LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Nissan-Datsun >> 2009 >> 350Z Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - Introduction >> Service Information >> Trouble Diagnosis >> ECM Terminal and Reference Value >> ECM Inspection Table
April 5, 2026: LEMON Manuals is launched! Read the announcement.

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.
TERMINAL VOLTAGE 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)
 2.9 - 8.8V(1)
G06054691Courtesy of NISSAN MOTOR CO., U.S.A.
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
 0 - 14V(1)
G06054692Courtesy of NISSAN MOTOR CO., U.S.A.
[Ignition switch: ON] 
  • Engine stopped
  • Shift lever: D (A/T) or 1st (M/T)
  • Accelerator pedal: Fully released
 0 - 14V(1)
G06054693Courtesy of NISSAN MOTOR CO., U.S.A.
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
 0 - 14V(1)
G06054694Courtesy of NISSAN MOTOR CO., U.S.A.
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)
 2.9 - 8.8(1)
G06054695Courtesy of NISSAN MOTOR CO., U.S.A.
6 L/OR 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 
  • Around 2, 500 RPM while the engine speed is rising
 7 - 12V(1)
G04874919Courtesy of NISSAN MOTOR CO., U.S.A.
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
 7 - 12V(1)
G04874919Courtesy of NISSAN MOTOR CO., U.S.A.
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.
 0 - 0.2V(1)
G06054698Courtesy of NISSAN MOTOR CO., U.S.A.
[Engine is running] 
  • Warm-up condition 
  • Engine speed: 2, 000 RPM
 0.1 - 0.4V(1)
G06054698Courtesy of NISSAN MOTOR CO., U.S.A.
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.
 0 - 14V(1)
G06054700Courtesy of NISSAN MOTOR CO., U.S.A.
[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
 7 - 12V(1)
G06054701Courtesy of NISSAN MOTOR CO., U.S.A.
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 (11 - 14V)(1)
G06054702Courtesy of NISSAN MOTOR CO., U.S.A.
[Engine is running] 
  • Engine speed: About 2, 000 RPM (More than 100 seconds after starting engine)
 BATTERY VOLTAGE (11 - 14V)(1)
G06054703Courtesy of NISSAN MOTOR CO., U.S.A.
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
 7 - 12V(1)
G06054701Courtesy of NISSAN MOTOR CO., U.S.A.
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.
 0 - 14V(1)
G06054700Courtesy of NISSAN MOTOR CO., U.S.A.
[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.
 4.0 - 5.0V(1)
G06055015Courtesy of NISSAN MOTOR CO., U.S.A.
[Engine is running] 
  • Engine speed: 2, 000 RPM
 4.0 - 5.0V(1)
G06055016Courtesy of NISSAN MOTOR CO., U.S.A.
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
 0 - 14V(1)
G06054694Courtesy of NISSAN MOTOR CO., U.S.A.
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
 0 - 14V(1)
G06054692Courtesy of NISSAN MOTOR CO., U.S.A.
[Ignition switch: ON] 
  • Engine stopped
  • Shift lever: D (A/T) or 1st (M/T)
  • Accelerator pedal: Fully released
 0 - 14V(1)
G06054693Courtesy of NISSAN MOTOR CO., U.S.A.
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.
 4.0 - 5.0V(1)
G06054711Courtesy of NISSAN MOTOR CO., U.S.A.
[Engine is running] 
  • Warm-up condition 
  • Engine speed: 2, 000 RPM
 4.0 - 5.0V(1)
G06054712Courtesy of NISSAN MOTOR CO., U.S.A.
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.
 3.0 - 5.0V(1)
G06055026Courtesy of NISSAN MOTOR CO., U.S.A.
[Engine is running] 
  • Engine speed: 2, 000 RPM
 3.0 - 5.0V(1)
G06055027Courtesy of NISSAN MOTOR CO., U.S.A.
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.
 4.0 - 5.0V(1)
G06054711Courtesy of NISSAN MOTOR CO., U.S.A.
[Engine is running] 
  • Warm-up condition 
  • Engine speed: 2, 000 RPM
 4.0 - 5.0V(1)
G06054712Courtesy of NISSAN MOTOR CO., U.S.A.
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.
 3.0 - 5.0V(1)
G06055026Courtesy of NISSAN MOTOR CO., U.S.A.
[Engine is running] 
  • Engine speed: 2, 000 RPM
 1.0 - 4.0V(1)
G06055026Courtesy of NISSAN MOTOR CO., U.S.A.
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 (bank 1), 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(2)
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(2)
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 (bank 1) [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 (bank 2) [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 (11 - 14V)(1)
G06054719Courtesy of NISSAN MOTOR CO., U.S.A.
[Engine is running] 
  • Warm-up condition 
  • Engine speed: 2, 000 RPM
 BATTERY VOLTAGE (11 - 14V)(1)
G06054720Courtesy of NISSAN MOTOR CO., U.S.A.
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 Transmission range switch (A/T)
Park/neutral position switch (M/T)		 [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
 1V(1)
G06054721Courtesy of NISSAN MOTOR CO., U.S.A.
[Engine is running] 
  • Engine speed: 2, 000 RPM
 1V(1)
G06054722Courtesy of NISSAN MOTOR CO., U.S.A.
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
(1) Average voltage for pulse signal (Actual pulse signal can be confirmed by oscilloscope.)
(2) This may vary depending on internal resistance of the tester.
scientia non olet · About LEMON Manuals