OBD 2007 & Check Engine Light

<div class='quotetop'>QUOTE(Dave Santa Barbara @ Mar 5 2007, 01:24 PM) [snapback]400542[/snapback]</div>

this car is under warranty and with the CEL on it's Toyota's responsibility to check and fix the problem.

 

the MFD service menus do not tell you OBD codes. you need a scantool to pull those.

 

<div class='quotetop'>QUOTE(Dave Santa Barbara @ Mar 5 2007, 01:24 PM) [snapback]400542[/snapback]</div>

The diagnostic code definitions are in the 2007 Prius Repair Manual, and that is on-line at techinfo.toyota.com, but it is not free. A one-day subscription is $10. For that $10 you can download as many different files as you can in that one day, so it makes sense to try to download as much as you can that you think might be useful. The Repair Manual is in hundreds of separate PDF files -- probably to discourage people from just downloading the whole thing.

 

As Galaxee stated, the "secret" MFD menus do *not* display the engine codes, they show only AVC-LAN and MFD codes (so, things like MFD errors, codes to do with the stereo system, and the navigation will show up here). Clearing the MFD codes will have no effect on the "Check Engine" light (mainly because they have nothing at all to do with the engine management system). You need to buy a OBD scanner (specifically one that will work with the CAN bus) in order to pull up (and clear) the engine codes..

 

I have a question about the "engine service required" light. Mine came on this morning. I have 4,600 miles on the car is that just the normal service it is talking about?

 

<div class='quotetop'>QUOTE(bhaynnes @ Mar 6 2007, 12:13 PM) [snapback]400930[/snapback]</div>

Yes, it will come on every 5K to remind you to change the oil. The dealer can reset it, or you can reset it yourself if you change the oil. Instructions are on here several places.

 

Does your OBD2 tool have the "enhanced" or "manufacturer-specific"
ability? Without that you're probably going to be unable to talk
to all the ECUs and pull anything other than the P0xxx type, and
if your problem is off in P1xxx land or higher, the generic tools
are SOL.
.
_H*

 

Many auto parts shops ..(Autozone, Checker..etc) will read the engine codes for free. Of course, all they will give you are a bunch of number. It's up to the mechanic to make sense of them.

 

<div class='quotetop'>QUOTE(narf @ Mar 8 2007, 01:19 AM) [snapback]402110[/snapback]</div>

New to the Forum, but I have been a Toyota Tech for the past 12 years. Go to the dealer for any CEL. Any dealer who says "miinimum 4 hours check out time" is NUTS! The new Toyota Techstream scan tool can retrieve ALL codes within 5 minutes. Even the older Vetronics scantool can do it in less than 10 minutes. Diagnosis may take longer, but most cases not much.

 

Techstream? Is that the new replacement for the Mastertech?
Who makes it?
.
_H*

 

yeah, it's the laptop deal, hobbit. it's pretty kickass according to DH. i have yet to see it myself.

 

<div class='quotetop'>QUOTE(hobbit @ Mar 9 2007, 11:29 PM) [snapback]403188[/snapback]</div>

Techstream is the new Toyota scantool, (Dealer only at this time) It is a Panasonic Toughbook laptop, encased in a rubber coated cage which houses the Vehicle Interface Module and includes the DLC cable. It is capable of performing ALL diagnostic functions for Toyotas and gives the tech a direct wireless internet link to the Toyota Information System (TIS2). We can pull a code from the car and look it up from the database whiles sitting in the driver seat. If a computer reflash update is needed, we can download the program and reflash the ECU without even getting out of the car. A lot of dealers are still waiting to get them delivered and installed, but we got ours and it is AMAZING! Cuts my diag time dramatically.

 

Ah, so we've got another Toyota tech in our midst? cool!
.
_H*

 

<div class='quotetop'>QUOTE(hobbit @ Mar 10 2007, 04:44 PM) [snapback]403484[/snapback]</div>

Yep. I have been working on them for 12 years now and love 'em. I have been working on Prius since they first came out and I seem to get the majority of the Hybrid concerns that come to the dealer I work at. Although i don't own a Hybrid, (my 97 Tacoma has a lot of life left yet and I would want a Hybrid pickup anyways) I do love the technology. Feel free to hit me in the email with any questions and I will try to find the "official" Toyota answers if I can.

Rick
[email protected]

 

welcome, Rick!

my husband is also a toyota tech, but not for 12 years yet. he also gets all the prius/hihy/hycam stuff that comes through. replaced engine room wiring harnesses on all 3 of em in one week, even. that was a rough week. we signed up on the waiting list for a prius when we decided it was time for a new car and he told me how cool he thought they were.

careful now, if you tell these folks you're an expert you're on the hook it's a full time job sometimes :lol: