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Home › Nissan-Datsun › 2004 › Sentra SE-R › Repair and Diagnosis › External Pages › Different car › Section 2289 (Engine Control System - Introduction (Coupe)) › Trouble Diagnosis › ECM Terminals and Reference Value › ECM Inspection Table

ECM Inspection Table

WARNING: This page is about a different car, the 2006 Infiniti G35. 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-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 INSPECTION TABLE

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
 Approximately 5V(2)
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
 0 - 14V(2)
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
 0 - 14V(2)
G04074580Courtesy of NISSAN MOTOR CO., U.S.A.
6 BR/W Heated oxygen sensor 2 heater (bank 2) [Engine is running] 
  • Engine speed is 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(1) 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
 7 - 12V(2)
G04074581Courtesy of NISSAN MOTOR CO., U.S.A.
9(1) 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
 7 - 12V(2)
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
 7 - 12V(2)
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
 7 - 12V(2)
G04179545Courtesy 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.
 Approximately 1.6V(2)
G04074583Courtesy of NISSAN MOTOR CO., U.S.A.
[Engine is running] 
  • Engine speed: 2, 000 rpm
 Approximately 1.4V(2)
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.
 1.0 - 4.0V(2)
G04179548Courtesy of NISSAN MOTOR CO., U.S.A.
[Engine is running] 
  • Engine speed: 2, 000 rpm
 1.0 - 4.0V(2)
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.
 BATTERY VOLTAGE (11 - 14V)(2)
G04080414Courtesy of NISSAN MOTOR CO., U.S.A.
[Engine is running] 
  • Warm-up condition 
  • Engine speed: 2, 000 rpm
 BATTERY VOLTAGE (11 - 14V)(2)
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
 Approximately 5V(2)
G04080403Courtesy of NISSAN MOTOR CO., U.S.A.
25 P/B Heated oxygen sensor 2 heater (bank 1) [Engine is running] 
  • Engine speed is 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.
 1.0 - 4.0V(2)
G04179553Courtesy of NISSAN MOTOR CO., U.S.A.
[Engine is running] 
  • Engine speed: 2, 000 rpm
 1.0 - 4.0V(2)
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.
 BATTERY VOLTAGE (11 - 14V)(2)
G04080414Courtesy of NISSAN MOTOR CO., U.S.A.
[Engine is running] 
  • Warm-up condition 
  • Engine speed: 2, 000 rpm
 BATTERY VOLTAGE (11 - 14V)(2)
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.
 BATTERY VOLTAGE (11 - 14V)(2)
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)
 BATTERY VOLTAGE (11 - 14V)(2)
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.
 0 - 1.0V(2)
G04179559Courtesy of NISSAN MOTOR CO., U.S.A.
[Engine is running] 
  • Engine speed: 2, 000 rpm
 0 - 1.0V(2)
G04179560Courtesy 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.
 0 - 0.2V(2)
G04073752Courtesy of NISSAN MOTOR CO., U.S.A.
[Engine is running] 
  • Warm-up condition 
  • Engine speed: 2, 500 rpm
 0.1 - 0.4V(2)
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.
 0 - 1.0V(2)
G04179563Courtesy of NISSAN MOTOR CO., U.S.A.
[Engine is running] 
  • Engine speed: 2, 000 rpm
 0 - 1.0V(2)
G04179564Courtesy 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.
 0 - 0.2V(2)
G04073752Courtesy of NISSAN MOTOR CO., U.S.A.
[Engine is running] 
  • Warm-up condition 
  • Engine speed: 2, 500 rpm
 0.1 - 0.4V(2)
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 SB 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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