2001 NISSAN ALMERA N16 Electronic Repair Manual

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Page 489 of 2493

NISSAN ALMERA N16 2001 Electronic Repair Manual 5 CHECK HEATED OXYGEN SENSOR 1 (FRONT)
Refer to ªComponent Inspectionº, EC-193.
OK or NG
OK©GO TO 6.
NG©Replace heated oxygen sensor 1 (front).
6 CHECK INTERMITTENT INCIDENT
Perform ªTROUBLE DIAG

Page 490 of 2493

NISSAN ALMERA N16 2001 Electronic Repair Manual SEF648Y
SEF011X
Without CONSULT-II
1) Start engine and warm it up to normal operating temperature.
2) Set voltmeter probes between ECM terminal 62 (HO2S1 sig-
nal) and engine ground.
3) Check the foll

Page 491 of 2493

NISSAN ALMERA N16 2001 Electronic Repair Manual SEF463R
SEF288D
Component DescriptionNJEC0119The heated oxygen sensor 1 (front) is placed into the exhaust
manifold. It detects the amount of oxygen in the exhaust gas com-
pared to the outside air. T

Page 492 of 2493

NISSAN ALMERA N16 2001 Electronic Repair Manual SEF010V
On Board Diagnosis LogicNJEC0122To judge the malfunction of heated oxygen sensor 1 (front), this
diagnosis measures response time of heated oxygen sensor 1
(front) signal. The time is compensa

SEF010V
On Board Diagnosis LogicNJEC0122To judge the malfunction of heated oxygen sensor 1 (front), this
diagnosis measures response time of heated oxygen sensor 1
(front) signal. The time is compensated by engine operating (speed
and load), fuel feedback control constant, and heated oxygen sen-
sor 1 (front) temperature index. Judgment is based on whether the
compensated time [heated oxygen sensor 1 (front) cycling time
index] is inordinately long or not.
DTC No. Malfunction is detected when ... Check Items (Possible Cause)
P0133
0133+The response of the voltage signal from the sensor
takes more than the specified time.+Harness or connectors
(The sensor circuit is open or shorted.)
+Heated oxygen sensor 1 (front)
+Heated oxygen sensor 1 heater (front)
+Fuel pressure
+Injectors
+Intake air leaks
+Exhaust gas leaks
+PCV
+Mass air flow sensor
SEF831Y
SEF832Y
SEF658Y
DTC Confirmation ProcedureNJEC0123CAUTION:
Always drive vehicle at a safe speed.
NOTE:
If ªDTC Confirmation Procedureº has been previously conducted,
always turn ignition switch ªOFFº and wait at least 9 seconds
before conducting the next test.
TESTING CONDITION:
+Always perform at a temperature above þ10ÉC (14ÉF).
+Before performing the following procedure, confirm that
battery voltage is more than 11V at idle.
With CONSULT-II
1) Start engine and warm it up to normal operating temperature.
2) Stop engine and wait at least 9 seconds.
3) Turn ignition switch ªONº and select ªHO2S1 (B1) P0133º of
ªHO2S1º in ªDTC WORK SUPPORTº mode with CONSULT-II.
4) Touch ªSTARTº.
5) Start engine and let it idle for at least 3 minutes.
NOTE:
Never raise engine speed above 3,200 rpm after this step. If
the engine speed limit is exceeded, return to step 5.
6) When the following conditions are met, ªTESTINGº will be dis-
played on the CONSULT-II screen. Maintain the conditions
continuously until ªTESTINGº changes to ªCOMPLETEDº. (It
will take approximately 50 seconds.)
ENG SPEED 2,100 - 3,100 rpm
Vehicle speed 80 - 120 km/h (50 - 75 MPH)
B/FUEL SCHDL 3.8 - 7.6 msec
Selector lever Suitable position
If ªTESTINGº is not displayed after 5 minutes, retry from
step 2.
DTC P0133 HEATED OXYGEN SENSOR 1 (FRONT)
(RESPONSE MONITORING)
QG
On Board Diagnosis Logic
EC-196

Page 493 of 2493

NISSAN ALMERA N16 2001 Electronic Repair Manual 7) Make sure that ªOKº is displayed after touching ªSELF-DIAG
RESULTSº. If ªNGº is displayed, refer to ªDiagnostic
Procedureº, EC-199.
SEF011X
Overall Function CheckNJEC0124Use this procedure

Page 494 of 2493

NISSAN ALMERA N16 2001 Electronic Repair Manual Wiring DiagramNJEC0125
YEC967
DTC P0133 HEATED OXYGEN SENSOR 1 (FRONT)
(RESPONSE MONITORING)
QG
Wiring Diagram
EC-198

Page 495 of 2493

NISSAN ALMERA N16 2001 Electronic Repair Manual Diagnostic ProcedureNJEC0126
1 RETIGHTEN GROUND SCREWS
1. Turn ignition switch ªOFFº.
2. Loosen and retighten engine ground screws.
JEF104Y
©GO TO 2.
2 RETIGHTEN HEATED OXYGEN SENSOR 1 (FRONT)
Loos

Page 496 of 2493

NISSAN ALMERA N16 2001 Electronic Repair Manual 5 CLEAR THE SELF-LEARNING DATA
With CONSULT-II
1. Start engine and warm it up to normal operating temperature.
2. Select ªSELF-LEARN CONTROLº in ªWORK SUPPORTº mode with CONSULT-II.
3. Clear the s

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