I was in the middle of a callibration write and my laptop died. I now am trying to rewrite and it will not write. Says to check cable and key is in on possition. I really need some help. I searched but can not find anything. Fuses look fine. It scans and pulls the existing tune fine. Car does run. Please help.

 

Help Mah!

 

http://www.hptuners.com/help/




Important

Do not disrupt the programming session.
Do not open vehicle doors or use vehicle accessories.
Do not program vehicles with battery voltage lower than 11.5 Volts
Do not program vehicles while connected to car battery charger.



VCM Recovery

When rewriting using the "Rewrite Entire VCM" or the "Rewrite VCM VIN and CAL" options, critical components of the VCM software must be erased and re-written. If the VCM loses power during writing of these critical system components, the VCM may become unrecoverable. Do not power down the VCM under any circumstances during a write failure using these advanced options.



Rewrite Entire (selected vehicles only)

This is a useful feature for the tuner shop or mail order tuner and doesn't apply much to a single vehicle tuner. What this can allow you to do is program a VCM that came from another vehicle for your specific vehicle type. You must make sure that the VCM hardware matches. This is a very powerful feature and must be used with caution. If you write a VCM with a file that doesn't belong on it, you could damage the VCM and cause it to be unrecoverable. It is not available on for all vehicle types.



Frequent Questions


When should I use "Write VCM" ?
All the time except in the circumstances described in the following sections.
Never use the following methods to recover a VCM that has failed during a normal Write VCM operation.


When should I use "Write Entire" ?
The only time you should use the Entire VCM Write feature is if you are updating the software on the VCM to a new operating system. For example, using a Corvette VCM with electronic throttle in a Firebird that has cable driven throttle body (same VCM hardware, different Operating System).
If you are recovering from a standard VCM Write failure, using the Rewrite Entire feature will not help ensure the recovery of your VCM. In fact, in a failure scenario from a standard VCM Write you are at more risk for total VCM loss when you try to recover using the Rewrite Entire.

When should I use "Rewrite VIN/Tunerlock/VATS" ?
The only times you would need to use this option is if you have updated the VIN of the VCM (via the editor), are relinking the VATS system or are applying the Tunerlock feature to lock or unlock the VCM. Generally these things only need to be done once (and can be done during a "Write Entire" as well).

Note: It is a good idea to try and limit the advanced writes (Entire and VIN/Tunerlock/VATS) to only once. ie. setup the new operating system with all required VIN, Tunerlock and VATS information and then choose "Write Entire" for the first write only. Then use the normal "Write Calibration Only" option for regular tuning.


"Write VCM" failed and now my car won't start, what do I do?
Don't panic. An error during the write process has occurred.
Follow these guidelines:
Make sure vehicle has sufficient battery voltage for programming.
Make sure laptop has sufficient power.
Make sure all communications cables are connected firmly.
DO NOT pull your VCM's fuse or disconnect battery power in attempt to correct the problem.
Restart VCM Editor and open up the same file you wrote to the VCM when the error occurred. It is very important that you use the same file. Try to "Write VCM" again.
If the problem persists please contact customer support using these instructions Contacting Customer Support.
support@hptuners.com

 

I did these and still same problem. I will e-mail. I need an answer quick here.

 

are you using an inverter?

 

Not that time.

 

not what time? are you using it while writing now?

 

No, I was using the outlet to power the PC.

 

Any thoughs?

 

Well it is working all of a sudden. No idea what was going on there. But I am happy it is back up.

 

fortuanetly w/99+ as long as you do calibration write only you're usually going to be safe....

what likely happened was the PCM was stuck where it wouldn't give control back for a reboot, and wouldn't accept any new write commands... after a while it times out and basically resets itself

This is why a calibration write should always be done (unless changing to a different OS) , glad you're up and running!

 

Thanks for the tips. Boy was I happy when it worked yesterday.