Car Alarms: Issues with existing CA-630 on newly purchased used truck

Question
I just bought a 2005 Ford F-150 SuperCrew that came with a completely undocumented Code Alarm CA-630 in it.  The functions of door unlock, remote start, and find/panic mode work properly.  When pressing the lock/arm button, the system responds with one flash of the vehicle lights, the doors do not lock.  Pressing the lock/arm button again immediately results in one beep of the horn and the same single flash of the vehicle lights.  In both instances, the courtesy lights do stay on for a minute and then shut off.  The red LED in the dash does not go "solid" as if in pre-arm mode under any circumstances, shows 1 per second flash rate with the vehicle not running.  Vehicle does not auto-arm, nor do the door locks secure.  The alarm does not trigger at all unless I use the find/panic mode button.  If I use the remote start function, the doors do lock and the vehicle starts.

I do not see a hood pin for signalling open hood, and there is not an underhood light.  I have not yet found the "emergency switch", I will probably have to dismantle the dash to trace wires in order to find if/where it exists.

What steps should I take in troubleshooting this arm/lock failure?

Answer
Check for the valet override switch built into the antenna that
was placed on the windsheild and go into and out of override a couple of times
so you understand it.
And oh, BTW, GOOGLE is a wonderful resource.
(took less then 5 seconds to get this for you)

http://www.autoelectric.ru/autoalarm/code-alarm/ca/ca-m.htm

http://www.manualslib.com/manual/29660/Code-Alarm-Ca-630.html

Try again.

ALARMTEK