2009 NISSAN TIIDA O2 SENSOR

DTC P2A00 A/F SENSOR 1
EC-1491
< SERVICE INFOMATION >
[MR TYPE 2] C
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Do not use ECM ground terminals wh
en measuring input/output voltage. Doing so may result in dam-
age to the ECM's transistor. Use a ground ot her than ECM terminals, such as the ground.
: Average voltage for pulse signal (Actual pulse signal can be confirmed by oscilloscope.)
Diagnosis Procedure INFOID:00000000045003961.
CHECK GROUND CONNECTIONS
1. Turn ignition switch OFF.
2. Loosen and retighten ground screws on the body. Refer to EC-1144, " Ground Inspection " .
OK or NG OK >> GO TO 2.
NG >> Repair or replace ground connections. 2.
RETIGHTEN AIR FUEL RATIO (A/F) SENSOR 1
Loosen and retighten the air fuel rati o (A/F) sensor 1. Refer to EM-144, " Removal and Installation " .
>> GO TO 3. 3.
CHECK FOR INTAKE AIR LEAK
1. Start engine and run it at idle.
2. Listen for an intake air leak after the mass air flow sensor.
OK or NG OK >> GO TO 4.
NG >> Repair or replace. TERMI-
NAL
NO. WIRE
COLOR ITEM CONDITION DATA (DC Voltage)
3 G A/F sensor 1 heater [Engine is running]
• Warm-up condition
• Idle speed
(More than 140 seconds after starting
engine) Approximately 2.9 - 8.8V
49 W A/F sensor 1 [Engine is running]
• Warm-up condition
• Engine speed: 2,000 rpm Approximately 1.8V
Output voltage varies with air fuel
ratio.
53 B A/F sensor 1 [Ignition switch: ON]Approximately 2.2V PBIA8148J
:
Vehicle front
1. Body ground E24 2. Engine ground F9 3. Engine ground F16
4. Body ground E15 BBIA0698E

EC-1492< SERVICE INFOMATION >
[MR TYPE 2]
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-LEARNING CONT” in “WORK SUPPORT” mode with CONSULT-III.
3. Clear the self-learning control coefficient by touching “CLEAR”.
4. Run engine for at least 10 minutes at idle speed.
Is the 1st trip DTC P0171 and P0172 detected?
Is it difficult to start engine?
Without CONSULT-III
1. Start engine and warm it up to normal operating temperature.
2. Turn ignition switch OFF.
3. Disconnect mass air flow sensor (1) harness connector.
4. Restart engine and let it idle for at least 5 seconds.
5. Stop engine and reconnect mass air flow sensor harness con- nector.
6. Make sure DTC P0102 is displayed.
7. Erase the DTC memory. Refer to EC-1052, " Emission-related
Diagnostic Information " .
8. Make sure DTC P0000 is displayed.
9. Run engine for at least 10 minutes at idle speed. Is the 1st trip DTC P0171 and P0172 detected?
Is it difficult to start engine?
Yes or No Yes >> Perform trouble diagnosis for DTC P0171 or P0172. Refer to
EC-1258 or
EC-1264 .
No >> GO TO 5. 5.
CHECK HARNESS CONNECTOR
1. Turn ignition switch OFF.
2. Disconnect A/F sensor 1 harness connector (1).
- Air fuel ratio (A/F) sensor (2)
3. Check harness connector for water.
OK or NG OK >> GO TO 6.
NG >> Repair or replace harness connector. 6.
CHECK AIR FUEL RATIO (A/F) SENSOR 1 POWER SUPPLY CIRCUIT
1. Turn ignition switch ON.
2. Check voltage between A/F sensor 1 terminal 4 and ground with
CONSULT-III or tester.
OK or NG OK >> GO TO 8.
NG >> GO TO 7. 7.
DETECT MALFUNCTIONING PART
Check the following.
• Harness connectors E8, F8 BBIA0701E
Water should no exist.
BBIA0699E
Voltage: Battery voltage
PBIB3308E

EC
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• 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 or connectors. Component Inspection " .
OK or NG OK >> GO TO 10.
NG >> GO TO 11. .
OK or NG OK >> GO TO 11.
NG >> Repair or replace. OK >>
INSPECTION END
NG >> GO TO 13.

EC-1494< SERVICE INFOMATION >
[MR TYPE 2]
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 CONSULT-III.
3. Clear the self-learning control coefficient by touching “CLEAR”.
Without CONSULT-III
1. Start engine and warm it up to normal operating temperature.
2. Turn ignition switch OFF.
3. Disconnect mass air flow sensor harness (1) connector.
4. Restart engine and let it idle for at least 5 seconds.
5. Stop engine and reconnect mass air flow sensor harness con- nector.
6. Make sure DTC P0102 is displayed.
7. Erase the DTC memory. Refer to EC-1052, " Emission-related
Diagnostic Information " .
8. Make sure DTC P0000 is displayed.
>> GO TO 14. 14.
CONFIRM A/F ADJUSTMENT DATA
1. Turn ignition switch OFF and then ON.
2. Select “A/F ADJ-B1” in “DAT A MONITOR” mode with CONSULT-III.
3. Make sure that “0.000” is displayed on CONSULT-III screen.
>>INSPECTION END
Removal and Installation INFOID:0000000004501228
AIR FUEL RATIO SENSOR HEATER
Refer to EM-144, " Removal and Installation " . BBIA0701E

FUEL PUMP
EC-1513
< SERVICE INFOMATION >
[MR TYPE 2] C
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FUEL PUMP
Description INFOID:0000000004500415
SYSTEM DESCRIPTION
*: ECM determines the start signal status by the signals of engine speed and battery voltage.
The ECM activates the fuel pump for several seconds after the ignition switch is turned ON to improve engine
start ability. If the ECM receives a engine speed signal from the crankshaft position sensor (POS) and cam-
shaft position sensor (PHASE), it knows that the engi ne is rotating, and causes the pump to operate. If the
engine speed signal is not received when the ignition s witch is ON, the engine stalls. The ECM stops pump
operation and prevents battery discharging, thereby improving safety. The ECM does not directly drive the fuel
pump. It controls the ON/OFF fuel pump rela y, which in turn controls the fuel pump.
COMPONENT DESCRIPTION A turbine type design fuel pump is used in the fuel tank.
• Fuel level sensor unit and fuel pump (1)
• Fuel pressure regulator (2)
• Fuel level sensor (3)
• Fuel tank temperature sensor (4)
CONSULT-III Reference Val ue in Data Monitor Mode INFOID:0000000004500416
Specification data are reference values. Sensor Input Signal to ECM ECM Function Actuator
Crankshaft position sensor (POS)
Camshaft position sensor (PHASE) Engine speed*
Fuel pump control Fuel pump relay
Battery Battery voltage* Condition Fuel pump operation
Ignition switch is turned to ON Operates for 1 second
Engine running and cranking Operates
Engine: Stopped Stops in 1.5 seconds
Except as shown above Stops BBIA0704E
MONITOR ITEM CONDITION SPECIFICATION
FUEL PUMP RLY • For 1 second after turning ignition switch ON
• Engine running or cranking ON
• Except above conditions OFF

EC-1516< SERVICE INFOMATION >
[MR TYPE 2]
FUEL PUMP 4.
DETECT MALFUNCTIONING PART
Check the following.
• Harness connectors E8, F8
• Harness for open or short between IPDM E/R and ECM
>> Repair open circuit or short to ground or short to power in harness or connectors. 5.
CHECK FUEL PUMP POWER SUPPLY CIRCUIT-III
1. Turn ignition switch OFF.
2. Reconnect all harness connectors disconnected.
3. Disconnect “fuel level sensor unit and fuel pump” harness con- nector (1).
- Illustration shows the view with inspection hole cover removed.
4. Turn ignition switch ON.
5. Check voltage between “fuel level sensor unit and fuel pump” terminal 1 and ground with CONSULT-III or tester.
OK or NG OK >> GO TO 9.
NG >> GO TO 6. 6.
CHECK 15A FUSE
1. Turn ignition switch OFF.
2. Disconnect 15A fuse.
3. Check 15A fuse.
OK or NG OK >> GO TO 7.
NG >> Replace fuse. 7.
CHECK FUEL PUMP POWER SUPPLY CIRCUIT-IV
1. Disconnect IPDM E/R harness connector E45.
2. Check harness continuity between IPDM E/R terminal 36 and “fuel level sensor unit and fuel pump” termi-
nal 1. Refer to Wiring Diagram.
3. Also check harness for short to ground and short to power.
OK or NG OK >> GO TO 11.
NG >> GO TO 8. 8.
DETECT MALFUNCTIONING PART
Check the following.
• Harness connectors M69, E7
• Harness connectors M12, B101 BBIA0702E
Voltage: Battery voltage should exist for 1 second
after ignition switch is turned ON. PBIB0795E
Continuity should exist.

FUEL PUMP
EC-1517
< SERVICE INFOMATION >
[MR TYPE 2] C
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• Harness for open or short between IPDM E/R
and “fuel level sensor unit and fuel pump”
>> Repair open circuit or short to ground or short to power in harness or connectors. 9.
CHECK FUEL PUMP GROUND CIRCUIT
1. Check harness continuity between “fuel level sensor unit and fuel pump” terminal 3 and ground.
Refer to Wiring Diagram.
2. Also check harness for short to power.
OK or NG OK >> GO TO 10.
NG >> Repair or replace harness or connectors. 10.
CHECK FUEL PUMP
Refer to EC-1517, " Component Inspection " .
OK or NG OK >> GO TO 11.
NG >> Replace fuel pump. 11.
CHECK INTERMITTENT INCIDENT
Refer to EC-1138 .
OK or NG OK >> Replace IPDM E/R. Refer to
PG-27, " Removal and Installation of IPDM E/R " .
NG >> Repair or replace harness or connectors.
Component Inspection INFOID:0000000004500419
FUEL PUMP 1. Disconnect “fuel level sensor unit and fuel pump” harness connector.
2. Check resistance between “fuel level sensor unit and fuel pump” terminals 1 and 3.
3. If NG, replace “fuel level sensor unit and fuel pump”.
Removal and Installation INFOID:0000000004500420
FUEL PUMP Refer to FL-5 .
Continuity should exist.
Resistance: Approximately 0.2 - 5.0 Ω [at 25 °C (77 °F)] SEC918C

REFRIGERANT PRESSURE SENSOR
EC-1527
< SERVICE INFOMATION >
[MR TYPE 2] C
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REFRIGERANT PRESSURE SENSOR
Component Description INFOID:0000000004500426
The refrigerant pressure sensor (1) is installed at the condenser of
the air conditioner system. The sens or uses an electrostatic volume
pressure transducer to convert refrigerant pressure to voltage. The
voltage signal is sent to ECM, and ECM controls cooling fan system.
• : Vehicle front BBIA0713E
PBIB2657E