Upshift/Downshift Solenoid Valves

WARNING: This page is about a different car, the 2005 Jeep Grand Cherokee. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Upshift/Downshift Solenoid Valves

Courtesy of DAIMLERCHRYSLER CORP.

1 - UPSHIFT/DOWNSHIFT SOLENOID VALVE

2 - CONTACT SPRING

3 - CONDUCTOR TRACK

4 - O-RING

5 - VALVE HOUSING OF SHIFT PLATE

6 - O-RING

7 - CONDUCTOR TRACK

8 - CONTACT SPRING

If a solenoid valve (1) is actuated by the TCM, it opens and guides the control pressure (p-SV) to the assigned command valve. The solenoid valve remains actuated and therefore open until the shifting process is complete. The shift pressure (p-SV) to the command valve is reduced to zero as soon as the power supply to the solenoid valve is interrupted. See Fig 1.