evo5guy Posted August 17, 2023 Report Share Posted August 17, 2023 Hey everyone was hoping someone here can guide me in the right direction. I just switched for a link G4+ to a G4x with a new motor setup and will be getting a tune soon but first I need to figure out why the new ecu wont read my wideband. its wired the exact same way as before but I keep getting a Lambda 1 Signal error and a AV volt 2 below error low value. An volt 2 is where i have the wideband setup for any help would be appreciated Quote Link to comment Share on other sites More sharing options...
Vaughan Posted August 17, 2023 Report Share Posted August 17, 2023 What model wideband controller, can you attach a copy of your tune and a log Quote Link to comment Share on other sites More sharing options...
evo5guy Posted August 17, 2023 Author Report Share Posted August 17, 2023 5 minutes ago, Vaughan said: What model wideband controller, can you attach a copy of your tune and a log Aem 30-4100 Wideband. i can and a log bit car is not tuned yet waiting to get the ecu to read signal Quote Link to comment Share on other sites More sharing options...
Vaughan Posted August 17, 2023 Report Share Posted August 17, 2023 log is so I can see what voltage is being received, base map so I can make sure you've set up the lambda input correctly Quote Link to comment Share on other sites More sharing options...
evo5guy Posted August 17, 2023 Author Report Share Posted August 17, 2023 20 minutes ago, Vaughan said: log is so I can see what voltage is being received, base map so I can make sure you've set up the lambda input correctly will do, ill get one first thing in the morning Quote Link to comment Share on other sites More sharing options...
evo5guy Posted August 17, 2023 Author Report Share Posted August 17, 2023 2 hours ago, Vaughan said: log is so I can see what voltage is being received, base map so I can make sure you've set up the lambda input correctly here is the current map off the ecu ill try and start it up tomorrow and get you a log Lambda Error.pclx Quote Link to comment Share on other sites More sharing options...
DerekAE86 Posted August 17, 2023 Report Share Posted August 17, 2023 Your Lambda Cal isn't configured. Here, load this.evo5guy-FixedLambda.pclx Also looking at your tune file quickly. Your deadtimes look wrong because they increase after 16v. And since youre running modelled fueling you probably want to turn off IAT fuel correction. Your RPM limit tanks to 1000rpm at 130deg as well which would be a rude shock if you ever got that hot. koracing and evo5guy 2 Quote Link to comment Share on other sites More sharing options...
evo5guy Posted August 17, 2023 Author Report Share Posted August 17, 2023 6 hours ago, DerekAE86 said: Your Lambda Cal isn't configured. Here, load this.evo5guy-FixedLambda.pclx Also looking at your tune file quickly. Your deadtimes look wrong because they increase after 16v. And since youre running modelled fueling you probably want to turn off IAT fuel correction. Your RPM limit tanks to 1000rpm at 130deg as well which would be a rude shock if you ever got that hot. ill try the table out and see if that was the issue. Quote Link to comment Share on other sites More sharing options...
evo5guy Posted August 21, 2023 Author Report Share Posted August 21, 2023 On 8/16/2023 at 10:13 PM, Vaughan said: log is so I can see what voltage is being received, base map so I can make sure you've set up the lambda input correctly sorry its been a couple days was just redoing some wiring to the ecu. 1st map.pclx PC Datalog - 2023-08-21 11;39;51 am.llgx Quote Link to comment Share on other sites More sharing options...
Vaughan Posted August 21, 2023 Report Share Posted August 21, 2023 You have Lambda 1 set up on An Volt 7 but the voltage on An Volt 7 is down at 0.2-0.3V for the entire log which would indicate that input is floating. Do you have a wiring diagram for your wideband controller, does it have a reference ground pin that needs to be wired to the ECU ground and did you connect this? Also I can see that the voltage on An Volt 6 is changing but it isn't setup as anything in the ECU, have you accidentally wired the Lambda signal up to An Volt 6 instead of 7? Quote Link to comment Share on other sites More sharing options...
DerekAE86 Posted August 21, 2023 Report Share Posted August 21, 2023 5 minutes ago, Vaughan said: Do you have a wiring diagram for your wideband controller, does it have a reference ground pin that needs to be wired to the ECU ground and did you connect this? Unfortunately the AEM 30-4100 has no dedicated sensor ground wire Vaughan 1 Quote Link to comment Share on other sites More sharing options...
evo5guy Posted August 21, 2023 Author Report Share Posted August 21, 2023 10 minutes ago, Vaughan said: You have Lambda 1 set up on An Volt 7 but the voltage on An Volt 7 is down at 0.2-0.3V for the entire log which would indicate that input is floating. Do you have a wiring diagram for your wideband controller, does it have a reference ground pin that needs to be wired to the ECU ground and did you connect this? Also I can see that the voltage on An Volt 6 is changing but it isn't setup as anything in the ECU, have you accidentally wired the Lambda signal up to An Volt 6 instead of 7? I just have it wired up to an expansion loom. I’ll double check on which volt I had it rewired to and go from there. As for the ground on the aem wiring diagram it just says black cable to chassis ground should I have it wired up to the loom? Quote Link to comment Share on other sites More sharing options...
Vaughan Posted August 21, 2023 Report Share Posted August 21, 2023 4 minutes ago, evo5guy said: I just have it wired up to an expansion loom. I’ll double check on which volt I had it rewired to and go from there. As for the ground on the aem wiring diagram it just says black cable to chassis ground should I have it wired up to the loom? That looks like an older style one so just the one ground to chassis is fine, newer ones have a chassis ground and a reference ground. You may find that the value in the ECU doesn't always match the value on the gauge due to the lack of a reference ground wire. Quote Link to comment Share on other sites More sharing options...
evo5guy Posted August 21, 2023 Author Report Share Posted August 21, 2023 6 minutes ago, Vaughan said: That looks like an older style one so just the one ground to chassis is fine, newer ones have a chassis ground and a reference ground. You may find that the value in the ECU doesn't always match the value on the gauge due to the lack of a reference ground wire. I see so would it just be better to go out and get a x series and wire that up? Quote Link to comment Share on other sites More sharing options...
Vaughan Posted August 21, 2023 Report Share Posted August 21, 2023 50 minutes ago, evo5guy said: I see so would it just be better to go out and get a x series and wire that up? Best is always CAN which an X series does have. Quote Link to comment Share on other sites More sharing options...
DerekAE86 Posted August 21, 2023 Report Share Posted August 21, 2023 2 hours ago, evo5guy said: I see so would it just be better to go out and get a x series and wire that up? I sold mine to some poor unsuspecting soul and bought a Link CAN Lambda and a 52m GaugeART CAN gauge to fill the hole. Now I can display heaps of other parameters instead of just the AFR readout. Confused and evo5guy 2 Quote Link to comment Share on other sites More sharing options...
evo5guy Posted August 22, 2023 Author Report Share Posted August 22, 2023 44 minutes ago, DerekAE86 said: I sold mine to some poor unsuspecting soul and bought a Link CAN Lambda and a 52m GaugeART CAN gauge to fill the hole. Now I can display heaps of other parameters instead of just the AFR readout. I was thinking of doing that over the winter. For now I just wanna drive it and break in all the new parts Quote Link to comment Share on other sites More sharing options...
DerekAE86 Posted August 22, 2023 Report Share Posted August 22, 2023 Just be mindful that the older AEM gauge itself will display the accurate reading from the sensor, but the information the ECU receives from the gauge will be different (even day to day) because of the lack of the dedicated sensor ground reference. So it makes it useless as a tuning aid. All it's good for is to glance at the gauge and feel comfortable that you're in a good AFR range. Quote Link to comment Share on other sites More sharing options...
evo5guy Posted August 22, 2023 Author Report Share Posted August 22, 2023 2 hours ago, DerekAE86 said: Just be mindful that the older AEM gauge itself will display the accurate reading from the sensor, but the information the ECU receives from the gauge will be different (even day to day) because of the lack of the dedicated sensor ground reference. So it makes it useless as a tuning aid. All it's good for is to glance at the gauge and feel comfortable that you're in a good AFR range. sounds good thanks for all your help. ill slap in a x series wideband for now and look into the link can lambda over the winter Quote Link to comment Share on other sites More sharing options...
evo5guy Posted August 22, 2023 Author Report Share Posted August 22, 2023 20 hours ago, Vaughan said: Best is always CAN which an X series does have. Hey so I got a x series wideband and I’m looking at the CAN connector but there’s a couple different options how would I determine which one to get? Quote Link to comment Share on other sites More sharing options...
Vaughan Posted August 22, 2023 Report Share Posted August 22, 2023 1 hour ago, evo5guy said: Hey so I got a x series wideband and I’m looking at the CAN connector but there’s a couple different options how would I determine which one to get? Do you mean CAN connectors for connecting to the ECU? I'm going to assume you have an Evo 4-8 plugin ECU and so you will have two 5 pin white plugs, one for CAN1 and the other for CAN2, either can be used. Cables that plug into them are https://dealers.linkecu.com/CANPCB_2 or https://dealers.linkecu.com/ADA_2, I would probably recommend going with the Deutsch connector one. evo5guy 1 Quote Link to comment Share on other sites More sharing options...
evo5guy Posted August 22, 2023 Author Report Share Posted August 22, 2023 1 hour ago, Vaughan said: Do you mean CAN connectors for connecting to the ECU? I'm going to assume you have an Evo 4-8 plugin ECU and so you will have two 5 pin white plugs, one for CAN1 and the other for CAN2, either can be used. Cables that plug into them are https://dealers.linkecu.com/CANPCB_2 or https://dealers.linkecu.com/ADA_2, I would probably recommend going with the Deutsch connector one. Thank you so much for your help. That’s exactly what I needed Vaughan 1 Quote Link to comment Share on other sites More sharing options...
evo5guy Posted August 24, 2023 Author Report Share Posted August 24, 2023 On 8/21/2023 at 3:25 PM, Vaughan said: You have Lambda 1 set up on An Volt 7 but the voltage on An Volt 7 is down at 0.2-0.3V for the entire log which would indicate that input is floating. Do you have a wiring diagram for your wideband controller, does it have a reference ground pin that needs to be wired to the ECU ground and did you connect this? Also I can see that the voltage on An Volt 6 is changing but it isn't setup as anything in the ECU, have you accidentally wired the Lambda signal up to An Volt 6 instead of 7? Hey sorry for all the questions, I installed the X series wideband last night and it was still throwing Lambda 1 Signal error and a AV volt 6 below error low value. I've checked the wiring 3 times and everything seems fine would this possibly a calibration issue? i also just wired it up to the expansion loom for the time being. Quote Link to comment Share on other sites More sharing options...
Vaughan Posted August 24, 2023 Report Share Posted August 24, 2023 Have you changed the Lambda 1 Lambda sensor control from An Volt 6 to Link CAN? Have you set up a receive stream for the AEM gauge in the CAN setup window? If you attach a copy of your tune I can probably change those settings Quote Link to comment Share on other sites More sharing options...
evo5guy Posted August 24, 2023 Author Report Share Posted August 24, 2023 17 minutes ago, Vaughan said: Have you changed the Lambda 1 Lambda sensor control from An Volt 6 to Link CAN? Have you set up a receive stream for the AEM gauge in the CAN setup window? If you attach a copy of your tune I can probably change those settings I didn’t wire it up using the CAN connection it’s still on the expansion loom using AN volt 6. I can upload the map with a log file Quote Link to comment Share on other sites More sharing options...
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