Nissan Primera P11. Instruction — part 238
On Board Diagnosis Logic
NCEC0106
To judge the malfunction, the output from the heated oxygen sen-
sor 1 (front) is monitored to determine whether the “rich” output is
sufficiently high and whether the “lean” output is sufficiently low.
When both the outputs are shifting to the lean side, the malfunc-
tion will be detected.
DTC No.
Malfunction is detected when ...
Check Items (Possible Cause)
P0131
0131
I
The maximum and minimum voltages from the sensor
are not reached to the specified voltages.
I
Heated oxygen sensor 1 (front)
I
Heated oxygen sensor 1 (front) heater
I
Fuel pressure
I
Injectors
I
Intake air leaks
DTC Confirmation Procedure
NCEC0107
CAUTION:
Always drive vehicle at a safe speed.
NOTE:
If “DTC Confirmation Procedure” has been previously conducted,
always turn ignition switch “OFF” and wait at least 9 seconds
before conducting the next test.
TESTING CONDITION:
I
Always perform at a temperature above −10°C (14°F).
I
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 “ON” and select “HO2S1 P0131” of
“HO2S1” in “DTC WORK SUPPORT” mode with CONSULT-II.
4)
Touch “START”.
5)
Start engine and let it idle for at least 3.5 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, “TESTING” will be dis-
played on the CONSULT-II screen. Maintain the conditions
continuously until “TESTING” changes to “COMPLETED”. (It
will take approximately 20 seconds or more.)
SEF300U
SEF827Y
SEF828Y
SEF651Y
DTC P0131 HEATED OXYGEN SENSOR 1
(FRONT) (LEAN SHIFT MONITORING)
SR20DE
On Board Diagnosis Logic
EC-151
ENG SPEED
1,800 - 2,900 rpm (CVT)
2,000 - 3,100 rpm (M/T)
Vehicle speed
80 - 120 km/h (50 - 75 MPH)
B/FUEL SCHDL
4.5 - 14.0 msec (CVT)
3.5 - 12.0 msec (M/T)
Selector lever
Suitable position
If “TESTING” is not displayed after 5 minutes, retry from
step 2.
7)
Make sure that “OK” is displayed after touching “SELF-DIAG
RESULTS”.
If
“NG”
is
displayed,
refer
to
“Diagnostic
Procedure”, EC-SR-153.
Overall Function Check
NCEC0108
Use this procedure to check the overall function of the heated oxy-
gen sensor 1 (front) circuit. During this check, a 1st trip DTC might
not be confirmed.
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.
I
The maximum voltage is over 0.6V at least one time.
I
The minimum voltage is over 0.1V at least one time.
4)
If NG, go to “Diagnostic Procedure”, EC-SR-153.
SEF011X
DTC P0131 HEATED OXYGEN SENSOR 1
(FRONT) (LEAN SHIFT MONITORING)
SR20DE
DTC Confirmation Procedure (Cont’d)
EC-152
Diagnostic Procedure
NCEC0109
1
RETIGHTEN HEATED OXYGEN SENSOR 1 (FRONT)
1. Turn ignition switch “OFF”.
2. Loosen and retighten heated oxygen sensor 1 (front).
Tightening torque:
40 - 60 N
⋅
m (4.1 - 6.1 kg-m, 30 - 44 ft-lb)
©
GO TO 2.
2
CLEAR THE SELF-LEARNING DATA.
With CONSULT-II
1. Start engine and warm it up to normal operating temperature.
2. Select “SELF-LEARN CONTROL” in “WORK SUPPORT” mode with CONSULT-II.
3. Clear the self-learning control coefficient by touching “CLEAR”.
SEF652Y
4. Run engine for at least 10 minutes at idle speed.
Is the 1st trip DTC P0171 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 “OFF”.
3. Disconnect mass air flow sensor harness connector, and restart and run engine for at least 3 seconds at idle speed.
SEF203X
4. 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 “HOW TO ERASE EMISSION-RELATED DIAGNOSTIC
INFORMATION”, 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 detected? Is it difficult to start engine?
Yes or No
Yes
©
Perform trouble diagnosis for DTC P0171. Refer to EC-SR-212.
No
©
GO TO 3.
Mass air flow sensor
harness connector
Air cleaner
DTC P0131 HEATED OXYGEN SENSOR 1
(FRONT) (LEAN SHIFT MONITORING)
SR20DE
Diagnostic Procedure
EC-153
3
CHECK HEATED OXYGEN SENSOR 1 (FRONT) HEATER
Refer to “Component Inspection”, EC-SR-179.
OK or NG
OK
©
GO TO 4.
NG
©
Replace heated oxygen sensor 1 (front).
4
CHECK HEATED OXYGEN SENSOR 1 (FRONT)
Refer to “Component Inspection”, EC-SR-154.
OK or NG
OK
©
GO TO 5.
NG
©
Replace heated oxygen sensor 1 (front).
5
CHECK INTERMITTENT INCIDENT
Perform “TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT”, EC-SR-114.
Refer to “Wiring Diagram”, EC-SR-147, for circuit.
©
INSPECTION END
Component Inspection
NCEC0110
HEATED OXYGEN SENSOR 1 (FRONT)
NCEC0110S02
With CONSULT-II
1)
Start engine and warm it up to normal operating temperature.
2)
Select “MANU TRIG” and “HI SPEED” in “DATA MONITOR”
mode, and select “HO2S1 (B1)” and “HO2S1 MNTR (B1)”.
3)
Hold engine speed at 2,000 rpm under no load during the fol-
lowing steps.
4)
Touch “RECORD” on CONSULT-II screen.
5)
Check the following.
I
“HO2S1 MNTR (B1)” in “DATA MONITOR” mode changes from
“RICH” to “LEAN” to “RICH” 5 times in 10 seconds.
5 times (cycles) are counted as shown below:
R = “HO2S1 MNTR (B1)”, “RICH”
L = “HO2S1 MNTR (B1)”, “LEAN”
I
“HO2S1 (B1)” voltage goes above 0.6V at least once.
I
“HO2S1 (B1)” voltage goes below 0.3V at least once.
I
“HO2S1 (B1)” 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
-09
″
99
-02
″
89
DTC P0131 HEATED OXYGEN SENSOR 1
(FRONT) (LEAN SHIFT MONITORING)
SR20DE
Diagnostic Procedure (Cont’d)
EC-154
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