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TM-142 < FUNCTION DIAGNOSIS > [5AT: RE5R05A] A/T CONTROL SYSTEM • This line pressure solenoid controls the pressure regulator valve as the signal pressure and adjusts the pres- sure of the operating oil discharged from the oil pump to the line pressure most appropriate to the driving LINE PRESSURE CONTROL IS BASED ON THE TCM LINE PRESSURE CHARACTERISTIC PAT- • The TCM has stored in memory a number of patterns for the optimum line pressure characteristic for the driving state. • In order to obtain the most appropriate line pressure characteristic to meet the current driving state, the TCM controls the line pressure solenoid current value and thus controls the line pressure. Normal Control Each clutch is adjusted to the necessary pressure to match the Back-up Control (Engine Brake) When the select operation is performed during driving and the trans- During Shift Change PCIA0007E PCIA0008E PCIA0009E |