Fluid Pressure Sensor/Switch: Service and Repair

Transmission Fluid Pressure Manual Valve Position Switch Replacement

Removal Procedure






1. Remove the transmission side cover.
2. Remove the six bolts from the TFP switch assembly.
3. Remove the TFP switch assembly from the control valve body assembly. The 4 pressure switch O-rings are reusable and should remain with the TFP switch assembly.

Installation Procedure

1. Install the TFP switch assembly to the control valve body assembly . The 4 pressure switch O-rings are reusable and should remain with the TFP switch assembly.

Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

2. Install the six bolts to the TFP switch assembly. Tighten the bolts to 12 Nm (9 ft. lbs.).
3. Install the transmission side cover.

Important: It is recommended that transmission adaptive pressure (TAP) information be reset. Resetting the TAP values using a scan tool will erase all learned values in all cells. As a result, The ECM, PCM or TCM will need to relearn TAP values. Transmission performance may be affected as new TAP values are learned.

4. Reset the TAP values. Transmission Component and System Description