ON A 2009 F150 4.6 3V --NEED TO KNOW WHAT COLOR WIRES ON THE MASS AIR FLOW PLUG RUN THE IAT SENSOR??

You need the intake air temperature sensor, these commonly wire into the mass air flow sensor. Is it an aftermarket unit with performance in mind? If not, please explain briefly and I'll be able to give a more definitive answer!

Hi Chris.

p0304 = Number 4 Cylinder Misfire Detected

Faulty spark plug 4
Clogged or faulty fuel injector 4
Faulty ignition coil 4
Fuel injector 4 harness is open or shorted
Fuel injector 4 circuit poor electrical connection
Ignition coil 4 harness is open or shorted
Ignition coil 4 circuit poor electrical connection
Insufficient cylinder 4 compression
Incorrect fuel pressure
Intake air leak

The P0304 code means that the cylinder 4 is misfiring or is randomly misfiring. Start by checking for intake leaks an if no leaks are found the next step is to replace the spark plugs on cylinder 4.


p0102 = Mass or Volume Air Flow Circuit Low Input

Faulty mass air flow sensor
Intake air leaks
Dirty mass air flow sensor
Dirty mass air filter
Mass air flow sensor harness is open or shorted
Mass air flow sensor circuit poor electrical connection

Before replacing the mass air flow sensor, try replacing the air filter and cleaning the air flow sensor with low compress air or mass air flow sensor cleaner.
Reset code and drive vehicle.
If the code comes back, it may be necessary to replaced the mass air flow sensor.


p0154 = O2 Sensor Circuit No Activity Detected Sensor 1 Bank 2

Faulty Front Heated Oxygen Sensor Bank 2
Front Heated Oxygen Sensor Bank 2 harness is open or shorted
Front Heated Oxygen Sensor Bank 2 circuit poor electrical connection
Inappropriate fuel pressure
Faulty fuel injectors
Intake air leaks may be faulty
Exhaust gas leaks

Replacing the Front Heated Oxygen Sensor Bank 2 usually takes care of the problem.


p0113 = Intake Air Temperature Sensor Circuit High

Faulty Intake Air Temperature (IAT) sensor
Dirty air filter
Intake Air Temperature (IAT) sensor harness is open or shorted
Intake Air Temperature (IAT) sensor circuit poor electrical connection

The Intake Air Temperature (IAT) sensor is built into mass air flow sensor or in some vehicles mounted to the air filter duct housing. The sensor detects intake air temperature and transmits a signal to the Engine Control Module (ECM).The temperature sensing unit uses a thermistor which is sensitive to the change in temperature. Electrical resistance of the thermistor decreases in response to the temperature rise. The Intake Air Temperature signal is used as an input for various systems in the vehicle.



Hope this helps
FYT

http://www.autocodes.com/make/nissan

None of those , those are just the mass air flow sensor . If it had IAT sensor too , it would have 6 wires not four . intake air temp. sensor has gray wire and a gray with red stripe wire .

IAT, is the air temp.
this sensor varies by what engine you car has. (and country)

you could just log i to alldata.com and look, its all there.
3.5 L V6 this engine? is common in USA>
out side USA is this
It is equipped with a 2.4 L engine and CVT
vast diffr. engines... no body ever post engine or country so i must as
the questions.
why are you worried, about IAT, just a clue, helps.
the scan tool said its bad?
ok , i logged in for you, looked up this sensor
and this 3.5L has a MAF, Air flow meter near air cleaner.
and guess what , the IAT is inside the MAF !!
why not post the why so we can help,
post symptoms. or, scan codes, or? really

could be in the air cleaner box ,should be before the maf sensor

Hi there:
This code is set when the MAF (Mass Air Flow) meter is not sending the PCM the correct information. This can be due to a bad conection of the rubber intake hose between the MAF and the Throttle plate opening, a dirty air filter, a dirty mass air flow or a bad mass air flow.



Most programmer have you tie into the iat sensor in the mass air flow. this can cause the the iat sensor oto short out.


Hope helps.

Color wires? The IAT sensor is part of the mass air flow sensor. The wires in the MAF harness that go to the IAT sensor are: Brown is ground, Red/Purple is the 5v reference, and Green/Yellow comes from the IAT into the Atmospheric Pressure Sensor and out to the computer.

Hope this helps. Good luck!

sorry i do not know the colours off the top of my head, but the IAT it the small 2 wire sensor about halfway up the air duct, and the MAF is the large multi wire connector close to the air filter box. good luck!

Pink Black and white.black is power white is ground sometimes it has a green stripe and black is reference voltage.

The intake air temp sensor is the one that is not the mass air flow. It should be a little 2 wire sensor in the inlet tube. The mass air flow is near the air cleaner, and is inline with the air inlet tube.