2003 NISSAN ALMERA N16 Electronic Repair Manual

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Page 841 of 3189

NISSAN ALMERA N16 2003 Electronic Repair Manual DTC P0132 HO2S1
EC-511
[QG (WITHOUT EURO-OBD)]
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EC
6. Check the following.
●“HO2S1 MNTR (B1)” in “DATA MONITOR” mode changes
from “RICH” to “LEAN” to “

Page 842 of 3189

NISSAN ALMERA N16 2003 Electronic Repair Manual EC-512
[QG (WITHOUT EURO-OBD)]
DTC P0134 HO2S1
DTC P0134 HO2S1
PFP:22690
Component DescriptionEBS00KG4
The heated oxygen sensor 1 is placed into the exhaust manifold. It
detects the amount

Page 843 of 3189

NISSAN ALMERA N16 2003 Electronic Repair Manual DTC P0134 HO2S1
EC-513
[QG (WITHOUT EURO-OBD)]
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Overall Function CheckEBS00KG7
Use this procedure to check the overall function of the heated oxygen sensor 1 circ

Page 844 of 3189

NISSAN ALMERA N16 2003 Electronic Repair Manual EC-514
[QG (WITHOUT EURO-OBD)]
DTC P0134 HO2S1
Wiring Diagram
EBS00KG8
YEC281A

Page 845 of 3189

NISSAN ALMERA N16 2003 Electronic Repair Manual DTC P0134 HO2S1
EC-515
[QG (WITHOUT EURO-OBD)]
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Specification data are reference values and are measured between each terminal and ground.
CAUTION:
Do not use ECM ground termi

Page 846 of 3189

NISSAN ALMERA N16 2003 Electronic Repair Manual EC-516
[QG (WITHOUT EURO-OBD)]
DTC P0134 HO2S1
4. CHECK HEATED OXYGEN SENSOR 1
Refer to EC-515, "
Diagnostic Procedure" .
OK or NG
OK >> GO TO 5.
NG >> Replace heated oxygen sensor 1.
5. CHECK

Page 847 of 3189

NISSAN ALMERA N16 2003 Electronic Repair Manual DTC P0134 HO2S1
EC-517
[QG (WITHOUT EURO-OBD)]
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EC
●Before installing new oxygen sensor, clean exhaust system threads using Oxygen Sensor
Thread Cleaner tool J-43897-18 or J

Page 848 of 3189

NISSAN ALMERA N16 2003 Electronic Repair Manual EC-518
[QG (WITHOUT EURO-OBD)]
DTC P0138 HO2S2
DTC P0138 HO2S2
PFP:226A0
Component DescriptionEBS00KGC
The heated oxygen sensor 2, after three way catalyst (manifold),
monitors the oxygen lev

EC-518
[QG (WITHOUT EURO-OBD)]
DTC P0138 HO2S2
DTC P0138 HO2S2
PFP:226A0
Component DescriptionEBS00KGC
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 ModeEBS00KGD
Specification data are reference values.
On Board Diagnosis LogicEBS00KGE
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 before 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.
DTC Confirmation ProcedureEBS00KGF
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.
SEF327R
MONITOR ITEM CONDITION SPECIFICATION
HO2S2 (B1)
●Engine: After warming up
●Keeping the engine speed
between 3,500 and 4,000 rpm
for one minute and at idle for
one minute under no loadRevving engine from idle to 3,000
rpm quickly.0 - 0.3V ←→ Approx. 0.6 - 1.0V
HO2S2 MNTR (B1)
●Engine: After warming up
●Keeping the engine speed
between 3,500 and 4,000 rpm
for one minute and at idle for
one minute under no loadRevving engine from idle to 3,000
rpm quickly.LEAN ←→ RICH
SEF301U
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P0138
0138Heated oxygen sensor 2
circuit high voltageAn excessively high voltage from the sensor
is sent to ECM.
●Harness or connectors
(The sensor circuit is open or shorted.)
●Heated oxygen sensor 2

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