2011 NISSAN LATIO wiring

EC-766
< SERVICE INFORMATION >[MR18DE]
DTC P0172 FUEL INJECTION SYSTEM FUNCTION
Wiring Diagram
INFOID:0000000006341921
Specification data are reference values and are measured between each terminal and ground.
Pulse signal is measured by CONSULT-III.
CAUTION:
AABWA0321GB
Revision: May 2010 2011 Versa

EC-768
< SERVICE INFORMATION >[MR18DE]
DTC P0172 FUEL INJECTION SYSTEM FUNCTION
Listen for an intake air leak after the mass air flow sensor.
OK or NG
OK >> GO TO 3.
NG >> Repair or replace.
3.CHECK AIR FUEL RATIO (A/F) SENS
OR 1 CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch OFF.
2. Disconnect air fuel ratio (A/F) sensor 1 harness connector (1).
- Air fuel ratio (A/F) sensor 1 (2)
3. Disconnect ECM harness connector.
4. Check harness continuity between the following terminals. Refer to Wiring Diagram.
5. Check harness continuity between ECM terminals 49, 53 or A/F sensor 1 terminals 1, 2 and ground. Refer to Wiring Diagram.
6. Also check harness for short to power.
OK or NG
OK >> GO TO 4.
NG >> Repair open circuit or short to ground or short to power in harness or connectors.
4.CHECK FUEL PRESSURE
1. Release fuel pressure to zero. Refer to EC-582, "
Fuel Pressure Check".
2. Install fuel pressure gauge and check fuel pressure. Refer to EC-582, "
Fuel Pressure Check".
OK or NG
OK >> GO TO 6.
NG >> GO TO 5.
5.DETECT MALFUNCTIONING PART
Check the following.
• Fuel pump and circuit (Refer to EC-1014
.)
• Fuel pressure regulator (Refer to EC-582, "
Fuel Pressure Check".)
>> Repair or replace.
6.CHECK MASS AIR FLOW SENSOR
With CONSULT-III
1. Install all removed parts.
2. Start engine and warm it up to normal operating temperature.
3. Check “MASS AIR FLOW” in “DATA MONITOR” mode with CONSULT-III.
With GST
1. Install all removed parts.
2. Start engine and warm it up to normal operating temperature.
3. Check mass air flow sensor signal in Service $01 with GST.
A/F sensor 1 terminal ECM terminal
14 9
25 3
Continuity should exist.
Continuity should not exist.
BBIA0699E
At idling: Approximately 350 kPa (3.57 kg/cm2, 51 psi)
At idling : 1.0 - 4.0 g·m/sec
At 2,500 rpm : 2.0 - 10.0 g·m/sec
Revision: May 2010 2011 Versa

DTC P0181 FTT SENSOREC-771
< SERVICE INFORMATION > [MR18DE]
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Follow the procedure “WITH CONSULT-III” above.
Wiring DiagramINFOID:0000000006341926
Diagnosis ProcedureINFOID:0000000006341927
1.CHECK GROUND CONNECTIONS
1. Turn ignition switch OFF.
BBWA2636E
Revision: May 2010 2011 Versa

DTC P0181 FTT SENSOREC-773
< SERVICE INFORMATION > [MR18DE]
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2. Disconnect combination meter harness connector.
3. Check harness continuity between “fuel level sensor unit and fuel pump” terminal 5 and combination
meter terminal 24. Refer to Wiring Diagram.
4. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 6.
NG >> GO TO 5.
5.DETECT MALFUNCTIONING PART
Check the following.
• Harness connectors B102, M13
• Harness for open or short between “fuel level sensor unit and fuel pump” and ground.
>> Repair open circuit or short to ground or short to power in harness or connectors.
6.CHECK FUEL TANK TEMPERATURE SENSOR
Refer to, EC-773, "
Component Inspection".
OK or NG
OK >> GO TO 7.
NG >> Replace “fuel level sensor unit and fuel pump”.
7.CHECK INTERMITTENT INCIDENT
Perform EC-632
.
>> INSPECTION END
Component InspectionINFOID:0000000006341928
FUEL TANK TEMPERATURE SENSOR
1. Check resistance between “fuel level sensor unit and fuel pump”
terminal 4 and 5 by heating with hot water as shown in the fig-
ure.
2. If NG, replace “fuel level sensor unit and fuel pump”.
Removal and InstallationINFOID:0000000006341929
FUEL TANK TEMPERATURE SENSOR
Refer to FL-6, "Removal and Installation".
Continuity should exist.
Temperature [
°C ( °F)] Resistance (k Ω)
20 (68) 2.3 - 2.7
50 (122) 0.79 - 0.90
PBIB0931E
Revision: May 2010 2011 Versa

DTC P0182, P0183 FTT SENSOREC-775
< SERVICE INFORMATION > [MR18DE]
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Wiring DiagramINFOID:0000000006341933
Diagnosis ProcedureINFOID:0000000006341934
1.CHECK GROUND CONNECTIONS
1. Turn ignition switch OFF.
2. Loosen and retighten ground screw on the body. Refer to EC-638, "
Ground Inspection".
BBWA2636E
Revision: May 2010 2011 Versa

DTC P0182, P0183 FTT SENSOREC-777
< SERVICE INFORMATION > [MR18DE]
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3. Check harness continuity between “fuel level sensor unit and fuel pump” terminal 5 and combination
meter terminal 24. Refer to Wiring Diagram.
4. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 6.
NG >> GO TO 5.
5.DETECT MALFUNCTIONING PART
Check the following.
• Harness connectors B102, M13
• Harness for open or short between “fuel level sensor unit and fuel pump” and ground.
>> Repair open circuit or short to ground or short to power in harness or connectors.
6.CHECK FUEL TANK TEMPERATURE SENSOR
Refer to, EC-777, "
Component Inspection".
OK or NG
OK >> GO TO 7.
NG >> Replace “fuel level sensor unit and fuel pump”.
7.CHECK INTERMITTENT INCIDENT
Perform EC-632
.
>> INSPECTION END
Component InspectionINFOID:0000000006341935
FUEL TANK TEMPERATURE SENSOR
1. Check resistance between “fuel level sensor unit and fuel pump”
terminal 4 and 5 by heating with hot water as shown in the fig-
ure.
2. If NG, replace “fuel level sensor unit and fuel pump”.
Removal and InstallationINFOID:0000000006341936
FUEL TANK TEMPERATURE SENSOR
Refer to FL-6, "Removal and Installation".
Continuity should exist.
Temperature [
°C ( °F)] Resistance (k Ω)
20 (68) 2.3 - 2.7
50 (122) 0.79 - 0.90
PBIB0931E
Revision: May 2010 2011 Versa

DTC P0222, P0223 TP SENSOR
EC-779
< SERVICE INFORMATION > [MR18DE]
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2. Check DTC.
3. If DTC is detected, go to EC-780, "
Diagnosis Procedure".
Wiring DiagramINFOID:0000000006341941
Specification data are reference values and are measured between each terminal and ground.
CAUTION:
BBWA2655E
Revision: May 2010
2011 Versa

DTC P0222, P0223 TP SENSOR
EC-781
< SERVICE INFORMATION > [MR18DE]
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1. Disconnect electric throttle c
ontrol actuator (1) harness connec-
tor.
- : Vehicle front
2. Turn ignition switch ON.
3. Check voltage between electric throttle control actuator terminal 2 and ground with CONSULT-III or tester.
OK or NG
OK >> GO TO 3.
NG >> Repair open circuit or short to ground or short to power in harness connectors.
3.CHECK THROTTLE POSITION SENSOR 1 GROUND CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Check harness continuity between ECM terminal 36 and electric throttle control actuator terminal 4.
Refer to Wiring Diagram.
4. Also check harness for short to ground or short to power.
OK or NG
OK >> GO TO 4.
NG >> Repair open circuit or short to ground or short to power in harness or connectors.
4.CHECK THROTTLE POSITION SENSOR 1 INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Check harness continuity between ECM terminal 33 and electric throttle control actuator terminal 1.
Refer to Wiring Diagram.
2. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 5.
NG >> Repair open circuit or short to ground or short to power in harness or connectors.
5.CHECK THROTTLE POSITION SENSOR
Refer to EC-782, "
Component Inspection".
OK or NG
OK >> GO TO 7.
NG >> GO TO 6.
6.REPLACE ELECTRIC THROTTLE CONTROL ACTUATOR
1. Replace the electric throttle control actuator.
2. Perform EC-580, "
Throttle Valve Closed Position Learning".
3. Perform EC-580, "
Idle Air Volume Learning".
PBIB3325E
Voltage: Approximately 5 V
PBIB3311E
Continuity should exist.
Continuity should exist.
Revision: May 2010 2011 Versa