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Home >> Infiniti >> 2013 >> JX35 FWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (Introduction) >> Ecu Diagnosis Information >> ECM >> Reference Value >> Physical Values
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Physical Values

NOTE:
  • ECM is located in the engine room left side near battery.
  • Specification data are reference values.
  • Pulse signal is measured by CONSULT.
Terminal No. Description Condition Value (Approx.)
+ - Signal name Input/Output
1 (R) 128 (B) Throttle control motor power supply Input [Ignition switch: ON] BATTERY VOLTAGE (11 - 14 V)
2 (G) 128 (B) Throttle control motor (Close) Output [Ignition switch: ON]
  • Engine stopped
  • Selector lever: D position
  • Accelerator pedal: Fully released
 0 - 14 V(1)
G08769120
3 (Y) 128 (B) A/F sensor 1 heater (bank 2) Output [Engine is running]
  • Warm-up condition
  • Idle speed

(More than 140 seconds after starting engine)		 2.9 - 8.8 V(1)
G08769121
4 (LG) 107 (W) Engine oil pressure sensor Input [Engine is running]
  • Warm-up condition
  • Idle speed
 1.3 V(1)
G08769122
[Engine is running]
  • Warm-up condition
  • Engine speed is 2, 000 RPM
 2.7 V(1)
G08769123
5 (W) 128 (B) Throttle control motor (Open) Output [Ignition switch: ON]
  • Engine stopped
  • Selector lever: D position
  • Accelerator pedal: Fully depressed
 0 - 14 V(1)
G08769124
[Ignition switch: ON]
  • Engine stopped
  • Selector lever: D position
  • Accelerator pedal: Fully released
 0 - 14 V(1)
G08769125
6 (BR) 128 (B) A/F sensor 1 heater (bank 1) Output [Engine is running]
  • Warm-up condition
  • Idle speed

    (More than 140 seconds after starting engine)

 2.9 - 8.8 V(1)
G08769126
9 (LG) 128 (B) Ignition signal No. 3 Output [Engine is running]
  • Warm-up condition
  • Idle speed
    NOTE: The pulse cycle changes depending on RPM at idle
 0 - 0.2 V(1)
G08769127
10 (LG) Ignition signal No. 2
11 (LG) Ignition signal No. 1
13 (LG) Ignition signal No. 6 [Engine is running]
  • Warm-up condition
  • Engine speed: 2, 000 RPM
 0.1 - 0.4 V(1)
G08769128
14 (LG) Ignition signal No. 5
15 (LG) Ignition signal No. 4
12 (B) - ECM ground - - -
16 (B) - ECM ground - - -
19 (R) - Sensor ground (Throttle position sensor) - - -
22 (B) 128 (B) Throttle position sensor 1 Input [Ignition switch: ON]
  • Engine stopped
  • Selector lever: D position
  • Accelerator pedal: Fully released
 More than 0.36 V
[Ignition switch: ON]
  • Engine stopped
  • Selector lever: D position
  • Accelerator pedal: Fully depressed
 Less than 4.75 V
23 (W) 128 (B) Throttle position sensor 2 Input [Ignition switch: ON]
  • Engine stopped
  • Selector lever: D position
  • Accelerator pedal: Fully released
 Less than 4.75 V
[Ignition switch: ON]
  • Engine stopped
  • Selector lever: D position
  • Accelerator pedal: Fully depressed
 More than 0.36 V
24 (G) 19 (R) Sensor power supply (Throttle position sensor) - [Ignition switch: ON] 5 V
26 (GR) 128 (B) Power supply for ECM (Backup) Input [Ignition switch: OFF] BATTERY VOLTAGE (11 - 14 V)
31 (V) 128 (B) ECM relay (Self shut-off) Output
  • [Engine is running]
  • [Ignition switch: OFF]

    A few seconds after turning ignition switch OFF

 0 - 1.5 V
[Ignition switch: OFF] More than a few seconds after turning ignition switch OFF BATTERY VOLTAGE (11 - 14 V)
33 (Y) 128 (B) Fuel injector No. 1 Output [Engine is running]
  • Warm-up condition
  • Idle speed
    NOTE: The pulse cycle changes depending on RPM at idle
 BATTERY VOLTAGE (11 - 14 V)(1)
G08769129
44 (V) Fuel injector No. 2
45 (V) Fuel injector No. 6
46 (Y) Fuel injector No. 5 [Engine is running]
  • Warm-up condition
  • Engine speed: 2, 000 RPM
 BATTERY VOLTAGE (11 - 14 V)(1)
G08769130
47 (V) Fuel injector No. 4
48 (Y) Fuel injector No. 3
34 (G) 128 (B) Throttle control motor relay Output [Ignition switch: ON → OFF] 0 - 1.0 V → BATTERY VOLTAGE (11 - 14 V) → 0 V
[Ignition switch: ON] 0 - 1.0 V
37 (SB) 128 (B) Heated oxygen sensor 2 heater (bank 1) Output [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
 10 V(1)
G08769131
  • [Ignition switch: ON] Engine stopped
  • [Engine is running] Engine speed: Above 3, 600 RPM
 BATTERY VOLTAGE (11 - 14 V)
38 (BR) 128 (B) Electronic controlled engine mount control solenoid valve Output [Engine is running] Idle speed 0 - 1.0 V
[Engine is running] Engine speed: More than 950 RPM BATTERY VOLTAGE (11 - 14 V)
39 (BR) 128 (B) VIAS control solenoid valve 1 Output [Engine is running]
  • Warm-up condition
  • Idle speed
 BATTERY VOLTAGE (11 - 14 V)
[Engine is running]
  • Warm-up condition
  • When revving engine up to 5, 000 RPM quickly
 BATTERY VOLTAGE (11 - 14 V)
↓
0 - 1.0 V
↓
BATTERY VOLTAGE (11 - 14 V)
40 (BR) 128 (B) VIAS control solenoid valve 2 Output [Engine is running]
  • Warm-up condition
  • Idle speed
 BATTERY VOLTAGE (11 - 14 V)
[Engine is running]
  • Warm-up condition
  • When revving engine up to 5, 000 RPM quickly
 BATTERY VOLTAGE (11 - 14 V)
↓
0 - 1.0 V
↓
BATTERY VOLTAGE (11 - 14 V)
41 (SB) 128 (B) Heated oxygen sensor 2 heater (bank 2) Output [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
 10 V(1)
G08769132
  • [Ignition switch: ON] Engine stopped
  • [Engine is running]
 Engine speed: Above 3, 600 RPM
BATTERY VOLTAGE (11 - 14 V)
42 (BR) 128 (B) EVAP canister purge volume control solenoid valve Output [Engine is running]
  • Idle speed
  • Accelerator pedal: Not depressed even slightly, after engine starting
 BATTERY VOLTAGE (11 - 14 V)(1)
G08769133
[Engine is running]
Engine speed: approximately 2, 000 RPM (More than 100 seconds after starting engine)		 BATTERY VOLTAGE (11 - 14 V)(1)
G08769134
43 (W) 128 (B) Fuel pump relay Output
  • [Ignition switch: ON]

    For 1 second after turning ignition switch ON

  • [Engine is running]
 0 - 1.0 V
54 (LG) 84 (Y) Sensor power supply [Crankshaft position sensor (POS)] - [Ignition switch: ON] 5 V
55 (BR) 128 (B) Intake valve timing control solenoid valve (bank 1) Output [Engine is running]
  • Warm-up condition
  • Idle speed
 BATTERY VOLTAGE (11 - 14 V)
[Engine is running]
  • Warm-up condition
  • Engine speed: 2, 000 RPM
 7 - 12 V(1)
G08769135
56 (Y) 128 (B) Intake valve timing control solenoid valve (bank 2) Output [Engine is running]
  • Warm-up condition
  • Idle speed
 BATTERY VOLTAGE (11 - 14 V)
[Engine is running]
  • Warm-up condition
  • Engine speed: 2, 000 RPM
 7 - 12 V(1)
G08769136
57 (L) 128 (B) Heated oxygen sensor 2 (bank 1) Input [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 - 1.0 V
58 (L) 128 (B) Heated oxygen sensor 2 (bank 2) Input [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 - 1.0 V
59 (B) - Sensor ground (Heated oxygen sensor 2) - - -
63 (SB) 64 (V) Refrigerant pressure sensor Input [Engine is running]
  • Warm-up condition
  • Both A/C switch and blower fan motor switch: ON (Compressor operates)
 1.0 - 4.0 V
64 (V) - Sensor ground (Refrigerant pressure sensor) - - -
66 (W) 68 (G) Battery current sensor Input [Engine is running]
  • Battery: Fully charged(3)
  • Idle speed
 2.6 - 3.5 V
67 (Y) 68 (G) Battery temperature sensor Input [Engine is running] 0 - 4.8 V Output voltage varies with battery temperature.
68 (G) - Sensor ground (Battery current sensor) - - -
69 (B) 128 (B) A/F sensor 1 (bank 1) Input [Engine is running]
  • Warm-up condition
  • Engine speed: 2, 000 RPM
 2.2 V Output voltage varies with air fuel ratio.
70 (BR) 76 (B) Engine coolant temperature sensor Input [Engine is running] 0 - 4.8 V Output voltage varies with engine coolant temperature.
73 (W) 128 (B) A/F sensor 1 (bank 1) Input [Ignition switch: ON] 1.8 V
74 (V) 80 (BR) Intake air temperature sensor Input [Engine is running] 0 - 4.8 V Output voltage varies with intake air temperature.
75 (LG) 68 (G) Sensor power supply (Battery current sensor) - [Ignition switch: ON] 5 V
76 (B) - Sensor ground (Engine coolant temperature sensor, engine oil temperature sensor) - - -
77 (B) 128 (B) A/F sensor 1 (bank 2) Input [Engine is running]
  • Warm-up condition
  • Engine speed: 2, 000 RPM
 2.2 V Output voltage varies with air fuel ratio.
78 (G) 76 (B) Engine oil temperature sensor Input [Engine is running] 0 - 4.8 V Output voltage varies with engine oil temperature.
80 (BR) - Sensor ground (Mass air flow sensor, intake air temperature sensor) - - -
81 (W) 128 (B) A/F sensor 1 (bank 2) Input [Ignition switch: ON] 1.8 V
82 (P) 80 (BR) Mass air flow sensor Input [Engine is running]
  • Warm-up condition
  • Idle speed
 0.9 - 1.2 V
[Engine is running]
  • Warm-up condition
  • Engine speed: 2, 500 RPM
 1.6 - 1.9 V
83 (BR) 88 (LG) Sensor power supply [Camshaft position sensor (PHASE) (bank 1)] - [Ignition switch: ON] 5 V
84 (Y) - Sensor ground [Crankshaft position sensor (POS)] - - -
85 (B) 91 (-) Knock sensor (bank 1) Input [Engine is running] Idle speed 2.5 V(2)
86 (W) 91 (-) Knock sensor (bank 2) Input [Engine is running] Idle speed 2.5 V(2)
87 (V) 92 (SB) Sensor power supply [Camshaft position sensor (PHASE) (bank 2)] - [Ignition switch: ON] 5 V
88 (LG) - Sensor ground [Camshaft position sensor (PHASE) (bank 1)] - - -
89 (L) 84 (Y) Crankshaft position sensor (POS) Input [Engine is running]
  • Warm-up condition
  • Idle speed
    NOTE: The pulse cycle changes depending on RPM at idle
 4.0 - 5.0 V(1)
G08769137
[Engine is running] Engine speed: 2, 000 RPM 4.0 - 5.0 V(1)
G08769138
91 (-) - Sensor ground [Knock sensor (bank 1), knock sensor (bank 2)] - - -
92 (SB) - Sensor ground [Camshaft position sensor (PHASE) (bank 2)] - - -
93 (LG) 92 (SB) Camshaft position sensor (PHASE) (bank 2) Input [Engine is running]
  • Warm-up condition
  • Idle speed
    NOTE: The pulse cycle changes depending on RPM at idle
 3.0 - 5.0 V(1)
G08769139
[Engine is running] Engine speed is 2, 000 RPM 3.0 - 5.0 V(1)
G08769140
94 (GR) 88 (LG) Camshaft position sensor (PHASE) (bank 1) Input [Engine is running]
  • Warm-up condition
  • Idle speed
    NOTE: The pulse cycle changes depending on RPM at idle
 3.0 - 5.0 V(1)
G08769141
[Engine is running] Engine speed is 2, 000 RPM 3.0 - 5.0 V(1)
G08769142
96 (P) 64 (V) Sensor power supply (Refrigerant pressure sensor) - [Ignition switch: ON] 5 V
97
(W)(4)
(R)(5)		 100
(R)(4)
(W)(5)		 Accelerator pedal position sensor 1 Input [Ignition switch: ON]
  • Engine stopped
  • Accelerator pedal: Fully released
 0.5 - 1.0 V
[Ignition switch: ON]
  • Engine stopped
  • Accelerator pedal: Fully depressed
 4.2 - 4.8 V
98
(P)(4)
(B)(5)		 116
(G)(4)
(L)(5)		 Accelerator pedal position sensor 2 Input [Ignition switch: ON]
  • Engine stopped
  • Accelerator pedal: Fully released
 0.25 - 0.50 V
[Ignition switch: ON]
  • Engine stopped
  • Accelerator pedal: Fully depressed
 2.0 - 2.5 V
99
(R)(4)
(G)(5)		 100
(R)(4)
(W)(5)		 Sensor power supply (Accelerator pedal position sensor 1) - [Ignition switch: ON] 5 V
100
(R)(4)
(W)(5)		 - Sensor ground (Accelerator pedal position sensor 1) - - -
101 (G) 108 (R) ASCD steering switch Input [Ignition switch: ON] ASCD steering switch: OFF 4 V
[Ignition switch: ON] MAIN switch: Pressed 0 V
[Ignition switch: ON] CANCEL switch: Pressed 1 V
[Ignition switch: ON] RESUME/ACCELERATE switch: Pressed 3 V
[Ignition switch: ON] SET/COAST switch: Pressed 2 V
ICC steering switch Input [Ignition switch: ON] ICC steering switch: OFF 4.2 V
[Ignition switch: ON] MAIN switch: Pressed 0 V
[Ignition switch: ON] CANCEL switch: Pressed 1.9 V
[Ignition switch: ON] RESUME/ACCELERATE switch: Pressed 3.7 V
[Ignition switch: ON] SET/COAST switch: Pressed 3.2 V
[Ignition switch: ON] DISTANCE switch: Pressed 2.6 V
[Ignition switch: ON] DYNAMIC DRIVE ASSISTANCE switch: Pressed 1.0 V
102 (O) 112 (G) EVAP control system pressure sensor Input [Ignition switch: ON] 1.8 - 4.8 V
103
(Y)(4)
(W)(5)		 116
(G)(4)
(L)(5)		 Sensor power supply (Accelerator pedal position sensor 2) - [Ignition switch: ON] 5 V
104 (P) - Data link connector Input/Output - -
106 (Y) 128 (B) EVAP canister vent control valve Output [Ignition switch: ON] BATTERY VOLTAGE (11 - 14 V)
107 (W) 112 (G) Sensor power supply (EVAP control system pressure sensor, engine oil pressure sensor) - [Ignition switch: ON] 5 V
108 (R) - Sensor ground (ASCD steering switch) - - -
109 (SB) 128 (B) Ignition switch Input [Ignition switch: OFF] 0 V
[Ignition switch: ON] BATTERY VOLTAGE (11 - 14 V)
111 (BR) 120 (LG) Fuel tank temperature sensor Input [Engine is running] 0 - 4.8 V Output voltage varies with fuel tank temperature.
112 (G) - Sensor ground (EVAP control system pressure sensor, engine oil pressure sensor) - - -
113 (P) - CAN communication line (CAN-L) Input/Output - -
114 (L) - CAN communication line (CAN-H) Input/Output - -
116
(G)(4)
(L)(5)		 - Sensor ground (Accelerator pedal position sensor 2) - - -
118 (W) 128 (B) PNP signal Input [Ignition switch: ON] Selector lever: P or N position BATTERY VOLTAGE (11 - 14 V)
[Ignition switch: ON] Selector lever: Except above position 0 V
120 (LG) - Sensor ground (Fuel tank temperature sensor) - - -
121 (LG) 128 (B) Power supply for ECM Input [Ignition switch: ON] BATTERY VOLTAGE (11 - 14 V)
122 (R) 128 (B) Stop lamp switch Input [Ignition switch: OFF] Brake pedal: Fully released 0 V
[Ignition switch: OFF] Brake pedal: Slightly depressed BATTERY VOLTAGE (11 - 14 V)
123
(B)
124
(B)		 - ECM ground - - -
126 (LG) 128 (B) Brake pedal position switch/ICC brake switch Input [Ignition switch: ON] Brake pedal: Slightly depressed 0 V
[Ignition switch: ON] Brake pedal: Fully released BATTERY VOLTAGE (11 - 14 V)
127
(B)
128
(B)		 - ECM ground - - -
(1) Average voltage for pulse signal (Actual pulse signal can be confirmed by oscilloscope.)
(2) This may vary depending on internal resistance of the tester.
(3) Before measuring the terminal voltage, confirm that the battery is fully charged. Refer to "HOW TO HANDLE BATTERY ".
(4) Without ICC.
(5) With ICC.
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