check engine NISSAN PRIMERA 1999 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 self-learning control coefficient by touching ªCLEARº.
SEF652Y4. Run engine for at least 10 minutes at idle speed.
Is the 1st trip DTC P0171 or P0172 detected? Is it difficult to start engine?
Without CONSULT-II
1. Start engine and warm it up to normal operating temperature.
2. Turn ignition switch ªOFFº.
3. Disconnect mass air flow sensor harness connector, and restart and run engine for at least 3 seconds at idle speed.
SEF203X4. Stop engine and reconnect mass air flow sensor harness connector.
5. Make sure diagnostic trouble code No. 0100 is displayed in Diagnostic Test Mode II.
6. Erase the diagnostic test mode II (Self-diagnostic results) memory. Refer to ªHOW TO ERASE EMISSION-RELATED DIAGNOSTIC
INFORMATIONº, EC-SR-56.
7. Make sure diagnostic trouble code No. 0000 is displayed in Diagnostic Test Mode II.
8. Run engine for at least 10 minutes at idle speed.
Is the 1st trip DTC 0171 or 0172 detected? Is it difficult to start engine?
YesorNo
Ye s©Perform trouble diagnosis for DTC P0171, P0172. Refer to EC-SR-212, 218.
No©GO TO 6.
6 CHECK INPUT SIGNAL CIRCUIT
1. Disconnect heated oxygen sensor 1 (front) harness connector and ECM harness connector.
2. Check harness continuity between ECM terminal 62 and heated oxygen sensor 1 (front) harness connector terminal 2.
Continuity should exist.
3. Check harness continuity between ECM terminal 62 (or terminal 2) and ground.
Continuity should not exist.
4. Also check harness for short to power.
OK or NG
OK©GO TO 7.
NG©Repair open circuit or short to ground or short to power in harness or connectors.
Mass air flow sensor
harness connector
Air cleaner
DTC P0133 HEATED OXYGEN SENSOR 1
(FRONT) (RESPONSE MONITORING)SR20DE
Diagnostic Procedure (Cont'd)
EC-167

Component InspectionNCEC0127HEATED OXYGEN SENSOR 1 (B1)NCEC0127S02With CONSULT-II
1) Start engine and warm it up to normal operating temperature.
2) Select ªMANU TRIGº and ªHI SPEEDº in ªDATA MONITORº
mode, and select ªHO2S1 (B1)º and ªHO2S1 MNTR (B1)º.
3) Hold engine speed at 2,000 rpm under no load during the fol-
lowing steps.
4) Touch ªRECORDº on CONSULT-II screen.
5) Check the following.
IªHO2S1 MNTR (B1)º in ªDATA MONITORº mode changes from
ªRICHº to ªLEANº to ªRICHº five times in 10 seconds.
5 times (cycles) are counted as shown below:
R = ªHO2S1 MNTR (B1)º, ªRICHº
L = ªHO2S1 MNTR (B1)º, ªLEANº
IªHO2S1 (B1)º voltage goes above 0.6V at least once.
IªHO2S1 (B1)º voltage goes below 0.3V at least once.
IªHO2S1 (B1)º voltage never exceeds 1.0V.
CAUTION:
Discard any heated oxygen sensor which has been dropped
from a height of more than 0.5 m (19.7 in) onto a hard surface
such as a concrete floor; use a new one.
Without CONSULT-II
1) Start engine and warm it up to normal operating temperature.
2) Set voltmeter probes between ECM terminal 62 (Heated oxy-
gen sensor 1 (front) signal) and engine ground.
3) Check the following with engine speed held at 2,000 rpm con-
stant under no load.
IMalfunction indicator goes on more than five times within 10
seconds in Diagnostic Test Mode II (HEATED OXYGEN SEN-
SOR 1 (FRONT) MONITOR).
IThe maximum voltage is over 0.6V at least one time.
IThe minimum voltage is below 0.3V at least one time.
IThe voltage never exceeds 1.0V.
CAUTION:
Discard any heated oxygen sensor which has been dropped
from a height of more than 0.5 m (19.7 in) onto a hard surface
such as a concrete floor; use a new one.
SEF646Y
SEF647Y
SEF648Y
FR O2 SENSOR
x0.01V-09²99
-02²89
SEF011X
DTC P0133 HEATED OXYGEN SENSOR 1
(FRONT) (RESPONSE MONITORING)SR20DE
Component Inspection
EC-169

On Board Diagnosis LogicNCEC0131To judge the malfunction, the diagnosis checks that the heated
oxygen sensor 1 (front) output is not inordinately high.
DTC No. Malfunction is detected when ... Check Items (Possible Cause)
P0134
0134IAn excessively high voltage from the sensor is sent to
ECM.IHarness or connectors
(The sensor circuit is open or shorted.)
IHeated oxygen sensor 1 (front)
DTC Confirmation ProcedureNCEC0132NOTE:
If ªDTC Confirmation Procedureº has been previously conducted,
always turn ignition switch ªOFFº and wait at least 9 seconds
before conducting the next test.
With CONSULT-II
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.
4) Select ªDATA MONITORº mode with CONSULT-II.
5) Restart engine and let it idle for 2 minutes.
6) If 1st trip DTC is detected, go to ªDiagnostic Procedureº, EC-
SR-173.
With GST
1) Start engine and warm it up to normal operating temperature.
2) Turn ignition switch ªOFFº and wait at least 9 seconds.
3) Restart engine and let it idle for 2 minutes.
4) Turn ignition switch ªOFFº and wait at least 9 seconds.
5) Restart engine and let it idle for 2 minutes.
6) Select ªMODE 3º with GST.
7) If DTC is detected, go to ªDiagnostic Procedureº, EC-SR-173.
IWhen using GST, ªDTC Confirmation Procedureº should
be performed twice as much as when using CONSULT-II or
ECM (Diagnostic Test Mode II) because GST cannot dis-
play MODE 7 (1st trip DTC) concerning this diagnosis.
Therefore, using CONSULT-II or ECM (Diagnostic Test
Mode II) is recommended.
SEF301U
SEF058Y
DTC P0134 HEATED OXYGEN SENSOR 1
(FRONT) (HIGH VOLTAGE)SR20DE
On Board Diagnosis Logic
EC-171

Component InspectionNCEC0135HEATED OXYGEN SENSOR 1 (FRONT)NCEC0135S01With CONSULT-II
1) Start engine and warm it up to normal operating temperature.
2) Select ªMANU TRIGº and ªHI SPEEDº in ªDATA MONITORº
mode, and select ªHO2S1 (B1)º and ªHO2S1 MNTR (B1)º.
3) Hold engine speed at 2,000 rpm under no load during the fol-
lowing steps.
4) Touch ªRECORDº on CONSULT-II screen.
5) Check the following.
IªHO2S1 MNTR (B1)º in ªDATA MONITORº mode changes from
ªRICHº to ªLEANº to ªRICHº five times in 10 seconds.
5 times (cycles) are counted as shown below:
R = ªHO2S1 MNTR (B1)º, ªRICHº
L = ªHO2S1 MNTR (B1)º, ªLEANº
IªHO2S1 (B1)º voltage goes above 0.6V at least once.
IªHO2S1 (B1)º voltage goes below 0.3V at least once.
IªHO2S1 (B1)º voltage never exceeds 1.0V.
CAUTION:
Discard any heated oxygen sensor which has been dropped
from a height of more than 0.5 m (19.7 in) onto a hard surface
such as a concrete floor; use a new one.
Without CONSULT-II
1) Start engine and warm it up to normal operating temperature.
2) Set voltmeter probes between ECM terminal 62 (Heated oxy-
gen sensor 1 (front) signal) and engine ground.
3) Check the following with engine speed held at 2,000 rpm con-
stant under no load.
IMalfunction indicator goes on more than five times within 10
seconds in Diagnostic Test Mode II (HEATED OXYGEN SEN-
SOR 1 (FRONT) MONITOR).
IThe maximum voltage is over 0.6V at least one time.
IThe minimum voltage is below 0.3V at least one time.
IThe voltage never exceeds 1.0V.
CAUTION:
Discard any heated oxygen sensor which has been dropped
from a height of more than 0.5 m (19.7 in) onto a hard surface
such as a concrete floor; use a new one.
SEF646Y
SEF647Y
SEF648Y
FR O2 SENSOR
x0.01V-09²99
-02²89
SEF011X
DTC P0134 HEATED OXYGEN SENSOR 1
(FRONT) (HIGH VOLTAGE)SR20DE
Component Inspection
EC-174

DescriptionNCEC0136SYSTEM DESCRIPTIONNCEC0136S01
Sensor Input Signal to ECMECM func-
tionActuator
Camshaft position sensor Engine speedHeated oxy-
gen sensor
1 (front)
heater con-
trolHeated oxygen sensor 1 (front)
heater
The ECM performs ON/OFF control of the heated oxygen sensor 1 (front) heater corresponding to the engine
operating condition.
OPERATIONNCEC0136S02
Engine speed Heated oxygen sensor 1 (front) heater
Above 3,200 rpm OFF
More than 20 seconds after exceeding 3,200 rpm ON
CONSULT-II Reference Value in Data Monitor
Mode
NCEC0137Specification data are reference values.
MONITOR ITEM CONDITION SPECIFICATION
HO2S2 HTR (B1)IEngine speed: Below 3,200 rpm ON
IMore than 20 seconds after exceeding 3,200 rpm OFF
ECM Terminals and Reference ValueNCEC0138Specification data are reference values and are measured between each terminal and 48 (ECM ground).
TERMI-
NAL NO.WIRE
COLORITEM CONDITION DATA (DC Voltage)
4LHeated oxygen sensor 1
(front) heater[Engine is running]
IEngine speed is below 3,200 rpm.Approximately 0V
[Engine is running]
IMore than 20 seconds after exceeding
3,200 rpm.BATTERY VOLTAGE
(11 - 14V)
On Board Diagnosis LogicNCEC0139
DTC No. Malfunction is detected when ... Check Items (Possible Cause)
P0135
0135IThe current amperage in the heated oxygen sensor 1
(front) heater circuit is out of the normal range.
(An improper voltage drop signal is sent to ECM through
the heated oxygen sensor 1 (front) heater.)IHarness or connectors
(The heated oxygen sensor 1 (front) heater cir-
cuit is open or shorted.)
IHeated oxygen sensor 1 (front) heater
DTC Confirmation ProcedureNCEC0140NOTE:
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:
Before performing the following procedure, confirm that bat-
tery voltage is between 10.5V and 16V at idle.
DTC P0135 HEATED OXYGEN SENSOR 1 (FRONT) HEATERSR20DE
Description
EC-175

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

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) circuit. During this check, a 1st trip DTC might
not be confirmed.
Without CONSULT-II
1) Start engine and drive vehicle at a speed of more than 70 km/h
(43 MPH) for 2 consecutive minutes.
2) Stop vehicle with engine running.
3) Set voltmeter probes between ECM terminals 63 (Heated oxy-
gen sensor 2 (rear) signal) and engine ground.
4) Check the voltage when revving engine up to 4,000 rpm under
no load at least 10 times.
(Depress and release accelerator pedal as soon as possible.)
The voltage should be below 0.43V at least once during
this procedure.
If the voltage can be confirmed in step 4, step 5 is not
necessary.
5) Keep vehicle at idling for 10 minutes, then check the voltage.
Or check the voltage when coasting from 80 km/h (50 MPH)
in 3rd gear position (M/T), D position with ªSPORTS MODE
SWº OFF or without ªMANUAL MODEº (CVT).
The voltage should be below 0.43V at least once during
this procedure.
6) If NG, go to ªDiagnostic Procedureº, EC-SR-184.
SEF032X
DTC P0137 HEATED OXYGEN SENSOR 2
(REAR) (MIN. VOLTAGE MONITORING)SR20DE
Overall Function Check
EC-182

Component InspectionNCEC0152HEATED OXYGEN SENSOR 2 (REAR)NCEC0152S01With CONSULT-II
1) Start engine and drive vehicle at a speed of more than 70 km/h
(43 MPH) for 2 consecutive minutes.
2) Stop vehicle with engine running.
3) Select ªFUEL INJECTIONº in ªACTIVE TESTº mode, and
select ªHO2S2 (B1)º as the monitor item with CONSULT-II.
4) Check ªHO2S2 (B1)º at idle speed when adjusting ªFUEL
INJECTIONº to  25%.
ªRR O2 SEN -B1º should be above 0.48V at least once
when the ªFUEL INJECTIONº is +25%.ªHO2S2 (B1)º
should be below 0.43V at least once when the ªFUEL
INJECTIONº is þ25%.
CAUTION:
Discard any heated oxygen sensor which has been dropped
from a height of more than 0.5 m (19.7 in) onto a hard surface
such as a concrete floor; use a new one.
Without CONSULT-II
1) Start engine and drive vehicle at a speed of more than 70 km/h
(43 MPH) for 2 consecutive minutes.
2) Stop vehicle with engine running.
3) Set voltmeter probes between ECM terminals 63 (Heated oxy-
gen sensor 2 (rear) signal) and engine ground.
4) Check the voltage when revving up to 4,000 rpm under no load
at least 10 times.
(Depress and release accelerator pedal as soon as possible.)
The voltage should be above 0.48V at least once.
If the voltage is above 0.48V at step 4, step 5 is not nec-
essary.
5) Check the voltage when revving up to 6,000 rpm under no
load. Or keep vehicle at idling for 10 minutes, then check the
voltage. Or check the voltage when coasting from 80 km/h (50
MPH) in 3rd gear position (M/T), D position with ªSPORTS
MODE SWº OFF or without ªMANUAL MODEº (CVT).
The voltage should be below 0.43V at least once.
CAUTION:
Discard any heated oxygen sensor which has been dropped
from a height of more than 0.5 m (19.7 in) onto a hard surface
such as a concrete floor; use a new one.
SEF662Y
SEF989R (Reference data)
The voltage should be above
0.48V at least one time.
The voltage should be below
0.43V at least one time.
x0.01V
SEF032X
CONNECT
DTC P0137 HEATED OXYGEN SENSOR 2
(REAR) (MIN. VOLTAGE MONITORING)SR20DE
Component Inspection
EC-186

Component DescriptionNCEC0153The 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
NCEC0154Specification data are reference values.
MONITOR ITEM CONDITION SPECIFICATION
HO2S2 (B1)
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 ValueNCEC0155Specification 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 2,000 rpm0 - Approximately 1.0V
On Board Diagnosis LogicNCEC0156The 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 maxi-
mum voltage of the sensor is sufficiently high during various driv-
ing conditions such as fuel-cut.
DTC No. Malfunction is detected when ... Check Items (Possible Cause)
P0138
0138IThe maximum 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
IIntake air leaks
SEF327R
SEF259V OK NG
1V
0.43V
0V
DTC P0138 HEATED OXYGEN SENSOR 2
(REAR) (MAX. VOLTAGE MONITORING)SR20DE
Component Description
EC-187

RESULTSº. If ªNGº is displayed, refer to ªDiagnostic
Procedureº, EC-SR-191.
Overall Function CheckNCEC0158Use this procedure to check the overall function of the heated oxy-
gen sensor 2 (rear) circuit. During this check, a 1st trip DTC might
not be confirmed.
Without CONSULT-II
1) Start engine and drive vehicle at a speed of 70 km/h (43 MPH)
for 2 consecutive minutes.
2) Stop vehicle with engine running.
3) Set voltmeter probes between ECM terminals 63 (Heated oxy-
gen sensor 2 (rear) signal) and engine ground.
4) Check the voltage when revving engine up to 4,000 rpm under
no load at least 10 times.
(Depress and release accelerator pedal as soon as possible.)
The voltage should be above 0.48V at least once during
this procedure.
If the voltage can be confirmed in step 4, step 5 is not
necessary.
5) Keep vehicle at idling for 10 minutes, then check the voltage.
Or check the voltage when coasting from 80 km/h (50 MPH)
in 3rd gear position (M/T), D position with ªSPORTS MODE
SWº OFF or without ªMANUAL MODEº (CVT).
The voltage should be above 0.48V at least once during
this procedure.
6) If NG, go to ªDiagnostic Procedureº, EC-SR-191.
SEF032X
CONNECT
DTC P0138 HEATED OXYGEN SENSOR 2
(REAR) (MAX. VOLTAGE MONITORING)SR20DE
Overall Function Check
EC-189