[TG] [TG11] No pilot - P70, acu100, ev1

[Tom - Raymarine - Moderator]

Hello Richie-mort,

There are some possibilities that come to mind:

1. a coincidental, unrelated failure in one of the 3 components (I think this is unlikely, they're normally highly reliable)
2. amongst the other work, one of the connectors or terminators has been knocked and an internal contact has been broken somewhere
3. one of the components has been damaged by high charging voltage from the new outboard (outboard charge is often anything but a straight, level DC voltage, and even where the average voltage on a multimeter looks like ~13V, the peaks can be far higher. We have one previous product which used a 60V-rated transient voltage suppressor inside, and we used to frequently see that component blown off the board in units returned to us for service, for example.)
4. Someone's attempted to connect the outboard's engine data system to STNG in order to share engine data - even if that's not something you're aware has been done - but haven't done so correctly
5. the outboard's electrical system may be very noisy, and this may be interfering with the STNG comms
   

Some simple checks you can do:

• power the system off and measure the resistance between the blue and white STNG wires at the terminal block on the ACU100. This should be 60 ohms (2x 120ohm terminating resistors in parallel.) If it's not, that indicates a low-level STNG network problem. What resistance do you get?
• confirm that you have the same problem with the engine not running (no charging voltage)
• Unplug either the ACU or EV from the network and see whether the p70 lists the other device in the STNG Diagnostic device list. Try both ways round - if, for example, the ACU is detected by the p70 when EV is unplugged, but p70 does not detect EV when ACU is unplugged then this means that the p70 and ACU are good and EV is not. If you don't see either device listed then the problem is either the network (cabling, terminators etc.) or both devices have problems.
  

I don't know what Raymarine dealer you contacted of course, but using the diagnostic tests we cover in our annual Service Dealer training this sort of thing should be easy to diagnose using appropriate test tools. Was it definitely a Service Dealer you tried?

Regards,
Tom