NISSAN LATIO 2009 Service Repair Manual

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CAN COMMUNICATION
System Description INFOID:0000000004499913
CAN (Controller Area Network) is a serial communication li ne for real time application. It is an on-vehicle mul-
tiplex communication line with high data communication speed and excellent error detection ability. Many elec-
tronic control units are equipped onto a vehicle, and each control unit shares information and links with other
control units during operation (not independent). In CAN communication, control units are connected with 2
communication lines (CAN H line, CAN L line) allowing a high rate of information transmission with less wiring.
Each control unit transmits/receives data but selectively reads required data only.
Refer to LAN-26, " CAN Communication Signal Chart " , about CAN communication for detail.

EC-1036< SERVICE INFOMATION >
[MR TYPE 2]
EVAPORATIVE EMISSION SYSTEM
EVAPORATIVE EMISSION SYSTEM
Description INFOID:0000000004499914
SYSTEM DESCRIPTION
The evaporative emission system is used to reduce hydr ocarbons emitted into the atmosphere from the fuel
system. This reduction of hydrocarbons is accomplis hed by activated charcoals in the EVAP canister.
The fuel vapor in the sealed fuel tank is led into t he EVAP canister which contains activated carbon and the
vapor is stored there when the engine is not oper ating or when refueling to the fuel tank.
The vapor in the EVAP canister is purged by the air through the purge line to the intake manifold when the
engine is operating. EVAP canister purge volume contro l solenoid valve is controlled by ECM. When the
engine operates, the flow rate of vapor controlled by EVAP canister purge volume control solenoid valve is
proportionally regulated as the air flow increases.
EVAP canister purge volume control solenoid valve al so shuts off the vapor purge line during decelerating.
EVAPORATIVE EMISSION LINE DRAWING PBIB3639E

EVAPORATIVE EMISSION SYSTEM
EC-1037
< SERVICE INFOMATION >
[MR TYPE 2] C
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NOTE: Do not use soapy water or any type of so
lvent while installing vacuum hose or purge hoses.
:
Vehicle front
:From next figure
1. Intake manifold collector 2. EVAP canister purge volume con- trol solenoid valve3. EVAP service port
4. EVAP purge resonator PBIB3330E

EC-1038< SERVICE INFOMATION >
[MR TYPE 2]
EVAPORATIVE EMISSION SYSTEM
Component Inspection INFOID:0000000004499915
EVAP CANISTER (A): To previous figure
1. EVAP control system pressure sensor 2. EVAP canister 3. EVAP canister vent control valve
NOTE: Do not use soapy water or any type of so lvent while installing vacuum hose or purge hoses. BBIA0692E

EVAPORATIVE EMISSION SYSTEM
EC-1039
< SERVICE INFOMATION >
[MR TYPE 2] C
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Check EVAP canister as follows:
1. Block port B.
2. Blow air into port Aand check that it flows freely out of port C.
3. Release blocked port B.
4. Apply vacuum pressure to port Band check that vacuum pres-
sure exists at the ports A and C.
5. Block port A and B.
6. Apply pressure to port Cand check that there is no leakage.
FUEL TANK VACUUM RELIEF VALVE (BUILT INTO FUEL FILLER CAP) 1. Wipe clean valve housing.
2. Check valve opening pressure and vacuum.
3. If out of specificat ion, replace fuel filler cap as an assembly.
CAUTION:
Use only a genuine fuel filler cap as a replacement. If an incor-
rect fuel filler cap is used, the MIL may come on.
EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE
Refer to EC-1329, " Component Inspection " .
FUEL TANK TEMPERATURE SENSOR Refer to EC-1273, " Component Inspection " .
EVAP CANISTER VENT CONTROL VALVE Refer to EC-1340, " Component Inspection " .
EVAP CONTROL SYSTEM PRESSURE SENSOR Refer to EC-1350, " Component Inspection " .
EVAP SERVICE PORT PBIB1212E
SEF445Y
Pressure: 15.3 - 20.0 kPa
(0.156 - 0.204 kg/cm 2
, 2.22 - 2.90 psi)
Vacuum: −6.0 to −3.4 kPa
( − 0.061 to −0.035 kg/cm 2
, −0.87 to −0.48 psi) SEF943S

EC-1040< SERVICE INFOMATION >
[MR TYPE 2]
EVAPORATIVE EMISSION SYSTEM
Positive pressure is delivered to the EVAP system through the EVAP
service port. If fuel vapor leak age in the EVAP system occurs, use a
leak detector to locate the leak.
Removal and Installation INFOID:0000000004499916
EVAP CANISTER
Tighten EVAP canister as shown in the figure.
EVAP CANISTER VENT CONTROL VALVE
1. Turn EVAP canister vent control valve counterclockwise.
• Lock (A)
• Unlock (B)
2. Remove the EVAP canister vent control valve.
Always replace O-ring with a new one.
How to Detect Fuel Vapor Leakage INFOID:0000000004499917
CAUTION:
• Never use compressed air or a high pressure pump.
• Do not exceed 4.12 kPa (0.042 kg/cm 2
, 0.6 psi) of pressure in EVAP system.
NOTE:
• Do not start engine.
• Improper installation of EVAP service port adapter to the EVAP service port may cause a leak.
WITH CONSULT-III
1. Attach the EVAP service port adapter securely to the EVAP service port.
2. Also attach the pressure pump and hose to the EVAP service port adapter. SEF462UC
PBIB1214E
PBIB3091E

EVAPORATIVE EMISSION SYSTEM
EC-1041
< SERVICE INFOMATION >
[MR TYPE 2] C
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3. Turn ignition switch ON.
4. Select the “EVAP SYSTEM CLOSE” of “WORK SUPPORT” mode with CONSULT-III.
5. Touch “START”. A bar graph (Pressure indicating display) will appear on the screen.
6. Apply positive pressure to the EVAP system until t he pressure indicator reaches the middle of the bar
graph.
7. Remove EVAP service port adapter and hose with pressure pump.
8. Locate the leak using a leak detector. Refer to EC-1036," Description " .
WITHOUT CONSULT-III
1. Attach the EVAP service port adapter securely to the EVAP ser- vice port.
2. Also attach the pressure pump with pressure gauge to the EVAP service port adapter.
3. Apply battery voltage to the termi nal of EVAP canister vent con-
trol valve (3) to make a closed EVAP system.
• EVAP control system pressure sensor (1)
• EVAP canister (2)
4. To locate the leak, deliver positive pressure to the EVAP system until pressure gauge points reach 1.38 to
2.76 kPa (0.014 to 0.028 kg/cm 2
, 0.2 to 0.4 psi).
5. Remove EVAP service port adapter and hose with pressure pump.
6. Locate the leak using a leak detector. Refer to EC-1036, " Description " . SEF200U
SEF462UC
BBIA0693E

EC-1042< SERVICE INFOMATION >
[MR TYPE 2]
ON BOARD REFUELING VAPOR RECOVERY (ORVR)
ON BOARD REFUELING VAPOR RECOVERY (ORVR)
System Description INFOID:0000000004499918
From the beginning of refueling, the air and vapor insi de the fuel tank go through refueling EVAP vapor cut
valve and EVAP/ORVR line to the EVAP canister. The vapor is absorbed by the EVAP canister and the air is
released to the atmosphere.
When the refueling has reached the full level of the fuel tank, the refueling EVAP vapor cut valve is closed and
refueling is stopped because of auto shut-off. The vapor which was absorbed by the EVAP canister is purged
during driving.
WARNING:
When conducting inspections below, be sure to observe the following:
• Put a “CAUTION: FLAMMABLE” sign in workshop.
• Do not smoke while servicing fuel system. Keep open flames and sparks away from work area.
• Be sure to furnish the workshop with a CO 2
fire extinguisher.
CAUTION:
• Before removing fuel line parts, carry out the following procedures:
- Put drained fuel in an explosion-pr oof container and put lid on securely.
- Release fuel pressure from fuel line. Refer to EC-1086, " Fuel Pressure Check " .
- Disconnect negative battery cable.
• Always replace O-ring when the fu el gauge retainer is removed.
• Do not kink or twist hose and tube when they are installed.
• Do not tighten hose and clamps excessively to avoid damaging hoses.
• After installation, run engine an d check for fuel leaks at connection.
• Do not attempt to top off the fuel tank afte r the fuel pump nozzle shuts off automatically.
Continued refueling may cause fuel overflow, r esulting in fuel spray and possibly a fire.
Diagnosis Procedure INFOID:0000000004499919
SYMPTOM: FUEL ODOR FROM EVAP CANISTER IS STRONG. 1.
CHECK EVAP CANISTER
1. Remove EVAP canister with EVAP canister vent control valve and EVAP control system pressure sensor
attached.
2. Weigh the EVAP canister with EVAP canister vent control valve and EVAP control system pressure sensor
attached.
The weight should be l ess than 1.9 kg (4.2 lb).
OK or NG OK >> GO TO 2.
NG >> GO TO 3. 2.
CHECK IF EVAP CANISTER SATURATED WITH WATER PBIB1387E

ON BOARD REFUELING VAPOR RECOVERY (ORVR)
EC-1043
< SERVICE INFOMATION >
[MR TYPE 2] C
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Does water drain from
the EVAP canister?
Yes or No Yes >> GO TO 3.
No >> GO TO 6. 3.
REPLACE EVAP CANISTER
Replace EVAP canister with a new one.
>> GO TO 4. 4.
CHECK DRAIN FILTER
Refer to EC-1045, " Component Inspection " .
OK or NG OK >> GO TO 5.
NG >> Replace drain filter. 5.
DETECT MALFUNCTIONING PART
Check the EVAP hose between EVAP canister and vehicle frame for clogging or poor connection.
>> Repair or replace EVAP hose. 6.
CHECK REFUELING EVAP VAPOR CUT VALVE
Refer to EC-1045, " Component Inspection " .
OK or NG OK >>
INSPECTION END
NG >> Replace refueling EVAP vapor cut valve with fuel tank.
SYMPTOM: CANNOT REFUEL/FUEL ODOR FROM THE FUEL FILLER OPENING IS STRONG
WHILE REFUELING. 1.
CHECK EVAP CANISTER
1. Remove EVAP canister with EVAP canister vent c ontrol valve and EVAP control system pressure sensor
attached.
2. Weigh the EVAP canister with EVAP canister vent control valve and EVAP control system pressure sensor
attached.
The weight should be l ess than 1.9 kg (4.2 lb).
OK or NG OK >> GO TO 2.
NG >> GO TO 3. 2.
CHECK IF EVAP CANISTER SATURATED WITH WATER PBIB1213E

EC-1044< SERVICE INFOMATION >
[MR TYPE 2]
ON BOARD REFUELING VAPOR RECOVERY (ORVR)
Does water drain from the EVAP canister?
Yes or No Yes >> GO TO 3.
No >> GO TO 5. 3.
REPLACE EVAP CANISTER
Replace EVAP canister with a new one.
>> GO TO 4. 4.
CHECK DRAIN FILTER
Refer to EC-1045, " Component Inspection " .
OK or NG OK >> GO TO 5.
NG >> Replace drain filter. 5.
DETECT MALFUNCTIONING PART
Check the EVAP hose between EVAP canister and vehicle frame for clogging or poor connection.
>> Repair or replace EVAP hose. 6.
CHECK VENT HOSES AND VENT TUBES
Check hoses and tubes between EVAP canister and refuel ing EVAP vapor cut valve for clogging, kink, loose-
ness and improper connection.
OK or NG OK >> GO TO 7.
NG >> Repair or replace hoses and tubes. 7.
CHECK FILLER NECK TUBE
Check recirculation line for clogging, dents and cracks.
OK or NG OK >> GO TO 8.
NG >> Replace filler neck tube. 8.
CHECK REFUELING EVAP VAPOR CUT VALVE
Refer to EC-1045, " Component Inspection " .
OK or NG OK >> GO TO 9.
NG >> Replace refueling EVAP vapor cut valve with fuel tank. 9.
CHECK FUEL FILLER TUBE
Check filler neck tube and hose connected to the fuel tank for clogging, dents and cracks.
OK or NG OK >> GO TO 10.
NG >> Replace fuel filler tube. 10.
CHECK ONE-WAY FUEL VALVE-I
Check one-way valve for clogging.
OK or NG OK >> GO TO 11. PBIB1213E