On the last trail run the CDL would not lock, after some trail side investigation it was determined that the best action was to jumper the CDL indicator switch so the axle lockers would work and complete the day. After living in denial for a couple of weeks I tore into it, the transmission relay (where the pin 7 mod is done) failed the FSM test, opened it up and there was a burned trace on the board. Two of the relays were desoldered and removed, they tested good, the burned trace bridged and the relays soldered back on. It now passed the test and works good. With the circuit testing good why did the trace burn? There had to be a big load somewhere else, so time to test under the truck. We tested the motor and the resistance readings didn't match the spec in the FSM, put power to it and no run. Pulled the motor off from it's most inconvenient location on top of the transfer case and were greeted by the wonderful smell of the smoke that had escaped, damit. The rear bushing in the motor had failed and bound the motor causing it to overheat and burn up. The only way it's available from Toyota is a whole unit at a price that puts a big dent in the budget, anybody have a used transfer case, actuator or motor they want to part with? All of the locker circuits are protected by one 30amp fuse, in this case allowing enough power to toast it. A better plan may be to have separate fuses or self resetting breakers on each locker circuit. We also weren't impressed with the breather setup and will be changing that.