In 2004, LHAs were used to transport thousands of Marines and their equipment to Iraq and Afghanistan for combat operations. LHA 6 was placed under contract in June 2007 with NGSB. LHA 6 will be an aviation-centric modified repeat of the USS Makin Island, LHD 8 and is scheduled for delivery to the Navy in 2013.
Circuit Description. The PCM supplies a bias voltage (approximately 450 mV) on the Heated Oxygen Sensor (HO2S) signal high and low circuits. When you turn the ignition to the ON position, battery voltage is supplied to the HO2S heater.hen you start the engine the PCM monitors the HO2S voltage. When the HO2S voltage goes above or below the bias range threshold, the PCM determines how much time it took. If the PCM detects that the process took too much time for the HO2S to enter into normal operating range, a DTC sets.
Bias voltage is the amount of voltage that an electronic device needs in order to power on and function. Without bias voltage, an electronic device wouldn't have the power to turn on and be operated. A microphone is one such device which needs bias voltage in order to operate. If a microphone doesn't receive this power, it can't record any signals and thus it's inoperable.