Nissan Almera Tino V10. Manual — part 406
EC-450
[QG (WITH EURO-OBD)]
DTC P1146, P1166 HO2S2 (A/T MODELS)
5.
Select “FUEL INJECTION” in “ACTIVE TEST” mode, and select
“HO2S2 (B1)/(B2)” as the monitor item with CONSULT-II.
6.
Check “HO2S2 (B1)/(B2)” at idle speed when adjusting “FUEL INJECTION” to
±
25%.
“HO2S2 (B1)/(B2)” should be above 0.68V at least once when the “FUEL INJECTION” is +25%.
“HO2S2 (B1)/(B2)” should be below 0.56V at least once when the “FUEL INJECTION” is
−
25%.
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.
Without CONSULT-II
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 one minute.
5.
Set voltmeter probes between ECM terminal 16 [HO2S2 (B1) signal] or 17 [HO2S2 (B2) signal] and
engine ground.
6.
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 0.68V at least once during this
procedure.
If the voltage is above 0.68V at step 6, step 7 is not neces-
sary.
7.
Keep vehicle at idling for 10 minutes, then check voltage. Or
check the voltage when coasting from 80 km/h (50 MPH) in “D”
position with “OD” OFF.
The voltage should be below 0.56V at least once during this
procedure.
8.
If NG, replace heated oxygen sensor 2.
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
SEF244YA
MBIB0021E
DTC P1146, P1166 HO2S2 (A/T MODELS)
EC-451
[QG (WITH EURO-OBD)]
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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
EBS00QR0
HEATED OXYGEN SENSOR 2
Refer to
EM-21, "EXHAUST MANIFOLD AND CATALYTIC CONVERTER"
.
EC-452
[QG (WITH EURO-OBD)]
DTC P1147 HO2S2 (M/T MODELS)
DTC P1147 HO2S2 (M/T MODELS)
PFP:226A0
Component Description
EBS00QR1
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
EBS00QR2
Specification data are reference values.
On Board Diagnosis Logic
EBS00QR3
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 maximum voltage of the sensor
is sufficiently high during the various driving condition such as fuel-
cut.
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 load
Revving engine from idle to 3,000
rpm quickly.
0 - 0.3V
←→
Approx. 0.6 - 1.0V
HO2S2 MNTR (B1)
LEAN
←→
RICH
SEF259VA
DTC No.
Trouble diagnosis name
DTC detecting condition
Possible cause
P1147
1147
Heated oxygen sensor 2
maximum voltage monitoring
The maximum voltage from the sensor is
not reached to the specified voltage.
●
Harness or connectors
(The sensor circuit open or shorted.)
●
Heated oxygen sensor 2
●
Fuel pressure
●
Injectors
●
Intake air leaks
DTC P1147 HO2S2 (M/T MODELS)
EC-453
[QG (WITH EURO-OBD)]
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DTC Confirmation Procedure
EBS00QR4
CAUTION:
Always drive vehicle at a safe speed.
NOTE:
●
“COMPLETED” will appear on CONSULT-II screen when all tests “COND1”, “COND2” and
“COND3” are completed.
●
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:
Never stop engine during this procedure. If the engine is stopped, retry procedure from step 2 in “Pro-
cedure for COND1”
WITH CONSULT-II
Procedure for COND1
For the best results, perform “DTC WORK SUPPORT” at a temperature of 0 to 30
°
C (32 to 86
°
F).
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 one minute.
5.
Select “HO2S2 (B1) P1147” of “HO2S2” in “DTC WORK SUPPORT” mode with CONSULT-II.
6.
Touch “START”.
7.
Let it idle for at least 30 seconds.
8.
Rev engine up to 2,000 rpm 2 or 3 times quickly under no load.
If “COMPLETED” appears on CONSULT-II screen, go to step 2 in “Procedure for COND3”.
If “COMPLETED” does not appear on CONSULT-II screen, go to the following step.
9.
When the following conditions are met, “TESTING” will be displayed at COND1” on the CONSULT-II
screen. Maintain the conditions continuously until “TESTING” changes to “COMPLETED”. (It will take
approximately 60 seconds.)
NOTE:
●
If “TESTING” is not displayed after 5 minutes, retry from step 2 in “Procedure for COND1”.
●
If “COMPLETED” already appears at “COND2” on CONSULT-II screen before “Procedure for
COND2” is conducted, it is unnecessary to conduct step 1 in “Procedure for COND2”.
ENG SPEED
More than 1,000 rpm
B/FUEL SCHDL
More than 1.0 msec
COOLANT TEMP/S
70 - 105
°
C
Selector lever
Suitable position
PBIB0557E
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