2007 INFINITI M35 Factory Service Manual

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Page 2497 of 4647

INFINITI M35 2007 Factory Service Manual EC-968
[VK45DE]
DTC P0132, P0152 A/F SENSOR 1
Revision: 2007 April2007 M35/M45
Wiring DiagramNBS005E8
BANK 1
TBWT1046E

Page 2498 of 4647

INFINITI M35 2007 Factory Service Manual DTC P0132, P0152 A/F SENSOR 1
EC-969
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EC
Revision: 2007 April2007 M35/M45
Specification data are reference values and are measured between each terminal and ground.
Puls

Page 2499 of 4647

INFINITI M35 2007 Factory Service Manual EC-970
[VK45DE]
DTC P0132, P0152 A/F SENSOR 1
Revision: 2007 April2007 M35/M45
BANK 2
TBWT1047E

Page 2500 of 4647

INFINITI M35 2007 Factory Service Manual DTC P0132, P0152 A/F SENSOR 1
EC-971
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Revision: 2007 April2007 M35/M45
Specification data are reference values and are measured between each terminal and ground.
Puls

Page 2501 of 4647

INFINITI M35 2007 Factory Service Manual EC-972
[VK45DE]
DTC P0132, P0152 A/F SENSOR 1
Revision: 2007 April2007 M35/M45
2. CHECK AIR FUEL RATIO (A/F) SENSOR 1 POWER SUPPLY CIRCUIT
1. Disconnect air fuel ratio (A/F) sensor 1 harness connector

Page 2502 of 4647

INFINITI M35 2007 Factory Service Manual DTC P0132, P0152 A/F SENSOR 1
EC-973
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Revision: 2007 April2007 M35/M45
4. CHECK A/F SENSOR 1 INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch OFF.
2. D

Page 2503 of 4647

INFINITI M35 2007 Factory Service Manual EC-974
[VK45DE]
DTC P0132, P0152 A/F SENSOR 1
Revision: 2007 April2007 M35/M45
Removal and InstallationNBS005EA
AIR FUEL RATIO (A/F) SENSOR 1
Refer to EM-183, "EXHAUST MANIFOLD AND THREE WAY CATALYST"

Page 2504 of 4647

INFINITI M35 2007 Factory Service Manual DTC P0133, P0153 A/F SENSOR 1
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Revision: 2007 April2007 M35/M45
DTC P0133, P0153 A/F SENSOR 1PFP:22693
Component DescriptionNBS005EB
The air fuel ratio (A/F) s

DTC P0133, P0153 A/F SENSOR 1
EC-975
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Revision: 2007 April2007 M35/M45
DTC P0133, P0153 A/F SENSOR 1PFP:22693
Component DescriptionNBS005EB
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 ModeNBS005EC
Specification data are reference values.
On Board Diagnosis LogicNBS005ED
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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