Nissan Almera Tino V10. Manual — part 355
EC-246
[QG (WITH EURO-OBD)]
DTC P0134, P0154 HO2S1 (A/T MODELS)
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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
EBS00QKO
HEATED OXYGEN SENSOR 1
Refer to
EM-21, "EXHAUST MANIFOLD AND CATALYTIC CONVERTER"
.
DTC P0138 HO2S2 (M/T MODELS)
EC-247
[QG (WITH EURO-OBD)]
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DTC P0138 HO2S2 (M/T MODELS)
PFP:226A0
Component Description
EBS00QKP
The heated oxygen sensor 2, after three way catalyst (manifold),
monitors the oxygen level in the exhaust gas.
Even if switching characteristics of the heated oxygen sensor 1 are
shifted, the air-fuel ratio is controlled to stoichiometric, by the signal
from the heated oxygen sensor 2.
This sensor is made of ceramic zirconia. The zirconia generates volt-
age from approximately 1V in richer conditions to 0V in leaner condi-
tions.
Under normal conditions the heated oxygen sensor 2 is not used for
engine control operation.
CONSULT-II Reference Value in Data Monitor Mode
EBS00QKQ
Specification data are reference values.
On Board Diagnosis Logic
EBS00QKR
The heated oxygen sensor 2 has a much longer switching time
between rich and lean than the heated oxygen sensor 1. The oxygen
storage capacity of the three way catalyst (manifold) causes the
longer switching time. To judge the malfunctions of heated oxygen
sensor 2, ECM monitors whether the voltage is unusually high during
the various driving condition such as fuel-cut.
SEF327R
MONITOR ITEM
CONDITION
SPECIFICATION
HO2S2 (B1)
●
Engine: After warming up
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Keeping the engine speed
between 3,500 and 4,000 rpm
for one minute and at idle for
one minute under no load
Revving engine from idle to 3,000
rpm quickly.
0 - 0.3V
←→
Approx. 0.6 - 1.0V
HO2S2 MNTR (B1)
LEAN
←→
RICH
SEF301U
DTC No.
Trouble diagnosis name
DTC detecting condition
Possible cause
P0138
0138
Heated oxygen sensor 2
circuit high voltage
An excessively high voltage from the sensor
is sent to ECM.
●
Harness or connectors
(The sensor circuit is open or shorted.)
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Heated oxygen sensor 2
EC-248
[QG (WITH EURO-OBD)]
DTC P0138 HO2S2 (M/T MODELS)
DTC Confirmation Procedure
EBS00QKS
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.
WITH CONSULT-II
1.
Turn ignition switch “ON” and select “DATA MONITOR” mode with CONSULT-II.
2.
Start engine and warm it up to the normal operating temperature.
3.
Turn ignition switch “OFF” and wait at least 10 seconds.
4.
Start engine and keep the engine speed at between 3,500 and
4,000 rpm for least one minute under no load.
5.
Let engine idle for two minutes.
6.
If 1st trip DTC is detected, go to
EC-250, "Diagnostic Procedure"
.
WITH GST
1.
Start engine and warm it up to the normal operating temperature.
2.
Turn ignition switch “OFF” and wait at least 10 seconds.
3.
Start engine and keep the engine speed between 3,500 and 4,000 rpm for at least one minute under no
load.
4.
Let engine idle for two minutes.
5.
Turn ignition switch “OFF” and wait at least 10 seconds.
6.
Start engine and keep the engine speed between 3,500 and 4,000 rpm for at least one minute under no
load.
7.
Let engine idle for two minutes.
8.
Select “Mode 3” with GST.
9.
If NG, go to
EC-250, "Diagnostic Procedure"
.
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When using GST, “DTC Confirmation Procedure” should be performed twice as much as when
using CONSULT-II because GST cannot display MODE 7 (1st trip DTC) concerning this diagnosis.
Therefore, using CONSULT-II is recommended.
SEF174Y
DTC P0138 HO2S2 (M/T MODELS)
EC-249
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Wiring Diagram
EBS00QKT
YEC446A
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