Shift High To Low - Phase 1

Fig 1: Shifting High To Low - Phase 1

Courtesy of CHRYSLER GROUP, LLC

1 - PULLEY RATIO LINKAGE

2 - STEPPER MOTOR

3 - RATIO CONTROL VALVE

4 - LINE PRESSURE

5 - SECONDARY VALVE

6 - SECONDARY PULLEY

7 - PRIMARY PULLEY

The pulley ratio linkage moves to the right direction in the stepper motor. As the ratio control valve which links to the pulley ratio linkage, moves fluid and the primary pulley is drained.

Because the secondary valve is moving downwards, line pressure is maintained in the secondary pulley.