VEMS Community Forum
Technical => Triggering => Topic started by: Kamuto on October 31, 2015, 02:29:08 pm
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hello, my friend is trying to start his car with vems + loom adapter, he get's rpm, but can't start it.. can someone take a look at the trigger log, is it right for that nissan engine?
(http://s24.postimg.org/qdzq5szrl/Untitled.jpg) (http://postimg.org/image/qdzq5szrl/)
this is standart trigger settings from vems menu. 4 window to primary trigger 360 sec trigger, not sure is this correct when it does not shows any sec trigger
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That's backwards. On the Nissan engines, the 360 window trigger is the primary and the 4 window is the secondary. There's actually configlets for the Nissan engines in the primary trigger setup window (at the bottom of the window).
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That's backwards. On the Nissan engines, the 360 window trigger is the primary and the 4 window is the secondary. There's actually configlets for the Nissan engines in the primary trigger setup window (at the bottom of the window).
thank you :D that's our mistake :) yes, I used that configlet, just could not find info on nissans page :)
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sadly nope, I was not wrong,
http://www.vems.hu/wiki/index.php?page=MembersPage%2FFeroNissanTrigger
with 360 connected to primary I'm getting 20000rpm on cranking :)
could it be firmware?
or could it be c103? it's standart at this moment :)
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Hello Kamuto,
Connect and setup your Nissan trigger as follows:
- primary trigger goes to the x cyl number window HALL (in your case 4cyl = 4 window).
- secondary trigger goes to the 360 tooth.
- verify window sync size, this is done as follows:
- forcing the ecu in safe mode, easiest todo by changing the prohibit low byte from (xx which is last two number of firmware version) to some other number.
- make a triggerlog cranking the engine 8-10 seconds
- your triggerlog will have both primary and secondary pulses logged (sectrig only inside the primtooth window). As an example here is a picture of one i made during some testing: http://vems.hu/dave/nissan_360_16-12-8-4_syncup_good.png
- take notes of the window sizes, Nissan trigger will sync to the longest window; for example if you Nissan trigger windows are 8-2-2-2 than we need to sync to 8sectrig window -> sectrig ignore should be set to 5-6.
- make sure to put your prohibit low byte back to the previous value to revert the safe mode.
- after window length verifcation and correct configuration make another triggerlog to verify all is well
If you have any further questions are problem starting after that, please make a sharing report containing both triggerlogs (safe mode with prim and sectrig), triggerlog after longest window calibration and a short vemslog of the cranking sequence. I'll review and come back to you with my findings.
Best regards, Dave
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worked a bit on it today, on safe mode it seems 16-4-8-12 sequence, trigger log looks like yours, sec ignore set to 14 now, the guy got timing light, and we will try to play with it tomorow :)
(http://s10.postimg.org/fbmvuxh5h/cranking.png) (http://postimg.org/image/fbmvuxh5h/)
(http://s10.postimg.org/s4azuusr9/safe.png) (http://postimg.org/image/s4azuusr9/)
(http://s10.postimg.org/b521flhjp/safe_mode.png) (http://postimg.org/image/b521flhjp/)
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engine was started today by the owner ;)
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engine was started today by the owner ;)
Perfect news, thanks for the update!
Best regards, Dave
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Hi Dave,
I have also a problem with a CA18DET engine to start up with the VEMS . Could please give me some advise about the problem ?
Only difference that the engine has currently a wasted spark igntion system .
Ecu is HALL / HALL , and ordered for Nissan 360 trigger .
First as You advise I set the Ecu to safe mode and made a trigger log and check the Nissan Count . Check the window lenght and the Nissan count "gauge" both came up to 15 !
Picture attached about the procces .
(http://www.kepfeltoltes.eu/images/2021/05/07/412safe_mode_trigger_log.png) (http://www.kepfeltoltes.eu/view.php?filename=412safe_mode_trigger_log.png)
(http://www.kepfeltoltes.eu/images/2021/05/07/485nissa_count_safe_mode_tn.jpg) (http://www.kepfeltoltes.eu/view.php?filename=485nissa_count_safe_mode.png)
Than put this number to "ignore sec trig pulses above" , but with number 15 - Ecu set back to normal mode - no more igniton ! With number 14, 13 ,12 works the ignition .
Trigger log also attached with number 14 in normal mode .
(http://www.kepfeltoltes.eu/images/2021/05/07/435nissan_trigger_log_nor_tn.jpg) (http://www.kepfeltoltes.eu/view.php?filename=435nissan_trigger_log_nor.png)
So i move with number 14 there for a try . Check the TDC with a timing light , endede at 110 degre .
I still could not start up the car .
Config file attached :
https://files.fm/u/jgv3z6dkg (https://files.fm/u/jgv3z6dkg)
Thank You to check it !