SkyEyes Posted March 15, 2023 Report Share Posted March 15, 2023 Hello, Searched the forums in hopes that something in the past would help me solve my issue but nothing has yet. I just installed a CAN Lambda in my 944 Turbo. I'm trying to get the Link to see it in the CAN setup window but no matter what I try, I can't get it to populate. I double checked that I am getting switched 12v to the CAN Lambda connector. When powered on, the CAN Hi will read 3.5v and the CAN Low will read 1.9v. I quadruple checked that my mode setting were as directed in the instructions, applied the changes, and stored them to the ECU. I also set lambda 1 from the old AN VOLT 4 to CAN Lambda. I checked in the runtime values window, and it just lists lambda 1 as off, with no errors. Any other paths to a solution would be greatly appreciated! Quote Link to comment Share on other sites More sharing options...
Vaughan Posted March 15, 2023 Report Share Posted March 15, 2023 I'm assuming it is a Link CAN Lambda, attach a copy of your tune please. Quote Link to comment Share on other sites More sharing options...
SkyEyes Posted March 16, 2023 Author Report Share Posted March 16, 2023 46 minutes ago, Vaughan said: I'm assuming it is a Link CAN Lambda, attach a copy of your tune please. My tune file is too large to upload. I have to go to work right now but I'll work on trying to get it posted a different way. Yes I am using a Link CAN-Lambda unit. Please tell me if this worked. https://www.dropbox.com/s/29w140lyskqjlt0/03152023 Rev 1.pclx?dl=0 Quote Link to comment Share on other sites More sharing options...
Vaughan Posted March 16, 2023 Report Share Posted March 16, 2023 Your tune shows CAN bus errors but it also shows a Lambda value. Also note that your Firmware is 5 major versions behind so I would start by updating to the latest PCLink and firmware. Quote Link to comment Share on other sites More sharing options...
SkyEyes Posted March 16, 2023 Author Report Share Posted March 16, 2023 Ok, I have updated to Firmware 6.23.6. I am still unable to find the Link Can Lambda. The Link no longer shows a value for lambda, and am still getting errors when viewing the CAN page in runtime values. Bus Warning and Bus Off are cycling between Ok and ERROR. Quote Link to comment Share on other sites More sharing options...
Adamw Posted March 16, 2023 Report Share Posted March 16, 2023 Is there something else connected to the bus? "Bus off error" means the ecu has disabled the bus as the transmit error has exceeded the max allowed errors. Quote Link to comment Share on other sites More sharing options...
SkyEyes Posted March 16, 2023 Author Report Share Posted March 16, 2023 I do have a CAN gauge also hooked up. I did the install with the CAN lambda at the same time. I'm working with their manufacturer to update its firmware to support aftermarket ECUs (mine came with the wrong FW, so I just need to update it), so it isn't ready yet but it is hooked up. I can remove it from the system, but it is my end point termination resistor. Quote Link to comment Share on other sites More sharing options...
Adamw Posted March 17, 2023 Report Share Posted March 17, 2023 Yeah unplug that gauge, it is likely using a different bitrate. The CAN lambda will usually be fine with only the one end of the bus terminated. If you know the bitrate the gauge is using you can re-program the CAN lambda to match. Quote Link to comment Share on other sites More sharing options...
SkyEyes Posted March 18, 2023 Author Report Share Posted March 18, 2023 On 3/16/2023 at 9:19 PM, Adamw said: Yeah unplug that gauge, it is likely using a different bitrate. The CAN lambda will usually be fine with only the one end of the bus terminated. If you know the bitrate the gauge is using you can re-program the CAN lambda to match. Unfortunately unplugging the gauge didn't change anything. I still cannot find the CAN Lambda when I try and search for it. Could there be some kind of incompatibility between the tune file and firmware? Every time I open the tune I get a box that tells me some features aren't available (nothing related to my CAN issue) because the file is too old. I just updated the firmware a few days ago. The previous version was from 2021 (don't remember the exact software version number). Quote Link to comment Share on other sites More sharing options...
Adamw Posted March 19, 2023 Report Share Posted March 19, 2023 Are you still getting CAN errors? If you leave the ign switch on for 5 minutes, is the sensor getting hot? 13 hours ago, SkyEyes said: Every time I open the tune I get a box that tells me some features aren't available (nothing related to my CAN issue) because the file is too old. I just updated the firmware a few days ago. The only message I can think of that reads similar to that is related to the new gear shift control function, that message would suggest you dont have recent firmware though. Can you give us a pic of the message and go to >help>ecu information and tell us what firmware version it has. Not related to your lambda issue but still something to confirm. Quote Link to comment Share on other sites More sharing options...
SkyEyes Posted March 19, 2023 Author Report Share Posted March 19, 2023 40 minutes ago, Adamw said: Are you still getting CAN errors? If you leave the ign switch on for 5 minutes, is the sensor getting hot? The only message I can think of that reads similar to that is related to the new gear shift control function, that message would suggest you dont have recent firmware though. Can you give us a pic of the message and go to >help>ecu information and tell us what firmware version it has. Not related to your lambda issue but still something to confirm. This is the warning box. According to the ECU, I have 6.23.6 firmware installed (I updated from 6.18.11). I just installed the newest version of PCLink on my new laptop, and updated my ECU from that. I wasn't sure if that warning was popping up because the tune file was made in an older version of PCLink? As far as sensor warm-up, I'll try to verify that ASAP. I'm assuming you want me to check Lambda 1 Temperature under ECU status? Quote Link to comment Share on other sites More sharing options...
Adamw Posted March 19, 2023 Report Share Posted March 19, 2023 16 minutes ago, SkyEyes said: This is the warning box. According to the ECU, I have 6.23.6 firmware installed. I just installed the newest version of PCLink on my new laptop, and updated my ECU from that. I wasn't sure if that warning was popping up because the tune file was made in an older version of PCLink? You shouldnt get that message if you are connecting o an ecu with current firmware or a map from one. You would only get that message if you are opening an old map or an ecu with old firmware. 17 minutes ago, SkyEyes said: As far as sensor warm-up, I'll try to verify that ASAP. I'm assuming you want me to check Lambda 1 Temperature under ECU status? No, put your hand on the sensor. The ecu isn't going to tell you anything if you dont have coms. Quote Link to comment Share on other sites More sharing options...
SkyEyes Posted March 19, 2023 Author Report Share Posted March 19, 2023 7 minutes ago, Adamw said: You shouldnt get that message if you are connecting o an ecu with current firmware or a map from one. You would only get that message if you are opening an old map or an ecu with old firmware. No, put your hand on the sensor. The ecu isn't going to tell you anything if you dont have coms. Ok, then my issue is that I'm opening an old map. I'll copy everything over to a new map tomorrow, as well as get the car on stands and check if the sensor is heating. Quote Link to comment Share on other sites More sharing options...
Adamw Posted March 19, 2023 Report Share Posted March 19, 2023 You don’t need to copy anything. If you specifically want to use that old map then just load it into the ecu and it will be updated. Otherwise if the same map is already in the ecu then just save a fresh copy. The map will only show the functions that existed in the ecu that it came out of. Quote Link to comment Share on other sites More sharing options...
SkyEyes Posted March 19, 2023 Author Report Share Posted March 19, 2023 9 hours ago, Adamw said: You don’t need to copy anything. If you specifically want to use that old map then just load it into the ecu and it will be updated. Otherwise if the same map is already in the ecu then just save a fresh copy. The map will only show the functions that existed in the ecu that it came out of. I resaved the file, no longer getting the dialogue box. Double verified that I am running 6.23.6 Oxygen Sensor is heating. Still no luck finding the CAN Lambda, so I'm guessing the issue is communication. I'll doublecheck all my wires here in a bit to make sure everything is where it needs to be. Quote Link to comment Share on other sites More sharing options...
Adamw Posted March 19, 2023 Report Share Posted March 19, 2023 The sensor will only heat as a safety if it is not receiving any CAN. If it had CAN it will not heat until the ecu tells it to after the engine is running. If you have made the connection cable yourself, check that the pins in the DTM connector are pushed all the way home and locked in the barbs. Confirm CAN H is on pin 4 and low is on pin 3. Quote Link to comment Share on other sites More sharing options...
SkyEyes Posted March 20, 2023 Author Report Share Posted March 20, 2023 Thanks! The harness I made had the Can H and Can L wires incorrectly pinned. Found, fixed, and all good. I had high going to green, because the gauge I bought has green as H and white as L. Quote Link to comment Share on other sites More sharing options...
SkyEyes Posted March 20, 2023 Author Report Share Posted March 20, 2023 Is it common to have noise on CAN devices? I noticed that my CAN Gauge is showing fluctuations between -50C all the way up to +900C. I currently have it set to 20Hz, and it was less severe at a lower rate (10Hz and 5Hz) but I don't know if having it set that low will be bad or not. Quote Link to comment Share on other sites More sharing options...
Adamw Posted March 20, 2023 Report Share Posted March 20, 2023 3 hours ago, SkyEyes said: Is it common to have noise on CAN devices? I noticed that my CAN Gauge is showing fluctuations between -50C all the way up to +900C. No it should read exactly what it is being sent. How are you sending the data?, it sounds like possibly it has not locked on to the correct frame in a compound message. Quote Link to comment Share on other sites More sharing options...
SkyEyes Posted March 20, 2023 Author Report Share Posted March 20, 2023 32 minutes ago, Adamw said: No it should read exactly what it is being sent. How are you sending the data?, it sounds like possibly it has not locked on to the correct frame in a compound message. I set it up as a generic dash per their instructions at 1Mb/s at 20hz. Physically I tee'd off the CAN Lambda for wiring. The gauge is a Banks iDash https://bankspower.com/collections/idash-digital-monitor?gclid=CjwKCAjwiOCgBhAgEiwAjv5whHx3ErinbKuq0fjGa8WL6vey2Yc8rhBHleuY_GKRwnixZxtd_zsWfRoCe1wQAvD_BwE Quote Link to comment Share on other sites More sharing options...
Adamw Posted March 20, 2023 Report Share Posted March 20, 2023 Can you attach a fresh copy of your map, Ill take a quick look at your settings to confirm but it sounds like the gauge isn't interpreting the data stream correctly. Quote Link to comment Share on other sites More sharing options...
SkyEyes Posted March 20, 2023 Author Report Share Posted March 20, 2023 Hopefully this works https://www.dropbox.com/s/p4zo4sk9xy9s419/03152023 Rev 3.pclx?dl=0 Quote Link to comment Share on other sites More sharing options...
Adamw Posted March 20, 2023 Report Share Posted March 20, 2023 The only thing I would try is turning off the OBD as well. It shouldn't make any difference if no device is requesting OBD2 data but possibly their gauge is at the same time. But if that doesnt solve it I suspect they have something wrong with their code and you will have to discuss with them. I can give you a CAN log of some example generic dash stream data if they want something to test with. Quote Link to comment Share on other sites More sharing options...
SkyEyes Posted March 20, 2023 Author Report Share Posted March 20, 2023 3 minutes ago, Adamw said: The only thing I would try is turning off the OBD as well. It shouldn't make any difference if no device is requesting OBD2 data but possibly their gauge is at the same time. But if that doesnt solve it I suspect they have something wrong with their code and you will have to discuss with them. I can give you a CAN log of some example generic dash stream data if they want something to test with. Thanks but it would be a waste. They recently stopped supporting aftermarket ECUs, and I didn’t find that out until I bought their gauge and then tried to get it working. That is what drove the firmware update I had to do (more like a reversion back to support my Link) I’m thinking I’m going to end up going with a Link CAN gauge here soon but this one will get me rolling again. In the mean time I’ll deselect OBD. Love all the help from you guys on this forum! Quote Link to comment Share on other sites More sharing options...
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