BATTERY VOLTAGE BELOW V __________________________________ (range YES/NO) Indicates whether the ECM has recognized a battery voltage below V and is used by the glow plug start system. BOOST PRESSURE(DESIRED)(mbar) BOOST PRESSURE(ACTUAL)(mbar) INTAKE AIR TEMPERATURE) _______________________________ (range not available) Indicates intake air pressure and temperature based on the MAP sensor and IAT sensor signals. Both sensors are combined in the intake air duct between the charge cooler and intake manifold and are used to calculate intake air density and turbocharger boost pressure. Atmospheric pressure at sea level = 1000 millibar boost pressure increases to a positive pressure above atmospheric. Desired and actual should read fairly close to each other.