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    2019 Mercury 40 ELPT EFI (3-cyl) cranks, won't start. No key-on beep, no relay click, no fuel pump hum. Power and ground look good at ECM.

    Oh yeah I checked that. I have made sure the switch is in RUN when cranking and troubleshooting. If I need to open that throttle assembly up and jump that switch that's going to be a problem because the screws that mount it to boat just spin like theres nuts on the back and the throttle is...
  2. N

    2019 Mercury 40 ELPT EFI (3-cyl) cranks, won't start. No key-on beep, no relay click, no fuel pump hum. Power and ground look good at ECM.

    12V on purple at the motor with key ON: Yes. I back-probed it and it’s getting to the ECM. I can cycle the key ON/OFF and I see the voltage change (12V to 0). Grounds seem OK at the plug as well. Stop switch jumper: I haven’t tried this yet because I’m not sure where the stop switch is. Is it at...
  3. N

    2019 Mercury 40 ELPT EFI (3-cyl) cranks, won't start. No key-on beep, no relay click, no fuel pump hum. Power and ground look good at ECM.

    Engine: 2019 Mercury 40 ELPT FourStroke EFI, serial 1C567275. Console steer with remote control, power trim. Symptoms: - Cranks normally, never fires. Ran 3 weeks ago on a weeklong trip. - It used to beep and make a click/clunk under the cowl when I turned the key on. Now there is no beep, no...
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