Circuit/System Description

The shift solenoid (SS) 1 is part of the control solenoid valve assembly which has no serviceable parts. The control solenoid valve assembly is attached to the lower control valve body. The solenoid operates by the TCM opening or closing the ground circuit. With the solenoid circuit grounded (solenoid on), the internal plunger and metering ball block the exhaust fluid creating signal fluid pressure. The signal fluid acts against the clutch select valve 2 to overcome the valve spring force moving it to the apply position, allowing the shift. The SS 1 is commanded ON in Park, Reverse, Neutral and Drive 1 Engine Braking, and commanded OFF in Drive 1-6 gear ranges.