Nissan Note [1554/1872] Ec 1554

Nissan Note [1554/1872] Ec 1554
EC-1554
[HR (WITHOUT EURO-OBD)]
HO2S1
7. CHECK HO2S1 INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Check harness continuity between ECM terminal 49 and HO2S1 terminal 4.
Refer to Wiring Diagram.
2. Check harness continuity between ECM terminal 49 or HO2S1 terminal 4 and ground.
Refer to Wiring Diagram.
3. Also check harness for short to power.
OK or NG
OK >> GO TO 8.
NG >> Repair open circuit or short to ground or short to power in harness or connectors.
8. CHECK MASS AIR FLOW SENSOR
Refer to EC-1359, "
Component Inspection" .
OK or NG
OK >> GO TO 9.
NG >> Replace mass air flow sensor.
9. CHECK PCV VALVE
Refer to EC-1262, "
Component Inspection" .
OK or NG
OK >> GO TO 10.
NG >> Replace PCV valve.
10. CHECK HEATED OXYGEN SENSOR 1
Refer to EC-1555, "
Component Inspection" .
OK or NG
OK >> GO TO 11.
NG >> Replace heated oxygen sensor 1.
11. CHECK INTERMITTENT INCIDENT
Refer to EC-1336, "
TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .
>> INSPECTION END
Continuity should exist.
Continuity should not exist.

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