2009 NISSAN LATIO Service Repair Manual

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Page 1769 of 4331

NISSAN LATIO 2009 Service Repair Manual EC
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Wiring Diagram
INFOID:0000000004780704
Diagnosis Procedure INFOID:0000000004780335Ground Inspection " .
Is the inspection result normal?

Page 1770 of 4331

NISSAN LATIO 2009 Service Repair Manual EC-414< COMPONENT DIAGNOSIS >
[HR16DE]
P2138 APP SENSOR
YES >> GO TO 2.
NO >> Repair or replace ground connection. 2.
CHECK APP SENSOR 1 POWER SUPPLY CIRCUIT
1. Disconnect accelerator pedal position (

Page 1771 of 4331

NISSAN LATIO 2009 Service Repair Manual EC
NP
O Component Inspection " .)
• EVAP control system pressure sensor (Refer to EC-314, " Component Inspection " .)
• Refrigerant pressure sensor (Refer to EC-458, " Diagnosis Procedure " .)
I

Page 1772 of 4331

NISSAN LATIO 2009 Service Repair Manual EC-416< COMPONENT DIAGNOSIS >
[HR16DE]
P2138 APP SENSOR
Component Inspection INFOID:00000000047803361.
CHECK ACCELERATOR PEDAL POSITION SENSOR
1. Reconnect all harness connectors disconnected.
2. Turn

Page 1773 of 4331

NISSAN LATIO 2009 Service Repair Manual P2A00 A/F SENSOR 1
EC-417
< COMPONENT DIAGNOSIS >
[HR16DE] C
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P2A00 A/F SENSOR 1
Description INFOID:0000000004780338
The air fuel ratio (A/F) sensor 1 is a planar one-cell

P2A00 A/F SENSOR 1
EC-417
< COMPONENT DIAGNOSIS >
[HR16DE] C
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P2A00 A/F SENSOR 1
Description INFOID:0000000004780338
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 m easurement = 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).
DTC Logic INFOID:0000000004780339
DTC DETECTION LOGIC 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 1.
PRECONDITIONING
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 11 V at idle.
>> GO TO 2. 2.
PERFORM DTC CONFIRMATION PROCEDURE
1. Clear the mixture ratio self-learning value. Refer to EC-33, " MIXTURE RATIO SELF-LEARNING VALUE
CLEAR : Special Repair Requirement " .
2. Turn ignition switch OFF and wait at least 10 seconds.
3. Start engine and keep the engine speed between 3,500 and 4,000 rpm for 1 minute under no load.
4. Let engine idle for 1 minute.
5. Keep engine speed between 2,500 and 3,000 rpm for 20 minutes. JMBIA0112GB
PBIB3354E
DTC No. Trouble diagnosis name DTC detecting condition Possible Cause
P2A00 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. • A/F sensor 1
• A/F sensor 1 heater
• Fuel pressure
• Fuel injector
• Intake air leaks

Page 1774 of 4331

NISSAN LATIO 2009 Service Repair Manual EC-418< COMPONENT DIAGNOSIS >
[HR16DE]
P2A00 A/F SENSOR 1
6. Check 1st trip DTC.
Is 1st trip DTC detected? YES >> Go to
EC-419, " Diagnosis Procedure " .
NO >> INSPECTION END
Wiring Diagram INFOID:00

Page 1775 of 4331

NISSAN LATIO 2009 Service Repair Manual P2A00 A/F SENSOR 1
EC-419
< COMPONENT DIAGNOSIS >
[HR16DE] C
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Diagnosis Procedure
INFOID:00000000047803401.
CHECK GROUND CONNECTION
1. Turn ignition switch OFF.
2. Check g

Page 1776 of 4331

NISSAN LATIO 2009 Service Repair Manual YES >> GO TO 9.
NO >> Repair open circuit or short to ground or short to power in harness or connectors. Component Inspection " .
Is the inspection result normal? YES >> GO TO 10.
NO >> GO TO 11. Diag

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