Bunchy1995 Posted June 6, 2020 Report Share Posted June 6, 2020 Hi All. I am having some trigger issues with my VH45 swapped Nissan Patrol. I am at the stage of setting timing trigger offset, but i am getting errors with the rpm when cranking, when doing so it spikes and i get an RPM limit activated error. I am no longer using the factory CAS disc, i have converted to a AEM 24-1 trigger disc. I have tried trigger filtering but this makes things worse. Anyone got any ideas what could be going wrong. Quote Link to comment Share on other sites More sharing options...
Adamw Posted June 6, 2020 Report Share Posted June 6, 2020 Can you attach the tune and do a triggerscope when its cranking. How to triggerscope: https://1drv.ms/v/s!AiYbYlZQuRHPmidU5V2CmTcv6t2y?e=UlmSwU Quote Link to comment Share on other sites More sharing options...
Bunchy1995 Posted June 7, 2020 Author Report Share Posted June 7, 2020 Hi Adam. As requested, i have attached both my tune pclr file and a log of the triggerscope while cranking. VH45DET Crank_RPM Limit.llg Nissan Patrol GU 98 VH45DE Turbo Fury ECU.pclr Quote Link to comment Share on other sites More sharing options...
Adamw Posted June 7, 2020 Report Share Posted June 7, 2020 You've either got a bad ground or the CAS is dead. The voltage level of the signals should step from about 0V to ~4V, yours is sitting around 1.7V instead of zero. Quote Link to comment Share on other sites More sharing options...
Bunchy1995 Posted July 22, 2020 Author Report Share Posted July 22, 2020 Hi Adam. Thank you for the suggestions, problem is now solved, for some reason the person that wired the harness (names shall not be known) wired the CAS ground to signal ground instead of chassis ground, easy fix. Now rpm under cranking is reading around the 280 rpm mark. Quote Link to comment Share on other sites More sharing options...
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