Theory Of Operation

For the MDS to enable the 4 cylinder mode, the oil pressure has to be approximately 25 psi. For the MDS to remain enabled in the 4 cylinder mode the engine oil pressure can not drop below 23.2 psi. If the oil pressure drops below 23.2 psi while the, the MDS will be disabled. For further information. Refer to SENSOR, OIL PRESSURE .