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Home >> Nissan-Datsun >> 2013 >> Maxima S >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - Component Testing >> 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. For this inspection, remove passenger side instrument lower panel.
  • Specification data are reference values.
  • Pulse signal is measured by CONSULT.
Terminal No. Description Condition Value (Approx.)
+ - Signal name Input/Output
1 (P/B) 112 (B) Fuel injector No. 6 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)
G08909082Courtesy of NISSAN NORTH AMERICA, INC.
3 (L/W) Fuel injector No. 5
29 (LG/R) Fuel injector No. 4
30 (R/Y) Fuel injector No. 3 [Engine is running]
  • Warm-up condition
  • Engine speed: 2, 000 RPM
BATTERY VOLTAGE (11 - 14 V)(1)
G08909083Courtesy of NISSAN NORTH AMERICA, INC.
31 (R/W) Fuel injector No. 2
32 (R/B) Fuel injector No. 1
2 (G/W) 112 (B) Throttle control motor relay power supply Input [Ignition switch: ON] BATTERY VOLTAGE (11 - 14 V)
4 (BR/Y) 112 (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)
G08909084Courtesy of NISSAN NORTH AMERICA, INC.
5 (L) 112 (B) Throttle control motor (Open) Output [Ignition switch: ON]
  • Engine stopped
  • Selector lever: D
  • Accelerator pedal: Fully depressed
0 - 14 V(1)
G08909085Courtesy of NISSAN NORTH AMERICA, INC.
[Ignition switch: ON]
  • Engine stopped
  • Selector lever: D
  • Accelerator pedal: Fully released
0 - 14 V(1)
G08909086Courtesy of NISSAN NORTH AMERICA, INC.
6 (P) 112 (B) Throttle control motor (Close) Output [Ignition switch: ON]
  • Engine stopped
  • Selector lever: D
  • Accelerator pedal: Fully released
0 - 14 V(1)
G08909087Courtesy of NISSAN NORTH AMERICA, INC.
8 (SB) 112 (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)
G08909088Courtesy of NISSAN NORTH AMERICA, INC.
9 (L/B) 112 (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)
G08909089Courtesy of NISSAN NORTH AMERICA, INC.
10 (G/R) Ignition signal No. 2
11 (Y/R) Ignition signal No. 1
18 (GR/R) Ignition signal No. 6 [Engine is running]
  • Warm-up condition
  • Engine speed: 2, 000 RPM
0.1 - 0.4 V(1)
G08909090Courtesy of NISSAN NORTH AMERICA, INC.
19 (P) Ignition signal No. 5
21 (W) Ignition signal No. 4
12 (B) - ECM ground - - -
13 (P/B) 112 (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)
G08909091Courtesy of NISSAN NORTH AMERICA, INC.
[Ignition switch: ON]
  • Engine stopped

[Engine is running]
  • Engine speed: Above 3, 600 RPM
BATTERY VOLTAGE (11 - 14 V)
14 (GR) 112 (B) Fuel pump relay Output [Ignition switch: ON]
  • For 1 second after turning ignition switch ON

[Engine is running]
0 - 1.5 V
[Ignition switch: ON]
  • More than 1 second after turning ignition switch ON
BATTERY VOLTAGE (11 - 14 V)
15 (O) 112 (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
16 (B/Y) - ECM ground - - -
17 (R) 112 (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)
G08909092Courtesy of NISSAN NORTH AMERICA, INC.
[Ignition switch: ON]
  • Engine stopped

[Engine is running]
  • Engine speed: Above 3, 600 RPM
BATTERY VOLTAGE (11 - 14 V)
24 (W/B) 112 (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)
25 (P/L) 112 (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)
G08909093Courtesy of NISSAN NORTH AMERICA, INC.
[Engine is running]
  • Engine speed: About 2, 000 RPM (More than 100 seconds after starting engine)
BATTERY VOLTAGE (11 - 14 V)(1)
G08909094Courtesy of NISSAN NORTH AMERICA, INC.
26 (GR/B) 112 (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)
27 (V) 112 (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)
28 (BR/W) 112 (B) Electronic controlled engine mount control solenoid valve Output [Engine is running]
  • For 2 seconds right after dropping to 950 RPM or less
0 - 1.0 V
[Engine is running]
  • After a lapse of 2 seconds after the engine speed reaches 950 RPM or less
2.0 - 3.0 V
[Engine is running]
  • Engine speed: More than 950 RPM
BATTERY VOLTAGE (11 - 14 V)
33 (W) 35 (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
34 (W/L) 35 (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
35 (B) - Sensor ground (Heated oxygen sensor 2) - - -
36 (B) - Sensor ground (Throttle position sensor) - - -
37 (W) 36 (B) Throttle position sensor 1 Input [Ignition switch: ON]
  • Engine stopped
  • Selector lever: D
  • Accelerator pedal: Fully released
More than 0.36 V
[Ignition switch: ON]
  • Engine stopped
  • Selector lever: D
  • Accelerator pedal: Fully depressed
Less than 4.75 V
38 (R) 36 (B) Throttle position sensor 2 Input [Ignition switch: ON]
  • Engine stopped
  • Selector lever: D
  • Accelerator pedal: Fully released
Less than 4.75 V
[Ignition switch: ON]
  • Engine stopped
  • Selector lever: D
  • Accelerator pedal: Fully depressed
More than 0.36 V
39 (R) 40 (G) 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
40 (G) - Sensor ground (Refrigerant pressure sensor) - - -
41 (O/B) 48 (B/P) Power steering pressure sensor Input [Engine is running]
  • Steering wheel: Being turned
0.5 - 4.5 V
[Engine is running]
  • Steering wheel: Not being turned
0.4 - 0.8 V
42 (BR) 44 (G/B) Battery current sensor Input [Engine is running]
  • Battery: Fully charged(3)
  • Idle speed
2.6 - 3.5 V
44 (G/B) - Sensor ground (Battery current sensor) - - -
45 (P) 49 (L) A/F sensor 1 (Bank 1) Input [Ignition switch: ON] 2.2 V
46 (Y) 52 (B/R) Engine coolant temperature sensor Input [Engine is running] 0 - 4.8 V
Output voltage varies with engine coolant temperature.
47 (G) 36 (B) Sensor power supply (Throttle position sensor) - [Ignition switch: ON] 5 V
48 (B/P) - Sensor ground (Power steering pressure sensor) - - -
49 (L) 112 (B) A/F sensor 1 (Bank 1) Input [Engine is running]
  • Warm-up condition
  • Engine speed: 2, 000 RPM
1.8 V
Output voltage varies with air fuel ratio.
50 (L/Y) 56 (G/B) Intake air temperature sensor Input [Engine is running] 0 - 4.8 V
Output voltage varies with intake air temperature.
51 (R/Y) 44 (G/B) Sensor power supply (Battery current sensor) - [Ignition switch: ON] 5 V
52 (B/R) - Sensor ground (Engine coolant temperature sensor/Engine oil temperature sensor) - - -
53 (V) 57 (LG) A/F sensor 1 (Bank 2) Input [Ignition switch: ON] 2.2 V
54 (G) 52 (B/R) Engine oil temperature sensor Input [Engine is running] 0 - 4.8 V
Output voltage varies with engine oil temperature.
55 (SB) 48 (B/P) Sensor power supply (Power steering pressure sensor) - [Ignition switch: ON] 5 V
56 (G/B) - Sensor ground (Mass air flow sensor/Intake air temperature sensor) - - -
57 (LG) 112 (B) A/F sensor 1 (Bank 2) Input [Engine is running]
  • Warm-up condition
  • Engine speed: 2, 000 RPM
1.8 V
Output voltage varies with air fuel ratio.
58 (O) 56 (G/B) 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
59 (G/W) 64 (B/R) Sensor power supply [Camshaft position sensor (PHASE) (Bank 1)/Exhaust valve timing control position sensor (Bank 1)] - [Ignition switch: ON] 5 V
60 (Y/B) - Sensor ground [Crankshaft position sensor (POS)] - - -
61 (B) 67 (GR) Knock sensor (Bank 1) Input [Engine is running]
  • Idle speed
2.5 V(2)
62 (W) 67 (GR) Knock sensor (Bank 2) Input [Engine is running]
  • Idle speed
2.5 V(2)
63 (R/W) 68 (Y/G) Sensor power supply [Camshaft position sensor (PHASE) (Bank 2)/Exhaust valve timing control position sensor (Bank 2)] - [Ignition switch: ON] 5 V
64 (B/R) - Sensor ground [Camshaft position sensor (PHASE) (Bank 1)/Exhaust valve timing control position sensor (Bank 1)] - - -
65 (W/B) 60 (Y/B) 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)
G08909095Courtesy of NISSAN NORTH AMERICA, INC.
[Engine is running]
  • Engine speed: 2, 000 RPM
4.0 - 5.0 V(1)
G08909096Courtesy of NISSAN NORTH AMERICA, INC.
66 (LG/R) 64 (B/R) Exhaust valve timing control position sensor (Bank 1) 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)
G08909097Courtesy of NISSAN NORTH AMERICA, INC.
[Engine is running]
  • Warm-up condition
  • Engine speed is 2, 000 RPM
4.0 - 5.0 V(1)
G08909098Courtesy of NISSAN NORTH AMERICA, INC.
67 (GR) - Sensor ground (Knock sensor) - - -
68 (Y/G) - Sensor ground [Camshaft position sensor (PHASE) (Bank 2)/Exhaust valve timing control position sensor (Bank 2)] - - -
69 (BR/W) 68 (Y/G) 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)
G08909099Courtesy of NISSAN NORTH AMERICA, INC.
[Engine is running]
  • Engine speed is 2, 000 RPM
3.0 - 5.0 V(1)
G08909100Courtesy of NISSAN NORTH AMERICA, INC.
70 (W/R) 64 (B/R) 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)
G08909101Courtesy of NISSAN NORTH AMERICA, INC.
[Engine is running]
  • Engine speed is 2, 000 RPM
3.0 - 5.0 V(1)
G08909102Courtesy of NISSAN NORTH AMERICA, INC.
71 (Y/V) 68 (Y/G) Exhaust valve timing control position sensor (Bank 2) 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)
G08909103Courtesy of NISSAN NORTH AMERICA, INC.
[Engine is running]
  • Warm-up condition
  • Engine speed is 2, 000 RPM
4.0 - 5.0 V(1)
G08909104Courtesy of NISSAN NORTH AMERICA, INC.
72 (BR/W) 40 (G) Sensor power supply (Refrigerant pressure sensor) - [Ignition switch: ON] 5 V
75 (Y) 112 (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)
G08909105Courtesy of NISSAN NORTH AMERICA, INC.
76 (R/G) 60 (Y/B) Sensor power supply [Crankshaft position sensor (POS)] - [Ignition switch: ON] 5 V
77 (W/L) 112 (B) Power supply for ECM (Backup) Input [Ignition switch: OFF] BATTERY VOLTAGE (11 - 14 V)
78 (R/L) 112 (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)
G08909106Courtesy of NISSAN NORTH AMERICA, INC.
79 (P/L) 112 (B) Exhaust valve timing control magnet retarder (Bank 1) Output [Engine is running]
  • Warm-up condition
  • Idle speed
BATTERY VOLTAGE (11 - 14 V)
[Engine is running]
  • Warm-up condition
  • Around 2, 500 RPM while the engine speed is rising
7 - 12 V(1)
G08909107Courtesy of NISSAN NORTH AMERICA, INC.
80 (SB) 112 (B) Exhaust valve timing control magnet retarder (Bank 2) Output [Engine is running]
  • Warm-up condition
  • Idle speed
BATTERY VOLTAGE (11 - 14 V)
[Engine is running]
  • Warm-up condition
  • Around 2, 500 RPM while the engine speed is rising
7 - 12 V(1)
G08909108Courtesy of NISSAN NORTH AMERICA, INC.
81 (W) 84 (B) Accelerator pedal position sensor 1 Input [Ignition switch: ON]
  • Engine stopped
  • Accelerator pedal: Fully released
0.65 - 0.87 V
[Ignition switch: ON]
  • Engine stopped
  • Accelerator pedal: Fully depressed
More than 4.3 V
82 (O) 100 (G) Accelerator pedal position sensor 2 Input [Ignition switch: ON]
  • Engine stopped
  • Accelerator pedal: Fully released
0.28 - 0.48 V
[Ignition switch: ON]
  • Engine stopped
  • Accelerator pedal: Fully depressed
More than 2.0 V
83 (GR) 84 (B) Sensor power supply (Accelerator pedal position sensor 1) - [Ignition switch: ON] 5 V
84 (B) - Sensor ground (Accelerator pedal position sensor 1) - - -
85 (Y) 92 (BR) 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
86 (SB) 96 (GR) EVAP control system pressure sensor Input [Ignition switch: ON] 1.8 - 4.8 V
87 (BR) 100 (G) Sensor power supply (Accelerator pedal position sensor 2) - [Ignition switch: ON] 5 V
88 (O) - Data link connector Input/Output - -
91 (V) 96 (GR) Sensor power supply (EVAP control system pressure sensor) - [Ignition switch: ON] 5 V
92 (BR) - Sensor ground (ASCD steering switch) - - -
93 (Y) 112 (B) Ignition switch Input [Ignition switch: OFF] 0 V
[Ignition switch: ON] BATTERY VOLTAGE (11 - 14 V)
94 (GR) 112 (B) Engine speed output signal Output [Engine is running]
  • Warm-up condition
  • Idle speed
    NOTE: The pulse cycle changes depending on RPM at idle
1 V(1)
G08909109Courtesy of NISSAN NORTH AMERICA, INC.
[Engine is running]
  • Engine speed: 2, 000 RPM
1 V(1)
G08909110Courtesy of NISSAN NORTH AMERICA, INC.
95 (Y) 104 (R) Fuel tank temperature sensor Input [Engine is running] 0 - 4.8 V
Output voltage varies with fuel tank temperature.
96 (GR) - Sensor ground (EVAP control system pressure sensor) - - -
97 (P) - CAN communication line Input/Output - -
98 (L) - CAN communication line Input/Output - -
100 (G) - Sensor ground (Accelerator pedal position sensor 2) - - -
102 (R) 112 (B) PNP signal Input [Ignition switch: ON]
  • Selector lever: P or N
BATTERY VOLTAGE (11 - 14 V)
[Ignition switch: ON]
  • Selector lever: Except above
0 V
104 (P) - Sensor ground (Fuel tank temperature sensor) - - -
105 (V) 112 (B) Power supply for ECM Input [Ignition switch: ON] BATTERY VOLTAGE (11 - 14 V)
106 (SB) 112 (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)
107 (B)
108 (B)
- ECM ground - - -
109 (W) 112 (B) EVAP canister vent control valve Output [Ignition switch: ON] BATTERY VOLTAGE (11 - 14 V)
110 (G) 112 (B) ASCD brake switch Input [Ignition switch: ON]
  • Brake pedal: Slightly depressed
0 V
[Ignition switch: ON]
  • Brake pedal: Fully released
BATTERY VOLTAGE (11 - 14 V)
111 (B)
112 (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 ".