Looks like the challenge here would be not hardware but making automatic transmission CAN-happy?
https://github.com/jackm/carhack/blob/master/nissan.md has too little and my 2014 messages do not match any of the three sources of Nissan CAN data. Also TIL "DBC file" maybe one day rusEFI would read DBC files from SD card
Why not dual wideband? These engines have two upstream O2 sensors.
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Fair point issue created
Re: Hellen 121 Nissan hellen121nissan
Posted: Wed May 19, 2021 6:23 am
by mck1117
Which means we need some way to set index when we have multiple controllers permanently connected. The current index set mechanism requires disconnection of all the controllers whose index you don't want to set.
Re: Hellen 121 Nissan hellen121nissan
Posted: Thu May 20, 2021 10:14 pm
by AndreyB
Also first Hellen board with dual WBO
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Re: Hellen 121 Nissan hellen121nissan
Posted: Wed Jun 30, 2021 9:09 pm
by AndreyB
We have blue blinking from external +12 volts
I forgot about the v8 engine in the Pathfinder, I bet it uses same pinout.
Please keep talking Are you saying BCM would not authorize cranking until ECU authenticates? Well, worst case scenario I might end up keeping OEM ECU on the CAN bus for the cranking phase.
For my purposes I am happy to wire up the starter relay in any funny non OEM way.
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Re: Hellen 121 Nissan hellen121nissan
Posted: Thu Jul 01, 2021 9:39 am
by Fonzie
"The starter motor plunger closes..." I doubt it can according to the schematic!
Re: Hellen 121 Nissan hellen121nissan
Posted: Fri Jul 02, 2021 4:21 am
by AndreyB
Progress
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Re: Hellen 121 Nissan hellen121nissan
Posted: Wed Aug 11, 2021 10:20 pm
by AndreyB
Pavel @Mad Rat got me in touch with a 2003 and 2004 Nissan Almera owner - 1.5 and 1.8 engines
We've compared VIGN, injector and crank/cam pins, match! Time to drive a vehicle on Hellen Nissan!
Got pedal sensor calibrated, things are amazing!
Second step ETB motor - there is some buzzing but no movement. I forgot to solder pin #3 and forgot to implement ETB relay control - FSIO to rescue, we got ETB movement!!!
That's where things went down. TPS input pins were shifted by one position on Almera. While touching things Pavel has burned his finger on coil control module on Hellen. That's where we found a relay on where we were expecting coil #1.
Good think we have a lot of 0R on the board With four 0R removed we got TPS to show something reasonable, and coil module is no longer hot to touch! We even clicked 3 injectors (due to chip shortage boards farbictated with 6 not 8 mosfets - would need to move on), and 2 coils (todo).
No RPM. Signal pins match expectation but Altima has crank/cam GND going into ECU while Xterra has crank/cam GND in vehicle harness.
Wait, one of the crank/cam Almera GND pins has a legit usage on Xterra!
More 0R removal more jumpers, we got RPM.
So we are at six mismatched pins, will continue after some fixes to the board and settings.
