2011 NISSAN LATIO Service Repair Manual

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Page 2097 of 3787

NISSAN LATIO 2011 Service Repair Manual DTC P0340 CMP SENSOR (PHASE)EC-803
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1. Check harness continuity between CMP sens
or (PHASE) terminal 3 and ECM terminal 65.
Refer to Wi

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NISSAN LATIO 2011 Service Repair Manual EC-804
< SERVICE INFORMATION >[MR18DE]
DTC P0340 CMP SENSOR (PHASE)
5. Check resistance as shown in the figure.
6. If NG, replace camshaft position sensor (PHASE).
Removal and InstallationINFOID:00000

Page 2099 of 3787

NISSAN LATIO 2011 Service Repair Manual DTC P0420 THREE WAY CATALYST FUNCTIONEC-805
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DTC P0420 THREE WAY CATALYST FUNCTION
On Board Diagnosis LogicINFOID:0000000006341971
The E

DTC P0420 THREE WAY CATALYST FUNCTIONEC-805
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DTC P0420 THREE WAY CATALYST FUNCTION
On Board Diagnosis LogicINFOID:0000000006341971
The ECM monitors the switching frequency ratio of air fuel ratio (A/F)
sensor 1 and heated oxygen sensor 2.
A three way catalyst (manifold) with high oxygen storage capacity
will indicate a low switching frequency of heated oxygen sensor 2.
As oxygen storage capacity decreases, the heated oxygen sensor 2
switching frequency will increase.
When the frequency ratio of air fuel ratio (A/F) sensor 1 and heated
oxygen sensor 2 approaches a specified limit value, the three way
catalyst (manifold) malfunction is diagnosed.
DTC Confirmation ProcedureINFOID:0000000006341972
NOTE:
If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at
least 10 seconds before conducting the next test.
WITH CONSULT-III
TESTING CONDITION:
Do not hold engine speed for more
than the specified minutes below.
1. Turn ignition switch ON and select “DATA MONITOR” mode with CONSULT-III.
2. Start engine and warm it up to the normal operating temperature.
3. Turn ignition switch OFF and wait at least 10 seconds.
4. Start engine and keep the engine speed between 3,500 and 4,000 rpm for at least 1 minute under no load.
5. Let engine idle for 1 minute.
6. Make sure that “COOLAN TEMP/S” indicates more than 70 °C (158° F).
If not, warm up engine and go to next step when “COOLAN TEMP/S” indication reaches to 70°C (158° F).
7. Open engine hood.
8. Select “DTC & SRT CONFIRMATION” then “SRT WORK SUPPORT” mode with CONSULT-III.
9. Rev engine up to 2,000 to 3,000 rpm and hold it for 3 consecutive minutes then release the accelerator pedal completely.
If “INCMP” of “CATALYST” changed to “CMPLT”, go to step 12.
10. Wait 5 seconds at idle.
11. Rev engine up to 2,000 to 3,000 rpm and maintain it unt il “INCMP” of “CATALYST” changes to “CMPLT” (It
will take approximately 5 minutes).
If not “CMPLT”, stop engine and cool it down to less than 70 °C (158° F) and then retest from step 1.
12. Check 1st trip DTC. If 1st trip DTC is detected, go to EC-806, "
Diagnosis Procedure".
Overall Function CheckINFOID:0000000006341973
Use this procedure to check the overall function of the three way catalyst (manifold). During this check, a 1st
trip DTC might not be confirmed.
SEF484YB
DTC No. Trouble diagnosis name DTC detecting conditionPossible cause
P0420
0420 Catalyst system efficiency
below threshold • Three way catalyst (manifold) does not operate
properly.
• Three way catalyst (manifold) does not have enough oxygen storage capacity. • Three way catalyst (manifold)
• Exhaust tube
• Intake air leaks
• Fuel injector
• Fuel injector leaks
• Spark plug
• Improper ignition timing
Revision: May 2010
2011 Versa

Page 2100 of 3787

NISSAN LATIO 2011 Service Repair Manual EC-806
< SERVICE INFORMATION >[MR18DE]
DTC P0420 THREE WAY CATALYST FUNCTION
WITH GST
1. Start engine and warm it up to the normal operating temperature.
2. Turn ignition switch OFF and wait at least

Page 2101 of 3787

NISSAN LATIO 2011 Service Repair Manual DTC P0420 THREE WAY CATALYST FUNCTIONEC-807
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OK or NG
OK >> GO TO 5.
NG >> Follow the
EC-574, "
Basic Inspection".
5.CHECK FUEL INJECTO

DTC P0420 THREE WAY CATALYST FUNCTIONEC-807
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OK or NG
OK >> GO TO 5.
NG >> Follow the
EC-574, "
Basic Inspection".
5.CHECK FUEL INJECTOR
1. Stop engine and turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Turn ignition switch ON.
4. Check voltage between ECM terminals 25, 29, 30, 31 and ground with CONSULT-III or tester. Refer to Wiring Diagram for fuel injectors, EC-1010, "
Wiring Diagram".
OK or NG
OK >> GO TO 6.
NG >> Perform EC-1011, "
Diagnosis Procedure".
6.CHECK FUNCTION OF IGNITION COIL-I
CAUTION:
Do the following procedure in the place where ventilation is good without the combustible.
1. Turn ignition switch OFF.
2. Remove fuel pump (1) fuse in IPDM E/R (2) to release fuel pres- sure.
NOTE:
Do not use CONSULT-III to release fuel pressure, or fuel pres-
sure applies again during the following procedure.
- : Vehicle front
3. Start engine.
4. After engine stalls, crank it two or three times to release all fuel pressure.
5. Turn ignition switch OFF.
6. Remove all ignition coil harness connectors to avoid the electri- cal discharge from the ignition coils.
7. Remove ignition coil and spark plug of the cylinder to be checked.
8. Crank engine for 5 seconds or more to remove combustion gas in the cylinder.
9. Connect spark plug and harness connector to ignition coil.
10. Fix ignition coil using a rope etc. with gap of 13 - 17 mm (0.52 - 0.66 in) between the edge of the spark plug and grounded metal
portion as shown in the figure.
11. Crank engine for about 3 seconds, and check whether spark is
generated between the spark plug and the grounded metal por-
tion.
CAUTION:
• Do not approach to the spark plug and the ignition coilwithin 50 cm. Be careful not to get an electrical shock
while checking, because the el ectrical discharge voltage
becomes 20 kV or more.
Items Specifications
Target idle speed A/T: 700 ±
50 rpm (in P or N position)
CVT: 700 ± 50 rpm (in P or N position)
M/T: 700 ± 50 rpm (in Neutral position)
Ignition timing A/T: 13 ±
5° BTDC (in P or N position)
CVT: 13 ± 5 ° BTDC (in P or N position)
M/T: 13 ± 5 ° BTDC (in Neutral position)
Voltage: Battery voltage
Spark should be generated.
PBIB2958E
PBIB2325E
Revision: May 2010 2011 Versa

Page 2102 of 3787

NISSAN LATIO 2011 Service Repair Manual EC-808
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DTC P0420 THREE WAY CATALYST FUNCTION
• It might cause to damage the igni
tion coil if the gap of more than 17 mm (0.66 in) is taken.
NOTE:
When the gap is les

Page 2103 of 3787

NISSAN LATIO 2011 Service Repair Manual DTC P0420 THREE WAY CATALYST FUNCTIONEC-809
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Trouble is fixed.>>
INSPECTION END
Trouble is not fixed.>>Replace three way catalyst (manif

Page 2104 of 3787

NISSAN LATIO 2011 Service Repair Manual EC-810
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DTC P0441 EVAP CONTROL SYSTEM
DTC P0441 EVAP CONTROL SYSTEM
System DescriptionINFOID:0000000006341975
NOTE:
If DTC P0441 is displayed with other DTC such
as P21

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