Power Gear Slide-out System is failing

READING the DC voltage AT the slide motor is the only way to go. Regardless of what the voltage is anywhere else is futile. Unless the voltage is BELOW 12.6 volts. If below 12.6 volts, you do NOT have the Voltage to run the Slide or Jack system. The reason to verify Voltage AT the Slide motor wires is to verify you really have adequate voltage to the slide motor. You can have loose/corroded connections between the switch and controllers and the slide motors that drop the voltage and you will waste time trying to find the cause. There are some controllers that will not function at all with below 12.0 volts at the board, because it knows it cannot operate the motors as required. Most RV's have the chassis battery operate the Leveling Jacks and the COACH batteries operate the slide rooms if electric slide motors. AS the other poster stated, if you show LESS than 12.6 volts, that is the problem you need to fix FIRST. When connected to Shore Power, NO RV should have less than 12.9 to 13.4 volts on the Coach system. If less, then your Converter/Inverter-Charger is not functioning. Doug