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Home >> Infiniti >> 2006 >> M35 Base >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (VQ35DE) - Introduction >> 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.
TERMINAL SPECIFICATION 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
G04080403Courtesy of NISSAN MOTOR CO., U.S.A.
3 R Throttle control motor relay power supply [Ignition switch: ON]  BATTERY VOLTAGE (11 - 14V)
4 L/W Throttle control motor (Close) [Ignition switch: ON] 
  • Engine stopped
  • Selector lever: D
  • Accelerator pedal: Fully released
G04074579Courtesy of NISSAN MOTOR CO., U.S.A.
5 L/B Throttle control motor (Open) [Ignition switch: ON] 
  • Engine stopped
  • Selector lever: D
  • Accelerator pedal: Fully depressed
G04074580Courtesy of NISSAN MOTOR CO., U.S.A.
6 R/L 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)
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 
  • Engine speed: 2, 000rpm
G04074581Courtesy of NISSAN MOTOR CO., U.S.A.
11 W/R 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, 000rpm
G04074581Courtesy of NISSAN MOTOR CO., U.S.A.
12 R/G 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 W 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 L Camshaft position sensor (PHASE) (bank 2) [Engine is running] 
  • Warm-up condition 
  • Idle speed
NOTE: The pulse cycle changes depending on rpm at idle
G04147929Courtesy 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 G/W A/F sensor 1 (bank 1) [Engine is running] 
  • Warm-up condition 
  • Idle speed
 Approximately 3.1V
35 BR/W Approximately 2.6V
56 G Approximately 2.3V
75 GR Approximately 2.3V
21
22
23
40
41
42		 W
R/Y
R/B
V/R
P/L
R/W		 Fuel injector No. 5
Fuel injector No. 3
Fuel injector No. 1
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
G04138261Courtesy of NISSAN MOTOR CO., U.S.A.
[Engine is running] 
  • Warm-up condition 
  • Engine speed: 2, 000 rpm
G04138262Courtesy of NISSAN MOTOR CO., U.S.A.
24 O 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 R/G EVAP control system pressure sensor [Ignition switch: ON]  Approximately 1.8 - 4.8V
33 LG Camshaft position sensor (PHASE) (bank 1) [Engine is running] 
  • Warm-up condition 
  • Idle speed
    NOTE: The pulse cycle changes depending on rpm at idle
G04147929Courtesy of NISSAN MOTOR CO., U.S.A.
[Engine is running] 
  • Engine speed is 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.
38 G/R Fuel pump control module (FPCM) check [When cranking engine]  Approximately 0V
[Engine is running] 
  • Warm-up condition 
  • Idle speed
 4 - 6V
39 B/R Fuel pump control module (FPCM) [When cranking engine]  0 - 0.5V
[Engine is running] 
  • Warm-up condition 
  • Idle speed
 8 - 12V
45 V EVAP canister purge volume control solenoid valve [Engine is running] 
  • Idle speed
  • Accelerator pedal: Not depressed even slightly, after engine starting
G04179935Courtesy of NISSAN MOTOR CO., U.S.A.
[Engine is running] 
  • Engine speed: About 2, 000 rpm (More than 100 seconds after starting engine)
G04074109Courtesy of NISSAN MOTOR CO., U.S.A.
47 L Sensor power supply (Throttle position sensor) [Ignition switch: ON]  Approximately 5V
48 L/B Sensor power supply (EVAP control system pressure sensor) [Ignition switch: ON]  Approximately 5V
49 B/Y Sensor power supply (Refrigerant pressure sensor, Battery current sensor) [Ignition switch: ON]  Approximately 5V
50 W Throttle position sensor 1 [Ignition switch: ON] 
  • Engine stopped
  • Selector lever: D
  • Accelerator pedal: Fully released
 More than 0.36V
[Ignition switch: ON] 
  • Engine stopped
  • Selector lever: D
  • Accelerator pedal: Fully depressed
 Less than 4.75V
51 W 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
 1.6 - 0.9V
55 W Heated oxygen sensor 2 (bank 2) [Engine is running] 
  • Warm-up condition 
  • Revving engine from idle to 3, 000 rpm quickly after the following conditions are met
    • 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 GR/L A/F sensor 1 (bank 2) [Engine is running] 
  • Warm-up condition 
  • Idle speed
 Approximately 2.6V
58 LG/B Approximately 2.3V
76 W/L Approximately 3.1V
77 Y Approximately 2.3V
60
61
62
79
80
81		 V/W
P
Y/R
GR/R
GR/B
G/R		 Ignition signal No. 5
Ignition signal No. 3
Ignition signal No. 1
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
G04138268Courtesy of NISSAN MOTOR CO., U.S.A.
[Engine is running] 
  • Warm-up condition 
  • Engine speed: 2, 000 rpm
G04138269Courtesy of NISSAN MOTOR CO., U.S.A.
66 B Sensor ground (Throttle position sensor) [Engine is running] 
  • Warm-up condition 
  • Idle speed
 Approximately 0V
67 B/W Sensor ground (MAF sensor, IAT sensor, ECT sensor, EVAP control system pressure sensor, PSP sensor, ASCD/ICC steering switch, Battery current sensor, Refrigerant pressure sensor) [Engine is running] 
  • Warm-up condition 
  • Idle speed
 Approximately 0V
68 L/Y Sensor power supply (Power steering pressure sensor) [Ignition switch: ON]  Approximately 5V
69 R Throttle position sensor 2 [Ignition switch: ON] 
  • Engine stopped
  • Selector lever: D
  • Accelerator pedal: Fully released
 Less than 4.75V
[Ignition switch: ON] 
  • Engine stopped
  • Selector lever: D
  • Accelerator pedal: Fully depressed
 More than 0.36V
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 - 4.0V
71 L/R Battery current sensor [Engine is running] 
  • Battery: Fully charged(1)
  • Idle speed
 Approximately 2.6 - 3.5V
73 Y/B Engine coolant temperature sensor [Engine is running]  Approximately 0 - 4.8V Output voltage varies with engine coolant temperature.
74 W Heated oxygen sensor 2 (bank 1) [Engine is running] 
  • Warm-up condition 
  • Revving engine from idle to 3, 000 rpm quickly after the following conditions are met
    • 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 Sensor ground (Heated oxygen sensor) [Engine is running] 
  • Warm-up condition 
  • Idle speed
 Approximately 0V
82 W Sensor ground (APP sensor 1) [Engine is running] 
  • Warm-up condition 
  • Idle speed
 Approximately 0V
83 P Sensor ground (APP sensor 2) [Engine is running] 
  • Warm-up condition 
  • Idle speed
 Approximately 0V
85 V 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 L Sensor power supply (APP sensor 1) [Ignition switch: ON]  Approximately 5V
91 BR Sensor power supply (APP 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 R Accelerator pedal position sensor 2 [Ignition switch: ON] 
  • Engine stopped
  • Accelerator pedal: Fully released
 0.20 - 0.55V
[Ignition switch: ON] 
  • Engine stopped
  • Accelerator pedal: Fully depressed
 1.85 - 2.40V
99 Y ICC steering switch (models with ICC system) [Ignition switch: ON] 
  • ICC steering switch: OFF
 Approximately 4.3V
[Ignition switch: ON] 
  • MAIN switch: Pressed
 Approximately 0V
[Ignition switch: ON] 
  • CANCEL switch: Pressed
 Approximately 1.3V
[Ignition switch: ON] 
  • RESUME/ACCELERATE switch: Pressed
 Approximately 3.7V
[Ignition switch: ON] 
  • SET/COAST switch: Pressed
 Approximately 3V
[Ignition switch: ON] 
  • DISTANCE switch: Pressed
 Approximately 2.2V
99 Y ASCD steering switch (models with ASCD system) [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 V/R 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 PNP switch [Ignition switch: ON] 
  • Selector lever: P or N
 Approximately 0V
[Ignition switch: ON] 
  • Selector lever: Except above
 BATTERY VOLTAGE (11 - 14V)
104 O Throttle control motor relay [Ignition switch: OFF]  BATTERY VOLTAGE (11 - 14V)
[Ignition switch: ON]  0 - 1.0V
106 LG Accelerator pedal position sensor 1 [Ignition switch: ON] 
  • Engine stopped
  • Accelerator pedal: Fully released
 0.4 - 1.1V
[Ignition switch: ON] 
  • Engine stopped
  • Accelerator pedal: Fully depressed
 3.7 - 4.8V
107 V/W Fuel tank temperature sensor [Engine is running]  Approximately 0 - 4.8V 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 0V
[Ignition switch: ON] 
  • Brake pedal: Fully released
 BATTERY VOLTAGE (11 - 14V)
109 L Ignition switch [Ignition switch: OFF]  0V
[Ignition switch: ON]  BATTERY VOLTAGE (11 - 14V)
111 SB ECM relay (Self shut-off) [Engine is running] 
[Ignition switch: OFF] 
  • 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 GR 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
B		 ECM ground [Engine is running] 
  • Idle speed
 Body ground
117 GR/L EVAP canister vent control valve [Ignition switch: ON]  BATTERY VOLTAGE (11 - 14V)
119
120		 R
R		 Power supply for ECM [Ignition switch: ON]  BATTERY VOLTAGE (11 - 14V)
121 L Power supply for ECM (Back-up) [Ignition switch: OFF]  BATTERY VOLTAGE (11 - 14V)
*: Average voltage for pulse signal (Actual pulse signal can be confirmed by oscilloscope.)
*: Before measuring the terminal voltage, confirm that the battery is fully charged. Refer to "SPECIFIC GRAVITY CHECK ".
(1) The following emission-related diagnostic information is cleared when the ECM memory is erased.
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