Maxima SE V6-3.0L (VQ30DE) (1998)
Clutch Control Solenoid Valve: Description and Operation
General Description
DESCRIPTION
The overrun clutch solenoid valve is activated by the TCM in response to signals sent from the inhibitor switch, overdrive control switch, vehicle speed
and throttle position sensors. The overrun clutch operation will then be controlled.
Line Pressure Control
LINE PRESSURE CONTROL
TCM has the various line pressure control characteristics to meet the driving conditions.
An ON-OFF duty signal is sent to the line pressure solenoid valve based on TCM characteristics.
Hydraulic pressure on the clutch and brake is electronically controlled through the line pressure solenoid valve to accommodate engine torque. This
results in smooth shift operation.
Normal Control
The line pressure to throttle opening characteristics is set for suitable clutch operation.
Back-Up Control (Engine Brake)
If the selector lever is shifted to "2" position while driving in D4 (OD) or D3, great driving force is applied to the clutch inside the transmission. Clutch
operating pressure (line pressure) must be increased to deal with this driving force.