2008 NISSAN LATIO Service Repair Manual

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Page 1361 of 2771

NISSAN LATIO 2008 Service Repair Manual DTC P0300 - P0304 MULTIPLE CYLINDER MISFIRE, NO. 1 - 4 CYLINDER MIS-
FIRE
EC-287
< SERVICE INFORMATION >
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8. Crank engine for 5 seconds or more to remove combustion gas

DTC P0300 - P0304 MULTIPLE CYLINDER MISFIRE, NO. 1 - 4 CYLINDER MIS-
FIRE
EC-287
< SERVICE INFORMATION >
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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
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 coil
within 50cm. Be careful not to get an electrical shock
while checking, because the electrical discharge voltage
becomes 20kV or more.
• It might cause to damage the ignition coil if the gap of more than 17 mm is taken.
NOTE:
When the gap is less than 13 mm, the spark might be generated even if the coil is malfunctioning.
OK or NG
OK >> GO TO 9.
NG >> GO TO 6.
6.CHECK FUNCTION OF IGNITION COIL-II
1. Turn ignition switch OFF.
2. Disconnect spark plug and connect a known-good spark plug.
3. Crank engine for about 3 seconds, and recheck whether spark is generated between the spark plug and
the grounded metal portion.
OK or NG
OK >> GO TO 7.
NG >> Check ignition coil, power transistor and their circuits. Refer to EC-531
.
7.CHECK SPARK PLUG
Check the initial spark plug for fouling, etc.
OK or NG
OK >> Replace spark plug(s) with standard type one(s). For
spark plug type, refer to MA-17, "
Changing Spark
Plugs".
NG >> 1. Repair or clean spark plug.
2. GO TO 8.
8.CHECK FUNCTION OF IGNITION COIL-III
1. Reconnect the initial spark plugs.
2. Crank engine for about three seconds, and recheck whether spark is generated between the spark plug
and the grounded portion.
OK or NG
OK >>INSPECTION END
NG >> Replace spark plug(s) with standard type one(s). For spark plug type, refer to MA-17, "
Changing
Spark Plugs".
9.CHECK COMPRESSION PRESSURESpark should be generated.
PBIB2325E
Spark should be generated.
SEF156I
Spark should be generated.

Page 1362 of 2771

NISSAN LATIO 2008 Service Repair Manual EC-288
< SERVICE INFORMATION >
DTC P0300 - P0304 MULTIPLE CYLINDER MISFIRE, NO. 1 - 4 CYLINDER MIS-
FIRE
Check compression pressure. Refer to EM-62, "On-Vehicle Service".
OK or NG
OK >> GO TO

Page 1363 of 2771

NISSAN LATIO 2008 Service Repair Manual DTC P0300 - P0304 MULTIPLE CYLINDER MISFIRE, NO. 1 - 4 CYLINDER MIS-
FIRE
EC-289
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6. Also check harness for short to power.
OK or NG
OK >> GO TO

Page 1364 of 2771

NISSAN LATIO 2008 Service Repair Manual EC-290
< SERVICE INFORMATION >
DTC P0300 - P0304 MULTIPLE CYLINDER MISFIRE, NO. 1 - 4 CYLINDER MIS-
FIRE
>>INSPECTION END

Page 1365 of 2771

NISSAN LATIO 2008 Service Repair Manual DTC P0327, P0328 KS
EC-291
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DTC P0327, P0328 KS
Component DescriptionINFOID:0000000001702793
The knock sensor (1) is attached to the cylinder blo

Page 1366 of 2771

NISSAN LATIO 2008 Service Repair Manual EC-292
< SERVICE INFORMATION >
DTC P0327, P0328 KS
Wiring Diagram
INFOID:0000000001702796
Specification data are reference values and are measured between each terminal and ground.
CAUTION:
Do not use

Page 1367 of 2771

NISSAN LATIO 2008 Service Repair Manual DTC P0327, P0328 KS
EC-293
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Diagnosis ProcedureINFOID:0000000001702797
1.CHECK KNOCK SENSOR INPUT SIGNAL CIRCUIT-I
1. Turn ignition switch OFF.
2

Page 1368 of 2771

NISSAN LATIO 2008 Service Repair Manual EC-294
< SERVICE INFORMATION >
DTC P0327, P0328 KS
OK or NG
OK >> GO TO 5.
NG >> Repair or replace ground connections.
5.CHECK KNOCK SENSOR SHIELD CIRCUIT FOR OPEN AND SHORT
1. Reconnect knock sensor

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