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Home >> Nissan-Datsun >> 2007 >> Maxima SL >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - 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.
ECM INSPECTION TABLE

TERMINAL NO. WIRE COLOR ITEM CONDITION DATA (DC Voltage)
1 B ECM ground [Engine is running] 
  • Idle speed
 Body ground
2 G/B A/F sensor 1 heater (Bank 1) [Engine is running] 
  • Warm-up condition 
  • Idle speed
 Approximately 5V(1)
G04915201Courtesy of NISSAN MOTOR CO., U.S.A.
3 R Throttle control motor relay power supply [Ignition switch: ON]  BATTERY VOLTAGE (11 - 14V)
4 O/L Throttle control motor (Close) [Ignition switch: ON] 
  • Engine: Stopped
  • Shift lever: D
  • Accelerator pedal: Fully released
 0 - 14V(1)
G04900086Courtesy of NISSAN MOTOR CO., U.S.A.
5 W/L Throttle control motor (Open) [Ignition switch: ON] 
  • Engine: Stopped
  • Shift lever: D
  • Accelerator pedal: Fully depressed
 0 - 14V(1)
G04900087Courtesy of NISSAN MOTOR CO., U.S.A.
6 O/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 - 1.0V
[Ignition switch: ON] 
  • Engine: Stopped

    [Engine is running] 

  • Engine speed: Above 3, 600 rpm
 BATTERY VOLTAGE (11 - 14V)
8 O Electronic controlled engine mount-1 [Engine is running] 
  • Engine speed: Above 950 rpm.
 BATTERY VOLTAGE (11 - 14V)
[Engine is running] 
  • For 2 seconds after engine speed is 950 rpm or less.
 0 - 1.0V
[Engine is running] 
  • 2 seconds after engine speed is 950 rpm or less.
 2.0 - 3.0V
9 W/R Electronic controlled engine mount-2 [Engine is running] 
  • Engine speed: Below 950 rpm.
 BATTERY VOLTAGE (11 - 14V)
[Engine is running] 
  • For 2 seconds after engine speed is 950 rpm or more.
 0 - 1.0V
[Engine is running] 
  • 2 seconds after engine speed is 950 rpm or more.
 2.0 - 3.0V
10 V/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)
G04900088Courtesy of NISSAN MOTOR CO., U.S.A.
11 R/L 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)
G04900088Courtesy of NISSAN MOTOR CO., U.S.A.
12 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 G Crankshaft position sensor (POS) [Engine is running] 
  • Warm-up condition 
  • Idle speed
NOTE: The pulse cycle changes depending on rpm at idle
 Approximately 10V(1)
G04900090Courtesy of NISSAN MOTOR CO., U.S.A.
[Engine is running] 
  • Engine speed: 2, 000 rpm
 Approximately 10V(1)
G04900091Courtesy of NISSAN MOTOR CO., U.S.A.
14 W 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(1)
G04900092Courtesy of NISSAN MOTOR CO., U.S.A.
[Engine is running] 
  • Engine speed: 2, 000 rpm
 1.0 - 4.0V(1)
G04900093Courtesy of NISSAN MOTOR CO., U.S.A.
15 W Knock sensor [Engine is running] 
  • Idle speed
 Approximately 2.5V
16 LG/B A/F sensor 1 (Bank 1) [Engine is running] 
  • Warm-up condition 
  • Idle speed
 Approximately 3.1V
35 O/L Approximately 2.6V
56 BR/Y Approximately 2.3V
75 Y/R Approximately 2.3V
21
22
23		 L/W
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)(1)
G04900094Courtesy of NISSAN MOTOR CO., U.S.A.
[Engine is running] 
  • Warm-up condition 
  • Engine speed: 2, 000 rpm
 BATTERY VOLTAGE (11 - 14V)(1)
G04900095Courtesy of NISSAN MOTOR CO., U.S.A.
24 V A/F sensor 1 heater (Bank 2) [Engine is running] 
  • Warm-up condition 
  • Idle speed
 Approximately 5V(1)
G04915201Courtesy 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)
29 Y/V VIAS control solenoid valve [Engine is running] 
  • Idle speed
 BATTERY VOLTAGE (11 - 14V)
[Engine is running] 
  • Engine speed: Between 1, 800 and 3, 600 rpm
 0 - 1.0V
32 BR EVAP control system pressure sensor [Ignition switch: ON]  Approximately 1.8 - 4.8V
33 W 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(1)
G04900092Courtesy of NISSAN MOTOR CO., U.S.A.
[Engine is running] 
  • Engine speed: 2, 000 rpm
 1.0 - 4.0V(1)
G04900093Courtesy of NISSAN MOTOR CO., U.S.A.
34 V/O Intake air temperature sensor [Engine is running]  Approximately 0 - 4.8V
Output voltage varies with intake air temperature.
40
41
42		 V/R
G/W
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)(1)
G04900094Courtesy of NISSAN MOTOR CO., U.S.A.
[Engine is running] 
  • Warm-up condition 
  • Engine speed: 2, 000 rpm
 BATTERY VOLTAGE (11 - 14V)(1)
G04900095Courtesy of NISSAN MOTOR CO., U.S.A.
45 V/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)
G04900099Courtesy 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)
G04900100Courtesy of NISSAN MOTOR CO., U.S.A.
47 G Sensor power supply
(Throttle position sensor)		 [Ignition switch: ON]  Approximately 5V
48 G Sensor power supply
(EVAP control system pressure sensor)		 [Ignition switch: ON]  Approximately 5V
49 BR/W 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
  • Accelerator pedal: Fully released
 More than 0.36V
[Ignition switch: ON] 
  • Engine: Stopped
  • Shift lever: D
  • Accelerator pedal: Fully depressed
 Less than 4.75V
51 G/O Mass air flow sensor [Engine is running] 
  • Warm-up condition  .
  • Idle speed
 1.0 - 1.2V
[Engine is running] 
  • Warm-up condition  .
  • Engine speed: 2, 500 rpm
 1.6 - 2.0V
55 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 1.0V
57 P A/F sensor 1 (Bank 2) [Engine is running] 
  • Warm-up condition 
  • Idle speed
 Approximately 2.6V
58 SB Approximately 2.3V
76 G/Y Approximately 3.1V
77 LG Approximately 2.3V
60
61
62		 P/W
L/R
BR/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 - 0.3V(1)
G04900101Courtesy of NISSAN MOTOR CO., U.S.A.
[Engine is running] 
  • Warm-up condition 
  • Engine speed: 2, 500 rpm
 0.1 - 0.6V(1)
G04900102Courtesy 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 Sensor ground [Engine is running] 
  • Warm-up condition 
  • Idle speed
 Approximately 0V
68 L/Y Sensor power supply
(PSP sensor)		 [Ignition switch: ON]  Approximately 5V
69 R Throttle position sensor 2 [Ignition switch: ON] 
  • Engine: Stopped
  • Shift lever: D
  • Accelerator pedal: Fully released
 Less than 4.75V
[Ignition switch: ON] 
  • Engine: Stopped
  • Shift lever: D.
  • Accelerator pedal: Fully depressed
 More than 0.36V
70 W Refrigerant pressure sensor [Engine is running] 
  • Warm-up condition 
  • Both A/C switch and blower fan switch: ON (Compressor operates.).
 1.0 - 4.0V
73 Y Engine coolant temperature sensor [Engine is running]  Approximately 0 - 4.8V
Output voltage varies with engine coolant temperature.
74 L 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 1.0V
78 B/W Sensor ground
(Heated oxygen sensor 2)		 [Engine is running] 
  • Warm-up condition 
  • Idle speed
 Approximately 0V
79
80
81		 GR/R
GR
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 - 0.3V(1)
G04900101Courtesy of NISSAN MOTOR CO., U.S.A.
[Engine is running] 
  • Warm-up condition 
  • Engine speed: 2, 500 rpm
 0.1 - 0.6V(1)
G04900102Courtesy of NISSAN MOTOR CO., U.S.A.
82 GR Sensor ground
(APP sensor 1)		 [Engine is running] 
  • Warm-up condition  .
  • Idle speed
 Approximately 0V
83 G Sensor ground
(APP sensor 2)		 [Engine is running] 
  • Warm-up condition  .
  • Idle speed.
 Approximately 0V
85 LG 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 LG/R Sensor power supply
(APP sensor 1)		 [Ignition switch: ON]  Approximately 5V
91 P 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 V Accelerator pedal position sensor 2 [Ignition switch: ON] 
  • Engine: Stopped
  • Accelerator pedal: Fully released
 0.28 - 0.48V
[Ignition switch: ON] 
  • Engine: Stopped
  • Accelerator pedal: Fully depressed
 More than 2.0V
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/W PNP switch [Ignition switch: ON] 
  • Shift lever: P or N
 Approximately 0V
[Ignition switch: ON] 
  • Except above position
 BATTERY VOLTAGE (11 - 14V)
104 O Throttle control motor relay [Ignition switch: OFF]  BATTERY VOLTAGE (11 - 14V)
[Ignition switch: ON]  0 - 1.0V
106 W Accelerator pedal position sensor 1 [Ignition switch: ON]  .
  • Engine: Stopped
  • Accelerator pedal: Fully released
 0.65 - 0.87V
[Ignition switch: ON] 
  • Engine: Stopped
  • Accelerator pedal: Fully depressed
 More than 4.3V
107 R/L Fuel tank temperature sensor [Engine is running]  Approximately 0 - 4.8V
Output voltage varies with fuel tank temperature.
108 G/R ASCD brake switch [Ignition switch: ON] 
  • Brake pedal: Slightly depressed
 Approximately 0V
[Ignition switch: ON] 
  • Brake pedal: Fully released
 BATTERY VOLTAGE (11 - 14V)
109 R/W Ignition switch [Ignition switch: OFF]  0V
[Ignition switch: ON]  BATTERY VOLTAGE (11 - 14V)
111 W/B 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/O 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 R/Y EVAP canister vent control valve [Ignition switch: ON]  BATTERY VOLTAGE (11 - 14V)
119
120		 R/G
R/G		 Power supply for ECM [Ignition switch: ON]  BATTERY VOLTAGE (11 - 14V)
121 W/L Power supply for ECM (Backup) [Ignition switch: OFF]  BATTERY VOLTAGE (11 - 14V)
(1) Average voltage for pulse signal (Actual pulse signal can be confirmed by oscilloscope.)
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