Nissan Note [778/1872] Removal and installation

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Nissan Note [778/1872] Removal and installation
EC-778
[CR (WITHOUT EURO-OBD)]
HO2S2 HEATER
5. CHECK HO2S2 OUTPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Check harness continuity between ECM terminal 2 and HO2S2 terminal 3.
Refer to Wiring Diagram.
4. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 6.
NG >> Repair open circuit or short to ground or short to power in harness or connectors.
6. CHECK HEATED OXYGEN SENSOR 2 HEATER
Refer to EC-778, "
Component Inspection" .
OK or NG
OK >> GO TO 7.
NG >> Replace heated oxygen sensor 2.
7. CHECK INTERMITTENT INCIDENT
Refer to EC-542, "
TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .
>> INSPECTION END
Component Inspection
BBS003BW
HEATED OXYGEN SENSOR 2 HEATER
1. Check resistance between HO2S2 terminals as follows.
2. 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 sur-
face such as a concrete floor; use a new one.
Before installing new oxygen sensor, clean exhaust system
threads using Oxygen Sensor Thread Cleaner and
approved anti-seize lubricant.
Removal and Installation
BBS003BX
HEATED OXYGEN SENSOR 2
Refer to EX-3, "EXHAUST SYSTEM" .
Continuity should exist.
Terminal No. Resistance
2 and 3 8.0 - 10.0 at 25°C(77°F)
1 and 2, 3, 4
∞Ω
(Continuity should not exist)
4 and 1, 2, 3
SEF249Y

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