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Home >> Nissan-Datsun >> 2007 >> Frontier XE, Standard >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - Introduction (Qr) >> Trouble Diagnosis >> ECM Terminals and Reference Value >> ECM Inspection Table

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 ECM's 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 BR ECM ground [Engine is running] 
  • Idle speed
 Body ground
2 Y A/F sensor 1 heater [Engine is running] 
  • Warm-up condition 
  • Idle speed
 Approximately 5V(1)
G04894534Courtesy of NISSAN NORTH AMERICA, INC.
3 V Throttle control motor power supply [Ignition switch: ON]  BATTERY VOLTAGE (11-14V)
4 L/W Throttle control motor (Close) [Ignition switch: ON] 
  • Engine: Stopped
  • Shift lever: D (A/T) or 1st (M/T)
  • Accelerator pedal: Fully released
 0-14V(1)
G04894535Courtesy of NISSAN NORTH AMERICA, INC.
5 L/B Throttle control motor (Open) [Ignition switch: ON] 
  • Engine: Stopped
  • Shift lever: D (A/T) or 1st (M/T)
  • Accelerator pedal: Fully depressed
 0-14V(1)
G04894536Courtesy of NISSAN NORTH AMERICA, INC.
11 LG Intake valve timing control solenoid valve [Engine is running] 
  • Warm-up condition 
  • Idle speed
 BATTERY VOLTAGE (11-14V)
[Engine is running] 
  • Warm-up condition 
  • Engine speed: 2, 500 rpm
 7-10V(1)
G04894537Courtesy of NISSAN NORTH AMERICA, INC.
12 P Power steering pressure sensor [Engine is running] 
  • Steering wheel: Being turned
 0.5-4.0V
[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 3.0V(1)
G04894538Courtesy of NISSAN NORTH AMERICA, INC.
[Engine is running] 
  • Engine speed: 2, 000 rpm
 Approximately 3.0V(1)
G04894539Courtesy of NISSAN NORTH AMERICA, INC.
14 Y Camshaft position sensor (PHASE) [Engine is running] 
  • Warm-up condition 
  • Idle speed
    NOTE: The pulse cycle changes depending on rpm at idle.
 1.0-4.0V(1)
G04894540Courtesy of NISSAN NORTH AMERICA, INC.
[Engine is running] 
  • Engine speed: 2, 000 rpm
 1.0-4.0V(1)
G04894541Courtesy of NISSAN NORTH AMERICA, INC.
15 W Knock sensor [Engine is running] 
  • Idle speed
 Approximately 2.5V
16 V A/F sensor 1 [Engine is running] 
  • Warm-up condition 
  • Idle speed
 Approximately 3.1V
35 O Approximately 2.6V
56 W Approximately 2.3V
75 L Approximately 2.3V
22
23
41
42		 LG
SB
R
O		 Fuel injector No. 3
Fuel injector No. 1
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)
G04894542Courtesy of NISSAN NORTH AMERICA, INC.
[Engine is running] 
  • Warm-up condition 
  • Engine speed: 2, 000 rpm
 BATTERY VOLTAGE (11-14V)(1)
G04894543Courtesy of NISSAN NORTH AMERICA, INC.
25 P Heated oxygen sensor 2 heater [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 on load
 Approximately 5V(1)
G04894544Courtesy of NISSAN NORTH AMERICA, INC.
[Ignition switch: ON] 
  • Engine: Stopped

[Engine is running] 
  • Engine speed: Above 3, 600 rpm
 BATTERY VOLTAGE (11-14V)
32 GR EVAP control system pressure sensor [Ignition switch: ON]  Approximately 1.8-4.8V
34 BR Intake air temperature sensor [Engine is running]  Approximately 0-4.8V
Output voltage varies with intake air temperature.
45 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)
G04894545Courtesy of NISSAN NORTH AMERICA, INC.
[Engine is running] 
  • Engine speed: About 2, 000 rpm (More than 100 seconds after starting engine)
 Approximately 1V(1)
G04894546Courtesy of NISSAN NORTH AMERICA, INC.
47 L Sensor power supply (Throttle position sensor) [Ignition switch: ON]  Approximately 5V
48 SB Sensor power supply (EVAP control system pressure sensor) [Ignition switch: ON]  Approximately 5V
49 P 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
  • 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 P 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
61
62
80
81		 L
Y
GR
G		 Ignition signal No. 3
Ignition signal No. 1
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.
 0-0.1V(1)
G04894547Courtesy of NISSAN NORTH AMERICA, INC.
[Engine is running] 
  • Warm-up condition 
  • Engine speed: 2, 000 rpm
 0-0.2V(1)
G04894548Courtesy of NISSAN NORTH AMERICA, INC.
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 G Sensor power supply (Power steering pressure sensor) [Ignition switch: ON]  Approximately 5V
69 R 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 BR Refrigerant pressure sensor [Engine is running] 
  • Warm-up condition 
  • Both A/C switch and blower fan switch: ON (Compressor operates)
 1.0-4.0V
71 R Battery current sensor [Engine is running] 
  • Battery: Fully charged(2)
  • Idle speed
 Approximately 2.6-3.5V
73 Y Engine coolant temperature sensor [Engine is running]  Approximately 0-4.8V
Output voltage varies with engine coolant temperature.
74 W Heated oxygen sensor 2 [Engine is running] 
  • Revving engine from idle up 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 Sensor ground (Heated oxygen sensor 2) [Engine is running] 
  • Warm-up condition 
  • Idle speed
 Approximately 0V
82 B Sensor ground (Accelerator pedal position sensor 1) [Engine is running] 
  • Warm-up condition 
  • Idle speed
 Approximately 0V
83 B Sensor ground (Accelerator pedal position sensor 2) [Engine is running] 
  • Warm-up condition 
  • Idle speed
 Approximately 0V
85 W DATA link connector [Ignition switch: ON] 
  • CONSULT-II or GST: Disconnected.
 BATTERY VOLTAGE (11-14V)
86 P CAN communication line [Ignition switch: ON]  Approximately 2.3V
90 L 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 2.8V
98 GR Accelerator pedal position sensor 2 [Ignition switch: ON] 
  • Engine: Stopped
  • Accelerator pedal: Fully released
 0.3-0.45V
[Ignition switch: ON] 
  • Engine: Stopped
  • Accelerator pedal: Fully depressed
 Less than 2.4V
99 SB 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 LG Stop lamp switch [Ignition switch: ON] 
  • Brake pedal: Fully released
 Approximately 0V
[Ignition switch: ON] 
  • Brake pedal: Slightly depressed
 BATTERY VOLTAGE (11-14V)
102 G (A/T)
O (M/T)		 PNP switch [Ignition switch: ON] 
  • Shift lever: P or N (A/T), Neutral (M/T)
 Approximately 0V
[Ignition switch: ON] 
  • Shift 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 R Accelerator pedal position sensor 1 [Ignition switch: ON] 
  • Engine: Stopped
  • Accelerator pedal: Fully released
 0.6-0.95V
[Ignition switch: ON] 
  • Engine: Stopped
  • Accelerator pedal: Fully depressed
 Less than 4.75V
107 Y Fuel tank temperature sensor [Engine is running]  Approximately 0-4.8V
Output voltage varies with fuel tank temperature.
108 LG ASCD brake switch [Ignition switch: ON] 
  • Brake pedal: Slightly depressed (A/T)
  • Clutch pedal and/or clutch pedal: Slightly depressed (M/T)
 Approximately 0V
[Ignition switch: ON] 
  • Brake pedal: Fully released (A/T)
  • Clutch pedal and brake pedal: Fully released (M/T)
 BATTERY VOLTAGE (11-14V)
109 W/R Ignition switch [Ignition switch: OFF]  0V
[Ignition switch: ON]  BATTERY VOLTAGE (11-14V)
111 BR ECM relay (Self shut-off) [Engine is running] 
[Ignition switch: OFF] 
  • For a few seconds after turning ignition switch OFF
 0-1.0V
[Ignition switch: OFF] 
  • More than a few seconds after turning ignition switch OFF
 BATTERY VOLTAGE (11-14V)
113 V Fuel pump relay [Ignition switch: ON] 
  • For 1 second after turning ignition switch ON

[Engine is running] 		 0-1.0V
[Ignition switch: ON] 
  • More than 1 second after turning ignition switch ON
 BATTERY VOLTAGE (11-14V)
115
116		 B
GR		 ECM ground [Engine is running] 
  • Idle speed
 Body ground
117 G EVAP canister vent control valve [Ignition switch: ON]  BATTERY VOLTAGE (11-14V)
119
120		 R
P		 Power supply for ECM [Ignition switch: ON]  BATTERY VOLTAGE (11-14V)
121 R/B Power supply for ECM (Back-up) [Ignition switch: OFF]  BATTERY VOLTAGE (11-14V)
(1) Average voltage for pulse signal (Actual pulse signal can be confirmed by oscilloscope.) 
(2) Before measuring the terminal voltage, confirm that the battery is fully charged.  Refer to "SPECIFIC GRAVITY CHECK ".
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