Rx2jz Posted August 24, 2023 Report Share Posted August 24, 2023 Followed all the available help on this forum to get my 2 x haltech TC4 boxes working over CAN to no avail.... Still cannot find any CAN devices using the CAN setup " devices " tab... Quote Link to comment Share on other sites More sharing options...
Confused Posted August 24, 2023 Report Share Posted August 24, 2023 The "Find Devices" is only for programming Link CAN Lambda modules, it won't show anything else, so you can forget about this, it's leading you down a rabbit hole. From what I understand, the Haltech products have hard coded CAN streams so they offer "Box A" and "Box B" as separate products. There are TC8 streams provided with PC Link, whether these will work for the TC4s, I'm not sure... There's details in the Help for how to set this up. Quote Link to comment Share on other sites More sharing options...
Rx2jz Posted August 24, 2023 Author Report Share Posted August 24, 2023 14 minutes ago, Confused said: The "Find Devices" is only for programming Link CAN Lambda modules, it won't show anything else, so you can forget about this, it's leading you down a rabbit hole. From what I understand, the Haltech products have hard coded CAN streams so they offer "Box A" and "Box B" as separate products. There are TC8 streams provided with PC Link, whether these will work for the TC4s, I'm not sure... There's details in the Help for how to set this up. Yeah I followed the tc8 streams provided... Still nothing. Thanks for clearing up the finding can devices function Quote Link to comment Share on other sites More sharing options...
Adamw Posted August 24, 2023 Report Share Posted August 24, 2023 Haltech TCA8 CAN wont work with a TC4. Attach your tune, confirm whether you have box a or b and which CAN port it is wired to. Quote Link to comment Share on other sites More sharing options...
Rx2jz Posted August 24, 2023 Author Report Share Posted August 24, 2023 28 minutes ago, Adamw said: Haltech TCA8 CAN wont work with a TC4. Attach your tune, confirm whether you have box a or b and which CAN port it is wired to. i dont know how to attach a link file.. ahh i see... here ya go Adam. cheers Tune with CAN settings.pclr CAN 2 not sure what you mean by A or B box mate. Both Haltech TC4 boxes connected to a Haltech Can Hub. Just done some research. i have 1 x Box A and 1 x Box B Quote Link to comment Share on other sites More sharing options...
Adamw Posted August 24, 2023 Report Share Posted August 24, 2023 I have only personally tested a box A TC2 and a box A TC4, so im making an educated guess for the ID for the box b. TC2 Box A uses 712 & 714. TC4 Box A uses 716 & 718. So I think the most likely for box b is 717 & 719. You map attached is set up that way. The probes connected to box A will be received into the ECU as CAN TC Cyl 1-4. The probes connected to box B will be received into the ECU as CAN TC Cyl 5-8. If the CAN TC Cyl 5-8 runtimes stay at zero then try changing the receive user stream 2 ID to 715. Tune with CAN settings 2.pclr Confused 1 Quote Link to comment Share on other sites More sharing options...
Rx2jz Posted August 24, 2023 Author Report Share Posted August 24, 2023 Thanks Adam. I'll try tomorrow Cheers Quote Link to comment Share on other sites More sharing options...
Rx2jz Posted August 24, 2023 Author Report Share Posted August 24, 2023 11 hours ago, Adamw said: I have only personally tested a box A TC2 and a box A TC4, so im making an educated guess for the ID for the box b. TC2 Box A uses 712 & 714. TC4 Box A uses 716 & 718. So I think the most likely for box b is 717 & 719. You map attached is set up that way. The probes connected to box A will be received into the ECU as CAN TC Cyl 1-4. The probes connected to box B will be received into the ECU as CAN TC Cyl 5-8. If the CAN TC Cyl 5-8 runtimes stay at zero then try changing the receive user stream 2 ID to 715. Tune with CAN settings 2.pclr 163.34 kB · 2 downloads Loaded in the tune mate. Any idea how to check if recieving data. As run times show 0 degrees and log shows 0. Both boxes. Quote Link to comment Share on other sites More sharing options...
Rx2jz Posted August 24, 2023 Author Report Share Posted August 24, 2023 I have some other issue going on as I just checked voltage and both Hi and Lo CAN plug out of the CAN bus and I have 2.41v on both Hi and lo Quote Link to comment Share on other sites More sharing options...
Adamw Posted August 25, 2023 Report Share Posted August 25, 2023 If you are measuring on the ecu then that is expected, the ecu is not outputting any data, just listening. If you are measuring whats coming out of the egt box then you should see different voltages on H/L. Quote Link to comment Share on other sites More sharing options...
Rx2jz Posted August 25, 2023 Author Report Share Posted August 25, 2023 1 minute ago, Adamw said: If you are measuring on the ecu then that is expected, the ecu is not outputting any data, just listening. If you are measuring whats coming out of the egt box then you should see different voltages on H/L. It was from ecu. Thanks Quote Link to comment Share on other sites More sharing options...
Rx2jz Posted August 25, 2023 Author Report Share Posted August 25, 2023 3 hours ago, Adamw said: If you are measuring on the ecu then that is expected, the ecu is not outputting any data, just listening. If you are measuring whats coming out of the egt box then you should see different voltages on H/L. Adam it has something to do with my tyco plug wiring with these stupid haltech boxes. Haltech doesn't explain anything anywhere in how to wire the TC4 I've attached pics of the only wiring diagrams I can find. I bought a plug, and wired only 4 pins. HI Lo positive and ground. The other end is a dtm4 into can hub. Maybe also the problem is i don't have anything plugged into the 4th spot on the can hub. Maybe I need to make a plug with a terminating resistor across hi and low ??? Looking at these diagrams do I have to use 2 wires to lo and 2 wires to Hi or just one from each... I have no idea.. bloody haltech !! Quote Link to comment Share on other sites More sharing options...
Rx2jz Posted August 25, 2023 Author Report Share Posted August 25, 2023 It's showing black plug "wiring" is this digram. Not sure what can terminating loop does.... Quote Link to comment Share on other sites More sharing options...
Rx2jz Posted August 25, 2023 Author Report Share Posted August 25, 2023 here is a 5sec log file TC4 log.llg Quote Link to comment Share on other sites More sharing options...
Adamw Posted August 25, 2023 Report Share Posted August 25, 2023 On the Tyco plug I have always connected CAN L/H to pin 3 & 7, although Im pretty sure 2 & 8 are just connected to the the same internally. You dont need to worry about the termination loop or the empty socket in the hub. For connection to the ecu, just in case you are using a Link CAN cable, be aware the Haltech DTM4 pinout is different to Link. Quote Link to comment Share on other sites More sharing options...
Rx2jz Posted August 25, 2023 Author Report Share Posted August 25, 2023 14 minutes ago, Adamw said: On the Tyco plug I have always connected CAN L/H to pin 3 & 7, although Im pretty sure 2 & 8 are just connected to the the same internally. You dont need to worry about the termination loop or the empty socket in the hub. For connection to the ecu, just in case you are using a Link CAN cable, be aware the Haltech DTM4 pinout is different to Link. I've wired the can2 hi and low out of ECU into the dtm4 plug same as pic 1 minute ago, Rx2jz said: I've wired the can2 hi and low out of ECU into the dtm4 plug same as pic Also I've done hi and low on tyco pins 2 and 7.. I could try 3 and 7 Quote Link to comment Share on other sites More sharing options...
Adamw Posted August 25, 2023 Report Share Posted August 25, 2023 So, if you pull the can l/h wires out of the ecu connector and measure voltage on those (measure to ground) do you see a voltage difference there? Quote Link to comment Share on other sites More sharing options...
Rx2jz Posted August 25, 2023 Author Report Share Posted August 25, 2023 5 minutes ago, Adamw said: So, if you pull the can l/h wires out of the ecu connector and measure voltage on those (measure to ground) do you see a voltage difference there? 11.71v on both.... Something very a miss here... Quote Link to comment Share on other sites More sharing options...
Rx2jz Posted August 26, 2023 Author Report Share Posted August 26, 2023 So without the TC4 boxes plugged into the can network I no longer have 11.7v travelling back to ECU via the can hi and can lo Which sorta suggests I have wired up the black tyco plug wrong. Pic attached Quote Link to comment Share on other sites More sharing options...
Rx2jz Posted August 28, 2023 Author Report Share Posted August 28, 2023 Can anyone help with this ?? I can not work it out..!! I've triple checked wiring / haltech diagrams and now Im all out of ideas . Quote Link to comment Share on other sites More sharing options...
Adamw Posted August 28, 2023 Report Share Posted August 28, 2023 If you've got 12V coming out of your Haltech CAN pins when there is only 12V connected to the boxes then you either have the pinout wrong or there is an internal issue. Neither is much we can help you with, its really going to need advice from Haltech. Quote Link to comment Share on other sites More sharing options...
Rx2jz Posted August 28, 2023 Author Report Share Posted August 28, 2023 9 hours ago, Adamw said: If you've got 12V coming out of your Haltech CAN pins when there is only 12V connected to the boxes then you either have the pinout wrong or there is an internal issue. Neither is much we can help you with, its really going to need advice from Haltech. I agree mate. Something ain't right. I posted my wiring above. I worked the tyco pin exactly how you do it.. I'll plug 1 x TC4 box in at a time today and narrow down which box is the issue Quote Link to comment Share on other sites More sharing options...
DerekAE86 Posted August 28, 2023 Report Share Posted August 28, 2023 Can you post your overall wiring diagram for how you've wired the ecu/egt boxes/hub in relation to the 4 can pins (H/L/12v/Gnd)? How many other devices on the hub, where power is coming from and where it's being supplied to, etc. Quote Link to comment Share on other sites More sharing options...
Rx2jz Posted August 28, 2023 Author Report Share Posted August 28, 2023 11 hours ago, Adamw said: If you've got 12V coming out of your Haltech CAN pins when there is only 12V connected to the boxes then you either have the pinout wrong or there is an internal issue. Neither is much we can help you with, its really going to need advice from Haltech. We have some progress !!! I have readings from box B... Without box A plugged in.... So box A is the issue. But... Box B is showing cyl 1-4 which if I'm correct should be box A stream ... Weird Quote Link to comment Share on other sites More sharing options...
Rx2jz Posted August 28, 2023 Author Report Share Posted August 28, 2023 I've also tried the Can Ids you suggested above also mate. No avail. Def a prob with the box as when it's plugged in the other box no longer works ( as it's prob sending 11.7v down the hi and lo ) Quote Link to comment Share on other sites More sharing options...
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