Customer states back gate will not lock (Worried about possible elopement) Checked gate for proper operation and tested. (Found Crushed wire from LED Negative Leg To Common On Corby Weather Proof Key Pad) Replaced Corby 6522 Key Pad, Programed and Tested. Securitron Gate (Pin Lock Mechanism Requires Replacement) Lock-will not Engage found Corrosion on lock circuit Board and internal spring looks to be not connected inside mechanism. Gate Alarm Contact still functions and Sounds Alarm In House when gate is breached or opened. Back box is also missing screw in plug.