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Posted on Aug 26, 2009
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Want to know which wire is the signal wire for a MAF/IAT sensor on a 2002 Mustang gt 4.6 ltr

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  • Posted on Aug 26, 2009
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Both signals are at the far end of the plug iat is the gray wire maf is the gray with the red trace. let me know if this helps

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1answer

I have a 2008 Ford fusion and I need to know what wire go to the Iat sensor

Trying to "soup-up" your tiny little 4-banger by by-passing the IAT? My recommendations are DON'T DO IT! You are opening a can of worms that you may not be able to afford in the not-so-distant future.

However, who am I to tell you how to waste your money?

The IAT signal input to the PCM is Pin #1 VIOLET/GREY at the MAF/IAT sensor connector.
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1answer

I would like to know what the following codes represent for my 2002 jaguar x-type 3.0 Codes are P174, P175, P1111

P1110 Intake Air Temperature Sensor Signal (Dynamic Chamber) Circuit
The other DTC refer to mixture issues.

From http://www.bluejag.co.uk

Fault Code:- P0174 Indicates a Power-train fault
The fault is generally due to a problem in the Emission Management (Fuel or Air) area
Fault Description: Bank 2 combustion too lean
Action of ECM:- ECM Default: - Bank 2 catalyst warm-up ignition ****** inhibited - Bank 2 closed loop fuel metering inhibited - Canister purge inhibited - Maximum engine speed reduced
Possible Fault:-
Engine misfire Air intake leak between MAF Sensor and throttle Fuel filter / system restriction Fuel injector restriction Low fuel pump output HO2 Sensor(s) (2/1, 2/2) harness wiring condition fault Exhaust leak (before catalyst) ECM receiving incorrect signal from one or more of the following components: ECT Sensor, MAF Sensor, IAT Sensor, TP Sensor

once again from http://www.bluejag.co.uk

Fault Code:- P0175 Indicates a Power-train fault
The fault is generally due to a problem in the Emission Management (Fuel or Air) area
Fault Description: Bank 2 combustion too rich

Action of ECM:- ECM Default: - Bank 2 catalyst warm-up ignition ****** inhibited - Bank 2 closed loop fuel metering inhibited - Canister purge inhibited - Maximum engine speed reduced


After clearing the DTC, complete the Start engine and bring to normal operating temperature > 82 °C (180 °F) Idle for 10 minutes

Check for a reoccurrence of fault DTC.

Possible Fault:- Restricted air filter Leaking fuel injector(s) ECM receiving incorrect signal from one or more of the following components: ECT Sensor, MAF Sensor, IAT Sensor, TP Sensor

1helpful
3answers

Diagnostic codes

P0102 OBD-II Trouble Code - Mass Air Flow (MAF) Circuit Low Input

What does that mean?
Basically this means that there is a problem with the Mass Air Flow (MAF) sensor or circuit. A more technical description would be that the MAF circuit had lower than expected voltage (air flow). Other MAF sensor circuit DTC trouble codes are P0100, P0101, P0103, and P0104.

Symptoms
You will likely not notice any serious drivability problems, although there may be symptoms such as a general decrease in power or sluggishness.

Causes
A code P0102 may mean that one or more of the following has happened:
* The MAF may be disconnected, or a wiring connection may be bad
* The MAF may be dirty or otherwise contaminated (Note: if you use a reusable oiled air filter, be careful not to apply too much oil or that can contaminate the MAF).
* The MAF sensor may be faulty
* The vehicle computer may be faulty (very rare)

Possible Solutions
The simplest thing to do is to reset the code and see if it comes back. Then start with the cheapest, easiest repair procedures:
* Verify that the Mass Air Flow Sensor wiring is connected properly and that there are no broken / frayed wires.
* Inspect for any air leaks near the MAF sensor.
* Take the MAF out and clean it using a spray cleaner such as brake cleaner or electrical contact cleaner. Be gentle with the sensor.
* Check the voltage of the MAF sensor (refer to a repair manual for vehicle specific information)
* Replace the MAF sensor.


P0113 - Intake Air Temperature Circuit High Input

What does that mean?
The powertrain control module (PCM) monitors the temperature of the air entering the engine. The PCM supplies a 5 volt reference voltage to the Intake Air Temperature (IAT) sensor. The IAT is a thermistor that varies resistance based on temperature. As the temperature increases, resistance decreases. Low temperature results in a high signal voltage. When the PCM sees a signal voltage higher than 5 volts, it sets this P0113 check engine light code.

Potential Symptoms
There will likely be no symptoms other than illumination of the Malfunction Indicator Lamp (MIL - Check Engine Light / Service Engine Soon).

Causes
A code P0113 may mean that one or more of the following has happened:
* Internally failed IAT sensor
* Faulty connection at IAT sensor
* Open in IAT ground circuit or signal circuit
* Short to voltage in IAT signal circuit or reference circuit
* IAT harness and/or wiring routed too close to high-voltage wiring (e.g. alternator, spark plug cables, etc.)
* Faulty PCM (less likely but not impossible)

Possible Solutions
First, if you have access to a scan tool, is there an IAT reading? If the IAT reading is logical then the problem is likely intermittent. If the reading is less than -30 degrees, unplug the connector. Install a jumper wire between the harness connector signal and ground circuits. The IAT temperature reading on the scan tool should be maxed out at the high end. For example it should be 280 degrees Farenheit or higher. If it is, the wiring is okay, and it may have been the connection. If it isn't install the jumper wire between the IAT signal circuit and the chassis ground. If now the IAT reading on the scan tool is maxed out then check for an open in the IAT ground circuit. If you get no reading at all on the scan tool, it's likely that the sensor signal is open or the 5 volt reference is missing. Check using a DVOM (digital volt ohm meter) for a 5 volt reference. If it's there, then unplug the connector at the PCM and check for continuity on the IAT signal circuit between the PCM connector and the IAT connector.

I really hope help with this (remember rated this).
0helpful
1answer

I need to know where my MAF/IAT sensor wires are on my 2002 V6 ford mustang

it's the sensor on the intake air duct come out of your air filter. the iat sensor is integrated with the maf sensor
2helpful
1answer

2002 chev avalanche mat sensor

I assume you are looking for the wiring for the IAT because MAT sensors are no longer used..

here you go

black / white - PCM ground
pink - fused 12-volts
yellow - MAF signal
tan - IAT sensor signal
black - IAT sensor ground

manifold temp. sensors are no loner used.

I believe you are looking for the IAT "intake air temp sensor" which is part of the mass air flow sensor.

good luck

[email protected]
2helpful
1answer

What color are the wires for the iat sensor on a 2009 f-150 w/ 5.4 l

the iat is part of the maf sensor located in the air filter duct or housing. 6 pin connector. pin one color violet/gray is for iat. pin 2 is c-signal rtn yellow/violet. pin 3 maf yellow/violet. pin 4 maf rtn blue. pin 5 ground black/yellow pin 6 circuit breaker fuse 76 blue/brown
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2answers

2002 ford mustang gt map sensor enhancer connection? (for HHO)

MAP enhancers usually wont do the trick for long - the computer will learn the adjustment to the MAF and overide within a day or so usually less than a few minutes.

The computer is best altered using an EFIE to adjust the O2 sensor(s), usually adding between .2 and .3 volts to the O2 sensor signals does the trick - each combo of the HHO and car is slightly different - you have to play with it to find your best setting. You only need to alter the signal on the O2 sensors ahead of the cats as they are the ones the computer uses to adjust the fuel.
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