Hello, I've come across an issue on my new 6-18052 Lionel Torpedo that has stumped me for now.
The rear electrocoupler won't fire, no matter what feature code I set to the locomotive. I tried resetting it to code 34, 43 (should be the same), 74, and 4 and none fired the coupler. I can hear the Railsounds sound effect of it firing, but it simply won't work. I tested the coupler outside of the tender, and it works fine just by feeding it raw voltage.
I also checked continuity of the brown wire from the LCRU 2 to the tender, and it's connected just fine. One of the electrocoupler leads was in a wire nut with this brown wire from the locomotive, while the other was connected to frame ground on the tender. The tender isn't grounded, so the ground is also supplied from the locomotive.
Is there a diagram for the tender wiring so I can check if this is correct? Is there any diagnostics I can perform to check whether something has gone bad on the LCRU 2? Is there a specific feature code for this locomotive I'm not aware of?
All other functions work just fine, including smoke on/off, headlight on/off, and all Railsounds functions. It runs without issue as well.
I'd appreciate your advice.