2008 NISSAN TEANA Service Manual

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Page 1681 of 5121

NISSAN TEANA 2008 Service Manual EC-220
< COMPONENT DIAGNOSIS >[VQ25DE, VQ35DE]
P0335 CKP SENSOR (POS)
6.CHECK APP SENSOR
Refer to EC-306, "
Component Inspection".
Is the inspection result normal?
YES >> GO TO 12.
NO >> GO TO 7.
7.RE

Page 1682 of 5121

NISSAN TEANA 2008 Service Manual P0335 CKP SENSOR (POS)
EC-221
< COMPONENT DIAGNOSIS >[VQ25DE, VQ35DE]
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>> INSPECTION END
Component InspectionINFOID:0000000003856626
1.CHECK CRANKSHAFT POSITION SENSOR (

Page 1683 of 5121

NISSAN TEANA 2008 Service Manual EC-222
< COMPONENT DIAGNOSIS >[VQ25DE, VQ35DE]
P0340, P0345 CMP SENSOR (PHASE)
P0340, P0345 CMP SENSOR (PHASE)
DescriptionINFOID:0000000003856627
The camshaft position sensor (PHASE) senses the retrac

EC-222
< COMPONENT DIAGNOSIS >[VQ25DE, VQ35DE]
P0340, P0345 CMP SENSOR (PHASE)
P0340, P0345 CMP SENSOR (PHASE)
DescriptionINFOID:0000000003856627
The camshaft position sensor (PHASE) senses the retraction of
camshaft (INT) to identify a particular cylinder. The camshaft position
sensor (PHASE) senses the piston position.
When the crankshaft position sensor (POS) system becomes inoper-
ative, the camshaft position sensor (PHASE) provides various con-
trols of engine parts instead, utilizing timing of cylinder identification
signals.
The sensor consists of a permanent magnet and Hall IC.
When engine is running, the high and low parts of the teeth cause
the gap with the sensor to change.
The changing gap causes the magnetic field near the sensor to
change.
Due to the changing magnetic field, the voltage from the sensor changes.
ECM receives the signals as shown in the figure.
DTC LogicINFOID:0000000003856628
DTC DETECTION LOGIC
NOTE:
If DTC P0340 or P0345 is displayed with DTC P0643, first perform the trouble diagnosis for DTC P0643.
Refer to EC-243, "
DTC Logic".
DTC CONFIRMATION PROCEDURE
1.PRECONDITIONING
If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at
least 10 seconds before conducting the next test.
TESTING CONDITION:
Before performing the following procedure, confirm that battery voltage is more than 10.5 V with igni-
tion switch ON.
JMBIA0064ZZ
JMBIA0001GB
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P0340Camshaft position sen-
sor (PHASE) (bank 1)
circuit
The cylinder No. signal is not sent to ECM for
the first few seconds during engine cranking.
The cylinder No. signal is not sent to ECM
during engine running.
The cylinder No. signal is not in the normal
pattern during engine running. Harness or connectors
(The sensor circuit is open or shorted)
Camshaft position sensor (PHASE)
Camshaft (INT)
Starter motor [VQ25DE engine (Refer to
STR-5
)]
Starter motor [VQ35DE engine (Refer to
STR-6
)]
Starting system circuit [VQ25DE engine (Re-
fer to STR-5
.)]
Starting system circuit [VQ35DE engine (Re-
fer to STR-6
.)]
Dead (Weak) battery P0345Camshaft position sen-
sor (PHASE) (bank 2)
circuit

Page 1684 of 5121

NISSAN TEANA 2008 Service Manual P0340, P0345 CMP SENSOR (PHASE)
EC-223
< COMPONENT DIAGNOSIS >[VQ25DE, VQ35DE]
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>> GO TO 2.
2.PERFORM DTC CONFIRMATION PROCEDURE-I
1. Start engine and let it idle for at

Page 1685 of 5121

NISSAN TEANA 2008 Service Manual EC-224
< COMPONENT DIAGNOSIS >[VQ25DE, VQ35DE]
P0340, P0345 CMP SENSOR (PHASE)
Is the inspection result normal?
YES >> GO TO 5.
NO >> Repair open circuit, short to ground or short to power in harness

Page 1686 of 5121

NISSAN TEANA 2008 Service Manual P0340, P0345 CMP SENSOR (PHASE)
EC-225
< COMPONENT DIAGNOSIS >[VQ25DE, VQ35DE]
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5. Visually check the sensor for chipping.
Is the inspection result normal?
YES >> GO TO

Page 1687 of 5121

NISSAN TEANA 2008 Service Manual EC-226
< COMPONENT DIAGNOSIS >[VQ25DE, VQ35DE]
P0420, P0430 THREE WAY CATALYST FUNCTION
P0420, P0430 THREE WAY CATALYST FUNCTION
DTC LogicINFOID:0000000003856631
DTC DETECTION LOGIC
The ECM monitors t

EC-226
< COMPONENT DIAGNOSIS >[VQ25DE, VQ35DE]
P0420, P0430 THREE WAY CATALYST FUNCTION
P0420, P0430 THREE WAY CATALYST FUNCTION
DTC LogicINFOID:0000000003856631
DTC DETECTION LOGIC
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 A/F sensor 1 and heated oxygen sensor
2 approaches a specified limit value, the three way catalyst (mani-
fold) malfunction is diagnosed.
DTC CONFIRMATION PROCEDURE
1.INSPECTION START
Will CONSULT-III be used?
Will CONSULT-III be used?
YES >> GO TO 2.
NO >> GO TO 7.
2.PRECONDITIONING
If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at
least 10 seconds before conducting the next test.
TESTING CONDITION:
Do not hold engine speed for more than the specified minutes below.
>> GO TO 3.
3.PERFORM DTC CONFIRMATION PROCEDURE-I
With CONSULT-III
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. Check 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 between 2,000 and 3,000 rpm and hold it for 3 consecutive minutes then release the acceler-
ator pedal completely.
10. Check the indication of “CATALYST”.
Which is displayed on CONSULT-III screen?
PBIB2055E
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P0420Catalyst system efficien-
cy below threshold
(bank 1) Three way catalyst (manifold) does not oper-
ate 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 P0430Catalyst system efficien-
cy below threshold
(bank 2)

Page 1688 of 5121

NISSAN TEANA 2008 Service Manual P0420, P0430 THREE WAY CATALYST FUNCTION
EC-227
< COMPONENT DIAGNOSIS >[VQ25DE, VQ35DE]
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CMPLT >> GO TO 6.
INCMP >> GO TO 4.
4.PERFORM DTC CONFIRMATION PROCEDURE-II
1. W

P0420, P0430 THREE WAY CATALYST FUNCTION
EC-227
< COMPONENT DIAGNOSIS >[VQ25DE, VQ35DE]
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CMPLT >> GO TO 6.
INCMP >> GO TO 4.
4.PERFORM DTC CONFIRMATION PROCEDURE-II
1. Wait 5 seconds at idle.
2. Rev engine between 2,000 and 3,000 rpm and maintain it until “INCMP” of “CATALYST” changes to
“CMPLT” (It will take approximately 5 minutes).
Does the indication change to
“CMPLT”?
YES >> GO TO 6.
NO >> GO TO 5.
5.PERFORM DTC CONFIRMATION PROCEDURE AGAIN
1. Stop engine and cool it down to less than 70°C (158°F).
2. Perform DTC CONFIRMATION PROCEDURE again.
>> GO TO 3.
6.PERFORM DTC CONFIRMATION PROCEDURE-III
Check 1st trip DTC.
Is 1st trip DTC detected?
YES >> Go to EC-228, "Diagnosis Procedure".
NO >> INSPECTION END
7.PERFORM COMPONENT FUNCTION CHECK
Perform component function check. Refer to EC-227, "
Component Function Check".
NOTE:
Use component function check to check the overall function of the three way catalyst (manifold). During this
check, a 1st trip DTC might not be confirmed.
Is the inspection result normal?
YES >> INSPECTION END
NO >> Go to EC-228, "
Diagnosis Procedure".
Component Function CheckINFOID:0000000003856632
1.PERFORM COMPONENT FUNCTION CHECK
Without CONSULT-III
1. Start engine and warm it up to the normal operating temperature.
2. Turn ignition switch OFF and wait at least 10 seconds.
3. Start engine and keep the engine speed between 3,500 and 4,000 rpm for at least 1 minute under no load.
4. Let engine idle for 1 minute.
5. Open engine hood.
6. Check the voltage between ECM harness connector terminals under the following conditions.
Is the inspection result normal?
YES >> INSPECTION END
NO >> Go to EC-228, "
Diagnosis Procedure".
DTCECM
Condition Voltage (V)
Connec-
tor+–
Terminal Terminal
P0420
F833
[HO2S2 (bank 1)
signal]35
(Sensor
ground)Keeping engine speed at 2,500 rpm
constant under no loadThe voltage fluctuation cycle takes
more than 5 seconds.
1 cycle: 0.6 - 1.0 → 0 - 0.3 → 0.6 -
1.0
P043034
[HO2S2 (bank 2)
signal]

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