DTC B1327: Device Power Circuit Low: Description
DIM monitors voltage on a dedicated circuit to determine if it is between 9.0-15.9 volts. DTC will set if voltage is less than 9 volts for 1.2 seconds. When DTC sets, DIM will notify other modules that battery voltage is low. A current DTC B1327 will clear when voltage is more than 9.54 volts for 1.2 seconds.