B1981 Battery Voltage Low - PZM

Circuit Description:
Battery voltage is supplied to the PZM at Connector C1 terminal "B3." The PZM uses this power feed to perform all of its functions. While the PZM is "awake" the battery voltage at Connector C1 terminal "B3" is measured every 300ms.

DTC Will Set When:
The PCM reports over Class 2 greater than 1500 rpm and battery voltage at Connector C1 terminal B3" is less than 10 volts for 2.0 seconds.

DTC Will Clear When:
The battery voltage is greater than 10 volts in the next monitoring cycle.