These letters identify the circuits that feed into its connector. The MAF sensor on your Frontier (or Quest, or Pathfinder, or Xterra) has the letters A through D etched onto it. Circuit Descriptions Of The Frontier, Quest, Pathfinder, Xterra MAF Sensor You don't need a fancy one, since all you'll be doing with it is verifying DC voltages. What Tools Do I Need?Ī Digital Multimeter is gonna' be your best friend in testing the MAF sensor on your Xterra (or Quest, or Pathfinder, or Frontier). Cleaning this type of sensor is very very easy and the last section of this article shows you just how. Why does it get dirty/contaminated? Well, this MAF sensor easily becomes contaminated with dirt and stuff from the air filter not performing its job or the box that holds the air filter is broken or not sealing correctly. The two biggest symptoms of dirty MAF sensor are 1) a lack of power upon acceleration and 2) bad gas mileage (although this is not an absolute truth). When the MAF sensor does get dirty (contaminated), it usually doesn't cause a tremendous amount of havoc. Dirty? OK, that the MAF sensor's 'hot-wires' are contaminated with dirt and/or oil. There's a good chance that the MAF sensor on your Pathfinder (or Quest, or Xterra, or Frontier) is just dirty. A tremendous lack of power upon acceleration.A MAF sensor code that lights up the check engine light (CEL), but not always.
These are some of the most common symptoms of a bad Nissan MAF sensor: Common Symptoms OF A Bad Nissan MAF Sensor You can find this tutorial in Spanish here: Cómo Probar El Sensor MAF 3.3L Frontier, Quest, Pathfinder, XTerra (at: ).
Here you're gonna' find some important tips and suggestions so that you can successfully diagnose the MAF on your Nissan car or truck. You'll find step by step instructions on how to test this 'hot-wire' type Nissan MAF sensor.īefore jumping into the tests, read this section first. So if you need to test the mass airflow sensor on a Nissan Quest, or a Pathfinder, or a Frontier or an Xterra, this is the article for you. This type of MAF sensor is used on the 3.3L V6 Nissan engine.
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