2009 NISSAN TIIDA O2 SENSOR

P2A00 A/F SENSOR 1
EC-417
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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

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:0000000004780722 AABWA0307G B

P2A00 A/F SENSOR 1
EC-419
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Diagnosis Procedure
INFOID:00000000047803401.
CHECK GROUND CONNECTION
1. Turn ignition switch OFF.
2. Check ground connections E15, E24. Refer to EC-125, " Ground Inspection " .
Is the inspection result normal? YES >> GO TO 2.
NO >> Repair or replace ground connection. 2.
CHECK HARNESS CONNECTOR
1. Disconnect A/F sensor 1 harness connector.
2. Check harness connector for water.
Is the inspection result normal? YES >> GO TO 3.
NO >> Repair or replace harness connector. 3.
RETIGHTEN A/F SENSOR 1
1. Loosen and retighten the A/F sensor 1. Refer to EM-31, " Exploded View " .
>> GO TO 4. 4.
CHECK FOR INTAKE AIR LEAK
1. Reconnect A/F sensor 1 harness connector.
2. Start engine and run it at idle.
3. Listen for an intake air leak after the mass air flow sensor.
Is intake air leak detected? YES >> GO TO 5.
NO >> Repair or replace. 5.
CLEAR THE MIXTURE RATIO SELF-LEARNING VALUE
1. Clear the mixture ratio self-learning value. Refer to EC-33, " MIXTURE RATIO SELF-LEARNING VALUE
CLEAR : Special Repair Requirement " .
2. Run engine for at least 10 minutes at idle speed.
Is the 1st trip DTC P0171 or P0172 detected? Is it difficult to start engine? YES >> Perform trouble diagnosis for DTC P0171or P0172. Refer to
EC-229, " DTC Logic " or
EC-235, " DTC Logic " .
NO >> GO TO 6. 6.
CHECK A/F SENSOR 1 POWER SUPPLY CIRCUIT
1. Disconnect A/F sensor 1 harness connector.
2. Turn ignition switch ON.
3. Check the voltage between A/F sensor 1 harness connector and
ground.
Is the inspection result normal? YES >> GO TO 8.
NO >> GO TO 7. 7.
DETECT MALFUNCTIONING PART
Check the following. Water should not exit.
A/F sensor 1 Ground Voltage
Connector Terminal
F12 4 Ground Battery voltage PBIB3308E

YES >> INSPECTION END
NO >> EC-435, " Diagnosis Procedure " .
Sensor Input signal to ECM ECM function Actuator
Crankshaft position sensor (POS)
Camshaft position sensor (PHASE) Engine speed*
Fuel pump controlFuel pump relay
↓
Fuel pump
Battery Battery voltage*
Condition Fuel pump operation
Ignition switch is turned to ON. Operates for 1 second.
Engine running and cranking Operates.
When engine is stopped Stops in 1.5 seconds.
Except as shown above Stops.

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NO >> Replace15 A fuse.
YES >> GO TO 10.
NO >> GO TO 7. YES >> GO TO 9.
NO >> Repair open circuit or short to power in harness or connectors. Component Inspection " .
Is the inspection result normal? YES >> GO TO 10.
NO >> Replace “fuel level sensor unit and fuel pump”. Diagnosis Procedure " .
Is the inspection result normal? YES >> Replace IPDM E/R.
NO >> Repair or replace harness or connectors.
Component Inspection INFOID:0000000004780364Fuel level sensor unit
and fuel pump Ground Continuity
Connector Terminal
B100 3 Ground Existed

YES >> INSPECTION END
NO >> Replace “fuel level sensor unit and fuel pump”. Terminals Resistance
1 and 3 0.2 - 5.0 Ω [at 25 °C (77 °F)]

ON BOARD REFUELING VAPOR RECOVERY (ORVR)
EC-451
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B: Cannot refuel/Fuel odor from the fuel
filler opening is strong while refueling.
Which symptom is present? A >> GO TO 2.
B >> GO TO 8. 2.
CHECK EVAP CANISTER
1. Remove EVAP canister with EVAP canister vent c ontrol valve and EVAP control system pressure sensor
attached.
2. Weigh the EVAP canister with EVAP canister vent control valve and EVAP control system pressure sensor
attached.
The weight should be l ess than 1.9 kg (4.2 lb).
Is the inspection result normal? YES >> GO TO 3.
NO >> GO TO 4. 3.
CHECK IF EVAP CANISTER IS SATURATED WITH WATER
Check if water will drain from EVAP canister.
Does water drain from the EVAP canister?YES >> GO TO 4.
NO >> GO TO 7. 4.
REPLACE EVAP CANISTER
Replace EVAP canister with a new one.
>> GO TO 5. 5.
CHECK DRAIN FILTER
Refer to EC-455, " Component Inspection (Drain filter) " .
Is the inspection result normal? OK >> GO TO 6.
NO >> Replace drain filter. 6.
DETECT MALFUNCTIONING PART
Check the EVAP hose between EVAP canister and vehicle frame for clogging or poor connection.
>> Repair or replace EVAP hose. 7.
CHECK REFUELING EVAP VAPOR CUT VALVE
Refer to EC-453, " Component Inspection (Refueling EVAP vapor cut valve) " .
Is the inspection result normal? YES >> INSPECTION END
NO >> Replace refueling EVAP vapor cut valve with fuel tank. 8.
CHECK EVAP CANISTER
1. Remove EVAP canister with EVAP canister vent c ontrol valve and EVAP control system pressure sensor
attached.
2. Weigh the EVAP canister with EVAP canister vent control valve and EVAP control system pressure sensor
attached.
The weight should be l ess than 1.9 kg (4.2 lb).
Is the inspection result normal? PBIB1213E

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REFRIGERANT PRESSURE SENSOR
Description INFOID:0000000004780380
The refrigerant pressure sensor is installed at the c ondenser of the air conditioner system. The sensor uses an
electrostatic volume pressure transducer to convert re frigerant pressure to voltage. The voltage signal is sent
to ECM, and ECM controls cooling fan system.
Component Function Check INFOID:0000000004780381YES >> INSPECTION END
NO >> Go to EC-458, " Diagnosis Procedure " .