Nissan Note — обзор работы и диагностики датчика кислорода в выхлопной системе [185/1872]

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Nissan Note [185/1872] On board diagnosis logic
DTC P0133 HO2S1
EC-185
[CR (WITH EURO-OBD)]
C
D
E
F
G
H
I
J
K
L
M
A
EC
DTC P0133 HO2S1 PFP:22690
Component Description
BBS002WG
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
BBS002WH
Specification data are reference values.
On Board Diagnosis Logic
BBS002WI
To judge the malfunction of heated oxygen sensor 1, this diagnosis
measures response time of heated oxygen sensor 1 signal. The time
is compensated by engine operating (speed and load), fuel feedback
control constant, and heated oxygen sensor 1 temperature index.
Judgment is based on whether the compensated time (heated oxy-
gen sensor 1 cycling time index) is inordinately long or not.
SEF463R
SEF288D
MONITOR ITEM CONDITION SPECIFICATION
HO2S1 (B1)
Engine: After warming up Maintaining engine speed at 2,000 rpm
0 - 0.3V ←→ Approx. 0.6 - 1.0V
HO2S1 MNTR (B1)
LEAN ←→ RICH
Changes more than 5 times dur-
ing 10 seconds.
PBIB2991E

Содержание

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Узнайте, как работает датчик кислорода в выхлопной системе, его роль в регулировке топливовоздушной смеси и методы диагностики его неисправностей.

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