Check out my amazon affiliate link to help the channel: www.amazon.com/shop/voltagedropdiagnostics

@matthawks

3 жыл бұрын

My truck is doing this but it will finally start? It's a 2015. Could it be the same? Great video

I'm happy to report that although the weather is still crazy hot, the shop a/c is up and running! I do feel the pain brother! Great video, thanks for sharing 👍😅

@VoltageDropDiagnostics

4 жыл бұрын

Wait, you're in A/C now? I shouldn't be suffering in this heat more than you haha

@SuperMarioDiagnostics

4 жыл бұрын

Voltage Drop Diagnostics facts!

Thank you Patrick. Good job. No need to apologize. You did great. Have a blessed and safe week to you and your family.

@VoltageDropDiagnostics

4 жыл бұрын

Thanks Billy! Jason responded to your question asking for part numbers for the tools used for hooking up the fuel gauge.

Buen vídeo, el calor no deja pensar con claridad, acá en la Baja sabemos de calor! excelente trabajo!

Always great to see a video from you, PJ! Thanks as always. Stay cool!!

@VoltageDropDiagnostics

4 жыл бұрын

Thanks Dave! I'm trying to stay cool! But Pittsburgh is breaking records this summer lol

PJ, you are AWESOME always good approach and excellent way u tackle the problem very enjoyable thanks for sharing bratha.

@VoltageDropDiagnostics

4 жыл бұрын

Glad you enjoyed it Thanks for watching!

Wooooooo! Glad to see a new video! Duty cycle? Is that correct? It was spot on awesome Pj. Short, but all the relevant info was there. 😊

Top job as always 👍🏻 Great explanation of the testing procedure. Thanks for sharing

@VoltageDropDiagnostics

4 жыл бұрын

Glad you liked it!

PJ thanks for sharing. I think it’s hot all over the place, plus up here on Long Island the humidity is brutal. Stay well Artie 👍👍👍

@VoltageDropDiagnostics

4 жыл бұрын

Exactly! This humidity has been taking it out of me!

Thanks for the great explanation. Have a similar issue. Truck starts with 20psi of pressure but after a few minutes, drops down to near zero before it cuts off.

Thanks for the video PJ! Love to see the scope in action.

@VoltageDropDiagnostics

4 жыл бұрын

Thanks! I have been on a youtube hiatus lately and just getting back into the swing of things here lol

Hey P.J. Great to see a fellow 412er and former co-worker sharing knowledge on youtube! I had one of these last week. Just something for the guys that are not comfortable with the scope. You can check the command from the engine ecu to the fuel pump ecu with a voltmeter that has duty-cycle capabilities. It will show you percentage of on time. Thanks for the vids homie!! Or should I say rockstar!

@VoltageDropDiagnostics

4 жыл бұрын

haha Thanks man! You're over there at Airport Toyota nowadays, right?

@joegiggs23

4 жыл бұрын

Yep. Jeff's a real good dude to work for. If you're ever ready to look for another place..........😜 give him a call!

Nice video man! And thanks for the corrections at the end! Hope all is well with ya

@VoltageDropDiagnostics

4 жыл бұрын

Thanks man! Yeah, I had to make the correction. I didn't want to leave bad information out there. I guess thats the benefit to video lol. It can always be edited.

Nice job PJ came out good. Stay cool and keep the Agua flowing lol brutal here as well

@VoltageDropDiagnostics

4 жыл бұрын

Hey, I am trying to stay cool but this humidity isn't allowing that lol

The video was super handy. Particularly the way u hooked up the fuel pressure gage. When u said that the module sends a variable voltage to the fuel pump, u made me bust out my Vantage Pro. I may b wrong but I think the computer sends a pwm signal to the module. The module then sends a duty cycle to the fuel pump. The voltage remains 12-14 but the rpm is varied by means of on time vs off time. So your original statement seems more correct. But you’re the expert. And your vids r always valuable and interesting. U have all that Super T experience, plus the advantage of factory input that u share with us. That’s why when a Voltage DROP video comes out, I DROP everything to watch it!!

@VoltageDropDiagnostics

4 жыл бұрын

haha Thanks Bill! At the very end of the video I show the wires going to the fuel pump from the module. You're right. The ECM sends a PWM signal to the module. But then the module outputs different voltages to the pump. High speed was around 12 volts and low speed was around 4 volts going from the module to the pump.

@billrimmer5596

4 жыл бұрын

Voltage Drop Diagnostics Thank u for reply. I was using a a different type of controller.

Outstanding diagnostics

Doesnt the heat suck. Well done PJ. Well explained and corrected

@VoltageDropDiagnostics

4 жыл бұрын

It has been brutal! I need to find a nice location that stays around 70 degrees all year lol

Great video PJ! Sharing....

@VoltageDropDiagnostics

4 жыл бұрын

ScannerDanner thanks Paul! You’re the best!

Ah ha!!! Thank you, PJ! I was wondering where Mario was located! Freaking Florida. Maybe he has a pool, or is close to tbe beach? Wouldn't a little gathering amongst good, honorable men be nice right about now? Love V.D.D. and Super Mario! Always kick-butt videos. Always!!

@VoltageDropDiagnostics

4 жыл бұрын

I was supposed to head to Disney this year and I was going to swing buy and hang out with him. But the whole virus thing put an end to that disney trip. Maybe next year!

Very good explanation and information

Great video! And I was just getting familiar with tundras two speed pumps. Now....I gotta relearn again.....

@VoltageDropDiagnostics

4 жыл бұрын

haha! Here is a secret. I have never had a fuel system failure on the toyotas with the 2 speed fuel pumps lol. I never dug into one.

@bartscave

4 жыл бұрын

@@VoltageDropDiagnostics , I didn't have a failure on one, however it took me a long time to figure out how they worked.

Mine was the module. Plugged in new one and fired right up. Parts store wanted $450 , I got one on Amazon for $99.

great video I've enjoyed your videos and follow you keep them coming i have a autel mk908 and a maxi scope new with it looking to learn from you and move forward

@VoltageDropDiagnostics

2 жыл бұрын

Nice! Hopefully I get to film more videos soon!

Great Job PJ - here in Oklahoma it’s just HOT all summer. We stop watching or even thinking about the weather forecast it’s quite redundant...95° -105° from July til September. Does a high amp draw Fuel Pump cause the FPCM to go down? Always thinking about the root cause I guess. Thanks again for taking the time to produce these videos.

@VoltageDropDiagnostics

4 жыл бұрын

The question about the high amp draw is a really good question. And honestly, it is something that I should have checked. But if I am being honest, from my experience, it seems that the issue is causing by rust intrusion onto the circuit board from being in the rust belt. Still, it would be best practice to check the amperage of the fuel pump just to be safe.

@kc360awareness

4 жыл бұрын

Voltage Drop Diagnostics - thank you for answering the question. Scope diagnosis is somewhat new to me. So I’m always looking for opportunities to use a new tool and sharpen skills. Yesterday we replaced an ignition module and had confidence that it should last because we tested the coil current ramp. Sure is amazing to “see” the current in 3D. The customer had questions about the health of the fuel pump... again current waveform showed a state of good electrical health.

Great job master! not easy but you did.

@VoltageDropDiagnostics

4 жыл бұрын

Thanks a lot!

Nicely done 👍👍

@VoltageDropDiagnostics

4 жыл бұрын

Thanks Josh!

Great video, thank you

@VoltageDropDiagnostics

3 жыл бұрын

Thanks for watching!

Awesome. Thanks for sharing... Cheers.

@VoltageDropDiagnostics

4 жыл бұрын

Thanks for watching!

Nice video PJ. I had to watch it twice to grasp your mistake. I would have presumed the pump was controlled by pwm.I haven't seen one controlled by voltage.

@VoltageDropDiagnostics

4 жыл бұрын

The older toyotas that had a two speed pump would have them running through a resistor for low speed. But I could have done a far better job explaining the operation. Sorry about that.

@d.d4184

4 жыл бұрын

@@VoltageDropDiagnostics no you did a good job explaining. Keep up the good work.

I had the same problem with my 2012 Tundra. It turned out to be a 10amp fuse under the hood that went bad. Replaced fuse, started right up!

thanks put out more with the actual repair sequence just had mine done on my 2010 tundra

Great video. Electrical diag. Is my Bermuda triangle.

Good explanation got here through scanner danner

@VoltageDropDiagnostics

4 жыл бұрын

Paul is the best! Thanks for stopping by!

Nice , another awesome helpful video. I have learn a lot from you and super Mario... stay cool and drinks lots of H2O

@VoltageDropDiagnostics

4 жыл бұрын

Thanks buddy! Mario is great! One of my favorite people in the industry!

@abraham01257

4 жыл бұрын

Voltage Drop Diagnostics do you have a video on blown head gasket diagnostics with a lab scope ?.... I watch a super Mario video but I’m still little green .... would be awesome to see one from your perspective... be safe , stay cool

@VoltageDropDiagnostics

4 жыл бұрын

abraham01257 yes and no. I have a video on a corolla with a bad head gasket. But the head gasket isn’t leaking into the cooling system like i believe youre asking for. But instead the cylinders are leaking between each other that i diagnose with a pulse sensor.

@abraham01257

4 жыл бұрын

Voltage Drop Diagnostics yeah I have watched that video you referring to, I’d like it... I use Cody’s diagnostics this morning, I’m just not sure if on a good know the line should stay flat, is that stamens correct?... long story short I did find out it had a blown head gasket but I’d like to be able to make a call just by waveform... you’re awesome , people like you and super Mario makes me want to get better at this ,keep up the awesome work you do

👍 thanks for sharing!

@VoltageDropDiagnostics

3 жыл бұрын

Thanks for watching!

Great video lots of good info , any way I could message you about a problem I'm having with my 2007 tundra ?

Thank you

thank for sharing

@VoltageDropDiagnostics

4 жыл бұрын

Thanks for watching

Great video, I followed the steps and found no signal coming from the ecu to the fuel pump module. We replaced the ecu and there's still no signal coming from the ecu. Crank sensor is working, no other codes. Have you ever come across this?

I am having the same issue, my module looks pretty rough and my fuel pump is fairly new (2yrs) so I wanted to find out how u jumped out the module to see if that’s the problem before throwing expensive parts at it. Dealers around here are between $500-675 for the module. Any tips to jump this to see if it’s the module?

wow. Varying Voltage....What other brand vehicles use that. Thats just seems wrong in so many ways...Thanks for your video's . I learned today that the 2014 Toyota Corolla 1.8L generator is controlled by the combination meter instead of the PCM......I wonder if it is Varying voltage or pulse width ??????

Interesting video as always thank you for sharing it, but I'm confused at the last part of your video you are getting power from the control module which is 12 then 4 and you got ground what's wrong with the module then?

@VoltageDropDiagnostics

4 жыл бұрын

This is after replacement of the module. Those are known good waveforms.

@hamham4547

4 жыл бұрын

@@VoltageDropDiagnostics thank you

Hello sir, I am starting to have starting issues on my 2017 tundra. Was just cold mornings 29 degrees f, and for the first time today, it was 63 out and almost did not start. I am not mechanical inclined. Took it to toyota and they said alternator. Just can't bite on that. So I am a little confused on what your diagnosis was. Dangit, I can't recall what you said. I am probably getting ready to mix terms up. Did you say the issue was the fuel pump module? Hehehee I can't go back and listen with out finishing typing. Let me know sir and thank you for your video

I have a 2015 making similar cranking sounds but eventually it will start. Could it be possible it's the same issue?

Hey, great video. Just a quick question, maybe I missed it but if I replace my module, does it need to be re-programmed? Thank You

@JohnSmith-qd1qm

2 жыл бұрын

Hey, I just saw you replied to someone else with that question....Thank you soooo much! very helpful

Thanks for the tip What are you using for a lab scope

@VoltageDropDiagnostics

4 жыл бұрын

I was using my snap on verus scope in this video.

Interesting. I haven’t seen one of those going bad on a Toyota yet (I live in FL)

@VoltageDropDiagnostics

4 жыл бұрын

I'm thinking that it is rust related. Although I did disassemble this module and I didn't see any rust intrusion on the circuit board.

Good video, I subscribed SD sent me

@VoltageDropDiagnostics

4 жыл бұрын

Paul is the best! Thanks for stopping by!

am currently having a crank no start issue I changed the fuel control module and it ran for 500 miles then to problem came back..runs for about 20 min then cut off I bought a fuel pump with assembly from Amazon for about $120 installed it and still no start ...my fuel line head broke off I glued it any ideas

Question! If I may: 5:38 when you jump power and ground to the fuel pump, are you back probing or did you disconnect the connector to the fuel pump and then attach to the male pins on the fuel pump itself?

@VoltageDropDiagnostics

4 жыл бұрын

Daniel Koontz i disconnected the connector at the fuel pump control module. And front probes using terminals the 2 wires that leave the module and go to the fuel pump.

@hughkoontz2166

4 жыл бұрын

Great question Daniel. I'd expect nothing less from a Koontz!

@danielkoontz6732

4 жыл бұрын

@@hughkoontz2166 hah! No problem, Mr. Koontz!

Can the fuel pump ecm be bad even if pump is pumping 43psi to the fuel rail? 2016 tundra cramk no start

Do you have a part number for the fuel pump control module? I’m having the same exact problem

@VoltageDropDiagnostics

3 жыл бұрын

I dont. i Recommend calling your local toyota dealership and grabbing the part number from them.

Good diag, bring on the rust with that rubberized undercoating

@VoltageDropDiagnostics

4 жыл бұрын

EXACTLY! These people don't know what theyre doing to their vehicles with that undercoating! Thats the worst thing that you can do!

fukn badass dude, Good explanation helped a lot

@VoltageDropDiagnostics

3 жыл бұрын

Thanks Dan!

I have same year crewmax spudding when starting especially when remote start had dealer replace battery and fuel pump. Very expensive. Still doing it this time shot out white smoke. Truck only gas 71k

@blackstarVids

Жыл бұрын

Did you ever figure out what it was? Mines doing the same

LOL. Come on down to Florida and try out the 90 degree weather for 3 months or more straight each year.

@VoltageDropDiagnostics

4 жыл бұрын

Economan i fell mario all of the time that I was in Florida once. At Disney for a week. And that week was one week too many in that nonsense! 😂

My tundra do exactly the same thing and don't want to start the motor, what should I do? Thank you.

From SC

@VoltageDropDiagnostics

4 жыл бұрын

Nice! What part of SC?

I was already subscribed, but Paul Danner sent me

@VoltageDropDiagnostics

4 жыл бұрын

Thanks Bryan!

Do you have to reprogram the vehicle. I was going to replace but people say you need to do this. How to reprogram?

Hope you can help. Took my 12 sequoia to the dealer I bought it from, they also diagnosed a bad fcm, but. Two days later I had the same issue, now they are saying my ecu is Intermentally is causing the issue. Don't really want to pay 1100 for the ecu, any recommendations?

@VoltageDropDiagnostics

2 жыл бұрын

Without seeing the car myself i can’t really say what can or might be wrong. But if you don’t trust the technician, it might be beneficial to get a second opinion.

@unsafesk8erm

2 жыл бұрын

@@VoltageDropDiagnostics is not that I don't necessarily trust them, I just feel like they aren't properly diagnosing it. The only reason I took it back to them is because they aren't charging me for labor. But according to the videos I've watched, I thought it was a looped system therefor, if something was wrong with the fuel pump, it could make it seem like there might be a different issue

Does the fuel pump control module need to be programmed?

@VoltageDropDiagnostics

4 жыл бұрын

Nope, just plug and play.

Did you make that fuel line adapter? Or did it come in a kit? Either way, if it's no problem may I get a part number or item description (size of T and quick connector, please. Thank you Patrick. Have a blessed and safe week to you and your family.

@jasont.6868

4 жыл бұрын

Looks like the Toyota/Lexus EFI FUEL PRESSURE TEST KIT P/N 09268-45101-01 As for the individual P/N for the T fitting: 09268-41250-01 Individual P/N for Quick Connector: 09268-41500-01 Also, some of the newer Toyota's on the smaller vehicles such as a 2014 Corolla utilizes a smaller quick connect/T fitting (P/N 09268-00010-01) that does not come with the Kit mentioned above.

@VoltageDropDiagnostics

4 жыл бұрын

Thanks! You're on it!

Hey pat I have a 14 tundra with bank 1, and 2 lean 5.7l flex fuel. No vacuum leaks, and good response from o2 sensors. Any common issues you’d recommend looking at?

@VoltageDropDiagnostics

4 жыл бұрын

Yeah. There is a TSB for those. Have you seen the TSB?

@johnsanchez1393

4 жыл бұрын

Voltage Drop Diagnostics actually no I don’t exactly have access to tsb, and getting wiring diagrams from parts stores is getting old lol

@VoltageDropDiagnostics

4 жыл бұрын

John Sanchez you’re gonna need to take it to a Toyota dealership because i believe there is a computer update as part of the service bulletin. And it sounds like you won’t have access to the tools to do computer software updates?

@johnsanchez1393

4 жыл бұрын

Voltage Drop Diagnostics I’m currently working with a snapon modis

@VoltageDropDiagnostics

4 жыл бұрын

John Sanchez are you a full time technician that wants to get into programming?

Alsalm Alicom brother how do you doing ? I have a question about the autel scope how to set it when doing a pressure test either in cylinder or fuel pressure test using wps500x??,,

@VoltageDropDiagnostics

4 жыл бұрын

The autel scope has the ability to make custom probes. But I'm not sure how to actually do it. It isnt very user friendly as far as that. BUT there is a conversion in the WPS500X user manual that tells you the conversion between voltage and pressure.

@mediilbrahim2835

4 жыл бұрын

@@VoltageDropDiagnostics hi sir I've read out the manual of the wps500x and it says 1v/100psi so I set the range of the autel scope 5v dc for range 1 on channel A for example?? And if you don't mind I'm confused between dc and ac on channel setting what's the difference between them .. Thanks a lot and sorry for bothering you sir

@VoltageDropDiagnostics

4 жыл бұрын

TEACHER!i!i! l yes exactly. So leave your scope on a 5 volt scale for range one of the pressure transducer. Then 1.8 volts would be 180 psi. and leave the scope on DC for most measurements.

@mediilbrahim2835

4 жыл бұрын

@@VoltageDropDiagnostics Thanks a lot sir God bless you pro

👍👍👍🌷

do you happen to know if this was a flex fuel tundra?

@VoltageDropDiagnostics

3 жыл бұрын

It was not.

Have you ever dealt with a tundra that no started after being warm, cold starts just fine, after being turned off and sitting for approximately two to three hours it won't start back up. 2008 Toyota tundra v6

@VoltageDropDiagnostics

3 жыл бұрын

What is the engine missing? Fuel, Spark, Compression?

I see you work at Toyota. Any chance I can get the ECM connector pin diagram for a 2000 sienna le? I am trying to backprobe the o2 sensors at the ecm, but I don't have the schematics. I could PayPal you a few bucks for your time.

@VoltageDropDiagnostics

4 жыл бұрын

Shoot me an email @ yotaguruyt@gmail.com and I’ll see what i can get for you.

@freddieco3487

4 жыл бұрын

I just sent you the email. By the way, scannerdanner sent me here!

@freddieco3487

4 жыл бұрын

I just checked. Thanks for your help!🙏 How much is this going to cost me?

@VoltageDropDiagnostics

4 жыл бұрын

I emailed you again lol

I have a 2008 toyota tundra 4.0 v6 , I replaced the tension idler bracket. all was ok, the I bobbled the alternator, a spark, I to change 3 fuses, 4 relays, The truck runs but no radio, heater fan, power windows, and worst I cannot get out of park. Any ideas?

@VoltageDropDiagnostics

3 жыл бұрын

Honestly, sounds like more fuses are blown.

@jonihli6225

3 жыл бұрын

@@VoltageDropDiagnostics Thanks for the reply

@jonihli6225

3 жыл бұрын

@@VoltageDropDiagnostics it turned out to be a blown alternator bus bar, it is built into the top off the engine fuse box.

We're is your shop

🚘🖤🚗

@VoltageDropDiagnostics

4 жыл бұрын

Thanks babe!

What is the weakest links on the 5.7 tundras?

@VoltageDropDiagnostics

4 жыл бұрын

There is a weak link? Both Eric O over at SMA and myself drive them for a reason lol. I guess you can say that the cam boxes seep oil. But very very slowly. Once in a blue moon you will see one with a bad head gasket...I seen 2 or 3 out of thousands. But thats really about it.

@jeffreygoss8109

4 жыл бұрын

Voltage Drop Diagnostics thanks that’s what I wanted to hear. I bought one, well I’m paying for one, because Mr O never has a repair video on his.

Well, at least ir doesn't need to be programmed vin - specific like GMs

@VoltageDropDiagnostics

4 жыл бұрын

For sure! OR you can buy a dorman preprogrammed FPCM that just so happens to delete your readiness monitors when you turn the key off! Yeah, that really happens lol.

@gianfrancoa

4 жыл бұрын

@@VoltageDropDiagnostics no Dorman nooooo. Remember when it was just a relay feeding the pump? So simple

@billrimmer5596

4 жыл бұрын

Voltage Drop Diagnostics Speaking of Dorman, I’m doing an 06 CRV that has a Vtec solenoid with the wings on it. Just got back from Honda with an OE solenoid when I saw this vid. First things first. Watch the vid, then install the solenoid.

When you bypassed the fpcm, could you better explain how you ran your leads to do so?

@unsafesk8erm

2 жыл бұрын

Did you literally just run 12v directly to the harness for the fuel pump? And what happens if you leave it bypassed?

@unsafesk8erm

2 жыл бұрын

Nevermind. I figured it out. One question though, how do I test a signal from my ecm if I don't have the scanner like you do. I bypassed the fpcm and my car did fire up no problem though.

@unsafesk8erm

2 жыл бұрын

It ended up being a loose connection underneath the left rear fender

@JoseLopez-je9mx

2 жыл бұрын

@@unsafesk8erm loose connection to what?

@unsafesk8erm

2 жыл бұрын

@@JoseLopez-je9mx from the fuel pump, they have another connector underneath the left rear fender for some reason and the miles connector kept coming unseated so I took the wires out completely and adjusted the pins and it hasn't happened in a while. If it happens again again I'm just going to cut it out and connect the wires directly

So it was the fuel pump control module?

@mikesabin8568

4 жыл бұрын

Yes. He had good signal to the module from the engine computer, good power and good ground. The module had everything it needed. Then he full fielded the fuel pump at the end of the video with the power probe and car started proving the fuel pump itself works. What he was saying was at first he thought the module pulses the fuel pump but it doesn’t pulse the pump it sends variable voltage. This module was bad

@VoltageDropDiagnostics

4 жыл бұрын

Just like Mike said. Thanks Mike! But yeah, the FPCM fixed it.

@jeremyanthony9300

4 жыл бұрын

@@VoltageDropDiagnostics is that common on tundras?

modules , modules ,,,, modules !!!!!!!!

@VoltageDropDiagnostics

4 жыл бұрын

Can any manufacturer make a quality fuel pump control module?

Is the only reason for testing fuel pressure first is that its easy and u seen it before? Is there any logic based on how the car was acting that made u believe fuel pressure wasn't right? Or literally fuel pressure is your go to on no starts if easy to get a gauge on the vehicle.?

@VoltageDropDiagnostics

4 жыл бұрын

Turbotomass i went that route because it was the easiest. Generally I would have sprayed starting fluid, to see if the engine ran. But honestly, the quick connect for the fuel gauge is faster than popping off the intake tube to spray starting fluid with the setup that i have for getting fuel pressure readings. plus, it had kinda of a very slight, brief start and stall. Which led me to believe that it was getting a small amount of fuel. But not enough.

@Turbotomass

4 жыл бұрын

@@VoltageDropDiagnostics cool.