/F sensor 1 (bank 2) [Ignition switch: ON] 
  • Warm-up condition 
  • Engine speed: 2, 000 RPM
 1.8V
Output voltage varies with air fuel ratio.
67 W/L Intake air temperature sensor (bank 1) [Engine is running]  0 - 4.8V
Output voltage varies with intake air temperature.
68 B Sensor ground
[Mass air flow sensor (bank1), Intake air temperature sensor (bank 1)]		 [Engine is running] 
  • Warm-up condition 
  • Idle speed
 0V
69 W Knock sensor (bank 2) [Engine is running] 
  • Idle speed
 2.5V(1)
71 Y/B Engine coolant temperature sensor [Engine is running]  0 - 4.8V
Output voltage varies with engine coolant temperature.
72 - Sensor ground
[Knock sensor (bank 1), Knock sensor (bank 2)]		 [Engine is running] 
  • Warm-up condition 
  • Idle speed
 Approximately 0V
73 W Knock sensor (bank 1) [Engine is running] 
  • Idle speed
 2.5V(1)
76 W/R 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 - 1.0V
77 L/W Mass air flow sensor (bank1) [Engine is running] 
  • Warm-up condition 
  • Idle speed
 0.8 - 1.1V
[Engine is running] 
  • Warm-up condition 
  • Engine speed: 2, 500 RPM
 1.4 - 1.7V
78 G/W Engine oil temperature sensor [Engine is running]  0 - 4.8V
Output voltage varies with engine oil temperature.
79 GY/R Mass air flow sensor (bank2) [Engine is running] 
  • Warm-up condition 
  • Idle speed
 0.8 - 1.1V
[Engine is running] 
  • Warm-up condition 
  • Engine speed: 2, 500 RPM
 1.4 - 1.7V
80 R/Y 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 - 1.0V
81
82
85
86
89
90		 R/B
L/R
BR
W/B
G/Y
Y/R		 Fuel injector No. 3
Fuel injector No. 6
Fuel injector No. 2
Fuel injector No. 5
Fuel injector No. 1
Fuel injector No. 4		 [Engine is running] 
  • Warm-up condition 
  • Idle speed
NOTE: The pulse cycle changes depending on RPM at idle.
 BATTERY VOLTAGE
G04874889Courtesy of NISSAN NORTH AMERICA, INC.
[Engine is running] 
  • Warm-up condition 
  • Engine speed: 2, 000 RPM
 BATTERY VOLTAGE
G04874890Courtesy of NISSAN NORTH AMERICA, INC.
83 G Intake air temperature sensor (bank 2) [Engine is running]  0 - 4.8V
Output voltage varies with intake air temperature.
84 G Sensor ground
(Heated oxygen sensor 2, Engine coolant temperature sensor, Engine oil temperature sensor)		 [Engine is running] 
  • Warm-up condition 
  • Idle speed
 0V
87 Y 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
88 LG/B Sensor ground
[Exhaust valve timing control position sensor (bank 1), Exhaust valve timing control position sensor (bank 2)]		 [Engine is running] 
  • Warm-up condition 
  • Idle speed
 0V
92 B/P Sensor ground
[Camshaft position sensor (PHASE) (bank 2)]		 [Engine is running] 
  • Warm-up condition 
  • Idle speed
 0V
93 P Power supply for ECM (Back-up) [Ignition switch: OFF]  BATTERY VOLTAGE (11 - 14V)
94 L/Y Sensor ground
[Mass air flow sensor (bank 2)]		 [Engine is running] 
  • Warm-up condition 
  • Idle speed
 0V
96 P/L Sensor ground
[Camshaft position sensor (PHASE) (bank 1), Power steering pressure sensor]		 [Engine is running] 
  • Warm-up condition 
  • Idle speed
 0V
97 R 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
98 SB Accelerator pedal position sensor 2 [Ignition switch: ON] 
  • Engine stopped
  • Accelerator pedal: Fully released
 1.95 - 2.40V
[Ignition switch: ON] 
  • Engine stopped
  • Accelerator pedal: Fully depressed
 2.0 - 2.5V
99 L Sensor power supply
(Accelerator pedal position sensor 1)		 [Ignition switch: ON]  5V
100 W Sensor ground
(Accelerator pedal position sensor 1)		 [Engine is running] 
  • Warm-up condition 
  • Idle speed
 0V
101 G/Y ASCD steering switch [Ignition switch: ON] 
  • ASCD steering switch: OFF
 4V
[Ignition switch: ON] 
  • MAIN switch: Pressed
 0V
[Ignition switch: ON] 
  • CANCEL switch: Pressed
 1V
[Ignition switch: ON] 
  • RESUME/ACCELERATE switch: Pressed
 3V
[Ignition switch: ON] 
  • SET/COAST switch: Pressed
 2V
102 LG EVAP control system pressure sensor [Ignition switch: ON]  1.8 - 4.8V
103 G Sensor power supply
(Accelerator pedal position sensor 2)		 [Ignition switch: ON]  5V
104 GY Sensor ground
(Accelerator pedal position sensor 2)		 [Engine is running] 
  • Warm-up condition 
  • Idle speed
 0V
105 L Refrigerant pressure sensor [Engine is running] 
  • Warm-up condition 
  • Both A/C switch and blower switch: ON (Compressor operates.)
 1.0 - 4.0V
106 W Fuel tank temperature sensor [Engine is running]  0 - 4.8V
Output voltage varies with fuel tank temperature.
107 BR Sensor power supply
(EVAP control system pressure sensor)		 [Ignition switch: ON]  5V
108 B/Y Sensor ground
(ASCD steering switch)		 [Engine is running] 
  • Warm-up condition 
  • Idle speed
 0V
109 BR PNP switch [Ignition switch: ON] 
  • Shift lever: P or N (A/T), Neutral (M/T) position
 BATTERY VOLTAGE (11 - 14V)
[Ignition switch: ON] 
  • Shift lever: Except above position
 0V
110 Y Engine speed output signal [Engine is running] 
  • Warm-up condition 
  • Idle speed
NOTE: The pulse cycle changes depending on RPM at idle
G04874891Courtesy of NISSAN NORTH AMERICA, INC.
[Engine is running] 
  • Engine speed: 2, 000 RPM
G04874892Courtesy of NISSAN NORTH AMERICA, INC.
111 OR Sensor power supply
(Refrigerant pressure sensor)		 [Ignition switch: ON]  5V
112 PU Sensor ground
(EVAP control system pressure sensor)		 [Engine is running] 
  • Warm-up condition 
  • Idle speed
 0V
113 P CAN communication line - -
114 L CAN communication line - -
116 W Sensor ground
(Refrigerant pressure sensor)		 [Engine is running] 
  • Warm-up condition 
  • Idle speed
 0V
117 PU Data link connector [Ignition switch: ON] 
  • GST: Disconnected
 5V - Battery voltage (11 - 14V)
121 LG EVAP canister vent control valve [Ignition switch: ON]  BATTERY VOLTAGE (11 - 14V)
122 P/L Stop lamp switch [Ignition switch: OFF] 
  • Brake pedal: Fully released
 0V
[Ignition switch: OFF] 
  • Brake pedal: Slightly depressed
 BATTERY VOLTAGE (11 - 14V)
123
124		 B/W
B/R		 ECM ground [Engine is running] 
  • Idle speed
 Body ground
125 R Power supply for ECM [Ignition switch: ON]  BATTERY VOLTAGE (11 - 14V)
126 L/OR ASCD brake switch [Ignition switch: ON] 
  • Brake pedal: Slightly depressed (A/T)
  • Brake pedal and/or clutch pedal: Slightly depressed (M/T)
 0V
[Ignition switch: ON] 
  • Brake pedal: Fully released (A/T)
  • Brake pedal and clutch pedal: Fully released (M/T)
 BATTERY VOLTAGE (11 - 14V)
127
128		 B
B		 ECM ground [Engine is running] 
  • Idle speed
 Body ground
*: Average voltage for pulse signal (Actual pulse signal can be confirmed by oscilloscope.)
(1) This may vary depending on internal resistance of the tester.
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