OBDII Drive Cycle Test, consultants help

I asked this question over at this thread seaching the archives:

http://ferrarichat.com/forum/showthread.php?p=135394970#post135394970

We are new to OBDII/TSI emissions "smog" testing in Austin Texas. It just was mandated Sept. 1. My shop has successfully passed every car we've run through since the law change including some really far out High HP modified cars until this week. I've got (2) 2002 360's that we can't even get started with the OBDII test as they have yet to fully reach their ready state. I.E. O2, O2 heater, 2nd Air, Warm Up Cycle, and .....uh.....oh yea Cat.

One is a Euro Modena that had an electrical connection problem with US conversion added on Secondary Air injection system as well as a brake switch signal. We repaired both and cleared both with SD2 and check engine light gone. Have tried performing Drive Cycle Test by letting it go through warm up period driving it up to the closed old airport and doing laps at normal "easy" grocery getter speeds and braking. Then going quicker, but smooth, go back to shop, stop let it cool off and do again. Put 75 km on this one car and still have 5 items not ready.

2nd car is a 360 Spyder. Had to disconnect the battery for electrical repairs to the driver door. Repairs done and now went through same procedure to get "ready" and still have 02, O2 heat, 2nd Air, Warm up complete, catalyst.

Parameters of engine show O2 sensors working properly, show engine going from closed to open properly. You can hear the Secondary pump running upon first startup correctly etc.

From what I've been told and what I've read......I should give the car back to the customers and let them drive for a week as much as possible and then bring them back for me to have them inspected.

Is there not a "standard" Ferrari Drive Cycle procedure? Four dealers have told me there was something sent to them that they ignore that basically has them holding their breath while driving with their eyes closed...you get the picture. I've seen manuals published on other manufacturers with step by step procedures. Does anyone have any literature or does anyone have any tricks in rectifying this headache more quickly.

Thanks ahead of time

d

 

That's what we do too....Unfortunately we could not do that on the Euro as it had CEL errors that were at the ECU (electrical connnection) that had to be repaired to even clear the code first hand.

 

Hey James,

I was going to call you on Monday. Thanks for replying. So can I be in parameters view in SD2? Or do you mean nothing can be hooked up?

Both customers want me to drive for them. I'll probably go for a Sunday drive tomorrow in one with Tonya and do your procedure.

Do you have the publication that I can get a fax copy from you? We have the old airport loop that we have to ourselves and can pretty much drive the speeds we need to except for one speed hump (can't go over it more than 20 mph)

The array of ECU's, question, I was told by two Ferrari mechanics "NOT" to swap brains as it would burn the alarm code or something that can not be undone in the ECU?????? Heard anything even remotely about that? Sounds like a wive's tale.

BTW, we added the missing ground (FNA-22) as well and this cleared three readiness codes afterwards on one of the cars.

d

 

That's what SC of FSA told me except didn't say it' different from side to side and not as clearly stated as you have put it, thanks for clarifying. I think Sa tried putting a brain from another car and ran into the snafu....as he was adamant about it in a higher pitched voice.

Like James, I'm very interested in how other techs (on this board) get through this problem as it's very time consuming.

 

James,

I've driven one of these cars myself in an attempt to get the readiness status corrected for 4 days last week. I'd like to get a copy of the drive cycle at least for reference and I've got to give it a shot myself too. I'll go ahead and go out tomorrow, weather permitting. I see a big front is headed in to Texas and the temps are supposed to drop dramatically.

Oregon dealer, Ron Tonkin, told me they have had success using the "Land Rover" drive cycle test. So that's what I tried this last time and got some of them ready.

 

FYI, the updates do not eliminate the need to perform a drive cycle.

Both cars I'm talking about, we performed the Service Campaign to update the missing ground in the OBDII connector. Exhaust camshaft timing variator repair/update will cause you to have to go through a drive cycle before the readiness status is fully satisfied as the battery is usually disconnected as SOP on major engine maintenance. But you'd never know this unless you tried to have it smog tested shortly afterwards.

 

Good idea.

 

Anybody (shops) try the cigarette battery for keeping radio codes etc. for keeping the brains activated while disconnecting the battery? I never thought much of it, but now, may really be a good solution too.

d

 

Hey thanks, appreciate that advise.

Now that makes more sense as I just repaired a malfunctioning brake switch signal that goes to the RH brain. FYI, that's almost identical to the BOSCH RACING MOTRONIC in Group C cars such as the Porsche 962C. I have one of those ECUs back at the "fatherland" for repair currently.

 

I FINALLY got one of the very stubborn 360s to pass OBDII smog state inspection today!!! Getting the readiness status on all emissions stuff is a real treat on these cars. Made my day!

 

We kinda made up our own Drive Cycle using ideas from State of New York published generic OBDII drive cycle, Land Rover's, and just plain creativity and data logging engine paramaters while driving and watching functions real time as well as resetting adaptive/learned functions of the ECU(s) with the SD2. It has taken no less than 10 trips totalling over 120 miles of these drive cycles from stone cold engine starts each time.

I have another car to "get ready" so we will see if it works again. We may have just stumbled into a "ready" state.........but there is no shortcuts found so far.