WlcTL

Any1 else getting these trouble codes? the car is in limp mode now and wont go over 25mph i found a post on it but it wasnt too specific. i think i just need a new speed sensor but not sure. the post said they paid 500 for dealer to fix but some1 else did it himself for 80bucks. any1? thanks

P.S. this is on my 04 tl not the tsx

Majofo

You're might be effed.. If you're in limp mode check your ATF condition.. when did you last do a 3x3.. They're electrical / sensor DTC's for the tranny but if it's not an electrical failure.. then it's mechanical.

Tripnbeats

yea but in the book it says it cant be mechanical its electrical. it stats this code is caused by an electrical circuit problem and cannot be caused by a mechanical problem in the transmission. so something is effed with ur electrical they have to go through a shit ton of cables to really really diagnose the problem or replace the harness.... which would make life too easy for them. i hope you still got warranty.

Majofo

on this one.. I suggest taking it to a Honda / Acura Tranny expert (indie shop).. Each stealership usually has a couple MT's who know tranny's well but for the price of labor to diagnose it.. might be cheaper to swap.

Definitely get a 2nd opinion if Acura says it needs replacement and they wont goodwill it.. and then bring up the procedural diagnostic routine and ask them why it would need replacement. Definitely check the condition of your ATF!

Keep us updated!

Tripnbeats

wow man.....if they decide to repair this properly or troubleshoot further....they are in for a hell of a time. theres 33 steps to correct the 717 and 22 for 718.... it could be a loose connection or a bad cable in both scenarios.

Tripnbeats

yea man def do what majo says check the fluid or change it and reset the computer by disconnecting the battery for 20 mins or so....then go out for a drive n see if it pops up again....lol a long drive u need about 40 miles before the probs start to appear to the computer....if it works....u saved urself a few bucks.

RACINGHART03

iTrader: (2)

DTC P0718: Input Shaft (Mainshaft) Speed Sensor Intermittent Failure and DTC P0717: Problem in Input Shaft (Mainshaft) Speed Sensor Circuit both of which are circuit issues. So that means something is f'd up in the wiring. Probably a mouse got jiggy with your harness.

Tripnbeats

racing if u look further into the matter.....in the manual it states it can only be an electronic issue....the mouse probably did get jiggy with it lmao!

RACINGHART03

iTrader: (2)

lol. Yeah I rarely use manuals. I fix 99 percent of my issues with schematics. If the word "circuit" is in the code then that tells me right away its a wiring problem.

Majofo

I asked a Acura tech about this issue and they said typically they recommend replacement, why? because it's easier. I wish I could say "unbelievable" but I'm starting to think the new Firestone is Acura Service.

Tripnbeats

lmao majofo ur right man....yea becaue it is easier and the techs arent trained in electronics properly.... if i owned an axcura dealer or at least ran one i would have a department setup for customers with electronics problems....regardless of what it is.....id have an acura tech helping them out and working on the cars at half the normal price.... rewiring and problem solving isnt something that requires a vast degree of knowledge

Majofo

The ECU's on these cars are complex to say the least. I haven't even started to investigate the complete system as it may take me a year or two just to understand full operation. You may find this an interesting read:

http://www.spectrum.ieee.org/feb09/7649

Unbelievable!

Tripnbeats

well im certified Master MECP so training for these systems was a huge part of it.... plus i graduated college with a degree in electromechanical engineering....so that kinda helps......integration for alarms without bypass modules integrations with bypass modules and remote starters system integration.... i have the whole system figured out on the car but i wont touch it because it requires alot of work and bypasses to make a few things work..... and the people arent willing to pay for it... mitchell online paints a very nice schematic of the electronics system for just about every car on the market so its not hard to figure things out...but its not easy either because they dont give u resistances or anything else to make life easier... they let u figure out all the fun stuff on ur own.

Tripnbeats

nice article byy the way.
Funny thing is....the whole 12 volt thing will end soon....once the hybrids n electronically motorized cars start picking up we will go to 36 and 42 volt cars....requiring less wires and thinner gauged cables to run the car efficiently..... if u ask me.....they are all cheaping out on the quality of things. but the best thing about that is that we dont have to wire tap anything....we just program the car with the info and u have an alarm a remote starter a system anything u want will be software based......to some degree.

Tripnbeats

lol yuppp! reading between the lines...

RACINGHART03

iTrader: (2)

I beg to differ on this one. Maybe 10 years ago. I am considered the electrical guru by my DPSM and sometimes when I look at a ten page schematic for something like our newer multiplex systems with the Fcan Hi and Fcan low systems it makes me a little dizzy.

Majofo

I fear that once I start into it.. I won't stop.. then I'll try to mod the shit out the programming, experiment with the emissions logic.. then I'm effed.. I have enough trouble keeping it out of the shop as is.. I have a degree in EE but cars and mechanics have been an unruly hobby. A member called AZ car porn and they're 100% right.

I'll have to check out the mitchell schematics. I've been putting off a project I wanted to start.. using the light stem switch for the fogs to turn on aftermarket fogs. I know it's logic controlled but that's one of the most requested projects I've seen and I don't know of anyone who has done it yet. Should be simple logic tie.. we'll see..

Yep.. it's funny.. the old saying: "they don't make cars like they used too.." I've talked with a few shops who wont even touch a hybrid, not even for an oil change because of the high voltage battery packs and different voltage schemes. I think bumping up voltage outputs and wire gauge will go as well as trying to push 64 bit in a 32 bit market.. :blah:

Well I'll definitely have to PM you over some upcoming stuff. The only bad thing about those who figure out your expertise is you become a wanted man.. lol..

RACINGHART03

iTrader: (2)

Reason being is techs cant get paid for diag as quickly as they can get paid for R+R BUT if they were a little more fluent in the diag dept. then they would spend less time R+R ing parts with NPF. This would in turn would add up to more free time to do other jobs we make more money on.

Majofo

The worst is trying to follow the flow between disjunct pages. You get lost and start over again. Even when they mark the signals.. it's a nightmare.. makes me want to bypass everything or start from scratch.. I read somewhere about a car builder looking at a modern build.. said this is garbage and scrapped the whole design and rebuilt it better / simpler.

Majofo

I hear you.. I don't imagine, in worst case, that it's much cheaper to diagnose and fix than swap.. especially if the mechanical condition isn't so good as well.

RACINGHART03

iTrader: (2)

^ I agree. I cannot figure out for the life of me why we do some of the things we do. But then again having a usb hub for your audio system is imperative...... < did you sense the sarcasm??

Tripnbeats

Ok I agree with u but..... troubleshooting wires n testing for shorts n rewiring is still all the same....but once the short passes the CAN bus or through it and shorts more stuff....ur in the poop shoot... thats where it gets complicated....and you are right.....but i still dont think its really that hard to figure out...a lil bit of background and someone who can do some basic trig or even algebra can figure this stuff out.

Tripnbeats

that is the worst but once u see how it works.....your like...I see why they did that... for instance id rather plug into a computer and find out my line from the window regulator is burned rather than going through the system one by one. i still think simpler is better....but we still have to get with the times and go with the flow....

Tripnbeats

racing whatta u mean??? U DONT HAVE THE MOST IMPORTANT PIECE OF EQUIPMENT IN UR CAR?!?>!?!?!!!?!?!??! THE USB!? lol.

Majofo

My most important piece of equipment is my Cassette Player .. but seriously.. tape drives baby.. OG

RACINGHART03

iTrader: (2)

IFFFF you are lucky enough to have a can bus shorted or open. Unfortunately on our cars and in my life lol, its always intermittent loss of com codes due to pin fits in the can lines. Now as 0f 09 we are running Hi and low busses...ughhh. lol...in the poop shoot....thats where I live.

RACINGHART03

iTrader: (2)

No lol. And its a wonder I have made it this long....I will admit I think its neat.

Tripnbeats

yea its neat.....i dont have one either i just went the old fashioned way...replace the radio with a pioneer avic model and a harddrive built in lol.