How to Test a MAF or MAP Sensor With a Multimeter - Plus an Operations Guide

Hi Mr. RNW, Mark here from pH, how are you doing.

I found this sensors, electrical wirings videos of your very helpful specially to me & other beginners in auto electrical.
Thank you!

I just want to ask 2 questions:
1) should the hot wire voltage depends in to car models ,
This first car +supply got ~5Volts (Toyota) then the Ford your cutted video got hot wire supply +12v volts.
Which is which , or its just really depends on car makers?

2) getting right ground wire thru continuity test, I notice your not removing or reminding that we should remove first the negative battery? Isnt it?


3) last 1 more, by getting the ground (-) wire can i just probe @ positive then get the other probe to the pins? In that way its other way around of getting the negative.,

Tho i like also the procedure of removing the negative post & probing to the pins, isnt it much safer?

can you show how to test MAP and MAS on Camry 2018 hybrid LE? and what the voltage and the reading should looks like

Hi there, I need help.
How to find the map sensor in 1G-FE engine Toyota Mark II / or Lexus I S 300 from year 2002

Can a car have MAF, MAP and IAT? Also can you use the same cleaner for all of them?

I like this guys videos, be checking him out .

Excellent video and demonstration!Do you have a video for checking vacuum leaks i have a 94 ford f150 5.0 XLT

U are good

I love the topic. Must be a very good subject. I feel u know what u are talking about. The PROBLEM???: You are EATING YOUR WORDS!. Suggest that you take a good diction instructor. Looks like u can't open ur mouth when you speak.

8 YEARS AGO! You sir, are a shining light to people like myself! An old electro mechanical engineer... 2 million views? Fabulous teaching! Greetings from NZ

Its been 8 years... did you ever replaced the MAP sensor and retested with the multimeter to see that voltage go up as you accelerated? I couldnt find the video... Cheers!

Nice video! ❤
However, to check for air leak it's better to use a smoke machine to avoid hazard.

Dang 2 Million DiY'ers was helped by this video. Congrats.

Been watching your vids for years. You know they're good when I come back and refer to them while on my projects

Thank you for the video

You should test all connections for voltage and not just stop after you find the 5v. My Nissan had a 5v and a 12v.
If you accidentally touch the positive terminal of a 12V power source with the positive lead of your multimeter set to measure resistance, it could potentially cause damage to the multimeter.

tested MAF sensor as described and found voltage did not go up or down with RPM. Got a new MAF sensor and same thing - no voltage change with RPM change. its on a a 2004 buick regla LS. what is the deal? seems like new MAF sensor is bad too or something wrong with test. Thanks for any help!

Will map or maf produce a p0403 code?

Great video, very informative and easy to follow thanks!

Thank you Master..

ok, nice can you make a air mass or tempture sensers etc of MERCEDES BENZ. C 220, 1996 , ELEGENC, PLEASE PREPARE A VIDEIO EXPLANATION, PLEASE,

Thanks for share information

Thanks for this very informative information. Great details !

😎

Great video, be nice to see how it works on newer model cars. Can't pull on the acceleration the same way. 😅

Thanks you 🎉🎉

I love this. I must learn more. I have been fixing cars for 50 years, but always the older non-computerised cars. Now I have spent a thousand $ on incompetent garages using their computer diagnostics and believing the computer instead of using the very few brain cells the Lord God gave them. From now on I will watch and learn from you.

These test are assuming there is no problem with the car that could be causing the MAP sensor to read wrong or throw codes. How can i test the MAP
sensor outside of the car?

And if your car doesn't run!!??

You are so awesome thank you for this straight to the point instructional thank you

I try this but when i hit pedal slowly the voltages reading is going down.

Thanks!

you are a good mechanic u explain with the mechanism how it works also the volt resistance testing failure solution amazing

Put some tape over the exposed sections of paper clips and meter leads

What if it’s a 8 or 9 pin. Pajero io 2002 2 ltr

Love all your videos. Great work

Great info, thanks for your efforts. 👍

My Mitsubishi lancer station wagon still has rough idle or cuts off at Nuetral/Park even after I replaced 4 spark plugs and air filtet.Need some idea Bro...thanks

Great, great video, thank you for taking the time and effort to make it.

could you have a bad map without engine light ?

I understand everything now, Thanks!

every educational :) thanks for breaking it down barney style

Very helpful videos.

Never mind mass airflow to fuel sensors. The end.

what about Matt.

can a bad map sensor cause a rich condition too?

Nice video thanks! my plug is reading 2 constant ground,(mass sensor) e250 2006' whats wrong?

Thank you for the knowledge that share especially for new mechanics like me god bless you

Can the MAP sensor cause an intermittent misfire and sometimes shuts off with no check engine light on when it happens. This only happens at idle and not every day 🤔