Nissan Note [774/1872] System description

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Nissan Note [774/1872] System description
EC-774
[CR (WITHOUT EURO-OBD)]
HO2S2 HEATER
HO2S2 HEATER
PFP:226A0
Description
BBS003BS
SYSTEM DESCRIPTION
The ECM performs ON/OFF control of the heated oxygen sensor 2 heater corresponding to the engine speed,
amount of intake air and engine coolant temperature.
OPERATION
CONSULT-II Reference Value in Data Monitor Mode
BBS003BT
Specification data are reference values.
Sensor Input Signal to ECM ECM Function Actuator
Camshaft position sensor (PHASE)
Engine speed
Heated oxygen sensor 2
heater control
Heated oxygen sensor 2
heater
Crankshaft position sensor (POS)
Engine coolant temperature sensor Engine coolant temperature
Manifold absolute pressure (MAP) sensor Amount of intake air
Engine speed rpm Heated oxygen sensor 2 heater
Above 3,800 OFF
Below 3,800 rpm after the following conditions are met.
Engine: After warming up
Keeping the engine speed between 3,500 and 4,000 rpm for 1
minute and at idle for 1 minute under no load
ON
MONITOR ITEM CONDITION SPECIFICATION
HO2S2 HTR (B1)
Engine speed: Below 3,800 rpm after the following conditions are met.
Engine: After warming up
Keeping the engine speed at between 3,500 to 4,000 rpm for 1 minute
and at idle for 1 minute under no load
ON
Engine speed: Above 3,800 rpm OFF

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9427
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