No diagnostics info to Laptop.

[12rzr]

My dealer hasn't seen anything like this before.

Any help interpreting these values? Some seem to be crazy readings.
Trying to chase down why the Diacom Marine system can't communicate with the boat to read codes. 2012 RZR, PCM 343.
Could it be a bad wiring harness? Which would help explain the rest of the small electrical gremlins. (intermittent loss of power while idling or surfing - almost like shutting the boat off) House voltage saying 18.6v (1 battery or 4 hooked up, doesn't change. updating didn't help)
Also boat won't start (just cranks over) until the throttle body/actuator cycles itself.

Red triangle lights up and beeps upon start up as well.

Waiting on PCM and Tige to send over schematics, ohm specs and stuff.

Picture is while the boat is idling with Fake-a-lake for about a minute

[freeheel4life]

They are likely selecting the wrong MEFI/ECM at the first diacom screen. You don't just automatically click the PCM box.

If alternator is 18.6v then you have lost path from alternator back to the battery. Either the cable is off of the isolator or isolator has failed, or have seen the ring terminal fail at the alternator post. When an alternator can't see battery voltage it will full field to 18v. The ProIso isolators that got used around this time are prone to failure

I'd be checking fuel pump fuses and ignition fuse under the little black box on top of the engine along with the relays. Can you hear fuel pumps prime when you key to On/Ign position at key??

[12rzr]

I don't know what they were selecting.
Alternator checks out at 14v while running. (Replaced it this off season.) Cranking volts check out at 12.7v too. The digital volt read out by the isolator reads good. It's just the house volts on the screen that never changes.
All fuses under the cover by the ecm are good.
Fuel system primes when key is turned, just won't fire up until the throttle actuator on the motor cycles itself. (Sometimes right away or 10 minutes later upon first try)