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Home >> Nissan-Datsun >> 2007 >> Quest Base >> 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 CHART

TERMINAL NO. WIRE COLOR ITEM CONDITION DATA (DC Voltage)
1 B ECM ground [Engine is running] 
  • Idle speed
Body ground
2 R/G A/F sensor 1 heater (Bank 1) [Engine is running] 
  • Warm-up condition 
  • Idle speed
G04905151Courtesy of NISSAN NORTH AMERICA, INC.
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
G04900086Courtesy of NISSAN NORTH AMERICA, INC.
5 W/L Throttle control motor (Open) [Ignition switch: ON] 
  • Engine stopped
  • Shift lever: D
  • Accelerator pedal: Fully depressed
G04900087Courtesy of NISSAN NORTH AMERICA, INC.
6 GR 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 W 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: 950 rpm or less
0 - 1.0V
[Engine is running] 
  • 2 seconds after engine speed: 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: 950 rpm or more
0 - 1.0V
[Engine is running] 
  • 2 seconds after engine speed: 950 rpm or more
2.0 - 3.0V
10 Y/L 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
G04900088Courtesy of NISSAN NORTH AMERICA, INC.
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
G04900088Courtesy of NISSAN NORTH AMERICA, INC.
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 W Crankshaft position sensor (POS) [Engine is running] 
  • Warm-up condition 
  • Idle speed
NOTE: The pulse cycle changes depending on rpm at idle
G04900090Courtesy of NISSAN NORTH AMERICA, INC.
[Engine is running] 
  • Engine speed: 2, 000 rpm
G04900091Courtesy of NISSAN NORTH AMERICA, INC.
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
G04900092Courtesy of NISSAN NORTH AMERICA, INC.
[Engine is running] 
  • Engine speed: 2, 000 rpm
G04900093Courtesy of NISSAN NORTH AMERICA, INC.
15 W Knock sensor [Engine is running] 
  • Idle speed
Approximately 2.5V
16 BR A/F sensor 1 (Bank 1) [Engine is running] 
  • Warm-up condition 
  • Idle speed
Approximately 3.1V
35 O/B Approximately 2.6V
56 V Approximately 2.3V
75 P Approximately 2.3V
17
18
19
20
P/B
G
L
L/W
EGR volume control valve [Engine is running] 
  • Idle speed
0.1 - 14V
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
G04905160Courtesy of NISSAN NORTH AMERICA, INC.
[Engine is running] 
  • Warm-up condition 
  • Engine speed: 2, 000 rpm
BATTERY VOLTAGE
G04905161Courtesy of NISSAN NORTH AMERICA, INC.
24 W A/F sensor 1 heater (Bank 2) [Engine is running] 
  • Warm-up condition 
  • Idle speed
G04905151Courtesy of NISSAN NORTH AMERICA, INC.
25 P 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/G 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 Y Camshaft position sensor (PHASE) (Bank 1) [Engine is running] 
  • Warm-up condition 
  • Idle speed
NOTE: The pulse cycle changes depending on rpm at idle
G04900092Courtesy of NISSAN NORTH AMERICA, INC.
[Engine is running] 
  • Engine speed: 2, 000 rpm
G04900093Courtesy of NISSAN NORTH AMERICA, INC.
34 Y/G Intake air temperature sensor [Engine is running]  Approximately 0 - 4.8V
Output voltage varies with intake air temperature.
40
41
42
V/W
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
G04905160Courtesy of NISSAN NORTH AMERICA, INC.
[Engine is running] 
  • Warm-up condition 
  • Engine speed: 2, 000 rpm
BATTERY VOLTAGE
G04905161Courtesy of NISSAN NORTH AMERICA, INC.
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
G04905167Courtesy of NISSAN NORTH AMERICA, INC.
[Engine is running] 
  • Engine speed: About 2, 000 rpm (More than 100 seconds after starting engine)
BATTERY VOLTAGE
G04905168Courtesy of NISSAN NORTH AMERICA, INC.
47 R Throttle position sensor power supply [Ignition switch: ON]  Approximately 5V
48 G/O EVAP control system pressure sensor power supply [Ignition switch: ON]  Approximately 5V
49 BR/Y Refrigerant pressure sensor power supply [Ignition switch: ON]  Approximately 5V
50 Y 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 W/L Mass air flow sensor [Engine is running] 
  • Warm-up condition 
  • Idle speed
1.0 - 1.3V
[Engine is running] 
  • Warm-up condition 
  • Engine speed: 2, 500 rpm
1.6 - 2.0V
54 P/L EGR temperature sensor [Ignition switch: ON]  Less than 4.5V
[Engine is running] 
  • Warm-up condition 
  • EGR system: Operating
0 - 1.5V
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 W/R A/F sensor 1 (Bank 2) [Engine is running] 
  • Warm-up condition 
  • Idle speed
Approximately 2.6V
58 LG/R Approximately 2.3V
76 O Approximately 3.1V
77 LG Approximately 2.3V
60
61
62
P/L
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
G04900101Courtesy of NISSAN NORTH AMERICA, INC.
[Engine is running] 
  • Warm-up condition 
  • Engine speed: 2, 500 rpm
G04900102Courtesy of NISSAN NORTH AMERICA, INC.
66 G Throttle position sensor ground [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 BR/W PSP sensor power supply [Ignition switch: ON]  Approximately 5V
69 L 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/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] 
  • 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 Heated oxygen sensor 2 ground [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
G04905171Courtesy of NISSAN NORTH AMERICA, INC.
[Engine is running] 
  • Warm-up condition 
  • Engine speed: 2, 500 rpm
G04900102Courtesy of NISSAN NORTH AMERICA, INC.
82 B APP sensor 1 ground [Engine is running] 
  • Warm-up condition 
  • Idle speed
Approximately 0V
83 G APP sensor 2 ground [Engine is running] 
  • Warm-up condition 
  • Idle speed
Approximately 0V
85 SB 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 R/V APP sensor 1 power supply [Ignition switch: ON]  Approximately 5V
91 O APP sensor 2 power supply [Ignition switch: ON]  Approximately 5V
94 L CAN communication line [Ignition switch: ON]  Approximately 2.5 - 3.2V Output voltage varies with the communication status.
98 W/B Accelerator pedal position sensor 2 [Ignition switch: ON] 
  • Engine stopped
  • Accelerator pedal: Fully released
0.25 - 0.5V
[Ignition switch: ON] 
  • Engine stopped
  • Accelerator pedal: Fully depressed
2.0 - 2.5V
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 R/G Stop lamp switch [Ignition switch: OFF] 
  • Brake pedal: Fully released
Approximately 0V
[Ignition switch: OFF] 
  • Brake pedal: Slightly depressed
BATTERY VOLTAGE (11 - 14V)
102 O/B PNP switch [Ignition switch: ON] 
  • Shift lever: P or N
BATTERY VOLTAGE (11 - 14V)
[Ignition switch: ON] 
  • Except the above gear position
Approximately 0V
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
0.5 - 1.0V
[Ignition switch: ON] 
  • Engine stopped
  • Accelerator pedal: Fully depressed
4.2 - 4.8V
107 R/L Fuel tank temperature sensor [Engine is running]  Approximately 0 - 4.8V Output voltage varies with fuel tank temperature.
108 G/B ASCD brake switch [Ignition switch: ON] 
  • Brake pedal: Fully released
BATTERY VOLTAGE (11 - 14V)
[Ignition switch: ON] 
  • Brake pedal: Slightly depressed
Approximately 0V
109 R 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 LG/B 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 G 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.)