Nissan Almera Tino V10. Instruction — part 397
EC-414
[QG (WITH EURO-OBD)]
DTC P1143 HO2S1 (M/T MODELS)
Without CONSULT-II
1.
Start engine and warm it up to normal operating temperature.
2.
Set voltmeter probes between ECM terminal 35 (HO2S1 signal) and engine ground.
3.
Check the following with engine speed held at 2,000 rpm con-
stant under no load.
●
The voltage fluctuates between 0 to 0.3V and 0.6 to 1.0V
more than 5 times within 10 seconds.
●
The maximum voltage is over 0.6V at least one time.
●
The minimum voltage is below 0.3V at least one time.
●
The voltage never exceeds 1.0V.
1 time: 0 - 0.3V
→
0.6 - 1.0V
→
0 - 0.3V
2 times: 0 - 0.3V
→
0.6 - 1.0V
→
0 - 0.3V
→
0.6 - 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.
●
Before installing new oxygen sensor, clean exhaust system threads using Oxygen Sensor Thread
Cleaner tool J-43897-18 or J-43897-12 and approved anti-seize lubricant.
Removal and Installation
EBS00QPU
HEATED OXYGEN SENSOR 1
Refer to
EM-21, "EXHAUST MANIFOLD AND CATALYTIC CONVERTER"
.
MBIB0018E
DTC P1143, P1163 HO2S1 (A/T MODELS)
EC-415
[QG (WITH EURO-OBD)]
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EC
DTC P1143, P1163 HO2S1 (A/T MODELS)
PFP:22690
Component Description
EBS00QPV
The heated oxygen sensor 1 is placed into the exhaust manifold. It
detects the amount of oxygen in the exhaust gas compared to the
outside air. The heated oxygen sensor 1 has a closed-end tube
made of ceramic zirconia. The zirconia generates voltage from
approximately 1V in richer conditions to 0V in leaner conditions. The
heated oxygen sensor 1 signal is sent to the ECM. The ECM adjusts
the injection pulse duration to achieve the ideal air-fuel ratio. The
ideal air-fuel ratio occurs near the radical change from 1V to 0V.
CONSULT-II Reference Value in Data Monitor Mode
EBS00QPW
Specification data are reference values.
On Board Diagnosis Logic
EBS00QPX
To judge the malfunction, the output from the heated oxygen sensor
1 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 malfunction will be detected.
SEF463R
SEF288D
MONITOR ITEM
CONDITION
SPECIFICATION
HO2S1 (B1)
HO2S1 (B2)
●
Engine: After warming up
Maintaining engine speed at 2,000
rpm
0 - 0.3V
←→
Approx. 0.6 - 1.0V
HO2S1 MNTR (B1)
HO2S1 MNTR (B2)
LEAN
←→
RICH
Changes more than 5 times dur-
ing 10 seconds.
SEF300U
DTC No.
Trouble diagnosis name
DTC detecting condition
Possible cause
P1143
1143
(Bank 1)
Heated oxygen sensor 1
lean shift monitoring
The maximum and minimum voltage from the
sensor are not reached to the specified voltages.
●
Heated oxygen sensor 1
●
Heated oxygen sensor 1 heater
●
Fuel pressure
●
Injectors
●
Intake air leaks
P1163
1163
(Bank 2)
EC-416
[QG (WITH EURO-OBD)]
DTC P1143, P1163 HO2S1 (A/T MODELS)
DTC Confirmation Procedure
EBS00QPY
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 10 seconds before conducting the next test.
TESTING CONDITION:
●
Always perform at a temperature above
−
10
°
C (14
°
F).
●
Before performing 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 10 seconds.
3.
Turn ignition switch “ON” and select “HO2S1 (B1) P1143” of “HO2S1” or “HO2S1 (B2) P1163” of “HO2S1”
in “DTC WORK SUPPORT” mode with CONSULT-II.
4.
Touch “START”.
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, “TESTING” will be dis-
played on the CONSULT-II screen. Maintain the conditions con-
tinuously until “TESTING” changes to “COMPLETED”. (It will
take approximately 50 seconds or more.)
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
.
PBIB0546E
ENG SPEED
1,200 - 2,600 rpm
Vehicle speed
50 - 100 km/h (30 - 62 MPH)
B/FUEL SCHDL
3.0 - 6.5 msec
Selector lever
Suitable position
PBIB0547E
SEC769C
DTC P1143, P1163 HO2S1 (A/T MODELS)
EC-417
[QG (WITH EURO-OBD)]
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EC
Overall Function Check
EBS00QPZ
Use this procedure to check the overall function of the heated oxygen sensor 1 circuit. During this check, a
DTC might not be confirmed.
WITH GST
1.
Start engine and warm it up to normal operating temperature.
2.
Set voltmeter probes between ECM terminal 35 [HO2S1 (B1) signal] or 36 [HO2S1 (B2) signal] and
engine ground.
3.
Check one of the following with engine speed held at 2,000 rpm
constant under no load.
–
The maximum voltage is over 0.6V at least one time.
–
The minimum voltage is over 0.1V at least one time.
4.
If NG, go to
EC-417, "Diagnostic Procedure"
.
Diagnostic Procedure
EBS00QQ0
1.
RETIGHTEN GROUND SCREWS
1.
Turn ignition switch “OFF”.
2.
Loosen and retighten engine ground screws.
>> GO TO 2.
2.
RETIGHTEN HEATED OXYGEN SENSOR 1
Loosen and retighten corresponding heated oxygen sensor 1.
>> GO TO 3.
MBIB0019E
MBIB0095E
Tightening torque: 40 - 60 N·m (4.1 - 6.2 kg-m, 30 - 44 ft-lb)
MBIB0099E
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