2008 NISSAN LATIO sensor

TROUBLE DIAGNOSIS
EC-93
< SERVICE INFORMATION >
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Engine Control Component Parts LocationINFOID:0000000001702590
1. Ignition coil (with power transistor)
and spark plug2. Intake valve timing control solenoid
valve3. Refrigerant pressure sensor
4. Knock sensor 5. Fuel injector 6. Cooling fan motor
7. Camshaft position sensor (PHASE) 8. IPDM E/R 9. ECM
10. Mass air flow sensor
(with intake air temperature sensor)11. Engine coolant temperature sensor 12. Electric throttle control actuator
(with built-in throttle position sensor,
throttle control motor)
13. EVAP canister purge volume control
solenoid valve
PBIB3261E

EC-94
< SERVICE INFORMATION >
TROUBLE DIAGNOSIS
: Vehicle front
1. Mass air flow sensor
(with intake air temperature sensor)2. Engine coolant temperature sensor 3. Electric throttle control actuator
(with built in throttle position sensor,
throttle control motor)
4. PCV valve 5. Cooling fan motor 6. Resistor
7. Refrigerant pressure sensor
BBIA0724E

TROUBLE DIAGNOSIS
EC-95
< SERVICE INFORMATION >
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: Vehicle front
1. Intake valve timing control solenoid
valve2. Knock sensor 3. IPDM E/R
4. Fuel pump fuse (15A) 5. Fuel level sensor unit and fuel pump
harness connector (view with in-
spection hole cover removed)6. Fuel level sensor unit and fuel pump
7. Fuel pressure regulator 8. Fuel level sensor 9. Fuel tank temperature sensor
10. Ignition coil
(with power transistor) and spark plug11. Fuel injector
BBIA0725E

EC-96
< SERVICE INFORMATION >
TROUBLE DIAGNOSIS
:Vehicle front
1. Crankshaft position sensor (POS) 2. Camshaft position sensor (PHASE) 3. EVAP canister purge volume control
solenoid valve
4. EVAP service port 5. ECM harness connector 6. ECM
7. Stop lamp switch 8. Accelerator pedal position sensor
BBIA0727E

TROUBLE DIAGNOSIS
EC-97
< SERVICE INFORMATION >
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: Vehicle front
1. Air fuel ratio (A/F) sensor 1 2. Three way catalyst (Manifold) 3. Heated oxygen sensor 2
4. Three way catalyst (Under floor) 5. Muffler 6. Air fuel ratio (A/F) sensor 1 harness
connector
7. Heated oxygen sensor 2 harness
connector
BBIA0726E

EC-102
< SERVICE INFORMATION >
TROUBLE DIAGNOSIS
ECM Harness Connector Terminal Layout
INFOID:0000000001702593
ECM Terminal and Reference ValueINFOID:0000000001702594
PREPARATION
1. ECM (1) is located in the engine room left side near battery.
• : Vehicle front
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 dam-
age to the ECMs transistor. Use a ground other than ECM terminals, such as the ground.
PBIA9221J
PBIB2959E
TERMI-
NAL
NO.WIRE
COLORITEM CONDITION DATA (DC Voltage)
1LThrottle control motor
(Open)[Ignition switch: ON]
• Engine stopped
• Shift lever: D (A/T, CVT), 1st (M/T)
• Accelerator pedal: Fully depressedApproximately 3.2V
2SBThrottle control motor power
supply[Ignition switch: ON]BATTERY VOLTAGE
(11 - 14V)
3 G A/F sensor 1 heater[Engine is running]
•Warm-up condition
• Idle speed
(More than 140 seconds after starting en-
gine)Approximately 2.9 - 8.8V
PBIA8150J
PBIA8148J

TROUBLE DIAGNOSIS
EC-103
< SERVICE INFORMATION >
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4 P Throttle control motor (Close)[Ignition switch: ON]
• Engine stopped
• Shift lever: D (A/T, CVT), 1st (M/T)
• Accelerator pedal: Fully releasedApproximately 1.8V
5GHeated 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 no load.Approximately 10V
[Ignition switch: ON]
• Engine stopped
[Engine is running]
• Engine speed: Above 3,600 rpm.BATTERY VOLTAGE
(11 - 14V)
9PEVAP canister purge volume
control solenoid valve[Engine is running]
• Idle speed
• Accelerator pedal: Not depressed even
slightly, after engine starting.BATTERY VOLTAGE
(11 - 14V)
[Engine is running]
• Engine speed: About 2,000 rpm (More than
100 seconds after starting engine)Approximately 10V
10
11B
BECM ground[Engine is running]
• Idle speedBody ground
13 L Tachometer signal[Engine is running]
•Warm-up condition
• Idle speed
NOTE:
The pulse cycle changes depending on rpm
at idle.3 - 5V
[Engine is running]
• Warm-up condition
• Engine speed: 2,000 rpm.3 - 5V TERMI-
NAL
NO.WIRE
COLORITEM CONDITION DATA (DC Voltage)
PBIA8149J
PBIA8148J
PBIB0050E
PBIB0520E
PBIA8164J
PBIA8165J

TROUBLE DIAGNOSIS
EC-105
< SERVICE INFORMATION >
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33 LG Throttle position sensor 1[Ignition switch: ON]
• Engine stopped
• Shift lever: D (A/T, CVT), 1st (M/T)
• Accelerator pedal: Fully releasedMore than 0.36V
[Ignition switch: ON]
• Engine stopped
• Shift lever: D (A/T, CVT), 1st (M/T)
• Accelerator pedal: Fully depressedLess than 4.75V
34 O Throttle position sensor 2[Ignition switch: ON]
• Engine stopped
• Shift lever: D (A/T, CVT), 1st (M/T)
• Accelerator pedal: Fully releasedLess than 4.75V
[Ignition switch: ON]
• Engine stopped
• Shift lever: D (A/T, CVT), 1st (M/T)
• Accelerator pedal: Fully depressedMore than 0.36V
36 YSensor ground
(Throttle position sensor)[Engine is running]
•Warm-up condition
• Idle speedApproximately 0V
37 W Knock sensor[Engine is running]
• Idle speedApproximately 2.5V
38 PEngine coolant temperature
sensor[Engine is running]Approximately 0 - 4.8V
Output voltage varies with en-
gine coolant temperature.
40 —Sensor ground
(Knock sensor)[Engine is running]
•Warm-up condition
• Idle speedApproximately 0V
41 GR Refrigerant pressure sensor[Engine is running]
•Warm-up condition
• Both A/C switch and blower fan switch: ON
(Compressor operates.)1.0 - 4.0V
42 VEVAP control system pres-
sure sensor[Ignition switch: ON]Approximately 1.8 - 4.8V
43 PFuel tank temperature sen-
sor[Engine is running]Approximately 0 - 4.8V
Output voltage varies with fuel
tank temperature
44 BSensor ground
(Engine coolant temperature
sensor)[Engine is running]
•Warm-up condition
• Idle speedApproximately 0V
45 G Mass air flow sensor[Engine is running]
•Warm-up condition
• Idle speed0.8 - 1.1V
[Engine is running]
•Warm-up condition
• Engine speed: 2,500 rpm1.4 - 1.7V
46 VIntake air temperature
sensor[Engine is running]Approximately 0 - 4.8V
Output voltage varies with intake
air temperature.
48 BRSensor ground
(Refrigerant pressure sen-
sor)[Engine is running]
•Warm-up condition
• Idle speed
Approximately 0V
49 W A/F sensor 1[Engine is running]
•Warm-up condition
• Engine speed: 2,000 rpmApproximately 1.8V
Output voltage varies with air fuel
ratio. TERMI-
NAL
NO.WIRE
COLORITEM CONDITION DATA (DC Voltage)