Tommy Mason Posted April 18, 2021 Share Posted April 18, 2021 When connecting the Nexiq interface, I can see in the "Device Tester" that the interface is reading the modules but, the VMAC software says that it is not connected. I have tried changing the various settings on the interface but when I take it off J 1708, it quits reading the modules and will not do anything. Please help. Quote Link to comment https://www.bigmacktrucks.com/topic/66565-trouble-getting-nexiq-interface-to-connect-to-vmac-program/ Share on other sites More sharing options...
IHfarmboy Posted April 3, 2022 Share Posted April 3, 2022 Tommy Mason, did you ever figure out what the problem was? I just bought a Nexiq link 2 and can't get it to connect to VMAC either. I'm able to use Diesel explorer 2.0 to pull codes and read gauges. Quote Link to comment https://www.bigmacktrucks.com/topic/66565-trouble-getting-nexiq-interface-to-connect-to-vmac-program/#findComment-494329 Share on other sites More sharing options...
JoeH Posted April 3, 2022 Share Posted April 3, 2022 What year and model.are you trying to connect to? There should be a rocker switch to flip from ABS to Diagnostics. You should be set on Diagnostics. And key should be on. On Diesel Explorer there's a "Components" tab, that shows you which computers the Diesel Link sees. If it's a VMAC III you should see listed the EECU, VECU, as well as ABS module if it has one. If one is missing then you could have a power fault in the wiring to the missing ECU. Quote Link to comment https://www.bigmacktrucks.com/topic/66565-trouble-getting-nexiq-interface-to-connect-to-vmac-program/#findComment-494331 Share on other sites More sharing options...
JoeH Posted April 3, 2022 Share Posted April 3, 2022 If it's VMAC III and your check engine light is on you can pull 2 digit "blink codes" by holding the bottom function of the cruise control (I think it's Set/Decel) with the key on. Cruise on/off switch needs to be off to do it. Count the flashes of the lightning bolt and post them here, someone can tell you what they mean. After one code is spat our push the button to request another code. Keep doing it til it starts repeating itself. 1 Quote Link to comment https://www.bigmacktrucks.com/topic/66565-trouble-getting-nexiq-interface-to-connect-to-vmac-program/#findComment-494332 Share on other sites More sharing options...
IHfarmboy Posted April 3, 2022 Share Posted April 3, 2022 It's a 2001 CH truck. When I use Diesel explorer it shows multiple ECU's (engine,ABS, and one or two others). What does the rocker switch look like? I also can run a test connection through Nexiq tester app and can see all ECU's. It's like the nexiq drivers won't communicate with VMAC. I get the prompt seen on the left in the picture, then I click on preferences to choose nexiq but nothing is listed. Quote Link to comment https://www.bigmacktrucks.com/topic/66565-trouble-getting-nexiq-interface-to-connect-to-vmac-program/#findComment-494334 Share on other sites More sharing options...
IHfarmboy Posted April 3, 2022 Share Posted April 3, 2022 Here are the codes diesel explorer gathered. Not sure what code 291 is for. The truck is only making 7psi of boost and feels derated. IMG_2775.HEIC Quote Link to comment https://www.bigmacktrucks.com/topic/66565-trouble-getting-nexiq-interface-to-connect-to-vmac-program/#findComment-494335 Share on other sites More sharing options...
Joey Mack Posted April 3, 2022 Share Posted April 3, 2022 the ABS rocker switch is under the dash, above the brake pedal. it is lit up in 'orange' if you can retreive the 2 digit codes, I can tell you what it is for.. What year/model/ engine series/tranny/? jojo Quote Link to comment https://www.bigmacktrucks.com/topic/66565-trouble-getting-nexiq-interface-to-connect-to-vmac-program/#findComment-494338 Share on other sites More sharing options...
Joey Mack Posted April 3, 2022 Share Posted April 3, 2022 I just looked in my V-MacIII book, and did not find a 291 modifier... jojo Quote Link to comment https://www.bigmacktrucks.com/topic/66565-trouble-getting-nexiq-interface-to-connect-to-vmac-program/#findComment-494339 Share on other sites More sharing options...
Mackpro Posted April 3, 2022 Share Posted April 3, 2022 7 hours ago, IHfarmboy said: It's a 2001 CH truck. When I use Diesel explorer it shows multiple ECU's (engine,ABS, and one or two others). What does the rocker switch look like? I also can run a test connection through Nexiq tester app and can see all ECU's. It's like the nexiq drivers won't communicate with VMAC. I get the prompt seen on the left in the picture, then I click on preferences to choose nexiq but nothing is listed. The old VMAC 3 software is getting harder to run as laptop operating systems are updating so fast now a days. Uninstalled your Nexiq drivers and Go to Nexiq website and download the newest drivers . We had problems running Cummins Insite and the older VMAC 3 program on the same laptop because they both used the Nexiq interface. 1 Quote Link to comment https://www.bigmacktrucks.com/topic/66565-trouble-getting-nexiq-interface-to-connect-to-vmac-program/#findComment-494353 Share on other sites More sharing options...
Joey Mack Posted April 3, 2022 Share Posted April 3, 2022 No doubt MackPro, I remember, continuasly updating PTT, and the few times I used a Nexis box, was just 'ok'.. Ive been away from these systems for a few years, with the exception of setting up PTT for a customer of mine,, however, no one there knows how to use it, or speak english, so all the money he spent for me to renew the system is now gone. Its been over 6 months, so it all needs to be be re-set, passwords and the like.. If these systems arent used regularly, they just go away to a point, then more money has to be spent to get it back.. its sad.. jojo Quote Link to comment https://www.bigmacktrucks.com/topic/66565-trouble-getting-nexiq-interface-to-connect-to-vmac-program/#findComment-494356 Share on other sites More sharing options...
JoeH Posted April 3, 2022 Share Posted April 3, 2022 Can't open the file, can you take a picture of the codes on your screen? Diesel Explorer should be fairly descriptive on what they mean. Quote Link to comment https://www.bigmacktrucks.com/topic/66565-trouble-getting-nexiq-interface-to-connect-to-vmac-program/#findComment-494361 Share on other sites More sharing options...
JoeH Posted April 3, 2022 Share Posted April 3, 2022 9 hours ago, IHfarmboy said: It's a 2001 CH truck. When I use Diesel explorer it shows multiple ECU's (engine,ABS, and one or two others). What does the rocker switch look like? I also can run a test connection through Nexiq tester app and can see all ECU's. It's like the nexiq drivers won't communicate with VMAC. I get the prompt seen on the left in the picture, then I click on preferences to choose nexiq but nothing is listed. Try Mack Default and select whatever USB port # you're plugged in to... Quote Link to comment https://www.bigmacktrucks.com/topic/66565-trouble-getting-nexiq-interface-to-connect-to-vmac-program/#findComment-494362 Share on other sites More sharing options...
IHfarmboy Posted April 3, 2022 Share Posted April 3, 2022 9 hours ago, Joey Mack said: the ABS rocker switch is under the dash, above the brake pedal. it is lit up in 'orange' if you can retreive the 2 digit codes, I can tell you what it is for.. What year/model/ engine series/tranny/? jojo 2001 CH613 E7 with 10sp Eaton I'm getting 4-1 code. Quote Link to comment https://www.bigmacktrucks.com/topic/66565-trouble-getting-nexiq-interface-to-connect-to-vmac-program/#findComment-494371 Share on other sites More sharing options...
IHfarmboy Posted April 3, 2022 Share Posted April 3, 2022 2 hours ago, Mackpro said: The old VMAC 3 software is getting harder to run as laptop operating systems are updating so fast now a days. Uninstalled your Nexiq drivers and Go to Nexiq website and download the newest drivers . We had problems running Cummins Insite and the older VMAC 3 program on the same laptop because they both used the Nexiq interface. I'll try and uninstall Nexiq drivers and see if that makes a difference. I tried uninstalling VMAC but that didn't work. Quote Link to comment https://www.bigmacktrucks.com/topic/66565-trouble-getting-nexiq-interface-to-connect-to-vmac-program/#findComment-494372 Share on other sites More sharing options...
Joey Mack Posted April 3, 2022 Share Posted April 3, 2022 4-1 is the speed sensor in the tranny output shaft.. If it's a screw in type,,, remove it, inspect it, clean it, ohm it out, based on the part number stamped in it.. if you can see the part number, post it,, should start with 64MT... when you screw it back in, go in till it touches then back it off 1 full turn, and ,lock it down.. jojo Quote Link to comment https://www.bigmacktrucks.com/topic/66565-trouble-getting-nexiq-interface-to-connect-to-vmac-program/#findComment-494374 Share on other sites More sharing options...
IHfarmboy Posted April 3, 2022 Share Posted April 3, 2022 1 hour ago, JoeH said: Can't open the file, can you take a picture of the codes on your screen? Diesel Explorer should be fairly descriptive on what they mean. Quote Link to comment https://www.bigmacktrucks.com/topic/66565-trouble-getting-nexiq-interface-to-connect-to-vmac-program/#findComment-494375 Share on other sites More sharing options...
Joey Mack Posted April 4, 2022 Share Posted April 4, 2022 have you just simply looked at the wires on the VSS sensor, and the truck side to see if they are chaffed, or broken, or just not right?? jojo Quote Link to comment https://www.bigmacktrucks.com/topic/66565-trouble-getting-nexiq-interface-to-connect-to-vmac-program/#findComment-494376 Share on other sites More sharing options...
JoeH Posted April 4, 2022 Share Posted April 4, 2022 The first 2 seem minor to me. Need to be fixed, but minor. That 291 perplexes me. "See Diesel Repair"? Is that code for "something mechanical is broken so we're derating"? Pull valve covers maybe to see if there's anything outside of ordinary with your valve train? How's the oil pressure and fuel pressure? Quote Link to comment https://www.bigmacktrucks.com/topic/66565-trouble-getting-nexiq-interface-to-connect-to-vmac-program/#findComment-494397 Share on other sites More sharing options...
Onyx610 Posted April 4, 2022 Share Posted April 4, 2022 Vehicle speed sensor can cause a derate. 1 1 Quote Link to comment https://www.bigmacktrucks.com/topic/66565-trouble-getting-nexiq-interface-to-connect-to-vmac-program/#findComment-494411 Share on other sites More sharing options...
IHfarmboy Posted April 4, 2022 Share Posted April 4, 2022 23 hours ago, Joey Mack said: have you just simply looked at the wires on the VSS sensor, and the truck side to see if they are chaffed, or broken, or just not right?? jojo Yeah they looked fine. I'm getting 12volts down to the VSS sensor. I checked the cam and crank sensor and only getting 0.25 volts to them. Is this correct? The cam sensor tested at 800-900 ohms and the crank was reading 19,000 ohms. We are replacing the crank sensor when it comes in Friday. It was seized into the bell housing and had to break it to get it out. 1 Quote Link to comment https://www.bigmacktrucks.com/topic/66565-trouble-getting-nexiq-interface-to-connect-to-vmac-program/#findComment-494447 Share on other sites More sharing options...
Joey Mack Posted April 5, 2022 Share Posted April 5, 2022 keep doing what you are doing.. these engines will run on one or the other but it needs both to maintain good balance.. Quote Link to comment https://www.bigmacktrucks.com/topic/66565-trouble-getting-nexiq-interface-to-connect-to-vmac-program/#findComment-494452 Share on other sites More sharing options...
IHfarmboy Posted April 9, 2022 Share Posted April 9, 2022 Replaced both crank and speed sensor. The engine is still derated. Was looking on the passenger side and found the harness coming out of the firewall is melted. I'm trying to repair it and see if that fixes it. I still can't get the Nexiq to work with VMAC software. Not happy with only being able to read codes with it. Quote Link to comment https://www.bigmacktrucks.com/topic/66565-trouble-getting-nexiq-interface-to-connect-to-vmac-program/#findComment-494860 Share on other sites More sharing options...
Joey Mack Posted April 9, 2022 Share Posted April 9, 2022 thanks for the update, Definately, fix what you know is broke first... jojo Quote Link to comment https://www.bigmacktrucks.com/topic/66565-trouble-getting-nexiq-interface-to-connect-to-vmac-program/#findComment-494862 Share on other sites More sharing options...
Joey Mack Posted April 9, 2022 Share Posted April 9, 2022 vocom II driver - MHH AUTO - Page 1 mhhauto.com Volvo Premium Tech Tool PTT VCADS 2.8.61 [2021 ... autopartscatalogue.net Volvo VOCOM 88890300 PTT2.03 software Free Download ... This is the system I am familiar with, and Premium Tech Tool.. I have used Nexiq, but never really liked it as much and at times I sucked at it... The Vocomm 88890300 has worked very well.. I do not own this system, but if you have a fleet or just want to get the best you can get without having dealership authority, I beleive this is it.. I hope we see more opinions, especially from the guys that are still at dealerships... jojo Quote Link to comment https://www.bigmacktrucks.com/topic/66565-trouble-getting-nexiq-interface-to-connect-to-vmac-program/#findComment-494866 Share on other sites More sharing options...
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