2007 INFINITI FX35 Service Manual

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INFINITI FX35 2007 Service Manual DTC P0133, P0153 A/F SENSOR 1 EC-929
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Revision: 2006 July 2007 FX35/FX45
DTC P0133, P0153 A/F SENSOR 1PFP:22693
Component DescriptionNBS004L1
The air fu

DTC P0133, P0153 A/F SENSOR 1 EC-929
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DTC P0133, P0153 A/F SENSOR 1PFP:22693
Component DescriptionNBS004L1
The air fuel ratio (A/F) sensor 1 is a planar dual-cell limit current sen-
sor. The sensor element of the A/F sensor 1 is the combination of a
Nernst concentration cell (sensor cell) with an oxygen-pump cell,
which transports ions. It has a heater in the element.
The sensor is capable of precise measurement = 1, but also in the
lean and rich range. Together with its control electronics, the sensor
outputs a clear, continuous signal throughout a wide range (0.7 < < air).
The exhaust gas components diffuse through the diffusion gap at the
electrode of the oxygen pump and Nernst concentration cell, where
they are brought to thermodynamic balance.
An electronic circuit controls the pump current through the oxygen-
pump cell so that the composition of the exhaust gas in the diffusion
gap remains constant at = 1. Therefore, the A/F sensor 1 is able to
indicate air/fuel ratio by this pumping of current. In addition, a heater
is integrated in the sensor to ensure the required operating tempera-
ture of 700 - 800 °C (1,292 - 1,472 °F).
CONSULT-II Reference Value in Data Monitor ModeNBS004L2
Specification data are reference values.
On Board Diagnosis LogicNBS004L3
To judge the malfunction of A/F sensor 1, this diagnosis measures response time of the A/F signal computed
by ECM from the A/F sensor 1 signal. The time is compensated by engine operating (speed and load), fuel
feedback control constant, and the A/F sensor 1 temperature index. Judgment is based on whether the com-
pensated time (the A/F signal cycling time index) is inordinately long or not.
SEF579Z
SEF580Z
MONITOR ITEM CONDITION SPECIFICATION
A/F SEN1 (B1)
A/F SEN1 (B2)
Engine: After warming up Maintaining engine speed at 2,000 rpm Fluctuates around 1.5 V
DTC No. Trouble diagnosis name DTC detecting condition Possible Cause
P0133
0133
(Bank 1)
Air fuel ratio (A/F) sensor 1
circuit slow response The response of the A/F signal computed by
ECM from A/F sensor 1 signal takes more than
the specified time.
Harness or connectors
(The A/F sensor 1 circuit is open or
shorted.)
A/F sensor 1
A/F sensor 1 heater
Fuel pressure
Fuel injector
Intake air leaks
Exhaust gas leaks
PCV
Mass air flow sensor
P0153
0153
(Bank 2)

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INFINITI FX35 2007 Service Manual EC-930
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DTC P0133, P0153 A/F SENSOR 1
Revision: 2006 July 2007 FX35/FX45
DTC Confirmation ProcedureNBS004L4
NOTE:
If DTC Confirmation Procedure has been previously conducted, always turn igni

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INFINITI FX35 2007 Service Manual DTC P0133, P0153 A/F SENSOR 1 EC-931
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Revision: 2006 July 2007 FX35/FX45
WITH GST
1. Start engine and warm it up to normal operating temperature.
2. S

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INFINITI FX35 2007 Service Manual EC-932
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DTC P0133, P0153 A/F SENSOR 1
Revision: 2006 July 2007 FX35/FX45
Wiring DiagramNBS004L5
BANK 1
TBWM1373E

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INFINITI FX35 2007 Service Manual DTC P0133, P0153 A/F SENSOR 1 EC-933
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Revision: 2006 July 2007 FX35/FX45
Specification data are reference values and are measured between each terminal

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INFINITI FX35 2007 Service Manual EC-934
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DTC P0133, P0153 A/F SENSOR 1
Revision: 2006 July 2007 FX35/FX45
BANK 2
TBWM1374E

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INFINITI FX35 2007 Service Manual DTC P0133, P0153 A/F SENSOR 1 EC-935
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Revision: 2006 July 2007 FX35/FX45
Specification data are reference values and are measured between each terminal

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INFINITI FX35 2007 Service Manual EC-936
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DTC P0133, P0153 A/F SENSOR 1
Revision: 2006 July 2007 FX35/FX45
2. RETIGHTEN AIR FUEL RATIO (A/F) SENSOR 1
1. Loosen and retighten the air fuel ratio (A/F) sensor 1.
>> GO TO 3.
3.

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