Chrysler Repair: 112 and 1496 trouble codes, throttle position sensor, volt supply

Question
Kevin,
i'm having problems with my '97 Sebring Jxi Convertible (2.5L V6, vin H). i have trouble codes 112 (low voltage at the air intake temp sensor) and 1496 (5 volt supply output too low). also, my battery indicator is lighted up, showing that my battery's not charging (and believe me, it's not). i changed the air intake temp sensor. didn't solve any of the problems. i've had the alternator off and bench tested. it passed the test. do you have any insight into this problem?? where is this 5V supply coming from? do you think this is the root of the problem, or just a symptom?
thank you so much!
-david

Answer
Symptom:
P-1496 5-VOLT SUPPLY OUTPUT TOO LOW
When Monitored and Set Condition:
P-1496 5-VOLT SUPPLY OUTPUT TOO LOW
When Monitored: With the Ignition On.
Set Condition: The 5-volt Supply to the Sensors is below 3.5 volts for 4 seconds.
POSSIBLE CAUSES
5-VOLT SUPPLY CIRCUIT SHORT TO GROUND
A/C PRESSURE SENSOR DEFECTIVE
HARNESS OR CONNECTOR INTERMITTENT DEFECT
MAP SENSOR DEFECTIVE
THROTTLE POSITION SENSOR DEFECTIVE
PCM DEFECTIVE (5V SUPPLY CKT)