2009 NISSAN LATIO Service Repair Manual

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Page 2321 of 4331

NISSAN LATIO 2009 Service Repair Manual DTC P2138 APP SENSOR
EC-965
< SERVICE INFOMATION >
[MR TYPE 1] C
D E
F
G H
I
J
K L
M A EC
NP
O
>>
INSPECTION END 11.
CHECK INTERMITTENT INCIDENT
Refer to EC-626 .
>> INSPECTION END
Component Inspecti

Page 2322 of 4331

NISSAN LATIO 2009 Service Repair Manual EC-966< SERVICE INFOMATION >
[MR TYPE 1]
DTC P2A00 A/F SENSOR 1
DTC P2A00 A/F SENSOR 1
Component Description INFOID:0000000004537505
The air fuel ratio (A/F) sensor 1 is a planar one-cell limit curren

EC-966< SERVICE INFOMATION >
[MR TYPE 1]
DTC P2A00 A/F SENSOR 1
DTC P2A00 A/F SENSOR 1
Component Description INFOID:0000000004537505
The air fuel ratio (A/F) sensor 1 is a planar one-cell limit current sen-
sor. The sensor element of the A/F sensor 1 is composed an elec-
trode layer, 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.
The exhaust gas components diffuse through the diffusion layer at
the sensor cell. An electrode layer is applied voltage, and this current
relative oxygen density in lean. Also this current relative hydrocar-
bon density in rich.
Therefore, the A/F sensor 1 is able to indicate air fuel ratio by this
electrode layer of current. In addition, a heater is integrated in the
sensor to ensure the required operating temperature of about 800 °C
(1,472 °F).
CONSULT-III Reference Value in Data Monitor Mode INFOID:0000000004537506
Specification data are reference values.
On Board Diagn osis Logic INFOID:0000000004537507
To judge the malfunction, the A/F signal computed by ECM from the A/F sensor 1 signal is monitored not to be
shifted to LEAN side or RICH side.
DTC Confirmation Procedure INFOID:0000000004537508
NOTE:
If DTC Confirmation Procedure has been previously conduc ted, always turn ignition switch OFF and wait at
least 10 seconds before conducting the next test.
TESTING CONDITION:
Before performing the following procedure, confirm that battery voltage is more than 11V at idle.
WITH CONSULT-III
1. Start engine and warm it up to normal operating temperature.
2. Turn ignition switch OFF and wait at least 10 seconds. PBIB3353E
PBIB3354E
MONITOR ITEM CONDITION SPECIFICATION
A/F SEN1 (B1) • Engine: After warming up Maintaining engine speed at
2,000 rpm Fluctuates around 2.2VDTC No. Trouble diagnosis name DTC detecting condition Possible Cause
P2A00
2A00 Air fuel ratio (A/F) sensor 1
circuit range/performance • The output voltage computed by ECM from the
A/F sensor 1 signal is shifted to the lean side for
a specified period.
• The A/F signal computed by ECM from the A/F
sensor 1 signal is shifted to the rich side for a
specified period. • Air fuel ratio (A/F) sensor 1
• Air fuel ratio (A/F) sensor 1 heater
• Fuel pressure
• Fuel injector
• Intake air leaks

Page 2323 of 4331

NISSAN LATIO 2009 Service Repair Manual DTC P2A00 A/F SENSOR 1
EC-967
< SERVICE INFOMATION >
[MR TYPE 1] C
D E
F
G H
I
J
K L
M A EC
NP
O
3. Turn ignition switch ON and select “SELF-LE
ARNING CONT” in “WORK SUPPORT” mode

Page 2324 of 4331

NISSAN LATIO 2009 Service Repair Manual EC-968< SERVICE INFOMATION >
[MR TYPE 1]
DTC P2A00 A/F SENSOR 1
Wiring Diagram INFOID:0000000004560765
Specification data are reference values and are measured between each terminal and ground.
Pulse

Page 2325 of 4331

NISSAN LATIO 2009 Service Repair Manual DTC P2A00 A/F SENSOR 1
EC-969
< SERVICE INFOMATION >
[MR TYPE 1] C
D E
F
G H
I
J
K L
M A EC
NP
O
Do not use ECM ground terminals wh
en measuring input/output voltage. Doing so may result in dam-
age t

Page 2326 of 4331

NISSAN LATIO 2009 Service Repair Manual EC-970< SERVICE INFOMATION >
[MR TYPE 1]
DTC P2A00 A/F SENSOR 1 4.
CLEAR THE SELF-LEARNING DATA
With CONSULT-III
1. Start engine and warm it up to normal operating temperature.
2. Select “SELF-LEA

Page 2327 of 4331

NISSAN LATIO 2009 Service Repair Manual EC
NP
O
• Harness for open or short between A/F sensor 1 and fuse
>> Repair or replace harness or connectors. OK >> GO TO 9.
NG >> Repair open circuit or short to ground or short to power in harness

Page 2328 of 4331

NISSAN LATIO 2009 Service Repair Manual EC-972< SERVICE INFOMATION >
[MR TYPE 1]
DTC P2A00 A/F SENSOR 1
1. Start engine and warm it up to normal operating temperature.
2. Select “SELF-LEARNING CONT” in “WORK SUPPORT” mode with CONS

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