Nope. My Candi is hooked up all of the time. No reboots.

 

Yes it should. Have you tried to get security access yet? Might be a bad candi.

 

No I haven't done any of that...The Candi was blinking away when I got it powered up with cig lighter. Still think possible bad Candi? Is that the only time the candi is used is when SPS is involved?

 

Check terminals 4 and 16 with a multimeter - maybe you have a damaged wire or a blown fuse... found that on a C5 I tried to Tech 2 a month or so ago.

 

Check terminals 4 and 16 with a multimeter - maybe you have a damaged wire or a blown fuse... found that on a C5 I tried to Tech 2 a month or so ago.

I'll give it shot...although I always run my ELM327 in there and it always work? Anyways I've been looking for the Security access threads and found your GlobalTIS install. I have the software downloaded and I took a Dell D510 out of mothball from work;ol; Will try the security access thing tonight if I have time, for sure by Friday the latest.

 

So after about an hour of messing around I finally have full access. Everything works...powered from odb2...security access...programmed "Lock door and trunk on drive-off" & " Door and Trunk unlock on key out"...very cool;ol;

 

so why was there no power thru obd2?

 

I guess I didn't have it plugged in all the way the first time. The plug is a little snug and I didn't want to force the issue but it is working now as intended. Just realize this morning that "Unlock when key out" only unlock the driver's door? Still very cool nonetheless.

 

I recently did this mod and now my vci self test always fails on GND FET, can anyone verify if this is normal? It passes if I use the original regulator.

 

What voltage did you set the new regulator at?

I set mine to 4.99v


Frank.

 

Tech2 Clone reboot work around

I purchased one of these to gain full access to all sensor outputs on an 08 CTS, particularly the camshaft angles during cold start. I was aware that reboots under the circumstance were a problem and had encountered the Mornsun regulator upgrade recommendation before purchase. I have performed it and the problem was solved.

For those who are still dealing with it, and or don't want to tamper with the unit, the work around is this; An extra battery, I have both a car battery and a small 12 v amp/hr battery. Having read the instructions for the clone I discovered it needs a good ground to the car meaning use of the cigarette lighter for power at the Candi module plug connection, is preferred and in some cases required for successful data viewing. With that in mind I simply connected a good ground wire between the car and the negative terminal of the auxiliary battery powering the unit and succeeded at starting the car without the clone unit rebooting so that I could record the cam angles beginning before startup.

I joined the forum to share that info. Considering I have an Actron Scan Tool that cost more than the clone but can only do about 10% of what the clone does, it was a great buy.

On a different but similar note, I recently started having trouble linking my Actron to my 07 Nissan Versa, I forgot the code which I think started with a "U" and referenced a PCM failure to link up. I also noticed that the ALDL plug might have some connections issues as some times the unit did not power up when plugged in. When I plugged the unit into the cigarette lighter I was able to link up with the vehicle so the lighter socket is something to keep in mind.

I have also read that it is not a good idea to power up the clone with the Candi module attached, but not plugged into a vehicle as someone attributed a module failure to that although I did not save the thread to verify.

 

I purchased one of these to gain full access to all sensor outputs on an 08 CTS, particularly the camshaft angles during cold start. I was aware that reboots under the circumstance were a problem and had encountered the Mornsun regulator upgrade recommendation before purchase. I have performed it and the problem was solved.

For those who are still dealing with it, and or don't want to tamper with the unit, the work around is this; An extra battery, I have both a car battery and a small 12 v amp/hr battery. Having read the instructions for the clone I discovered it needs a good ground to the car meaning use of the cigarette lighter for power at the Candi module plug connection, is preferred and in some cases required for successful data viewing. With that in mind I simply connected a good ground wire between the car and the negative terminal of the auxiliary battery powering the unit and succeeded at starting the car without the clone unit rebooting so that I could record the cam angles beginning before startup.

I joined the forum to share that info. Considering I have an Actron Scan Tool that cost more than the clone but can only do about 10% of what the clone does, it was a great buy.

On a different but similar note, I recently started having trouble linking my Actron to my 07 Nissan Versa, I forgot the code which I think started with a "U" and referenced a PCM failure to link up. I also noticed that the ALDL plug might have some connections issues as some times the unit did not power up when plugged in. When I plugged the unit into the cigarette lighter I was able to link up with the vehicle so the lighter socket is something to keep in mind.

I have also read that it is not a good idea to power up the clone with the Candi module attached, but not plugged into a vehicle as someone attributed a module failure to that although I did not save the thread to verify.

I installed the LM2596 with the transistor and resistors on mine a while ago and it is still resetting. I set it to 5 volts. I am using the power from the obd2 port and i guess i should plug the tech2 into the cigarette lighter plug and try that. My car battery was fully charged and i even tried hooking my lithium jump starter to it. I wonder if i will need a REC10-1205S/H2/M.

 

I can check at the weekend...

 

My dear brother el patron
Many thanks for you and for all your efforts to help all members in this lovely forum
I will wait for your reply , and in advanced i wish to you a very happy weekend bro

Samer

 

yep, I also get the GND FET error. Haven't noticed before, but I will further use the Tech2...
If anybody finds an isolated converter which works down to 7V, please report here!

 

I don`t know how to thank you for every thing , thank you so much for your confirming about the GND FET Error , but i tried to use the scanner and i did not notice any problem caused by this error , and every thing working very good , so i think this error is not a big issue , and it has no effect on our scanner .

and the main important now is that the scanner not restarted any more when the engine off and on again .

my greeting for you and all Germany people .;ol;;ol;;ol;

 

Yes and no. I bought an OBDII extension cable, intercepted the +12v, and inserted the buck-boost converter in the middle. Works perfectly. It was discussed elsewhere on the forum, but I'm not sure where.

The problem with the plan I outlined above is that the Tech 2 prioritizes power from the OBDII port, so if there's power there it ignores all other sources. So, you either gotta cut power from the port entirely, or use it as the source.

A decent dc-dc converter can turn 9v into 12v for an extended period of time. Probably forever. The one in my motorhome turns 14v into 19v for hours at a time. It's not a "buffer" - that's not how they work. 12v@2a or 9v@2.7a is the same on the other side of the converter, and safe for the OBDII power circuit.

 

Yes and no. I bought an OBDII extension cable, intercepted the +12v, and inserted the buck-boost converter in the middle. Works perfectly. It was discussed elsewhere on the forum, but I'm not sure where.

The problem with the plan I outlined above is that the Tech 2 prioritizes power from the OBDII port, so if there's power there it ignores all other sources. So, you either gotta cut power from the port entirely, or use it as the source.

Not sure if that's entirely true about ODB prioritizing. I had power via included adapter directly to battery and worked off of that uninterrupted when unplugging from odb2 to PC for security access and back again.

 

Sure, that works because you're taking power away from the OBDII port and then the DC jack fills in. But if you have both plugged in and crank the engine, the Tech 2 will restart. It's well documented, well discussed. I observed what you observed which is why I thought the converter on the DC jack would work, but I found out what others did... if there's power on the OBDII port, the tech 2 disregards the dc jack. You can get around that by removing the 12v from the OBDII connector, but I didn't want to mess with every car I needed to use the tech 2 on.

Here is one of many threads on the topic:

https://gmtnation.com/forums/threads/fix-tech-2-reboots-if-engine-started.16563/