The stock ECU is still controlling the alternator. Im using a microsquirt V 2.2 module piggybacked onto the stock oem ecu. The cam and crank sensor signals go straight to the MS ecu with the required 5v pullup on cam sensor via a 470r resistor to the 5v ref out from the MS board.
The crank sensor gets a 12v pull up.
Thats how i was told to do it from the NZ company i bought it from.
Correcting a tune made without alternator by mistake
Moderators: jsmcortina, muythaibxr
Re: Correcting a tune made without alternator by mistake
When you say, "Straight to the ECU," you mean to the VR & VR2 pins, right?
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Re: Correcting a tune made without alternator by mistake
Can you put up a link to this company?calcfr wrote: ↑Mon Mar 25, 2024 4:35 am The stock ECU is still controlling the alternator. Im using a microsquirt V 2.2 module piggybacked onto the stock oem ecu. The cam and crank sensor signals go straight to the MS ecu with the required 5v pullup on cam sensor via a 470r resistor to the 5v ref out from the MS board.
The crank sensor gets a 12v pull up.
Thats how i was told to do it from the NZ company i bought it from.
Linfert Performance/321 Motorsports
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SCCA 2019 SM National Champion Crew Chief
SCCA 2023 FP National Champion Tuner/electrical engineer
100s of MS systems built installed and tuned
Support the developers!
Re: Correcting a tune made without alternator by mistake
The Company is Megasquirt NZ Ltd.
As i was instructed:
The cam sensor signal wire was connected to Pin 14 (VR In2+) with a 5v pullup via a 470 resistor from pin 15 which is the 5v vref out.
The crank signal wire was connected to pin 19 (Opto In-) with a 12v pullup cia a 470r resistor connected to PIn 2 (12v).
I did the pull ups using the legs either side od the resistor to bridge the required pins such as from VR In2+ to 5v Vref-out.
Have i done wrong, how should it be done for a hall effect sensor?