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ECM Inspection Table

WARNING: This page is about a different car, the 2010 Infiniti M45. However, it is still accessible from the selected car via links, so may be relevant.

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

Pulse signal is measured by CONSULT-III.

CAUTION: Never 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.
CONNECTOR TERMINALS REFERENCE CHART

TERMINAL NO. WIRE COLOR ITEM CONDITION DATA (DC Voltage)
1 B ECM ground [Engine is running] 
  • Idle speed
 Body ground
2 SB A/F sensor 1 heater (bank 1) [Engine is running] 
  • Warm-up condition 
  • Idle speed
 Approximately 5 V(1)
G04894534Courtesy of NISSAN MOTOR CO., U.S.A.
3 R Throttle control motor power supply [Ignition switch: ON]  BATTERY VOLTAGE (11 - 14 V)
4 W Throttle control motor (Close) [Ignition switch: ON] 
  • Engine: Stopped
  • Selector lever: D position
  • Accelerator pedal: Released
 0 - 14 V(1)
G04897294Courtesy of NISSAN MOTOR CO., U.S.A.
5 B Throttle control motor (Open) [Ignition switch: ON] 
  • Engine: Stopped
  • Selector lever: D position
  • Accelerator pedal: Fully depressed
 0 - 14 V(1)
G04897295Courtesy of NISSAN MOTOR CO., U.S.A.
6 R/L 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 - 1.0 V
[Ignition switch: ON] 
  • Engine: Stopped
[Engine is running] 
  • Engine speed: Above 3, 600 RPM
 BATTERY VOLTAGE (11 - 14 V)
10 W/G Intake valve timing control solenoid valve (bank 1) [Engine is running] 
  • Warm-up condition 
  • Idle speed
 BATTERY VOLTAGE (11 - 14 V)
[Engine is running] 
  • Warm-up condition 
  • Engine speed: 2, 000 RPM
 7 - 12 V(1)
G04894537Courtesy of NISSAN MOTOR CO., U.S.A.
11 G/O Intake valve timing control solenoid valve (bank 2) [Engine is running] 
  • Warm-up condition 
  • Idle speed
 BATTERY VOLTAGE (11 - 14 V)
[Engine is running] 
  • Warm-up condition 
  • Engine speed: 2, 000 RPM
 7 - 12 V(1)
G05881449Courtesy of NISSAN MOTOR CO., U.S.A.
12 R/G Power steering pressure sensor [Engine is running] 
  • Steering wheel: Being turned
 0.5 - 4.5 V
[Engine is running] 
Steering wheel: Not being turned		 0.4 - 0.8 V
13 W/R Crankshaft position sensor (POS) [Engine is running] 
  • Warm-up condition 
  • Idle speed
NOTE: The pulse cycle changes depending on RPM at idle
 1.0 - 2.0 V(1)
G04897014Courtesy of NISSAN MOTOR CO., U.S.A.
[Engine is running] 
  • Engine speed: 2, 000 RPM
 1.0 - 2.0 V(1)
G04897015Courtesy of NISSAN MOTOR CO., U.S.A.
14 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 - 4.0 V(1)
G04897025Courtesy of NISSAN MOTOR CO., U.S.A.
[Engine is running] 
  • Engine speed: 2, 000 RPM
 1.0 - 4.0 V(1)
G06302913Courtesy of NISSAN MOTOR CO., U.S.A.
15 W Knock sensor (bank 1) [Engine is running] 
  • Idle speed
 Approximately 2.5 V
16 W/L A/F sensor 1 (bank 1) [Engine is running] 
  • Warm-up condition 
  • Idle speed
 Approximately 3.1 V
35 GR/L Approximately 2.6 V
56 LG/B Approximately 2.3 V
75 Y Approximately 2.3 V
21
22
23
40
41
42
44
63		 W/B
R/Y
R/B
V/R
P/L
R/W
O
G/Y		 Fuel injector No. 5
Fuel injector No. 3
Fuel injector No. 1
Fuel injector No. 6
Fuel injector No. 4
Fuel injector No. 2
Fuel injector No. 7
Fuel injector No. 8		 [Engine is running] 
  • Warm-up condition 
  • Idle speed
NOTE: The pulse cycle changes depending on RPM at idle
 BATTERY VOLTAGE (11 - 14 V)(1)
G05979164Courtesy of NISSAN MOTOR CO., U.S.A.
[Engine is running] 
  • Warm-up condition 
  • Engine speed: 2, 000 RPM
 BATTERY VOLTAGE (11 - 14 V)(1)
G05979165Courtesy of NISSAN MOTOR CO., U.S.A.
24 SB A/F sensor 1 heater (bank 2) [Engine is running] 
  • Warm-up condition 
  • Idle speed
 Approximately 5 V(1)
G04894534Courtesy of NISSAN MOTOR CO., U.S.A.
25 P/B 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 - 1.0 V
[Ignition switch: ON] 
  • Engine: Stopped

[Engine is running] 
  • Engine speed: Above 3, 600 RPM
 BATTERY VOLTAGE (11 - 14 V)
29 V VIAS control solenoid valve [Engine is running] 
  • Selector lever: P or N position
 0 - 1.0 V
[Engine is running] 
  • Selector lever: D position
  • Engine speed: Below 5, 000 RPM
 BATTERY VOLTAGE (11 - 14 V)
[Engine is running] 
  • Engine speed: Above 5, 000 RPM
 0 - 1.0 V
32 R/G EVAP control system pressure sensor [Ignition switch: ON]  Approximately 1.8 - 4.8 V
34 Y/G Intake air temperature sensor [Engine is running]  Approximately 0 - 4.8 V
Output voltage varies with intake air temperature.
36 W Knock sensor (bank 2) [Engine is running] 
  • Idle speed
 Approximately 2.5 V
38 G/B Fuel pump control module (FPCM) check [When cranking engine]  Approximately 0 V
[Engine is running] 
  • Warm-up condition 
  • Idle speed
 4 - 6 V
39 B/R Fuel pump control module (FPCM) [When cranking engine]  0 - 0.5 V
[Engine is running] 
  • Warm-up condition 
  • Idle speed
 8 - 12 V
45 V 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)
G04897069Courtesy of NISSAN MOTOR CO., U.S.A.
[Engine is running] 
  • Engine speed: Approx. 2, 000 RPM (More than 100 seconds after starting engine)
 BATTERY VOLTAGE (11 - 14 V)(1)
G04897070Courtesy of NISSAN MOTOR CO., U.S.A.
46
60
61
62
65
79
80
81		 L/O
V/W
P
Y/R
BR/R
GR/R
GR/B
G/R		 Ignition signal No. 7
Ignition signal No. 5
Ignition signal No. 3
Ignition signal No. 1
Ignition signal No. 8
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 - 0.2 V(1)
G04900809Courtesy of NISSAN MOTOR CO., U.S.A.
[Engine is running] 
  • Warm-up condition 
  • Engine speed: 2, 000 RPM
 0.1 - 0.4 V(1)
G05979163Courtesy of NISSAN MOTOR CO., U.S.A.
47 G Sensor power supply (Throttle position sensor) [Ignition switch: ON]  Approximately 5 V
48 BR Sensor power supply (EVAP control system pressure sensor) [Ignition switch: ON]  Approximately 5 V
49 B/Y Sensor power supply (Refrigerant pressure sensor, Battery current sensor) [Ignition switch: ON]  Approximately 5 V
50 W Throttle position sensor 1 [Ignition switch: ON] 
  • Engine: Stopped
  • Selector lever: D position
  • Accelerator pedal: Fully released
 More than 0.36 V
[Ignition switch: ON] 
  • Engine: Stopped
  • Selector lever: D position
  • Accelerator pedal: Fully depressed
 Less than 4.75 V
51 W 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
 1.6 - 1.9 V
53 LG Intake valve timing control position sensor (bank 2) [Engine is running] 
  • Warm-up condition 
  • Idle speed
 0 - 1.0 V(1)
G06302921Courtesy of NISSAN MOTOR CO., U.S.A.
[Engine is running] 
  • Engine speed: 2, 000 RPM
 0 - 1.0 V(1)
G06302922Courtesy of NISSAN MOTOR CO., U.S.A.
55 L/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 - Approximately 1.0 V
57 BR/W A/F sensor 1 (bank 2) [Engine is running] 
  • Warm-up condition 
  • Idle speed
 Approximately 2.6 V
58 G/O Approximately 2.3 V
76 G/W Approximately 3.1 V
77 GR Approximately 2.3 V
66 B Sensor ground (Throttle position sensor) [Engine is running] 
  • Warm-up condition 
  • Idle speed
 Approximately 0 V
67 B/W Sensor ground [Engine is running] 
  • Warm-up condition 
  • Idle speed
 Approximately 0 V
68 L/Y Sensor power supply (Power steering pressure sensor) [Ignition switch: ON]  Approximately 5 V
69 R Throttle position sensor 2 [Ignition switch: ON] 
  • Engine: Stopped
  • Selector lever: D position
  • Accelerator pedal: Fully released
 Less than 4.75 V
[Ignition switch: ON] 
  • Engine: Stopped
  • Selector lever: D position
  • Accelerator pedal: Fully depressed
 More than 0.36 V
70 L/R Refrigerant pressure sensor [Engine is running] 
  • Warm-up condition 
  • Both A/C switch and blower fan motor switch: ON (Compressor operates)
 1.0 - 4.0 V
71 L/R Battery current sensor [Engine is running] 
  • Battery: Fully charged(2)
  • Idle speed
 Approximately 2.6 - 3.5 V
72 L Intake valve timing control position sensor (bank 1) [Engine is running] 
  • Warm-up condition 
  • Idle speed
 0 - 1.0 V(1)
G06302921Courtesy of NISSAN MOTOR CO., U.S.A.
[Engine is running] 
  • Engine speed: 2, 000 RPM
 0 - 1.0 V(1)
G06302922Courtesy of NISSAN MOTOR CO., U.S.A.
73 Y/B Engine coolant temperature sensor [Engine is running]  Approximately 0 - 4.8 V
Output voltage varies with engine coolant temperature.
74 W 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 1.0 V
78 B Sensor ground (Heated oxygen sensor 2) [Engine is running] 
  • Warm-up condition 
  • Idle speed
 Approximately 0 V
82 W Sensor ground (APP sensor 1) [Engine is running] 
  • Warm-up condition 
  • Idle speed
 Approximately 0 V
83 P Sensor ground (APP sensor 2) [Engine is running] 
  • Warm-up condition 
  • Idle speed
 Approximately 0 V
85 V Data link connector - -
86 P CAN communication line - -
90 L Sensor power supply (APP sensor 1) [Ignition switch: ON]  Approximately 5 V
91 BR Sensor power supply (APP sensor 2) [Ignition switch: ON]  Approximately 5 V
94 L CAN communication line - -
98 R Accelerator pedal position sensor 2 [Ignition switch: ON] 
  • Engine: Stopped
  • Accelerator pedal: Fully released
 0.20 - 0.55 V
[Ignition switch: ON] 
  • Engine: Stopped
  • Accelerator pedal: Fully depressed
 1.85 - 2.40 V
99 Y ICC steering switch (models with ICC system) [Ignition switch: ON] 
  • ICC steering switch: OFF
 Approximately 4.3 V
[Ignition switch: ON] 
  • MAIN switch: Pressed
 Approximately 0 V
[Ignition switch: ON] 
  • CANCEL switch: Pressed
 Approximately 1.9 V
[Ignition switch: ON] 
  • RESUME/ACCELERATE switch: Pressed
 Approximately 3.8 V
[Ignition switch: ON] 
  • SET/COAST switch: Pressed
 Approximately 3.3 V
[Ignition switch: ON] 
  • DISTANCE switch: Pressed
 Approximately 2.6 V
[Ignition switch: ON] 
  • LDP ON switch: Pressed
 Approximately 1.1 V
99 Y ASCD steering switch (models with ASCD system) [Ignition switch: ON] 
  • ASCD steering switch: OFF
 Approximately 4 V
[Ignition switch: ON] 
  • MAIN switch: Pressed
 Approximately 0 V
[Ignition switch: ON] 
  • CANCEL switch: Pressed
 Approximately 1 V
[Ignition switch: ON] 
  • RESUME/ACCELERATE switch: Pressed
 Approximately 3 V
[Ignition switch: ON] 
  • SET/COAST switch: Pressed
 Approximately 2 V
101 V/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)
102 G PNP switch [Ignition switch: ON] 
  • Selector lever: P or N position
 Approximately 0 V
[Ignition switch: ON] 
  • Selector lever: Except above position
 BATTERY VOLTAGE (11 - 14 V)
104 O Throttle control motor relay [Ignition switch: OFF]  BATTERY VOLTAGE (11 - 14 V)
[Ignition switch: ON]  0 - 1.0 V
106 LG Accelerator pedal position sensor 1 [Ignition switch: ON] 
  • Engine stopped
  • Accelerator pedal: Fully released
 0.4 - 1.1 V
[Ignition switch: ON] 
  • Engine stopped
  • Accelerator pedal: Fully depressed
 3.7 - 4.8 V
107 V/W Fuel tank temperature sensor [Engine is running]  Approximately 0 - 4.8 V
Output voltage varies with fuel tank temperature.
108 BR ICC brake switch (models witch ICC system)
ASCD brake switch (models witch ASCD system)		 [Ignition switch: ON] 
  • Brake pedal: Slightly depressed
 Approximately 0 V
[Ignition switch: ON] 
  • Brake pedal: Fully released
 BATTERY VOLTAGE (11 - 14 V)
109 L Ignition switch [Ignition switch: OFF]  0 V
[Ignition switch: ON]  BATTERY VOLTAGE (11 - 14 V)
111 SB ECM relay (Self shut-off) [Engine is running] 
[Ignition switch: OFF] 
  • For a few seconds after turning ignition switch OFF
 0 - 1.5 V
[Ignition switch: OFF] 
  • More than a few seconds after turning ignition switch OFF
 BATTERY VOLTAGE (11 - 14 V)
113 GR Fuel pump relay [Ignition switch: ON] 
  • For 1 second after turning ignition switch ON

[Engine is running] 		 0 - 1.5 V
[Ignition switch: ON] 
  • More than 1 second after turning ignition switch ON
 BATTERY VOLTAGE (11 - 14 V)
115
116		 B
B		 ECM ground [Engine is running] 
  • Idle speed
 Body ground
117 GR/L EVAP canister vent control valve [Ignition switch: ON]  BATTERY VOLTAGE (11 - 14 V)
119
120		 R
R		 Power supply for ECM [Ignition switch: ON]  BATTER Y VOLTAGE (11 - 14V)
121 L Power supply for ECM (Back up) [Ignition switch: OFF]  BATTERY VOLTAGE (11 - 14 V)
(1) Average voltage for pulse signal (Actual pulse signal can be confirmed by oscilloscope.)
(2) Before measuring the terminal voltage, check that the battery is fully charged. Refer to "HOW TO HANDLE BATTERY ".
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