2008 NISSAN TEANA Service Manual

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Page 1801 of 5121

NISSAN TEANA 2008 Service Manual EC-340
< COMPONENT DIAGNOSIS >[VQ25DE, VQ35DE]
FUEL PUMP
YES >> GO TO 13.
NO >> Repair open circuit or short to power in harness or connectors.
13.CHECK FUEL PUMP
Refer to EC-340, "
Component Inspecti

Page 1802 of 5121

NISSAN TEANA 2008 Service Manual IGNITION SIGNAL
EC-341
< COMPONENT DIAGNOSIS >[VQ25DE, VQ35DE]
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IGNITION SIGNAL
DescriptionINFOID:0000000003856848
The ignition signal from the ECM is sent to and amplif

Page 1803 of 5121

NISSAN TEANA 2008 Service Manual EC-342
< COMPONENT DIAGNOSIS >[VQ25DE, VQ35DE]
IGNITION SIGNAL
Is the inspection result normal?
YES >> GO TO 2.
NO >> Refer to EC-132, "
Diagnosis Procedure".
2.CHECK IGNITION COIL POWER SUPPLY CIRCUI

Page 1804 of 5121

NISSAN TEANA 2008 Service Manual IGNITION SIGNAL
EC-343
< COMPONENT DIAGNOSIS >[VQ25DE, VQ35DE]
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Is the inspection result normal?
YES >> GO TO 7.
NO >> Repair or replace harness or connectors.
7.CHECK I

Page 1805 of 5121

NISSAN TEANA 2008 Service Manual EC-344
< COMPONENT DIAGNOSIS >[VQ25DE, VQ35DE]
IGNITION SIGNAL
YES >> GO TO 10.
NO >> Replace malfunctioning ignition coil with power transistor.
10.CHECK INTERMITTENT INCIDENT
Refer to GI-35, "
Inter

EC-344
< COMPONENT DIAGNOSIS >[VQ25DE, VQ35DE]
IGNITION SIGNAL
YES >> GO TO 10.
NO >> Replace malfunctioning ignition coil with power transistor.
10.CHECK INTERMITTENT INCIDENT
Refer to GI-35, "
Intermittent Incident".
>> INSPECTION END
Component Inspection (Ignition Coil with Power Transistor)INFOID:0000000003856851
1.CHECK IGNITION COIL WITH POWER TRANSISTOR-I
1. Turn ignition switch OFF.
2. Disconnect ignition coil harness connector.
3. Check resistance between ignition coil terminals as per the following.
Is the inspection result normal?
YES >> GO TO 2.
NO >> Replace malfunctioning ignition coil with power transistor.
2.CHECK IGNITION COIL WITH POWER TRANSISTOR-II
CAUTION:
Perform the following procedure in a place with no combustible objects and good ventilation.
1. Turn ignition switch OFF.
2. Reconnect all harness connectors disconnected.
3. Remove fuel pump fuse in IPDM E/R to release fuel pressure.
NOTE:
Do not use CONSULT-III to release fuel pressure, or fuel pressure applies again during the following pro-
cedure.
4. Start engine.
5. After engine stalls, crank it 2 or 3 times to release all fuel pressure.
6. Turn ignition switch OFF.
7. Remove all ignition coil harness connectors to avoid the electrical discharge from the ignition coils.
8. Remove ignition coil and spark plug of the cylinder to be checked.
9. Crank engine for 5 seconds or more to remove combustion gas in the cylinder.
10. Connect spark plug and harness connector to ignition coil.
11. 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.
12. Crank engine for about 3 seconds, and check whether spark is
generated between the spark plug and the grounded metal por-
tion.
CAUTION:
Never place to the spark plug and the ignition coil within
50 cm (19.7 in) each other. Be careful not to get an electri-
cal shock while checking, because the electrical dis-
charge voltage becomes 20 kV or more.
It might damage the ignition coil if the gap of more than 17 mm (0.66 in) is made.
NOTE:
When the gap is less than 13 mm (0.52 in), a spark might be generated even if the coil is a malfunc-
tioning.
Is the inspection result normal?
Terminal No. (Polarity) Resistance Ω [at 25°C (77°F)]
1 and 2 Except 0 or ∞
1 and 3
Except 0
2 and 3
Spark should be generated.
JMBIA0066GB

Page 1806 of 5121

NISSAN TEANA 2008 Service Manual IGNITION SIGNAL
EC-345
< COMPONENT DIAGNOSIS >[VQ25DE, VQ35DE]
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YES >> INSPECTION END
NO >> Replace malfunctioning ignition coil with power transistor.
Component Inspect

Page 1807 of 5121

NISSAN TEANA 2008 Service Manual EC-346
< COMPONENT DIAGNOSIS >[VQ25DE, VQ35DE]
MALFUNCTION INDICATOR
MALFUNCTION INDICATOR
DescriptionINFOID:0000000003856853
The Malfunction Indicator MI is located on the combination meter.
The MI w

Page 1808 of 5121

NISSAN TEANA 2008 Service Manual POSITIVE CRANKCASE VENTILATION
EC-347
< COMPONENT DIAGNOSIS >[VQ25DE, VQ35DE]
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POSITIVE CRANKCASE VENTILATION
DescriptionINFOID:0000000003856860
This system returns blow

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