sensor NISSAN LATIO 2008 Service Repair Manual

EC-544
< SERVICE INFORMATION >
REFRIGERANT PRESSURE SENSOR
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-II 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 INPUT 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 5V
SEF479Y
Continuity should exist.
Continuity should exist.

REFRIGERANT PRESSURE SENSOR
EC-545
< SERVICE INFORMATION >
C
D
E
F
G
H
I
J
K
L
MA
EC
N
P O
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-136
.
OK or NG
OK >> Replace refrigerant pressure sensor.
NG >> Repair or replace.
Removal and InstallationINFOID:0000000001703079
REFRIGERANT PRESSURE SENSOR
Refer to MTC-81, "Removal and Installation of Refrigerant Pressure Sensor".

EC-548
< SERVICE INFORMATION >
SERVICE DATA AND SPECIFICATIONS (SDS)
SERVICE DATA AND SPECIFICATIONS (SDS)
Fuel PressureINFOID:0000000001703081
Idle Speed and Ignition TimingINFOID:0000000001703082
*: 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:0000000001703083
Mass Air Flow SensorINFOID:0000000001703084
*: Engine is warmed up to normal operating temperature and running under no load.
Intake Air Temperature SensorINFOID:0000000001703085
Engine Coolant Temperature SensorINFOID:0000000001703086
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: ONA/T In P or N position
850 rpm or more CVT In P or N position
M/T In Neutral position
Ignition timingA/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-II or GST)
At idle10 - 35
At 2,500 rpm10 - 35
Supply voltageBattery voltage (11 - 14V)
Output voltage at idle1.0 - 1.3*V
Mass air flow (Using CONSULT-II 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 kΩ
25 (77)1.800 - 2.200
Temperature °C (°F) Resistance kΩ
20 (68)2.1 - 2.9
50 (122)0.68 - 1.00
90 (194)0.236 - 0.260

SERVICE DATA AND SPECIFICATIONS (SDS)
EC-549
< SERVICE INFORMATION >
C
D
E
F
G
H
I
J
K
L
MA
EC
N
P O
Air Fuel Ratio (A/F) Sensor 1 HeaterINFOID:0000000001703087
Heated Oxygen sensor 2 HeaterINFOID:0000000001703088
Crankshaft Position Sensor (POS)INFOID:0000000001703089
Refer to EC-301, "Component Inspection".
Camshaft Position Sensor (PHASE)INFOID:0000000001703090
Refer to EC-307, "Component Inspection".
Throttle Control MotorINFOID:0000000001703091
Fuel InjectorINFOID:0000000001703092
Fuel PumpINFOID:0000000001703093
Resistance [at 25°C (77°F)] 1.8 - 2.44Ω
Resistance [at 25°C (77°F)] 3.4 - 4.4Ω
Resistance [at 25°C (77°F)] Approximately 1 - 15Ω
Resistance [at 10 - 60°C (50 - 140°F)] 11.4 - 14.5Ω
Resistance [at 25°C (77°F)] Approximately 0.2 - 5.0Ω

EI-44
< ON-VEHICLE REPAIR >
FLOOR TRIM
6. Disconnect floor harness connector.
7. Remove diagnosis sensor unit. Refer to SRS-44
.
8. Remove key interlock cable. Refer to AT-213
.
9. Remove floor carpet hook.
10. Cut floor trim using a blade knife first between openings (1),
then at front edge (2) as shown.
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, prepare 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
PIIB6047E

EM-8
< SERVICE INFORMATION >
PREPARATION
ST16610001
(J-23907)
Pilot bushing pullerRemoving crankshaft pilot bushing
KV11103000
(—)
Pulley pullerRemoving crankshaft pulley
KV991J0050
(J-44626)
Air fuel sensor SocketLoosening or tightening air fuel ratio A/F
sensor
a: 22 mm (0.87 in)
KV10114400
(J-38365)
Heated oxygen sensor wrenchLoosening or tightening rear heated oxy-
gen sensor
a: 22 mm (0.87 in)
KV11105210
(J-44716)
Stopper plateSecuring driveplate and flywheel
KV10115600
(J-38958)
Valve oil seal driftInstalling valve oil seal
Use side A.
a: 20 (0.79) dia.
b: 13 (0.51) dia.
c: 10.3 (0.406) dia.
d: 8 (0.31) dia.
e: 10.7 (0.421)
f: 5 (0.20)
KV10115801
(—)
Oil filter wrenchRemoving and installing oil filter
a: 64.3 mm (2.531 in) Tool number
(Kent-Moore No.)
Tool nameDescription
NT045
NT676
LBIA0444E
NT636
ZZA0009D
S-NT603
S-NT375

EM-10
< SERVICE INFORMATION >
PREPARATION
KV10111800
Valve guide driftRemoving and installing valve guide
Valve guide reamer (1): Reaming valve guide inner hole
(2): Reaming hole for oversize valve guide
(J-43897-18)
(J-43897-12)
Oxygen sensor thread cleanerReconditioning the exhaust system threads
before installing a new oxygen sensor (Use
with anti-seize lubricant shown below.)
a: J-43897-18 (18 mm dia.) for zirconia ox-
ygen sensor
b: J-43897-12 (12 mm dia.) for titania oxy-
gen sensor
Anti-seize lubricant (Permatex 133AR
or equivalent meeting MIL specifica-
tion MIL-A-907)Lubricating oxygen sensor thread cleaning
tool when reconditioning exhaust system
threads
E20 Torx® Socket
(J-45816)Removing and installing drive plate and fly-
wheel bolts (Kent-Moore No.)
Tool nameDescription
PBIC4012E
PBIC4013E
AEM488
AEM489
LBIA0285E

EM-16
< SERVICE INFORMATION >
AIR CLEANER AND AIR DUCT
AIR CLEANER AND AIR DUCT
ComponentINFOID:0000000001702480
Removal and InstallationINFOID:0000000001702481
REMOVAL
1. Remove the air duct (inlet).
2. Remove the air cleaner filter from the air cleaner case. Refer to EM-17, "
Changing Air Cleaner Filter".
3. Remove the air duct [between air duct (inlet) and air cleaner case] from the air cleaner case.
4. Remove the PCV hose.
5. Remove the air duct (between air cleaner case and electronic throttle control actuator).
• Add marks as necessary for easier installation.
6. Remove air cleaner case with the following procedure.
a. Remove battery. Refer to SC-4
.
b. Disconnect harness connector from mass air flow sensor.
c. Remove the air cleaner case.
7. Remove the mass air flow sensor from the air cleaner case, if necessary.
CAUTION:
• Handle it carefully and avoid impacts.
• Do not touch sensor part.
INSTALLATION
Installation is in the reverse order of removal.
1. Air cleaner filter 2. Holder 3. Air cleaner cover
4. Seal 5. Mass air flow sensor 6. Air duct
7. PCV hose 8. Air duct (Inlet) 9. Air duct (Front)
10. Clip 11. Resonator 12. Grommet
13. Air cleaner case A. To electronic throttle control actuator B. To rocker cover
WBIA0770E

EXHAUST MANIFOLD
EM-21
< SERVICE INFORMATION >
C
D
E
F
G
H
I
J
K
L
MA
EM
N
P O
EXHAUST MANIFOLD
ComponentINFOID:0000000001702485
Removal and InstallationINFOID:0000000001702486
REMOVAL
1. Remove exhaust front tube. Refer to EX-4, "Removal and Installation".
2. Remove exhaust manifold cover.
3. Remove the A/F sensor 1, using Tool (A).
CAUTION:
Handle it carefully and avoid impacts.
4. Remove exhaust manifold side bolt of exhaust manifold stay.
1. Exhaust manifold cover 2. Exhaust manifold 3. Gasket
4. Stud bolt 5. Bracket 6. A/F ratio sensor 1
7. Exhaust manifold stay Engine front
WBIA0778E
Tool number :KV991J0050 (J-44626)
WBIA0772E

EXHAUST MANIFOLD
EM-23
< SERVICE INFORMATION >
C
D
E
F
G
H
I
J
K
L
MA
EM
N
P O
3. Install exhaust manifold stay (2) in the direction as shown.
4. Install the A/F ratio sensor 1, using Tool
CAUTION:
• Handle it carefully and avoid impacts.
• Before installing a new A/F ratio sensor, clean the exhaust
tube threads using suitable tool and approved anti-seize
lubricant.
• Do not over-tighten the A/F ratio sensor. Doing so may
damage the A/F ratio sensor, resulting in the MIL coming
on.
5. Installation of the remaining parts is in the reverse order of removal.
1 : Exhaust manifold
A : Upper mark
: Engine front
PBIC3944E
Tool number : KV991J0050 (J-44626)
Tool number : — (J-43897-12)
Tool number : — (J-43897-18)
WBIA0772E