Rob94hawk

iTrader: (1)

My hawk crapped out today. SES light is on and no one can read the PCM through the port under the dash. Had it tuned at Kaltech and wasn't able to get in touch with anyone there today so I was wondering if it was the norm for tuners to **** block any scanners from reading the SES codes.

gunin4cer

Yes, They do it all the time and now your held hostage....

salemetro

iTrader: (5)

That's a first for me....you're saying that you can't retrieve any dtc's? I've never heard of a tuner locking out the ability to read dtc codes....tune files get locked fairly often though. Usually (but not always) to hide crappy work, from posts I've read elsewhere.

lethal bird

iTrader: (12)

I know of a few that will lock you out.

salemetro

iTrader: (5)

Yep...me too...usually on "exotic" tunes where a lot of work and time was put into the tune. Other than that, most good tuners don't usually worry about it. That's just been my personal experience though.

But are you meaning they lock the ability to retrieve trouble codes?

Urban Legend

iTrader: (5)

Yes but I paid for that work and time.

salemetro

iTrader: (5)

I'm right there with ya,man.......but I can also understand a tuner not wanting to share any "secrets " with other people, should you decide to post your custom tune online somewhere.

edcmat-l1

iTrader: (10)

"Locking" a tune does not prevent you from reading codes, or scanning data. That's a totally different problem.

Locking a tune only prevents you from downloading (reading) the tune, and opening it.

Rob94hawk

iTrader: (1)

That is correct. My mechanic cannot read the pcm via the port under the dash.

Sarg

iTrader: (6)

Never heard of being locked out of trouble codes. Might be something going on with wiring.

keliente

iTrader: (22)

The cigarette lighter fuse is probably blown. Check your fuses. If the DLC isn't getting power then you won't be able to read the codes.

Rob94hawk

iTrader: (1)

I have an LT1 based car. Is the LS1 and LT1 DLC the same?

Scratch that. There's power to the lighter fuse. Damn strange.

jimmyblue

iTrader: (11)

I thought the OBD-I LT1s were PROM cars and only the
OBD-II were read / writable? Didn't OBD-II roll on later
than '94?

edcmat-l1

iTrader: (10)

The 93s were PROM cars. 94, 95 were read/write (EEPROM) but still OBD1, although the 95 had an OBD2 connector. OBD2 became implemented in 96. Kind of a confusing time period it was LOL

2TR

Locking a tune can't block out OBDII scanning. Have you tried a different Vatozone from the original one you requested to scan your car? User error?

edcmat-l1

iTrader: (10)

It's not OBD2, it's OBD1.

01WS6/tamu

iTrader: (37)

The computer died and it lost serial communications with the DLC. Unless there is a blown fuse etc for the PCM preventing it from powering up.