I have a 2017 Honda CRV and left rear door will not lock or unlock with master switch of key fob. I have had the car to dealer who tested actuator and it works along with switch and all fuses are good. I have taken door panel off and checked that there is source voltage at the connector that plugs into actuator. I have also put source voltage on connector of the actuator and the actuator functions properly. So what can it be if there is voltage to the actuator and the actuator also works with power to it. Fuses are all good. I look at wiring at door and can't find anything that looks defective.