VT-VX Clusters

Post by **Tazzi** » Wed Mar 13, 2013 9:31 pm

madmn wrote:I guess i'm going to have to give this a go but, in the mean time since i don't have a VT cluster, can someone short the resonator crystal and then try to write to the eeprom without powering the cluster it self.

i think this maybe be the cause of the timing issues

Care to point me in the right direction of the crystal?

madmn · Post by **madmn** » Thu Mar 14, 2013 2:47 pm

what's happened to all to board pics of the VT clusters!! i can't find any

it's usually silver and not too far from the MCU, it has 2 pins

kody · Post by **kody** » Fri Mar 15, 2013 12:07 am

Page 13?? I am more than happy to give it a crack if I know what to look for

madmn · Post by **madmn** » Fri Mar 15, 2013 10:32 am

thanks , it's just under the socket

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VX L67 Getrag · Post by **VX L67 Getrag** » Fri Mar 15, 2013 11:07 am

Not sure if the other guys know, but what needs to be done to short the resonator crystal?

Post by **Holden202T** » Fri Mar 15, 2013 12:51 pm

just joint the two pins of it.

hopefully its off the PCB a bit and you can probably get some tie wire around the bottom of it to link to two ?

Post by **Tazzi** » Wed Mar 20, 2013 5:14 pm

madmn wrote:what's happened to all to board pics of the VT clusters!! i can't find any

it's usually silver and not too far from the MCU, it has 2 pins

*Edit,

Never mind, turned out to be a dodgy connection in cable

madmn · Post by **madmn** » Tue Apr 02, 2013 8:03 pm

so no one has had any success ? i've got one on its way

anyway my test bench is fully working just plug in a VT VX and program with a Tech2

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Post by **Tazzi** » Tue Apr 02, 2013 10:55 pm

Well went to attempt, then thought I broke the cluster since could no longer communicate over comms! So still am to crack open the cluster again to try out. Although I dont think thatll be enough, could just be the limitation of the programmers were using.

Remember reading in the VS programming thread that noone could read/write on board. Although there is one bloke who can.. but is using the top of the line programmer at $500+... will see if I cant find that post and what it was.

Your test bench is looking alright! Least its plug and play. Iv directly soldered onto the pins due to a lack of any floppy cables lying around.

What was the go with programming the nec chip, does it end up writing over other data such as the speedo/tacho or was that just because of connection errors or limited amount of times to manually write info back?
Tech2 has an option to "reset to factory" settings somewhere in there from memory so worse comes to worse just click that and let it work its magic. Think it does a complete eeprom rewrite

*Edit
Galep-4 is the programmer. At $400 usd.. Id expect it to read/write everything on board. Has a bigger brother too, the Galep-5D which can cost up to $2K depending on the options

madmn · Post by **madmn** » Wed Apr 03, 2013 7:52 pm

the NEC programmer does work as long as you do what it was to do, correct the ODO, lifting the pins require clean soldered connections and then back to the MCU

no multiple reads or write as it will corrupt the software, but it also has the ability to flash the eeprom

the original is saved on the correction,you can use to restore it

there is no factory reset on the tech2, these MCU are custom produced and preloaded with the software version and then customized

VT-VX Clusters

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