How to Test a Rear Window Defroster Grid With The Fluke 233

bit.ly/2O03vEX
In this video, our automotive program manager here at Fluke will demonstrate how to test a rear window defroster/defogger grid with The Fluke 233 Remote Display Digital Multimeter.
The Fluke 233 Remote Display Digital Multimeter features a removable display, giving you the flexibility to take measurements up to 10 meters (33ft) away from the Fluke 233.
To test a rear window defroster grid, connect the leads to the defroster/defogger grid, turn the key on and check the wireless display to determine whether there's voltage coming from the rear window defroster/defogger grid. Be sure that the Fluke 233 is measuring DC volts.
If voltage is present, next is to test the resistance emitted from the rear window defroster/defogger grid in each location. Thle Fluke 233 Remote Display Digital Multimeter comes with flexible back probe pins. Use the back probe pins to measure resistance of the entire grid and check if there's a loose connection in the any part of the defroster/defogger grid.
To learn more about the 233 Remote Display Multimeter, visit the Fluke website: bit.ly/2O03vEX

[@PlatinumZee]

Niiiiiice being able to take the display out is awesome!

[@jleuck64]

Always a big fan of your videos Cory. Gotta call ya out on your choice of using the Ohmmeter to diagnose a defogger grid though... It's one big parallel circuit(s) so you won't see breaks. Ditch the Ohmmeter and use the Volt meter next time ( ;

[@deseremere]

"What I'm looking for is an open" - the problem is that there is no open, it doesn't exist. There are 10+ heating connectors in parallel between 12+ and ground, and unless every single one is cut your open is not going to be there no matter what. What you need to measure is the Ohm increase. For a broken grid line the ohms will jump slightly compared to the rest.

[@MechanicTechnicianRepair]

Exselecte diagnostic amigo

[@M3GAN3116]

Thanks 👍

[@gravey07]

Great bit of kit

[@user-ys9to2ie7k]

Would the passenger side on my C5 Corvette also be the positive?

[@mikepeckham3084]

I took my car in to see why the rear defrost wasn't working. They tested every thing and said it came back to a faulty module that cost 700 dollars. Can't i just tap in to the wiring and add a manual switch and turn it on and off myself?

[@INTERNA9]

THANX

[@tomvarley4344]

What is the range, is it RF or optical ?

[@oetken007]

Fluke Corporation => You will never get an open reading because the are other lines in parallel. You only can measure a small jump in the resistance reading right across the interruption. I will forget your fault, if you send me one of these meters ;-)

[@meupaipapai7924]

233 queimou fusível agora somente luz vermelha acende parou tudo..

[@natefidalgo7625]

Thats why i need to the ac/heater control unit wiring diagram for a chevy mont ss 2005 to see whats going on to trace the issue but its screwing up heat in this car. Very weird issue.

[@chaplainchuckles]

Using a sharp probe can damage the thin grid lines!

[@will8677]

He was very ginger in touching those painted lines, but, good advice to other people who might be considering trying this themselves.

[@Olds_Pwr]

One big problem with this meter. Unlike the base, there is no on/off switch for the display unit, Instead of spending money on new batteries, I started to use rechargeable ones in mine until I got fed up with it and went back to my 179. They should have installed an on/off slide switch on the side to prevent this display from having a parasitic draw on it.

[@solitaire5142]

Or use any $0.49 12v incandescent light and do the same job.

[@natefidalgo7625]

ever run into a problem where when you press the defrost button for rear defrost on ac/heating control unit you get battery drain. I imagine its a short but it doesn't blow any fuses. And the weird thing is its affecting heat coming out of the vents for heating the car to. So i am lead to believe that the circuit for the defroster is before all the battery fuses so just drains the battery without blowing any fuses... or its enough corrosion resistance to make the short not a fully short wire to prevent a blowing a fuses just by corrosion build up resistance...hummm,

[@LET005]

A close up of your meter settings for us novice guys would have been helpful...

[@fluke]

Hi there - You can view additional product images of the Fluke 233 Remote Display Digital Multimeter here on our website: www.fluke.com/en-us/product/electrical-testing/digital-multimeters/fluke-233 If you have any additional questions, please let us know. We're happy to help!

[@Llama_vet]

What if it shows a negative number?

[@meanodustino9563]

Really speaking Facts Usually means your leads are backwards

[@tony2682]

So? how did you TEST if the HRW in UK (heated rear window worked properly under defrosting/ misting) all the grids working? I only have 3 working no breaks in the other grids. WoW!!!! £280 for that meter....Im from the UK could buy a new back screen for that price...just saying thats all.

[@TourmotoDesign]

I'm pretty sure you did that wrong.......great meter though!

[@deegee6021]

The problem was he bought a Jeep...