NISSAN LATIO 2010 Service Repair Manual

EC-446
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ON BOARD REFUELING VAPOR RECOVERY (ORVR)
17.CHECK ONE-WAY FUEL VALVE-I
Check one-way valve for clogging.
Is the inspection result normal?
YES >> GO TO 18.
NO >> Repair or replace one-way fuel valve with fuel tank.
18.CHECK ONE-WAY FUEL VALVE-II
1. Make sure that fuel is drained from the tank.
2. Remove fuel filler tube and hose.
3. Check one-way fuel valve for operation as per the following. When a stick is inserted, the valve should open, when removing
stick it should close.
Do not drop any material into the tank.
Is the inspection result normal?
YES >> INSPECTION END
NO >> Replace fuel filler tube or replace one-way fuel valve with fuel tank.
Component Inspection (Refueling EVAP vapor cut valve)INFOID:0000000005398627
1.INSPECTION START
Do you have CONSULT-III?
Do you have CONSULT-III?
YES >> GO TO 2.
NO >> GO TO 3.
2.CHECK REFUELING EVAP VAPOR CUT VALVE
With CONSULT-III
1. Remove fuel tank. Refer to FL-12, "
Removal and Installation".
2. Drain fuel from the tank as per the following:
- Remove fuel feed hose located on the fuel gauge retainer.
- Connect a spare fuel hose, one side to fuel gauge re tainer where the hose was removed and the other
side to a fuel container.
- Drain fuel using “FUEL PUMP RELAY” in “ACTIVE TEST” mode with CONSULT-III.
3. Check refueling EVAP vapor cut valve for being stuck to close as per the following.
Blow air into the refueling EVAP vapor cut valv e (from the end of EVAP/ORVR line hose), and check that
the air flows freely into the tank.
4. Check refueling EVAP vapor cut valve for being stuck to open as per the following.
- Connect vacuum pump to hose end.
- Remove fuel gauge retainer with fuel gauge unit. Always replace O-ri ng with new one.
- Put fuel tank upside down.
- Apply vacuum pressure to hose end [ −13.3 kPa ( −0.136 kg/cm
3, −1.93 psi)] with fuel gauge retainer
remaining open and check that the pressure is applicable.
SEF665U
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ON BOARD REFUELING VAPOR RECOVERY (ORVR)EC-447
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Is the inspection result normal?
YES >> INSPECTION END
NO >> Replace refueling EVAP vapor cut valve with fuel tank.
3.CHECK REFUELING EVAP VAPOR CUT VALVE
Without CONSULT-III
1. Remove fuel tank. Refer to FL-12, "
Removal and Installation".
2. Drain fuel from the tank as per the following:
- Remove fuel gauge retainer.
- Drain fuel from the tank using a handy pump into a fuel container.
3. Check refueling EVAP vapor cut valve for being stuck to close as per the following. Blow air into the refueling EVAP vapor cut valv e (from the end of EVAP/ORVR line hose), and check that
the air flows freely into the tank.
4. Check refueling EVAP vapor cut valve for being stuck to open as per the following.
- Connect vacuum pump to hose end.
- Remove fuel gauge retainer with fuel gauge unit. Always replace O-ring with new one.
- Put fuel tank upside down.
- Apply vacuum pressure to hose end [ −13.3 kPa ( −0.136 kg/cm
3, −1.93 psi)] with fuel gauge retainer
remaining open and check that the pressure is applicable.
1. Filler tube 2. Recirculation line3. EVAP/ORVR line
4. Vacuum/pressure handy pump 5. Fuel tank
BBIA0694E
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EC-448
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ON BOARD REFUELING VAPOR RECOVERY (ORVR)
Is the inspection result normal?
YES >> INSPECTION END
NO >> Replace refueling EVAP vapor cut valve with fuel tank.
Component Inspection
(Drain filter)INFOID:0000000005398628
1.CHECK DRAIN FILTER
1. Check visually for insect nests in the drain filter air inlet.
2. Check visually for cracks or flaws in the appearance.
3. Check visually for cracks or flaws in the hose.
4. Blow air into port A and check t hat it flows freely out of port B.
5. Block port B.
6. Blow air into port A and check that there is no leakage.
Is the inspection result normal?
YES >> INSPECTION END
NO >> Replace drain filter.
1. Filler tube 2. Recirculation line3. EVAP/ORVR line
4. Vacuum/pressure handy pump 5. Fuel tank
BBIA0694E
PBIB3641E
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POSITIVE CRANKCASE VENTILATIONEC-449
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POSITIVE CRANKCASE VENTILATION
DescriptionINFOID:0000000005398629
This system returns blow-by gas to the intake manifold.
The positive crankcase ventilation (PCV) valve is prov
ided to conduct crankcase blow-by gas to the intake
manifold.
During partial throttle operation of the engine, the intake manifold
sucks the blow-by gas through the PCV valve.
Normally, the capacity of the valve is sufficient to handle any blow-by
and a small amount of ventilating air.
The ventilating air is drawn from t he air inlet tubes into the crank-
case. In this process the air passes through the hose connecting air
inlet tubes to rocker cover.
Under full-throttle condition, the manifold vacuum is insufficient to
draw the blow-by flow through the valve. The flow goes through the
hose connection in the reverse direction.
On vehicles with an excessively high blow-by, the valve does not
meet the requirement. This is because some of the flow will go
through the hose connection to the air inlet tubes under all conditions.
Component InspectionINFOID:0000000005398630
1.CHECK PCV VALVE
With engine running at idle, remove PCV valve from rocker cover. A
properly working valve makes a hissing noise as air passes through
it. A strong vacuum should be felt immediately when a finger is
placed over valve inlet.
Is the inspection result normal?
YES >> INSPECTION END
NO >> Replace PCV valve.
PBIB2962E
PBIB1588E
PBIB1589E
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EC-450
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REFRIGERANT PRESSURE SENSOR
REFRIGERANT PRESSURE SENSOR
DescriptionINFOID:0000000005398631
The refrigerant pressure sensor is installed at the condenser of the air conditioner system. The sensor uses an
electrostatic volume pressure transducer to convert refrigerant pressure to voltage. The voltage signal is sent
to ECM, and ECM controls cooling fan system.
Component Function CheckINFOID:0000000005398632
1.CHECK REFRIGERANT PRESSURE SENSOR OVERALL FUNCTION
1. Start engine and warm it up to normal operating temperature.
2. Turn A/C switch and blower fan switch ON.
3. Check the voltage between ECM harness connector and ground.
Is the inspection result normal?
YES >> INSPECTION END
NO >> Go to EC-451, "
Diagnosis Procedure".
PBIB2657E
ECM Ground Voltage
Connector Terminal
F11 41
(Refrigerant pressure sensor signal) Ground 1.0 - 4.0V
PBIA9574J
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REFRIGERANT PRESSURE SENSOREC-451
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Wiring DiagramINFOID:0000000005398633
Diagnosis ProcedureINFOID:0000000005398634
1.CHECK GROUND CONNECTION
1. Turn A/C switch and blower fan switch OFF.
2. Stop engine.
3. Turn ignition switch OFF.
BBWA2662E
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EC-452
< COMPONENT DIAGNOSIS >[HR16DE]
REFRIGERANT PRESSURE SENSOR
4. Check ground connections E15, E24. Refer to
EC-119, "Ground Inspection".
Is the inspection result normal?
YES >> GO TO 2.
NO >> Repair or replace ground connection.
2.CHECK REFRIGERANT PRESSURE SENSOR POWER SUPPLY CIRCUIT
1. Disconnect refrigerant pressure sensor harness connector.
2. Turn ignition switch ON.
3. Check the voltage between refrigerant pressure sensor harness connector and ground.
Is the inspection result normal?
YES >> GO TO 4.
NO >> GO TO 3.
3.DETECT MALFUNCTIONING PART
Check the following.
• Harness connectors F8, E8
• Harness for open or short between ECM and refrigerant pressure sensor
>> Repair open circuit or short to ground or short to power in harness or connectors.
4.CHECK REFRIGERANT PRESSURE SENSOR GROUND CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Check the continuity between refrigerant pre ssure sensor harness connector and ECM harness connec-
tor.
4. Also check harness for short to ground and short to power.
Is the inspection result normal?
YES >> GO TO 6.
NO >> GO TO 5.
5.DETECT MALFUNCTIONING PART
Check the following.
• Harness connectors F8, E8
• Harness for open or short between ECM and refrigerant pressure sensor
>> Repair open circuit or short to ground or short to power in harness or connectors.
6.CHECK REFRIGERANT PRESSURE SENSOR INPU T SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Check the continuity between ECM harness connecto r and refrigerant pressure sensor harness connec-
tor.
2. Also check harness for short to ground and short to power.
Refrigerant pressure sensor Ground Voltage
Connector Terminal
E17 3Ground Approx. 5 V
SEF479Y
Refrigerant pressure sensor ECM
Continuity
Connector Terminal Connector Terminal
E17 1F11 48 Existed
Refrigerant pressure sensor ECM
Continuity
Connector Terminal Connector Terminal
E17 2F11 41 Existed
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REFRIGERANT PRESSURE SENSOREC-453
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Is the inspection result normal?
YES >> GO TO 8.
NO >> GO TO 7.
7.DETECT MALFUNCTIONING PART
Check the following.
• Harness connectors F8, E8
• Harness for open or short between ECM and refrigerant pressure sensor
>> Repair open circuit or short to ground or short to power in harness or connectors.
8.CHECK INTERMITTENT INCIDENT
Refer to EC-114, "
Diagnosis Procedure".
Is the inspection result normal?
YES >> Replace refrigerant pressure sensor.
NO >> Repair or replace.
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EC-454
< ECU DIAGNOSIS >[HR16DE]
ECM
ECU DIAGNOSIS
ECM
Reference ValueINFOID:0000000005398635
VALUES ON THE DIAGNOSIS TOOL
Remarks:
• Specification data are reference values.
• Specification data are output/input values which are
detected or supplied by the ECM at the connector.
*Specification data may not be directly relat ed to their components signals/values/operations.
I.e. Adjust ignition timing with a timing light before m onitoring IGN TIMING, because the monitor may show the
specification data in spite of the ignition timing not bei ng adjusted to the specification data. this IGN TIMING
monitors the data calculated by the ECM according to the signals input from the camshaft position sensor and
other ignition timing related sensors.
Monitor Item Condition Values/Status
ENG SPEED • Run engine an d compare CONSULT-III value with the tachometer indication.Almost the same speed as
the tachometer indication.
MAS A/F SE-B1 See EC-107, "
Diagnosis Procedure".
B/FUEL SCHDL See EC-107, "
Diagnosis Procedure".
A/F ALPHA-B1 See EC-107, "
Diagnosis Procedure".
COOLAN TEMP/S • Engine: After warming up More than 70°C (158F)
A/F SEN1 (B1) • Engine: After warming up Maintaining engine speed at 2,000 rpm Fluctuates around 2.2 V
HO2S2 (B1) • Revving engine from idle up to 3,000 rpm quickly after the following conditions
are met.
- Engine: After warming up
- After keeping engine speed between 3,500 and 4,000 rpm for 1 minute and at idle for 1 minute under no load 0 - 0.3 V
←→ Approx. 0.6 -
1.0 V
HO2S2 MNTR (B1) LEAN ←→ RICH
VHCL SPEED SE • Turn drive wheels and compare CONSULT-III value with the speedometer in-
dication. Almost the same speed as
speedometer indication
BATTERY VOLT • Ignition switch: ON (Engine stopped) 11 - 14 V
ACCEL SEN 1 • Ignition switch: ON
(Engine stopped) Accelerator pedal: Fully released 0.6 - 0.9 V
Accelerator pedal: Fully depressed 4.0 - 4.8 V
ACCEL SEN 2 • Ignition switch: ON
(Engine stopped) Accelerator pedal: Fully released 0.6 - 0.9 V
Accelerator pedal: Fully depressed 3.9 - 4.8 V
TP SEN 1-B1 • Ignition switch: ON
(Engine stopped)
• Selector lever position: D (A/T) or 1st (M/T) Accelerator pedal: Fully released More than 0.36 V
Accelerator pedal: Fully depressed Less than 4.75 V
TP SEN 2-B1 • Ignition switch: ON
(Engine stopped)
• Selector lever position: D (A/T) or 1st (M/T) Accelerator pedal: Fully released More than 0.36 V
Accelerator pedal: Fully depressed Less than 4.75 V
START SIGNAL • Ignition switch: ON → START → ON OFF → ON → OFF
CLSD THL POS • Ignition switch: ON
(Engine stopped) Accelerator pedal:
Fully released ON
Accelerator pedal: Slightly depressed OFF
AIR COND SIG • Engine: After warming up, idle the
engine Air conditioner switch: OFF
OFF
Air conditioner switch: ON
(Compressor operates.) ON
P/N POSI SW • Ignition switch: ON Selector lever position: P or N (A/T) or
Neutral (M/T)
ON
Selector lever position: Except above OFF
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ECM
EC-455
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PW/ST SIGNAL
• Engine: After warming up, idle the
engine Steering wheel: Not being turned OFF
Steering wheel: Being turned
ON
LOAD SIGNAL • Ignition switch: ON Rear window defogger switch: ON
and/or Lighting switch: 2nd position
ON
Rear window defogger switch and lighting
switch: OFF OFF
IGNITION SW • Ignition switch: ON → OFF → ON ON → OFF → ON
HEATER FAN SW • Engine: After warming up, idle the
engine Heater fan switch: ON
ON
Heater fan switch: OFF OFF
BRAKE SW • Ignition switch: ON Brake pedal: Fully released
OFF
Brake pedal: Slightly depressed ON
INJ PULSE-B1 • Engine: After warming up
• Selector lever position: P or N (A/
T) or Neutral (M/T)
• Air conditioner switch: OFF
•No load Idle
2.0 - 3.0 msec
2,000 rpm 1.9 - 2.9 msec
IGN TIMING • Engine: After warming up
• Selector lever position: P or N (A/
T) or Neutral (M/T)
• Air conditioner switch: OFF
•No load Idle
10 - 20°BTDC
2,000 rpm 25 - 45°BTDC
CAL/LD VALUE • Engine: After warming up
• Selector lever position: P or N (A/
T) or Neutral (M/T)
• Air conditioner switch: OFF
•No load Idle
10 - 35%
2,500 rpm 10 - 35%
MASS AIRFLOW • Engine: After warming up
• Selector lever position: P or N (A/
T) or Neutral (M/T)
• Air conditioner switch: OFF
•No load Idle
1.0 - 4.0 g·m/s
2,500 rpm 2.0 - 10.0 g·m/s
PURG VOL C/V • Engine: After warming up
• Selector lever position: P or N (A/
T) or Neutral (M/T)
• Air conditioner switch: OFF
•No load Idle
0%
2,000 rpm 0 - 50%
INT/V TIM (B1) • Engine: After warming up
• Selector lever position: P or N (A/
T) or Neutral (M/T)
• Air conditioner switch: OFF
•No load Idle
−5 - 5 °CA
2,000 rpm Approx. 0 - 40°CA
INT/V SOL (B1) • Engine: After warming up
• Selector lever position: P or N (A/
T) or Neutral (M/T)
• Air conditioner switch: OFF
•No load Idle
0 - 2%
2,000 rpm Approx. 0 - 90%
AIR COND RLY • Engine: After warming up, idle the
engine Air conditioner switch: OFF
OFF
Air conditioner switch: ON
(Compressor operates) ON
FUEL PUMP RLY • For 1 second after turning ignition switch: ON
• Engine running or cranking
ON
• E

xcept above OFF
THRTL RELAY • Ignition switch: ON ON
Monitor Item
Condition Values/Status
Revision: January 20102010 Versa