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Home >> Nissan-Datsun >> 2005 >> X-Trail LE >> 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 ECM's transistor. Use a ground other than ECM terminals, such as the ground.
ITEM SPECIFICATION

TERMINAL NO. WIRE COLOR ITEM CONDITION DATA (DC Voltage)
1 B ECM ground [Engine is running] 
  • Idle speed
 Body ground
3  
W/B		 Throttle control motor power supply [Ignition switch: ON]  BATTERY VOLTAGE (11 - 14V)
4 G Throttle control motor (Close) [Ignition switch: ON] 
  • Engine stopped
  • Shift lever: D (A/T), 1ST (M/T)
  • Accelerator pedal: Fully released
 0 - 14V(1)
G04894536Courtesy of NISSAN MOTOR CO., U.S.A.
5 R Throttle control motor (Open) [Ignition switch: ON] 
  • Engine stopped
  • Shift lever: D (A/T), 1ST (M/T)
  • Accelerator pedal: Fully depressed
 0 - 14V(1)
G06152313Courtesy of NISSAN MOTOR CO., U.S.A.
11 Y 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)
G06152314Courtesy of NISSAN MOTOR CO., U.S.A.
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 L/W 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)
G06152315Courtesy of NISSAN MOTOR CO., U.S.A.
[Engine is running] 
  • Engine speed is 2, 000 rpm.
 1.0 - 4.0V(1)
G06152316Courtesy of NISSAN MOTOR CO., U.S.A.
14 PU/R 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)
G06152317Courtesy of NISSAN MOTOR CO., U.S.A.
[Engine is running] 
  • Engine speed is 2, 000 rpm
 Approximately 3.0V(1)
G06152318Courtesy of NISSAN MOTOR CO., U.S.A.
15 W Knock sensor [Engine is running] 
  • Idle speed
 Approximately 2.5V
22
23
41
42		 G/B
R/B
L/B
Y/B		 Injector No. 3
Injector No. 1
Injector No. 4
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)
G06152319Courtesy of NISSAN MOTOR CO., U.S.A.
[Engine is running] 
  • Warm-up condition 
  • Engine speed is 2, 000 rpm
 BATTERY VOLTAGE (11 - 14V)(1)
G06152320Courtesy of NISSAN MOTOR CO., U.S.A.
24 G/W Heated oxygen sensor 1 heater [Engine is running] 
  • Warm-up condition 
  • Engine speed is below 3, 600 rpm.
 Approximately 7.0V(1)
G06152321Courtesy of NISSAN MOTOR CO., U.S.A.
[Engine is running] 
  • Engine speed is above 3, 600 rpm.
 BATTERY VOLTAGE (11 - 14V)
25 PU/R Heated oxygen sensor 2 heater [Engine is running] 
  • Warm-up condition
  • Engine speed: Below 3, 600 rpm after the following conditions are met.
  • Keeping the engine speed between 3, 500 and 4, 000 rpm for 1 minute and at idle for 1 minute under on load
 0 - 1.0V
[Ignition switch: ON] 
  • Engine stopped.

[Engine is running] 
  • Engine speed is above 3, 600 rpm.
 BATTERY VOLTAGE (11 - 14V)
29 Y VIAS control solenoid valve [Engine is running] 
  • Idle speed
 BATTERY VOLTAGE (11 - 14V)
[Engine is running] 
  • Engine speed is above 5, 000 rpm
 0 - 1.0V
32 L/W EVAP control system pressure sensor [Ignition switch: ON]  Approximately 1.8 - 4.8V
34 Y/G Intake air temperature sensor [Engine is running]  Approximately 0 - 4.8V
Output voltage varies with intake air temperature.
35 P/L Heated oxygen sensor 1 [Engine is running] 
  • Warm-up condition
  • Engine speed is 2, 000 rpm
 0 - Approximately 1.0V (Periodically change)
45 P EVAP canister purge volume control solenoid valve [Engine is running] 
  • Idle speed
 BATTERY VOLTAGE (11 - 14V)(1)
G06152322Courtesy of NISSAN MOTOR CO., U.S.A.
[Engine is running] 
  • Engine speed is about 2, 000 rpm (More than 100 seconds after starting engine)
 Approximately 10V(1)
G06152323Courtesy of NISSAN MOTOR CO., U.S.A.
47 R Sensor power supply (Throttle position sensor) [Ignition switch: ON]  Approximately 5V
48 L Sensor power supply (EVAP control system pressure sensor) [Ignition switch: ON]  Approximately 5V
49 R 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), 1ST (M/T)
  • Accelerator pedal: Fully released
 More than 0.36V
[Ignition switch: ON] 
  • Engine stopped
  • Shift lever: D (A/T), 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 - 1.1V
[Engine is running] 
  • Warm-up condition
  • Engine speed is 2, 500 rpm.
 1.6 - 1.9V
61
62
80
81		 L/R
B/R
GY/R
PU		 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)
G06152324Courtesy of NISSAN MOTOR CO., U.S.A.
[Engine is running] 
  • Warm-up condition
  • Engine speed is 2, 000 rpm.
 0 - 0.2V(1)
G06152325Courtesy 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 R 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), 1ST (M/T)
  • Accelerator pedal: Fully released
 Less than 4.75V
[Ignition switch: ON] 
  • Engine stopped
  • Shift lever: D (A/T), 1ST (M/T)
  • Accelerator pedal: Fully depressed
 More than 0.36V
70 Y Refrigerant pressure sensor [Engine is running] 
  • Warm-up condition
  • Both A/C switch and blower switch are ON

(Compressor operates.)		 1.0 - 4.0V
73 BR/Y Engine coolant temperature sensor [Engine is running]  Approximately 0 - 4.8V
Output voltage varies with engine coolant temperature.
74 OR/B Heated oxygen sensor 2 [Engine is running] 
  • Warm-up condition
  • Revving engine from idle up to 3, 000 rpm quickly after the following conditions are met.
  • 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 R/Y Sensor ground (Accelerator pedal position sensor 1) [Engine is running] 
  • Warm-up condition 
  • Idle speed
 Approximately 0V
83 L Sensor ground (Accelerator pedal position sensor 2) [Engine is running] 
  • Warm-up condition 
  • Idle speed
 Approximately 0V
84 L/Y Electrical load signal (Headlamp signal) [Lighting switch: ON] 
  • Lighting switch: 1st or 2nd
 BATTERY VOLTAGE (11 - 14V)
[Lighting switch: ON] 
  • Lighting switch: OFF
 Approximately 0V
85 LG DATA link connector [Ignition switch: ON] 
  • CONSULT-II or GST is disconnected.
 BATTERY VOLTAGE (11 - 14V)
86 GY/R CAN communication line [Ignition switch: ON]  Approximately 2.3V
89 G Cooling fan relay (High) [Engine is running] 
  • Cooling fan: Not operating
 BATTERY VOLTAGE (11 - 14V)
[Engine is running] 
  • Cooling fan: High speed operating
 0 - 1.0V
90 R Sensor power supply (Accelerator pedal position sensor 1) [Ignition switch: ON]  Approximately 5V
91 BR/Y Sensor power supply (Accelerator pedal position sensor 2) [Ignition switch: ON]  Approximately 5V
93 BR Electrical load signal (Rear window defogger signal) [Ignition switch: ON] 
  • Rear window defogger switch: ON
 BATTERY VOLTAGE (11 - 14V)
[Ignition switch: ON] 
  • Rear window defogger switch: OFF
 Approximately 0V
94 G/R CAN communication line [Ignition switch: ON]  Approximately 2.8V
96 LG/B Heater fan switch [Engine is running] 
  • Heater fan switch: ON
 Approximately 0V
[Engine is running] 
  • Heater fan switch: OFF
 BATTERY VOLTAGE (11 - 14V)
97 PU Cooling fan relay (Low) [Engine is running] 
  • cooling fan is not operating
 BATTERY VOLTAGE (11 - 14V)
[Engine is running] 
  • Cooling fan is low speed operating
 0 - 1.0V
98 B/W Accelerator pedal position sensor 2 [Ignition switch: ON] 
  • Engine stopped
  • Accelerator pedal: Fully released
 0.15 - 0.6V
[Ignition switch: ON] 
  • Engine stopped
  • Accelerator pedal: Fully depressed
 1.95 - 2.4V
99 W/R ASCD steering switch [Ignition switch: ON] 
  • ASCD steering switch: OFF
 Approximately 4V
[Ignition switch: ON] 
  • MAIN (CRUISE) switch: Pressed
 Approximately 0V
[Ignition switch: ON] 
  • CANCEL switch: Pressed
 Approximately 1V
[Ignition switch: ON] 
  • RESUME/ACCEL switch: Pressed
 Approximately 3V
[Ignition switch: ON] 
  • SET/COAST switch: Pressed
 Approximately 2V
101 P 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 W/B 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
 3.9 - 4.7V
107 P/L Fuel tank temperature sensor [Engine is running]  Approximately 0 - 4.8V
Output voltage varies with fuel tank temperature.
108 GY/L 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 B/R Ignition switch [Ignition switch: OFF]  0V
[Ignition switch: ON]  BATTERY VOLTAGE (11 - 14V)
110 L/R Air conditioner switch signal [Engine is running] 
  • Both A/C switch and blower switch: ON
 Approximately 0V
[Engine is running] 
  • A/C switch is OFF
 BATTERY VOLTAGE (11 - 14V)
111 G/W ECM relay (Self shut-off) [Engine is running] 
[Ignition switch: OFF] 
  • 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)
114 B/OR 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
B		 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		 SB
GY		 Power supply for ECM [Ignition switch: ON]  BATTERY VOLTAGE (11 - 14V)
121 W/L 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.)
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