1994 4Runner tail gate motor has power when activated to go down from tailgate key switch and from front console mounted switch. No power to motor (most of the time) when the key is turned or console switch depressed to raise the window. Occasionally, the switch and key will work in the up mode, but most of the time no. Checked all the switches and the motor. All are working properly. Could it be the relay? I guess the relay is somewhere in the rear left quarterpanel area? Any ideas?