I have a doosan g25p-3 that will not have any throttle response at start up. Code 29 comes up which is a driver fault to the throttle control unit. I have ohmed the wires from the secm to the throttle control unit. I have ohmed the wires from the pedel throttle position sensor to the secm. This driver fault would be the 5v reference signal that is coming out of the secm from the information that I am seeing. There is also a second control box on this unit under the dash that ties in with the throttle control. I have checked over the harness for rub through damage. Today however I checked for a battery constant (keep alive) power wire to the secm and did not find any. The no throttle will happen from 30 seconds after start up to as long as 5 minutes. Turning the unit off several times and restarting it will usually work after many attempts. I did get a new secm and the unit has a new throttle control unit on it. Does anyone have any good schematics for this or can they tell me which pin/wire color going into the secm should be a constant 12v keep alive power. I am thinking that this power is missing as this only happens when the lift has been sitting for a long period of time. Im thinking the internal battery in the secm drains down and the secm has to reset itself on that first start up. Any help or insight would be appreciated.