Jump to content

V88 CAN Update


Recommended Posts

I have a V88 serial number 7826 that I understand needs an update to use the CAN feature.  Is this something that is a user mod or does it need to be sent to ViPec / Link or a Dealer.?  

If it needs to go to a dealer, is there someone in or around Calgary, Canada that can do it, I would rather not send the ECU internationally.

Link to post
Share on other sites

I dont know of any dealer in that area that would be capable but it is a relatively simple procedure for someone familiar with SMT soldering.  It would be a 10minute job for an electronics guy if you have a local TV repair guy or similar.  I can email you instructions later.  Also note it is a free of charge service if it comes back to us, you just need to look after shipping both ways.

Link to post
Share on other sites
  • 2 years later...

I know this is a bit old, but I've also got a V88 that needs the CAN update and wouldn't mind getting the instructions to update it.  My only other option at this point is ditch the V88 for something that does CAN as I need to talk to a TCU.  :(  

Is getting the instructions emailed still an option?

Link to post
Share on other sites

Yes, I can give you instructions.  However, before we go that far, be aware the CAN is very basic in these old ecu's, you cant configure much of the format - for instance all channels will be sent as full 16bit values, always Intel format, you cant change any scaling or how the data is fitted into the frame.  

What TCU do you have, and is its CAN configuration very flexible?  

Link to post
Share on other sites
23 hours ago, Adamw said:

Yes, I can give you instructions.  However, before we go that far, be aware the CAN is very basic in these old ecu's, you cant configure much of the format - for instance all channels will be sent as full 16bit values, always Intel format, you cant change any scaling or how the data is fitted into the frame.  

What TCU do you have, and is its CAN configuration very flexible?  

Thanks for the response.   I'm using a PCS TCM2800.  It's CAN configuration is mildly flexible but seems to be mostly related to output.  I think it just expects J1939 messages for input to get TPS, RPM, ECT and MAP.  Getting the two talking via CAN was basically my cheap option to solving my problem.

I've been trying to set up the TCU to piggyback on the TPS signal but it's a finicky 2JZ VVTi E-Throttle and doing so seems to make the main/sub voltage differential unstable and the e-throttle keeps shutting off randomly.  Without the TPS hooked in things work fine, but of course the TCU won't function without TPS.  I figured using CAN to get TPS would be a clever solution.

I'm starting to think upgrading to a G4X XtremeX is the only way I'm going to get this to work. :(  I just loaded up PCLink and had a poke around and really do like the CAN stream configuration flexibility, which you are right, would probably get this working regardless of the TCU capabilities.  But you know..... money...  :( Decisions....decisions.....  lol. 

Link to post
Share on other sites
6 hours ago, JAZ-013 said:

I've been trying to set up the TCU to piggyback on the TPS signal but it's a finicky 2JZ VVTi E-Throttle and doing so seems to make the main/sub voltage differential unstable and the e-throttle keeps shutting off randomly.  Without the TPS hooked in things work fine, but of course the TCU won't function without TPS.  I figured using CAN to get TPS would be a clever solution.

Looking through some of the PCS documentation it seems it is common to use pedal position instead of TPS. Have you tried splicing in to the pedal signal?  Otherwise you could probably use a GP PWM aux output with a low pass filter to generate an analog TPS signal to connect to the TCU.

 

6 hours ago, JAZ-013 said:

I think it just expects J1939 messages for input to get TPS, RPM, ECT and MAP.  Getting the two talking via CAN was basically my cheap option to solving my problem.

Unfortunately J1939 uses 29bit ID's and motorolla format so the V88 isnt going to be able to do that.  

Link to post
Share on other sites
51 minutes ago, Adamw said:

Looking through some of the PCS documentation it seems it is common to use pedal position instead of TPS. Have you tried splicing in to the pedal signal?  Otherwise you could probably use a GP PWM aux output with a low pass filter to generate an analog TPS signal to connect to the TCU.

 

Unfortunately J1939 uses 29bit ID's and motorolla format so the V88 isnt going to be able to do that.  

Wow, thanks for the response.  I'll try the FPS first, but the GP PWM Output is a great idea and shouldn't be too difficult for me to Macgyver a simple low-pass filter.

That being said, after installing PC Link and having a poke around, I've got my heart set on a G4X now as it will give me back traction control, throttle blip, and some other cool stuff.  If I get one and CAN still ends up being my best option, can you see any reason why the G4X wouldn't be able to output frames the TCU can understand?

Link to post
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

Loading...
×
×
  • Create New...