5 Volt Supply Output Too Low

NAME OF CODE:
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.

THEORY OF OPERATION:
The PCM maintains a 5 volt supply to the MAP sensor, Throttle Position (TP) sensor, and A/C pressure sensor. It is critical that the 5 volt supply stays between 4.8 and 5.1 volts as this input has a direct effect on sensor output voltages.