Nissan Note [1331/1872] Ec 1331

Nissan Note [1331/1872] Ec 1331
TROUBLE DIAGNOSIS - SPECIFICATION VALUE
EC-1331
[HR (WITHOUT EURO-OBD)]
C
D
E
F
G
H
I
J
K
L
M
A
EC
10. DETECT MALFUNCTIONING PART
1. Check the following.
Ignition coil and its circuit (Refer to EC-1580, "IGNITION SIGNAL" .)
Fuel injector and its circuit (Refer to EC-1537, "FUEL INJECTOR" .)
Intake air leakage
Low compression pressure (Refer to EM-173, "CHECKING COMPRESSION PRESSURE" .)
2. If NG, repair or replace the malfunctioning part.
If OK, replace fuel injector. (It may be caused by leakage from fuel injector or clogging.)
>> GO TO 11.
11. CHECK “A/F ALPHA-B1”
1. Start engine.
2. Select “A/F ALPHA-B1” in “DATA MONITOR (SPEC)” mode, and make sure that the each indication is
within the SP value.
OK or NG
OK >> INSPECTION END
NG >> GO TO 12.
12. CHECK HEATED OXYGEN SENSOR 1 FUNCTION
1. Run engine at about 2,000 rpm for about 2 minutes under no load.
2. Select “HO2S1 MNTR (B1)”, in “DATA MONITOR” mode.
3. Running engine at 2,000 rpm under no load (The engine is
warmed up to normal operating temperature.), check that the
monitor fluctuates between LEAN and RICH more than 5 times
during 10 seconds.
OK or NG
OK >> GO TO 15.
NG >> GO TO 13.
13. CHECK HEATED OXYGEN SENSOR 1 CIRCUIT
Check heated oxygen sensor 1 and its circuit. Refer to EC-1381, "
DTC P0134 HO2S1" .
>> GO TO 14.
14. CHECK “A/F ALPHA-B1”
1. Start engine.
2. Select “A/F ALPHA-B1” in “DATA MONITOR (SPEC)” mode, and make sure that the each indication is
within the SP value.
OK or NG
OK >> INSPECTION END
NG >> GO TO 15.
1 time : RICH LEAN RICH
2times :RICH LEAN RICH LEAN RICH
SEF820Y

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