Jump to content


  • Content Count

  • Joined

  • Last visited

Posts posted by MatterCompressor

  1. I'll pull it out of the case and double check what one it is to be sure then.


    and looks like I may have to get someone to take a look at it

    I'm in South Australia, and it was first tuned by a guy who knows Link ECU's fairly well, so I'll ask him and see what the deal may be.


    Thanks for the advice!

  2. well I can't hear the coils firing as they have no signal going to them as the triggers aren't working so they aren't getting any signal to fire, but I see where you're coming from there.


    I'll try your test and disconnect and see if they provide the same result. they aren't plugged in at that point per se, I can still just pull them and disconnect, supply and trigger are just bullet lugged at the moment in lieu of deutsch connectors which will be going on once the new loom is done.

    I'll also see if it makes any difference running from the 14v supply as well, maybe that'll make a difference too.


    and yes, to confirm, the car was running on this ECU, with the same tune, same wiring, only difference was it had factory dizzy, no coil packs or cherry hall sensors. In saying that, I had to cut 4 wires on the "factory" loom (it has a patch loom for the gen 2-3 elecs swap that required work in itself) to run for the coil pack signal, but as far as I can tell on the diagrams, those wires went nowhere once the ECU was installed.

    I even cross checked the two pinouts from Gen 1 to 2-3 and none of those pins I've used match up to the readings I'm getting

    also the intercooling, as it's got a W2A setup now, but the only electrical there is the water pump at the front end, which isn't even wired up yet.


    Also, as I mentioned before, I'm getting no continuity from sensor ground (pin 46), but do from the chassis, hence why these 2 sensors are earthed to the chassis right now.

  3. Hey CJ,


    there are some interesting numbers indeed.

    All of these were working correctly before I did the coil on plug conversion, as it had the initial tune done with the Distributor.

    the only things I've changed have been according to the MR2 Link manual for Gen 2-3 manual, which is adding coilpack signal to pins 20, 7, 8 and 17 for ignition signal, and triggers to pins 10 and 22.

    as well as supply voltage for all, and earthing.

    the coilpacks themselves aren't firing right now, but that's irrelevant and expected as we aren't getting a trigger signal yet


    I'm still running the triggers from the 5V supply as of now as ran out of time last night before it got dark, but it's definitely getting power as I'm getting a complete circuit and am now earthing to chassis.

    have double and triple checked the wiring pinouts compared to my wiring, the ECU earth itself doesn't appear to be functional for unknown reasons.


    Something I thought of last night was that I may actually have a Gen 1 MR2Link, as the pinouts are different for some of the ignition wiring and and trigger signals, but that doesn't line up with the readings we're getting as shown above either.


    I am somewhat tempted to just pull the entire mess of a loom and just redo it with the A-Loom I have sitting here ready to go for when I change to a Monsoon, but would rather it all works before I waste my time and it doesn't function.



  4. Can the sensors ground to the chassis or do they HAVE to be to the ECU?

    If it has to be to the ECU, I'll rerun the wiring and see how that goes.

    Also, according to the diagram, there's no 12V, would the 14V supply be okay for these sensors, just to be on the safe side?


    Thanks for your help!

  5. There appears to be no continuity between Pin 46 and the blue wire, no.

    We checked all 3 when first attempting to start and both others got a signal with the multimeter, ground gets nothing.

    I'll post a screencap of the settings currently used (I didn't set this up so could use some help there too) tonight.



  6. Hey all,


    Having some trouble with a coil on plug conversion.

    Running a Gen 2/3 MR2 Link on my Gen 2 3S-GTE.

    It's had the electronics swapped to Gen 3 and ditched the AFM


    I purchased a RacerX Coil on Plug conversion kit for it, running 1ZZ-FE Coil Packs, with a 36-1 tooth crank trigger wheel and 1 tooth cam trigger.

    This came with a pair of 3-wire Cherry Hall sensors designed for this purpose, see following link:


    We already know the engine runs fine, it was first tuned running the factory distributor and intercooler. Now has a W2A setup and the aforementioned coilpacks.


    The issue I've run into is that when changing the ignition type to Direct Spark for the coil packs, we're getting no trigger signal from either crank or cam sensors.

    I've checked the wiring according to the ST205/MR2 manual and wired it according to what's online:


    Blue is ground, running to ECU ground (pin 46 on ECU)

    Brown is supply voltage (running 5V supply from ECU, Pin 38)

    Black is signal to ECU (to triggers 1 and 2 on the ECU, pins 10 and 22 respectively)

    I've checked the wiring from sensors to the ECU, they're getting power and supplying signal, but the ground on both of them is getting nothing

    Even running a resistance check from the ground wire to the chassis directly gets nothing from either sensor.


    I also purchased a brand new one to be safe, same result


    Any suggestions as to why the earth on all of these isn't picking up and why the ECU isn't picking up a trigger signal from either sensor?


    Any advice would be fantastic. Once it runs again, I'll be replacing the P&P with a wire in Monsoon to tidy up the engine bay, but would rather the wiring is done right before i replace it



  • Create New...