RichCollins10
New member
- 5
- 12
- 3
- Location
- Pittsburgh, PA
Currently have an M1078A1 2320-01-447-6343, 2005 model. that is refusing to cooperate. Not charging in neutral, but charges in gear. Ran thru all the schematics and haven't had any luck. so far we have replaced batteries( it has AGM's in it), connections at the batteries and shut off solenoids, LBCD, every relay and CB in the PDP's, CTIS ECU, TCM, 100A Generator with Regulator ( w/ Led Lights), intake heater solenoid (old one was burnt up. The K40 Start Disable relay was overheated and practically welded itself to the Trailer B/O Relay right next to it in PDP # 3, so we replaced the entire PDP # 3 as well as PDP # 4 with known working good ones from another M1078A1, checking connections from K11 and K26 relays and everything checks out like it should. Low oil light goes off after start up, and we have good oil pressure. We have stepped the batteries down to 2 from 4 to try and see if the load difference would fix the issue/ no luck there. The only way we are able to have it charge is to remove the K11 Relay after start up, as soon as we replace it, no charge comes back on. K11 does not energize the alternator in neutral on wire 568A, only in drive. Regulator lights blink green when in drive, no lights in neutral. Been tackling this for over a week, any help is appreciated! What are we missing?!