Main Control Valve Body

Main Control Valve Body

Removal

1. WARNING: Before servicing a vehicle equipped with a fire suppression system, depower the system by following the procedure in Fire Suppression System. Failure to follow the instructions may result in serious personal injury. Procedures

Drain the transmission fluid and remove the transmission fluid pan and transmission fluid filter. For additional information, refer to Fluid Pan, Gasket and Filter Service and Repair.

2. NOTICE: Carefully pry up on the locking tabs to disconnect the solenoids. Disconnect the transmission internal harness from the solenoids.

Disconnect the transmission internal harness from the solenoids.

1. Disconnect Shift Solenoid A (SSA) and Shift Solenoid B (SSB).

2. Disconnect the Torque Converter Clutch (TCC).

3. Disconnect the Electronic Pressure Control (EPC) solenoid.

4. Disconnect the Transmission Fluid Temperature (TFT) sensor.





3. Remove the manual control valve detent lever spring and bolt.





4. Remove the bolt and the EPC solenoid bracket.





5. Remove the 23 main control valve body bolts.





6. Remove the main control valve body and discard the pump outlet screen.





Installation

1. NOTE: Make sure that the drive pin of the manual valve detent lever assembly engages the manual valve in the correct location prior to installing the bolts.

Position the main control valve body gasket and main control valve body using the 2 alignment bolts as a guide.





2. NOTE: The main control valve body bolts will be tightened in later steps.

Loosely install the 11 long main control valve body bolts.





3. NOTE: Lubricate the EPC solenoid O-rings with automatic transmission fluid.

Position the EPC solenoid bracket and loosely install the bolt.





4. The main control valve body bolts will be tightened in later steps.
- Loosely install the 12 short main control valve body bolts.





5. Install the manual control valve detent lever spring and loosely install the bolt.





6. Tighten the main control valve body bolts in the sequence shown.
- Tighten to 10 Nm (89 lb-in).





7. Inspect the transmission internal harness for damage.

8. Connect the transmission internal harness to the solenoids.

1. Connect the EPC solenoid by pressing it in place by hand and fully seating the connector in place.

2. Connect the TCC by pressing it in place by hand and fully seating the connector in place.

3. Connect the shift solenoid SSA and SSB by pressing it in place by hand and fully seating the connector in place.

4. Connect the TFT solenoid by pressing it in place by hand and fully seating the connector in place.





9. NOTICE: The transmission internal wire harness needs to be properly routed to avoid the potential of damage to the harness. Pinched or trapped wires may result in a transmission failure.

Make sure that the internal wire harness is properly routed.





10. Install the transmission fluid pan and transmission fluid filter. For additional information, refer to Fluid Pan, Gasket and Filter Service and Repair.

11. WARNING: If the vehicle is equipped with a fire suppression system, repower the system. For important safety warnings and procedures, refer to Fire Suppression System. Failure to follow these instructions may result in serious personal injury. Description and Operation

If equipped with a fire suppression system, repower the system.