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Proper engine coolant and a pressurized coolant system obviate these shortcomings of water. With proper antifreeze, a wide temperature range can be tolerated by the engine coolant, such as −34 °F (−37 °C) to +265 °F (129 °C) for 50% (by volume) propylene glycol diluted with distilled water and a 15 psi pressurized coolant system.
Thus, a MAP sensor will always read 100 kPa more than a boost sensor measuring the same conditions. A MAP sensor will never display a negative reading because it is measuring absolute pressure, where zero is the total absence of pressure. Vacuum is measured as a negative pressure relative to normal atmospheric pressure. Vacuum-Boost sensors can ...
At engine start and coolant temperature lower than +85°C Pin 29 on ECU is grounded and a relay in the engine compartment are activated and closes the electrical circuit for the Heat Plates. The circuit is protected by a 40 A MAXI fuse. When the coolant temperature is warmer than +85°C or four minutes has passed the Heat Plates are switched off.
OBD-II PIDs (On-board diagnostics Parameter IDs) are codes used to request data from a vehicle, used as a diagnostic tool.. SAE standard J1979 defines many OBD-II PIDs. All on-road vehicles and trucks sold in North America are required to support a subset of these codes, primarily for state mandated emissions inspections.
Automatic test equipment diagnostics is the part of an ATE test that determines the faulty components. ATE tests perform two basic functions. The first is to test whether or not the Device Under Test is working correctly. The second is when the DUT is not working correctly, to diagnose the reason.
These include such things as reducing pressure drop, eliminating flow induced vibrations, or ensuring uniform flow through an equipment that processes elements of the flow. Since fluid flow carries energy, heat transfer problems such as improving thermal mixing or heating/cooling characteristics are often solved.