Normal Operation
The air bag diagnostic monitor measures the voltage at Pin 14 of the air bag diagnostic monitor connector. Voltage at Pin 14 should be equal to battery voltage. If the voltage at Pin 14 drops to less than 8 volts, the air bag diagnostic monitor will flash out on the air bag indicator a DTC 12. If the voltage at Pin 14 drops to less than 5 volts, the DTC 12 will also be stored in memory. Should the loss of battery voltage at Pin 14 be intermittent or repaired, the air bag diagnostic monitor will flash out a DTC 52 (or higher priority code if one exists) on the next ignition switch cycle.
So the voltage at pin 14 is less than 8 volts right, so if you got the correct voltage, same as you battery, going into diagnostic monitor and not coming out at pin 14 then the monitor is bad (I would think so anyway but not sure) but if you dont have the correct voltage going into the monitor then your problem isnt the monitor and you need to trace the wire out and good luck with that.