MAF check engine light and transmission help - Page 2 - Toyota Yaris Forums

CTScott · 04-01-2012, 09:16 PM

Quote:

Originally Posted by heeroyuy01195

Thanks Scott, but shouldn't I still be getting a resistance reading when testing between the ECM to ground and the MAF to ground? I just want to be sure before I get a new MAF sensor. Thanks for all of the help Scott, much appreciated!

No. Those two signal wires should not show continuity to ground, otherwise they would be shorted.

heeroyuy01195 · 04-01-2012, 09:21 PM

Okay thanks Scott, just wanted to double check. I saw in the manual on pg 91 that I was supposed to be reading 10k ohms or more between CT26-3 and ground or C20-118 and ground for the "check for short" so I thought there was supposed to be a connection there. Thanks for all the help!

CTScott · 04-01-2012, 09:32 PM

Quote:

Originally Posted by heeroyuy01195

Okay thanks Scott, just wanted to double check. I saw in the manual on pg 91 that I was supposed to be reading 10k ohms or more between CT26-3 and ground or C20-118 and ground for the "check for short" so I thought there was supposed to be a connection there. Thanks for all the help!

By 10K or more, they are saying that there should not be a low resistance connection to ground, which would be a short.

heeroyuy01195 · 04-01-2012, 09:36 PM

Yeah it just clicked in my head a little while ago what they were getting at lol. I'm not sure what I was thinking earlier; stupid me moment I guess.

heeroyuy01195 · 04-03-2012, 03:16 PM

Swapped the MAF out yesterday morning, car runs like a champ again. Thanks so much for the help Scott!

Thread Tools
Show Printable Version Email this Page
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Compilation of Yaris TSBs	eTiMaGo	DIY / Maintenance / Service	72	07-04-2024 11:36 AM
CHECK ENGINE !!! Dealer Blames (Oil Control Valve)	netspec239	General Yaris / Vitz Discussion	15	08-11-2018 04:31 PM
2012 Camry	Kal-El	Off-topic / Other Cars / Everything else Discussions	26	10-02-2011 10:20 PM
transmission light	confused	General Yaris / Vitz Discussion	3	01-22-2011 08:02 AM

04-01-2012, 09:21 PM	#20
heeroyuy01195 Post count means nothing. View User's Garage Drives: AW11, NCP91, Old Motorcycles Join Date: Jul 2006 Location: Florida Posts: 375	Okay thanks Scott, just wanted to double check. I saw in the manual on pg 91 that I was supposed to be reading 10k ohms or more between CT26-3 and ground or C20-118 and ground for the "check for short" so I thought there was supposed to be a connection there. Thanks for all the help!

04-01-2012, 09:36 PM	#22
heeroyuy01195 Post count means nothing. View User's Garage Drives: AW11, NCP91, Old Motorcycles Join Date: Jul 2006 Location: Florida Posts: 375	Yeah it just clicked in my head a little while ago what they were getting at lol. I'm not sure what I was thinking earlier; stupid me moment I guess.

04-03-2012, 03:16 PM	#23
heeroyuy01195 Post count means nothing. View User's Garage Drives: AW11, NCP91, Old Motorcycles Join Date: Jul 2006 Location: Florida Posts: 375	Swapped the MAF out yesterday morning, car runs like a champ again. Thanks so much for the help Scott!