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Home >> Infiniti >> 2006 >> G35 x >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - Introduction (Sedan) >> Trouble Diagnosis >> ECM Terminals 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-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.
TERMINALS VOLTAGE CONDITIONS

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

[Engine is running] 
  • Engine speed: Above 3, 600 RPM
 BATTERY VOLTAGE (11 - 14V)
8(2) R/W 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
G04074581Courtesy of NISSAN MOTOR CO., U.S.A.
9(2) P 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
G04074581Courtesy of NISSAN MOTOR CO., U.S.A.
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
G04074581Courtesy of NISSAN MOTOR CO., U.S.A.
11 R/W 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
G04074581Courtesy of NISSAN MOTOR CO., U.S.A.
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 BR Crankshaft position sensor (POS) [Engine is running] 
  • Warm-up condition 
  • Idle speed
NOTE: The pulse cycle changes depending on RPM at idle.
G04074583Courtesy of NISSAN MOTOR CO., U.S.A.
[Engine is running] 
  • Engine speed: 2, 000 RPM
G04074584Courtesy of NISSAN MOTOR CO., U.S.A.
14 Y Camshaft position sensor (PHASE) (bank 2) [Engine is running] 
  • Warm-up condition 
  • Idle speed
NOTE: The pulse cycle changes depending on RPM at idle.
G04119608Courtesy of NISSAN MOTOR CO., U.S.A.
[Engine is running] 
  • Engine speed: 2, 000 RPM
G04074586Courtesy of NISSAN MOTOR CO., U.S.A.
15 W Knock sensor [Engine is running] 
  • Idle speed
 Approximately 2.5V
16 W A/F sensor 1 (bank 1) [Engine is running] 
  • Warm-up condition 
  • Idle speed
 Approximately 3.1V
35 R Approximately 2.6V
56 L Approximately 2.3V
75 Y Approximately 2.3V
21
22
23		 G
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.
G04080414Courtesy of NISSAN MOTOR CO., U.S.A.
[Engine is running] 
  • Warm-up condition 
  • Engine speed: 2, 000 RPM
G04173127Courtesy of NISSAN MOTOR CO., U.S.A.
24 OR A/F sensor 1 heater (bank 2) [Engine is running] 
  • Warm-up condition 
  • Idle speed
G04080403Courtesy of NISSAN MOTOR CO., U.S.A.
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 P EVAP control system pressure sensor [Ignition switch: ON]  Approximately 1.8 - 4.8V
33 OR Camshaft position sensor (PHASE) (bank 1) [Engine is running] 
  • Warm-up condition 
  • Idle speed
NOTE: The pulse cycle changes depending on RPM at idle.
G04119613Courtesy of NISSAN MOTOR CO., U.S.A.
[Engine is running] 
  • Engine speed: 2, 000 RPM
G04074586Courtesy of NISSAN MOTOR CO., U.S.A.
34 Y/G Intake air temperature sensor [Engine is running]  Approximately 0 - 4.8V Output voltage varies with intake air temperature.
40
41
42		 P
R/L
R/W		 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.
G04080414Courtesy of NISSAN MOTOR CO., U.S.A.
[Engine is running] 
  • Warm-up condition 
  • Engine speed: 2, 000 RPM
G04173127Courtesy of NISSAN MOTOR CO., U.S.A.
45 L/Y EVAP canister purge volume control solenoid valve [Engine is running] 
  • Idle speed
  • Accelerator pedal is not depressed even slightly, after engine starting.
G04179935Courtesy of NISSAN MOTOR CO., U.S.A.
[Engine is running] 
  • Engine speed is about 2, 000 RPM (More than 100 seconds after starting engine)
G04074109Courtesy of NISSAN MOTOR CO., U.S.A.
47 B Sensor power supply (Throttle position sensor) [Ignition switch: ON]  Approximately 5V
48 B/Y Sensor power supply (EVAP control system pressure sensor) [Ignition switch: ON]  Approximately 5V
49 W/L Sensor power supply (Refrigerant pressure sensor) [Ignition switch: ON]  Approximately 5V
50 W 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 OR 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(1) R/W Exhaust valve timing control position sensor (bank 1) [Engine is running] 
  • Idle speed
NOTE: The pulse cycle changes depending on RPM at idle.
G04119619Courtesy of NISSAN MOTOR CO., U.S.A.
[Engine is running] 
  • Engine speed: 2, 000 RPM
G04119620Courtesy of NISSAN MOTOR CO., U.S.A.
55 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
    • After 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 R A/F sensor 1 (bank 2) [Engine is running] 
  • Warm-up condition 
  • Idle speed
 Approximately 2.6V
58 L Approximately 2.3V
76 W Approximately 3.1V
77 Y 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.
G04073752Courtesy of NISSAN MOTOR CO., U.S.A.
[Engine is running] 
  • Warm-up condition 
  • Engine speed: 2, 500 RPM
G04160879Courtesy of NISSAN MOTOR CO., U.S.A.
66 W/R 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 Y Sensor power supply (Power steering pressure sensor) [Ignition switch: ON]  Approximately 5V
69 R/L 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 R/B Refrigerant pressure sensor [Engine is running] 
  • Warm-up condition 
  • Both A/C switch and blower fan switch: ON (Compressor operates.)
 1.0 - 4.0V
72(1) Y/B Exhaust valve timing control position sensor (bank 2) [Engine is running] 
  • Idle speed
NOTE: The pulse cycle changes depending on RPM at idle.
G04119623Courtesy of NISSAN MOTOR CO., U.S.A.
[Engine is running] 
  • Engine speed: 2, 000 RPM
G04119624Courtesy of NISSAN MOTOR CO., U.S.A.
73 Y/B Engine coolant temperature sensor [Engine is running]  Approximately 0 - 4.8V Output voltage varies with engine coolant temperature.
74 L/B 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
    • After 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
G/R		 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.
G04073752Courtesy of NISSAN MOTOR CO., U.S.A.
[Engine is running] 
  • Warm-up condition 
  • Engine speed: 2, 500 RPM
G04160879Courtesy of NISSAN MOTOR CO., U.S.A.
82 GY/L Sensor ground (Accelerator pedal position sensor 1) [Engine is running] 
  • Warm-up condition 
  • Idle speed
 Approximately 0V
83 B/R Sensor ground (Accelerator pedal position sensor 2) [Engine is running] 
  • Warm-up condition 
  • Idle speed
 Approximately 0V
85 PU 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 BR/Y Sensor power supply (Accelerator pedal position sensor 1) [Ignition switch: ON]  Approximately 5V
91 G 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 LG/B 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 P/L Stop lamp switch [Ignition switch: OFF] 
  • Brake pedal: Fully released
 Approximately 0V
[Ignition switch: OFF] 
  • Brake pedal: Slightly depressed
 BATTERY VOLTAGE (11 - 14V)
102 G/OR 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 G/W Throttle control motor relay [Ignition switch: OFF]  BATTERY VOLTAGE (11 - 14V)
[Ignition switch: ON]  0 - 1.0V
106 BR 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 L/OR Fuel tank temperature sensor [Engine is running]  Approximately 0 - 4.8V Output voltage varies with fuel tank temperature.
108 L 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/L Ignition switch [Ignition switch: OFF]  0V
[Ignition switch: ON]  BATTERY VOLTAGE (11 - 14V)
111 W 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 B/OR 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/R
B		 ECM ground [Engine is running] 
  • Idle speed
 Body ground
117 GY/L EVAP canister vent control valve [Ignition switch: ON]  BATTERY VOLTAGE (11 - 14V)
119
120		 P
L		 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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