O2 sensor NISSAN LATIO 2010 Service Repair Manual

EC-1018
< SERVICE INFORMATION >[MR18DE]
FUEL PUMP
• Harness for open or short between IPDM E/R
and “fuel level sensor unit and fuel pump”
>> Repair open circuit or short to ground or short to power in harness or connectors.
9.CHECK FUEL PUMP GROUND CIRCUIT
1. Check harness continuity between “fuel level sensor unit and fuel pump” terminal 3 and ground. Refer to Wiring Diagram.
2. Also check harness for short to power.
OK or NG
OK >> GO TO 10.
NG >> Repair or replace harness or connectors.
10.CHECK FUEL PUMP
Refer to EC-1018, "
Component Inspection".
OK or NG
OK >> GO TO 11.
NG >> Replace fuel pump.
11 .CHECK INTERMITTENT INCIDENT
Refer to EC-632
.
OK or NG
OK >> Replace IPDM E/R. Refer to PG-28, "Removal and Installation of IPDM E/R".
NG >> Repair or replace harness or connectors.
Component InspectionINFOID:0000000005532914
FUEL PUMP
1. Disconnect “fuel level sensor uni t and fuel pump” harness connector.
2. Check resistance between “fuel level sensor unit and fuel pump” terminals 1 and 3.
3. If NG, replace “fuel level sensor unit and fuel pump”.
Removal and InstallationINFOID:0000000005532915
FUEL PUMP
Refer to FL-6, "Removal and Installation".
Continuity should exist.
Resistance: Approximately 0.2 - 5.0
Ω [at 25° C (77°F)]
SEC918C
Revision: January 20102010 Versa

EC-1028
< SERVICE INFORMATION >[MR18DE]
REFRIGERANT PRESSURE SENSOR
REFRIGERANT PRESSURE SENSOR
Component DescriptionINFOID:0000000005532921
The refrigerant pressure sensor (1) 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.
• : Vehicle front
BBIA0713E
PBIB2657E
Revision: January 20102010 Versa

REFRIGERANT PRESSURE SENSOREC-1029
< SERVICE INFORMATION > [MR18DE]
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Wiring DiagramINFOID:0000000005532922
Specification data are reference values and are measured between each terminal and ground.
CAUTION:
Do not use ECM ground terminals wh
en measuring input/output voltage. Doing so may result in dam-
age to the ECM's transistor. Use a ground ot her than ECM terminals, such as the ground.
BBWA2662E
Revision: January 20102010 Versa

EC-1030
< SERVICE INFORMATION >[MR18DE]
REFRIGERANT PRESSURE SENSOR
Diagnosis Procedure
INFOID:0000000005532923
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 voltage between ECM terminal 41 and ground with CON- SULT-III or tester.
OK or NG
OK >> INSPECTION END
NG >> GO TO 2.
2.CHECK GROUND CONNECTIONS
1. Turn A/C switch and blower fan switch OFF.
2. Stop engine and turn ignition switch OFF.
3. Loosen and retighten ground screw on the body. Refer to EC-638, "
Ground Inspection".
OK or NG
OK >> GO TO 3.
NG >> Repair or replace ground connections.
3.CHECK REFRIGERANT PRESSURE SENSOR POWER SUPPLY CIRCUIT
TERMI- NAL NO. WIRE
COLOR ITEM
CONDITIONDATA (DC Voltage)
41 GR Refrigerant pressure sensor [Engine is running]
•
Warm-up condition
• Both A/C switch and blower fan switch: ON
(Compressor operates) 1.0 - 4.0 V
48 BR Sensor ground
(Refrigerant pressure sensor) [Engine is running]
•
Warm-up condition
• Idle speed Approximately 0 V
74 W Sensor power supply
(Refrigerant pressure sensor) [Ignition switch: ON]
Approximately 5 V
Voltage: 1.0 - 4.0 V
PBIA9574J
:Vehicle front
1. Body ground E24 2. Engine ground F9 3. Engine ground F16
4. Body ground E15
BBIA0698E
Revision: January 20102010 Versa

REFRIGERANT PRESSURE SENSOREC-1031
< SERVICE INFORMATION > [MR18DE]
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1. Disconnect refrigerant pressure sensor (1) harness connector.
- : Vehicle front
2. Turn ignition switch ON.
3. Check voltage between refrigerant pressure sensor terminal 3
and ground with CONSULT-III or tester.
OK or NG
OK >> GO TO 5.
NG >> GO TO 4.
4.DETECT MALFUNCTIONING PART
Check the following.
• Harness connectors E8, F8
• Harness for open or short between refrigerant pressure sensor and ECM
>> Repair open circuit or short to ground or short to power in harness or connectors.
5.CHECK REFRIGERANT PRESSURE SENSOR GROUND CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Check harness continuity between refrigerant pressure sensor terminal 1 and ECM terminal 48.
Refer to Wiring Diagram.
4. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 7.
NG >> GO TO 6.
6.DETECT MALFUNCTIONING PART
Check the following.
• Harness connectors E8, F8
• Harness for open or short between refrigerant pressure sensor and ECM
>> Repair open circuit or short to ground or short to power in harness or connectors.
7.CHECK REFRIGERANT PRESSURE SENSOR IN PUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Check harness continuity between refrigerant pressure sensor terminal 2 and ECM terminal 41.
Refer to Wiring Diagram.
2. Also check harness for short to ground and short to power.
OK or NG
BBIA0713E
Voltage: Approximately 5 V
SEF479Y
Continuity should exist.
Continuity should exist.
Revision: January 20102010 Versa

EC-1032
< SERVICE INFORMATION >[MR18DE]
REFRIGERANT PRESSURE SENSOR
OK >> GO TO 9.
NG >> GO TO 8.
8.DETECT MALFUNCTIONING PART
Check the following.
• Harness connectors E8, F8
• Harness for open or short between refrigerant pressure sensor and ECM
>> Repair open circuit or short to ground or short to power in harness or connectors.
9.CHECK INTERMITTENT INCIDENT
Refer to EC-632
.
OK or NG
OK >> Replace refrigerant pressure sensor.
NG >> Repair or replace.
Removal and InstallationINFOID:0000000005532924
REFRIGERANT PRESSURE SENSOR
Refer to MTC-89, "Removal and Installation of Refrigerant Pressure Sensor".
Revision: January 20102010 Versa

SERVICE DATA AND SPECIFICATIONS (SDS)EC-1035
< SERVICE INFORMATION > [MR18DE]
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SERVICE DATA AND SPECIFICATIONS (SDS)
Fuel PressureINFOID:0000000005532926
Idle Speed and Ignition TimingINFOID:0000000005532927
*: Under the following conditions:
• Air conditioner switch: OFF
• Electric load: OFF (Lights, heater fan & rear window defogger)
• Steering wheel: Kept in straight-ahead position
Calculated Load ValueINFOID:0000000005532928
Mass Air Flow SensorINFOID:0000000005532929
*: Engine is warmed up to normal operating temperature and running under no load.
Intake Air Temperature SensorINFOID:0000000005532930
Engine Coolant Temperature SensorINFOID:0000000005532931
Fuel pressure at idle
Approximately 350 kPa (3.57 kg/cm2, 51 psi)
Target idle speedA/T No load* (in P or N position)
700 ± 50 rpm
CVT No load* (In P or N position)
M/T No load* (in Neutral position)
Air conditioner: ON A/T In P or N position
850 rpm or more
CVT In P or N position
M/T In Neutral position
Ignition timing A/T In P or N position
13 ± 5 ° BTDC
CVT In P or N position
M/T In Neutral position
Calculated load value (Using CONSULT-III or GST)
At idle 10 - 35 %
At 2,500 rpm 10 - 35 %
Supply voltageBattery voltage (11 - 14 V )
Output voltage at idle 1.0 - 1.3* V
Mass air flow (Using CONSULT-III or GST) 1.0 - 4.0 g·m/sec at idle*
2.0 - 10.0 g·m/sec at 2,500 rpm*
Temperature [ °C ( °F)] Resistance (k Ω)
25 (77) 1.800 - 2.200
Temperature [°C ( °F)] Resistance (k Ω)
20 (68) 2.1 - 2.9
50 (122) 0.68 - 1.00
90 (194) 0.236 - 0.260
Revision: January 20102010 Versa

EC-1036
< SERVICE INFORMATION >[MR18DE]
SERVICE DATA AND SPECIFICATIONS (SDS)
Air Fuel Ratio (A/F) Sensor 1 Heater
INFOID:0000000005532932
Heated Oxygen sensor 2 HeaterINFOID:0000000005532933
Crankshaft Position Sensor (POS)INFOID:0000000005532934
Refer to EC-798, "Component Inspection".
Camshaft Position Sensor (PHASE)INFOID:0000000005532935
Refer to EC-803, "Component Inspection".
Throttle Control MotorINFOID:0000000005532936
Fuel InjectorINFOID:0000000005532937
Fuel PumpINFOID:0000000005532938
Resistance [at 25 °C (77 °F)] 1.8 - 2.44 Ω
Resistance [at 25°C (77 °F)] 3.4 - 4.4 Ω
Resistance [at 25°C (77 °F)] Approximately 1 - 15 Ω
Resistance [at 10 - 60°C (50 - 140 °F)] 11.4 - 14.5 Ω
Resistance [at 25 °C (77 °F)] Approximately 0.2 - 5.0 Ω
Revision: January 20102010 Versa

PRECAUTIONSEI-3
< PRECAUTION >
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PRECAUTION
PRECAUTIONS
Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT
PRE-TENSIONER"
INFOID:0000000005714352
The Supplemental Restraint System such as “AIR BAG” and “SEAT BELT PRE-TENSIONER”, used along
with a front seat belt, helps to reduce the risk or severi ty of injury to the driver and front passenger for certain
types of collision. This system includes seat belt switch inputs and dual stage front air bag modules. The SRS
system uses the seat belt switches to determine the front air bag deployment, and may only deploy one front
air bag, depending on the severity of a collision and w hether the front occupants are belted or unbelted.
Information necessary to service the system safely is included in the SRS and SB section of this Service Man-
ual.
WARNING:
• To avoid rendering the SRS inoper ative, which could increase the risk of personal injury or death in
the event of a collision which would result in air bag inflation, all maintenance must be performed by
an authorized NISSAN/INFINITI dealer.
• Improper maintenance, including in correct removal and installation of the SRS, can lead to personal
injury caused by unintentional act ivation of the system. For removal of Spiral Cable and Air Bag
Module, see the SRS section.
• Do not use electrical test equipm ent on any circuit related to the SRS unless instructed to in this
Service Manual. SRS wiring harnesses can be identi fied by yellow and/or orange harnesses or har-
ness connectors.
PRECAUTIONS WHEN USING POWER TOOLS (AIR OR ELECTRIC) AND HAMMERS
WARNING:
• When working near the Airbag Diagnosis Sensor Un it or other Airbag System sensors with the Igni-
tion ON or engine running, DO NOT use air or el ectric power tools or strike near the sensor(s) with a
hammer. Heavy vibration could activate the sensor( s) and deploy the air bag(s), possibly causing
serious injury.
• When using air or electric power tools or hammers, always switch the Ignition OFF, disconnect the battery, and wait at least 3 minutes before performing any service.
Precaution Necessary for Steering Wheel Rotation After Battery Disconnect
INFOID:0000000005396814
NOTE:
• This Procedure is applied only to models with Intelligent Key system and NATS (NISSAN ANTI-THEFT SYS-
TEM).
• Remove and install all control units after disconnecti ng both battery cables with the ignition knob in the
″ LOCK ″ position.
• Always use CONSULT-III to perform self-diagnosis as a part of each function inspection after finishing work.
If DTC is detected, perform trouble diagnosis according to self-diagnostic results.
For models equipped with the Intelligent Key system and NATS , an electrically controlled steering lock mech-
anism is adopted on the key cylinder.
For this reason, if the battery is disconnected or if the battery is discharged, the steering wheel will lock and
steering wheel rotation will become impossible.
If steering wheel rotation is required when battery power is interrupted, follow the procedure below before
starting the repair operation.
OPERATION PROCEDURE
1. Connect both battery cables. NOTE:
Supply power using jumper cables if battery is discharged.
2. Use the Intelligent Key or mechanical key to turn the ignition switch to the ″ACC ″ position. At this time, the
steering lock will be released.
3. Disconnect both battery cables. The steering lock will remain released and the steering wheel can be
rotated.
4. Perform the necessary repair operation.
Revision: January 20102010 Versa

FLOOR TRIMEI-47
< ON-VEHICLE REPAIR >
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6. Disconnect floor harness connector.
7. Remove diagnosis sensor unit. Refer to SRS-45
.
8. Remove key interlock cable. Refer to AT-219
.
9. Remove floor carpet hook.
10. Cut floor trim using a blade knife first between openings (1), then at front edge (2) as shown.
• : Vehicle front
11. Release floor trim metal clips after cutting, then pull out floor trim through door opening.
12. Remove floor spacer RH/LH.
INSTALLATION
Installation is in the reverse order of removal.
CAUTION:
When replacing the floor trim with a new one, prep are for installation by cutting it like the old one.
Make sure there is a quality fit between floor trim and instrument lower cover by tucking the cut edge
completely.
PIIB6046E
PIIB2580J
AWJIA0419ZZ
Revision: January 20102010 Versa