Nissan Note [1111/1872] Component inspection

Nissan Note [1111/1872] Component inspection
DTC P1144 HO2S1
EC-1111
[HR (WITH EURO-OBD)]
C
D
E
F
G
H
I
J
K
L
M
A
EC
5. CHECK HEATED OXYGEN SENSOR 1 HEATER
Refer to EC-990, "
Component Inspection" .
OK or NG
OK >> GO TO 6.
NG >> Replace heated oxygen sensor 1.
6. CHECK HEATED OXYGEN SENSOR 1
Refer to EC-975, "
Component Inspection" .
OK or NG
OK >> GO TO 7.
NG >> Replace heated oxygen sensor 1.
7. CHECK INTERMITTENT INCIDENT
Refer to EC-917, "
TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .
For circuit, refer to EC-970, "
Wiring Diagram" .
>> INSPECTION END
Component Inspection
BBS004G9
HEATED OXYGEN SENSOR 1
With CONSULT-II
1. Start engine and warm it up to normal operating temperature.
2. Select “MANU TRIG” and adjust TRIGGER POINT” to 100% in “DATA MONITOR” mode with CONSULT-
II.
3. Select “HO2S1 (B1)” and “HO2S1 MNTR (B1)”.
4. Hold engine speed at 2,000 rpm under no load during the follow-
ing steps.
5. Touch “RECORD” on CONSULT-II screen.
6. Check the following.
“HO2S1 MNTR (B1)” in “DATA MONITOR” mode changes
from “RICH” to “LEAN” to “RICH” more than 5 times in 10 sec-
onds.
5 times (cycles) are counted as shown in the figure.
“HO2S1 (B1)” voltage goes above 0.6V at least once.
“HO2S1 (B1)” voltage goes below 0.3V at least once.
“HO2S1 (B1)” voltage never exceeds 1.0V.
SEF646Y
SEF217YA

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