1999 NISSAN PRIMERA Electronic Repair Manual

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Page 977 of 2267

NISSAN PRIMERA 1999 Electronic Repair Manual Wiring DiagramNCEC0141
YEC085A
DTC P0135 HEATED OXYGEN SENSOR 1 (FRONT) HEATERSR20DE
Wiring Diagram
EC-177

Page 978 of 2267

NISSAN PRIMERA 1999 Electronic Repair Manual Diagnostic ProcedureNCEC0142
1 CHECK POWER SUPPLY
1. Turn ignition switch ªOFFº.
2. Disconnect heated oxygen sensor 1 (front) harness connector.
SEF207X3. Turn ignition switch ªONº.
4. Check volta

Page 979 of 2267

NISSAN PRIMERA 1999 Electronic Repair Manual Component InspectionNCEC0143HEATED OXYGEN SENSOR 1 (FRONT) HEATERNCEC0143S01Check resistance between terminals 3 and 1.
Resistance: 2.3 - 4.3Wat 25ÉC (77ÉF)
Check continuity between terminals 2 and

Page 980 of 2267

NISSAN PRIMERA 1999 Electronic Repair Manual Component DescriptionNCEC0144The heated oxygen sensor 2 (rear) (Rear HO2S), after three way
catalyst, monitors the oxygen level in the exhaust gas.
Even if switching characteristics of the heated oxyg

Component DescriptionNCEC0144The heated oxygen sensor 2 (rear) (Rear HO2S), after three way
catalyst, monitors the oxygen level in the exhaust gas.
Even if switching characteristics of the heated oxygen sensor 1
(front) are shifted, the air fuel ratio is controlled to stoichiometric,
by the signal from the heated oxygen sensor 2 (rear).
This sensor is made of ceramic zirconia. The zirconia generates
voltage from approximately 1V in richer conditions to 0V in leaner
conditions.
Under normal conditions the heated oxygen sensor 2 (rear) is not
used for engine control operation.
CONSULT-II Reference Value in Data Monitor
Mode
NCEC0145Specification data are reference values.
MONITOR ITEM CONDITION SPECIFICATION
HO2S2 (B)
IEngine: After warming upRevving engine from idle to 3,000
rpm0 - 0.3V+,Approx. 0.6 - 1.0V
HO2S2 MNTR
(B1)LEAN+,RICH
ECM Terminals and Reference ValueNCEC0146Specification data are reference values and are measured between each terminal and 48 (ECM ground).
TERMI-
NAL
NO.WIRE
COLORITEM CONDITION DATA (DC Voltage)
63 LHeated oxygen sensor 2
(rear)[Engine is running]
IAfter warming up to normal operating temperature
and engine speed is 3,000 rpm0 - Approximately 1.0V
On Board Diagnosis LogicNCEC0147The heated oxygen sensor 2 (rear) has a much longer switching
time between rich and lean than the heated oxygen sensor 1
(front). The oxygen storage capacity before the three way catalyst
causes the longer switching time. To judge the malfunctions of
heated oxygen sensor 2 (rear), ECM monitors whether the mini-
mum voltage of the sensor is sufficiently low during various driving
conditions such as fuel-cut.
DTC No. Malfunction is detected when ... Check Items (Possible Cause)
P0137
0137IThe minimum voltage from the sensor does not reach
the specified voltage.IHarness or connectors
(The sensor circuit is open or shorted.)
IHeated oxygen sensor 2 (rear)
IFuel pressure
IInjectors
SEF327R
SEF258V OK NG
1V
0.43V
0V
DTC P0137 HEATED OXYGEN SENSOR 2
(REAR) (MIN. VOLTAGE MONITORING)SR20DE
Component Description
EC-180

Page 981 of 2267

NISSAN PRIMERA 1999 Electronic Repair Manual DTC Confirmation ProcedureNCEC0148CAUTION:
Always drive vehicle at a safe speed.
NOTE:
If ªDTC Confirmation Procedureº has been previously conducted,
always turn ignition switch ªOFFº and wait at

DTC Confirmation ProcedureNCEC0148CAUTION:
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:
IAlways perform at a temperature above þ10ÉC (14ÉF).
INever stop engine during this procedure. If the engine is
stopped, retry this procedure from step 2.
With CONSULT-II
NOTE:
The figure on the left will be displayed on the CONSULT-II
screen when you start the DTC Work Support. Ignore the first
figure and start the test.
ªCOMPLETEDº will be displayed on the screen as the second
figure when the test is completed properly.
1) Start engine and warm it up to normal operating temperature.
2) Turn ignition switch ªOFFº and wait at least 9 seconds.
3) Turn ignition switch ªONº and select ªHO2S2 (B1) P0137º of
ªHO2S2º in ªDTC WORK SUPPORTº mode with CONSULT-II.
4) Touch ªSTARTº.
5) Start engine and let it idle for at least 30 seconds.
6) Rev engine up to 2,000 rpm 2 or 3 times quickly under no load.
If ªCOMPLETEDº appears on CONSULT-II screen, go to step
10.
If ªCOMPLETEDº does not appear on CONSULT-II screen, go
to the following step.
7) Drive vehicle at a speed of more than 70 km/h (43 MPH) for 2
consecutive minutes.
8) Additionally, ªCOMPLETEDº will be displayed on the CON-
SULT-II screen when the accelerator pedal is completely
released after the vehicle is driven for 60 seconds or more
under the following conditions.
(It will take approximately 5 seconds.)
ENG SPEED 1,650 - 3,600 rpm (CVT)
1,500 - 3,600 rpm (M/T)
Vehicle speed 68 - 130 km/h (42 - 81 MPH)
B/FUEL SCHDL 3.2 - 15.0 msec (CVT)
3.2 - 13.5 msec (M/T)
Selector lever D position (CVT)
4th gear position (M/T)
NOTE:
IIf ªCOMPLETEDº appears on CONSULT-II screen, go to
step 10.
IIf ªCOMPLETEDº does not appear on CONSULT-II screen,
go to the following step.
9) Stop the vehicle and let it idle until ªCOMPLETEDº is displayed
on the CONSULT-II screen. (It will take 6 minutes at the most.)
NOTE:
If ªCOMPLETEDº is not displayed after 6 minutes, retry from
step 2.
10) Make sure that ªOKº is displayed after touching ªSELF-DIAG
SEF682X
SEF684X
DTC P0137 HEATED OXYGEN SENSOR 2
(REAR) (MIN. VOLTAGE MONITORING)SR20DE
DTC Confirmation Procedure
EC-181

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NISSAN PRIMERA 1999 Electronic Repair Manual RESULTSº. If ªNGº is displayed, refer to ªDiagnostic
Procedureº, EC-SR-184.
Overall Function CheckNCEC0149Use this procedure to check the overall function of the heated oxy-
gen sensor 2 (rear) c

Page 983 of 2267

NISSAN PRIMERA 1999 Electronic Repair Manual Wiring DiagramNCEC0150
YEC086A
DTC P0137 HEATED OXYGEN SENSOR 2
(REAR) (MIN. VOLTAGE MONITORING)SR20DE
Wiring Diagram
EC-183

Page 984 of 2267

NISSAN PRIMERA 1999 Electronic Repair Manual Diagnostic ProcedureNCEC0151
1 RETIGHTEN GROUND SCREWS
1. Turn ignition switch ªOFFº.
2. Loosen and retighten engine ground screws.
SEF202X
©GO TO 2.
2 CLEAR THE SELF-LEARNING DATA
With CONSULT-II

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