2006 INFINITI FX35 Service Manual

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Page 2297 of 4462

INFINITI FX35 2006 Service Manual DTC P0131, P0151 A/F SENSOR 1 EC-913
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Revision: 2006 December 2006 FX35/FX45
Specification data are reference values and are measured between each termin

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INFINITI FX35 2006 Service Manual EC-914
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DTC P0131, P0151 A/F SENSOR 1
Revision: 2006 December 2006 FX35/FX45
BANK 2
TBWM1374E

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INFINITI FX35 2006 Service Manual DTC P0131, P0151 A/F SENSOR 1 EC-915
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Specification data are reference values and are measured between each termin

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INFINITI FX35 2006 Service Manual EC-916
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DTC P0131, P0151 A/F SENSOR 1
Revision: 2006 December 2006 FX35/FX45
2. CHECK AIR FUEL RATIO (A/F) SENSOR 1 POWER SUPPLY CIRCUIT
1. Disconnect air fuel ratio (A/F) sensor 1 harness co

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INFINITI FX35 2006 Service Manual DTC P0131, P0151 A/F SENSOR 1 EC-917
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4. CHECK A/F SENSOR 1 INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Turn ignit

Page 2302 of 4462

INFINITI FX35 2006 Service Manual EC-918
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DTC P0131, P0151 A/F SENSOR 1
Revision: 2006 December 2006 FX35/FX45
Removal and InstallationNBS004KT
AIR FUEL RATIO (A/F) SENSOR 1
Refer to EM-183, "EXHAUST MANIFOLD AND THREE WAY CA

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INFINITI FX35 2006 Service Manual DTC P0132, P0152 A/F SENSOR 1 EC-919
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DTC P0132, P0152 A/F SENSOR 1PFP:22693
Component DescriptionNBS004KU
The air

DTC P0132, P0152 A/F SENSOR 1 EC-919
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Revision: 2006 December 2006 FX35/FX45
DTC P0132, P0152 A/F SENSOR 1PFP:22693
Component DescriptionNBS004KU
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 ModeNBS004KV
Specification data are reference values.
On Board Diagnosis LogicNBS004KW
To judge the malfunction, the diagnosis checks that the A/F signal computed by ECM from the A/F sensor 1
signal is not inordinately high.
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
P0132
0132
(Bank 1) Air fuel ratio (A/F) sensor 1
circuit high voltage The A/F signal computed by ECM from the A/F
sensor 1 signal is constantly approx. 5V.
Harness or connectors
(The A/F sensor 1 circuit is open or
shorted.)
A/F sensor 1
P0152
0152
(Bank 2)

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INFINITI FX35 2006 Service Manual EC-920
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DTC P0132, P0152 A/F SENSOR 1
Revision: 2006 December 2006 FX35/FX45
DTC Confirmation ProcedureNBS004KX
NOTE:
If DTC Confirmation Procedure has been previously conducted, always turn

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