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  1. tpenfield

    Mercury 6.2 ECT DTS Axius Voltage Issue

    It is a ProMariner Model 2-70-3 . . I believe it is a simple diode-based isolator, there was not a ground connection. The engines are happy now. :D Clean power is clean.:cool: and other power seems to be where and when it is supposed to be. Still getting the 9.2 volts on the ignition feed...
  2. tpenfield

    Mercury 6.2 ECT DTS Axius Voltage Issue

    Monday morning update . . . I am definitely getting 'crosstalk' from the port battery to the starboard battery/engine. I took the 2 alt/3 batt (only 2 batts are connected) out of the equation and the crosstalk went away. Thinking over the weekend, I had a hunch that the problem would be...
  3. tpenfield

    Mercury 6.2 ECT DTS Axius Voltage Issue

    Thanks @muc. Good to know about the reverse thrusters. I will try this after any testing of the ignition. FWIW - I have not interrupted power with the ignition switches on . . . figuring something bad could happen. :unsure: I won't be back at the boat until Monday (traveling this weekend)...
  4. tpenfield

    Mercury 6.2 ECT DTS Axius Voltage Issue

    After a bit searching, I think I have come across what the clean power cable should look like. . . . . So, perhaps what I am seeing coming out of the wire bundle in the stbd electrical box (that looks disgusting) is the ring connector lead. Within the bundle, I should find the fuse holder...
  5. tpenfield

    Mercury 6.2 ECT DTS Axius Voltage Issue

    Yes, if you drive on the CT stretch of I-95 or Rt-15, you don't have to worry about which gas stop, as there are service stations about every 15 miles. :ROFLMAO: Anyway, The labeling of the power is a bit confusing, and there are 3 leads that go to the starboard Pos isolation post. The 2 with...
  6. tpenfield

    Mercury 6.2 ECT DTS Axius Voltage Issue

    The build quality of the boat is great, but the electrical system seems to be overly complicated. The accessory wiring is all labeled with a wire number and purpose, but some of the engine power wiring is not. I have a feeling that the boat had electrical issues all along since the clean power...
  7. tpenfield

    Mercury 6.2 ECT DTS Axius Voltage Issue

    I might want to check the 2 alternator/3 battery isolator. That could be part of the problem . . . never like the looks of that thing.
  8. tpenfield

    Mercury 6.2 ECT DTS Axius Voltage Issue

    Thank you (y) . . . I'll see what I can find about the wiring for the clean power. I'm not so sure the manufacturer did the best job connecting the engine wiring, so it would not surprise me if they are in fact connected.
  9. tpenfield

    Mercury 6.2 ECT DTS Axius Voltage Issue

    The ALTERNATOR !!! 😠 I disconnected the excite wires from the alternator and the Purple wire voltage with ignition ON is up to 11.5 v, same as the port engine. The clean power stayed a bit higher 12.4v vs. 12.0 with the alternator excite connected. I still get the buzzing when I turn the...
  10. tpenfield

    Mercury 6.2 ECT DTS Axius Voltage Issue

    Wondering if I should unplug the Alternator Excite connector . . . as a test.:unsure:
  11. tpenfield

    Mercury 6.2 ECT DTS Axius Voltage Issue

    Here is the clean power on the port engine . . . . The 2 CB's . . . Starboard side. . The engine clean power is on a third lead from the STBD isolation post it does not appear to have a CB, which I think is as it should be; Thus 'clean'.
  12. tpenfield

    Mercury 6.2 ECT DTS Axius Voltage Issue

    Quick Update . . . I replaced the circuit breakers for Main power and Axius clean power. Not sure if they were a problem, but they are replaced. >>> I think I have clean power (12.85 volts) >>> Still getting 9.2 volts at the ignition wire. I swapped the ignition keys and the 9.2v stayed on...
  13. tpenfield

    Mercury 6.2 ECT DTS Axius Voltage Issue

    The outdrives are now installed. Every years as I'm installing them I say to myself . . ."gotta get a boat with outboards . . ." Working on the clean power . . . Port engine voltages are normal and what you would expect. The 11.8v that I'm seeing on the starboard engine with the battery off...
  14. tpenfield

    99 Monterey 276 Transom Replacement

    If I were me, I would have hit the dark areas with bleach (or something to prevent rot) and then let it dry out. Sort of a judgement call as to what can and cannot be done. I believe the OP had a shop do the repair, so there is some experience to be trusted perhaps?
  15. tpenfield

    Mercury 6.2 ECT DTS Axius Voltage Issue

    OK - today is going to be 'clean power' day. I think I found the connector on the engine, just need to tap into it for voltage readings.
  16. tpenfield

    99 Monterey 276 Transom Replacement

    Thanks for the update . . . Looking forward to fixing the stringers. I cannot remember if you had done core samples of the stringers. :unsure:
  17. tpenfield

    Mercury 6.2 ECT DTS Axius Voltage Issue

    Yes, maybe that is a keep-alive and directly connected to the battery. I think my set-up is like that. I just got to compare things to how the port engine is set up.
  18. tpenfield

    Mercury 6.2 ECT DTS Axius Voltage Issue

    question for the Merc experts among us . . . I still consider myself a journeyman status . . . Does the smartcraft/DTS have/need a keep alive connection? Or . . . if/ when I shut the battery off, should there be no power to the engine systems? (asking for a friend :ROFLMAO: )
  19. tpenfield

    Mercury 6.2 ECT DTS Axius Voltage Issue

    Quick Update . . . After 1 hour I am seeing 11.9 v on the Red/Purple & Red/Pink wires . . . If I disconnect the starboard battery, I am still seeing 11.9v on those wires. Sort of means the engine is getting some power from another place. As for now it is beer o'clock . . . more 'fun' in the AM.
  20. tpenfield

    Mercury 6.2 ECT DTS Axius Voltage Issue

    Yes, this engine (2016) is the in-house Mercury built (Not GM), It has the PCM 112 control module. Here is an updated power diagram and some voltage readings that I took. I agree voltage is getting somewhere it shouldn't. . Power wiring diagram, as best I can make ( @muc ) I will PM you the...
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