2003 NISSAN ALMERA N16 Electronic Repair Manual

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Page 569 of 3189

NISSAN ALMERA N16 2003 Electronic Repair Manual DTC P0335 CKP SENSOR (POS)
EC-239
[QG (WITH EURO-OBD)]
C
D
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MA
EC
5. Check resistance as shown in the figure.
6. If NG, replace crankshaft position sensor (POS).
Removal and Installatio

Page 570 of 3189

NISSAN ALMERA N16 2003 Electronic Repair Manual EC-240
[QG (WITH EURO-OBD)]
DTC P0340 CMP SENSOR (PHASE)
DTC P0340 CMP SENSOR (PHASE)
PFP:23731
Component DescriptionEBS00K8C
The camshaft position sensor (PHASE) senses the retraction with
in

EC-240
[QG (WITH EURO-OBD)]
DTC P0340 CMP SENSOR (PHASE)
DTC P0340 CMP SENSOR (PHASE)
PFP:23731
Component DescriptionEBS00K8C
The camshaft position sensor (PHASE) senses the retraction with
intake valve camshaft 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.
On Board Diagnosis LogicEBS00K8D
DTC Confirmation ProcedureEBS00K8E
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.
TESTING CONDITION:
Before performing the following procedure, confirm that battery voltage is more than 10.5V with igni-
tion switch “ON”.
WITH CONSULT-II
1. Turn ignition switch “ON”.
2. Select “DATA MONITOR” mode with CONSULT-II.
3. Crank engine for at least 2 seconds and run it for at least 5 sec-
onds at idle speed.
4. If 1st trip DTC is detected, go to EC-242, "
Diagnostic Procedure"
.
If 1st trip DTC is not detected, go to next step.
5. Maintain engine speed at more than 800 rpm for at least 5 sec-
onds.
6. If 1st trip DTC is detected, go to EC-242, "
Diagnostic Procedure"
.
WITH GST
Follow the procedure “WITH CONSULT-II” above.
PBIB0562E
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P0340
0340Camshaft position sensor
(PHASE) circuit
●The cylinder No. signal is not sent to ECM
for the first few seconds during engine
cranking.
●The cylinder No. signal is not set 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 (Intake)
●Starter motor (Refer to SC-13.)
●Starting system circuit (Refer to SC-13.)
●Dead (Weak) battery
SEF013Y

Page 571 of 3189

NISSAN ALMERA N16 2003 Electronic Repair Manual DTC P0340 CMP SENSOR (PHASE)
EC-241
[QG (WITH EURO-OBD)]
C
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MA
EC
Wiring DiagramEBS00K8F
YEC292A

Page 572 of 3189

NISSAN ALMERA N16 2003 Electronic Repair Manual EC-242
[QG (WITH EURO-OBD)]
DTC P0340 CMP SENSOR (PHASE)
Specification data are reference values and are measured between each terminal and ground.
CAUTION:
Do not use ECM ground terminals when measur

Page 573 of 3189

NISSAN ALMERA N16 2003 Electronic Repair Manual DTC P0340 CMP SENSOR (PHASE)
EC-243
[QG (WITH EURO-OBD)]
C
D
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EC
3.CHECK CMP SENSOR (PHASE) POWER SUPPLY CIRCUIT
1. Disconnect camshaft position (CMP) sensor (PHASE) harness
co

Page 574 of 3189

NISSAN ALMERA N16 2003 Electronic Repair Manual EC-244
[QG (WITH EURO-OBD)]
DTC P0340 CMP SENSOR (PHASE)
7. CHECK CAMSHAFT POSITION SENSOR (PHASE)
Refer to EC-244, "
Component Inspection" .
OK or NG
OK >> GO TO 8.
NG >> Replace camshaft pos

Page 575 of 3189

NISSAN ALMERA N16 2003 Electronic Repair Manual DTC P0340 CMP SENSOR (PHASE)
EC-245
[QG (WITH EURO-OBD)]
C
D
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EC
Removal and InstallationEBS00K8I
CAMSHAFT POSITION SENSOR (PHASE)
Refer to EM-29, "ROCKER COVER" .

Page 576 of 3189

NISSAN ALMERA N16 2003 Electronic Repair Manual EC-246
[QG (WITH EURO-OBD)]
DTC P0420 THREE WAY CATALYST FUNCTION
DTC P0420 THREE WAY CATALYST FUNCTION
PFP:20905
On Board Diagnosis LogicEBS00K8J
The ECM monitors the switching frequency ratio of hea

EC-246
[QG (WITH EURO-OBD)]
DTC P0420 THREE WAY CATALYST FUNCTION
DTC P0420 THREE WAY CATALYST FUNCTION
PFP:20905
On Board Diagnosis LogicEBS00K8J
The ECM monitors the switching frequency ratio of heated oxygen
sensors 1 and 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 heated oxygen sensors 1 and 2
approaches a specified limit value, the three way catalyst (Manifold)
malfunction is diagnosed.
DTC Confirmation ProcedureEBS00K8K
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-II
TESTING CONDITION:
●Open engine hood before conducting the following procedure.
●Do not hold engine speed for more than the specified minutes below.
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 one minute under no
load.
4. Let engine idle for one minute.
5. Select “DTC & SRT CONFIRMATION” then “SRT WORK SUP-
PORT” mode with CONSULT-II.
6. Rev engine up to 2,500 to 3,500 rpm and hold it for 3 consecu-
tive minutes then release the accelerator pedal completely.
If “INCMP” of “CATALYST” changed to “COMPLT”, go to step 9
7. Wait 5 seconds at idle.
SEF484YF
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P0420
0420Catalyst 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 injectors
●Fuel injector leaks
●Spark plug
●Improper ignition timing
PBIB0566E

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