Valve Body: Service and Repair

4F27E

Main Control





Removal

1. Remove the transmission fluid pan. For additional information, refer to Transmission Fluid Pan Service and Repair.

2. Disconnect the Transmission Fluid Temperature (TFT) sensor electrical connector.





3. Remove the transmission fluid filter.





4. NOTE: It is necessary to note the location of the main control wire harness connectors so they can be connected in the same positions. Connector color letters are cast into the solenoid body.

Remove the main control ground wire bolt. Disconnect the electrical connectors and remove the main control wiring harness.

1. Shift Solenoid C (SSC), color N (White).

2. Shift Solenoid E (SSE), color G (Green).

3. Shift Solenoid D (SSD), color L (Blue).

4. Pressure Control Solenoid A (PCA), color B (Black).

5. Shift Solenoid A (SSA), color N (Natural).

6. Shift Solenoid B (SSB), color B (Black).





5. NOTE: Note the locations of the 2 long bolts.

Remove the main control valve body and accumulators.





6. NOTE: Each accumulator is equipped with 2 springs. All 4 springs are different sizes.

NOTE: Note the size and location of the accumulator springs to aid assembly.

NOTE: Note the shape of each piston and the piston bore from which the piston was removed. The shape and size will vary depending on application. The piston must be installed in its correct bore during assembly.

Remove the accumulator pistons and springs.





Installation

1. NOTE: The thin longer springs are for the neutral and drive accumulator.

NOTE: Accumulator bore and pistons are matched by depth; some pistons may have steps. Install the pistons in the same bore as removed.

Install the accumulator pistons and springs.

1. Accumulator 1 and 2.

2. Accumulator N and D.





2. NOTICE: Make sure that the manual control valve lever is in the manual control valve or the transaxle will not shift between gear positions correctly.

NOTE: Do not fully tighten the main control valve bolts at this stage.

Install the main control valve body.





3. Tighten the main control valve body retaining bolts.
- Tighten the bolts in the sequence shown.
- Tighten to 9 Nm (80 lb-in).





4. NOTE: It is necessary to connect the electrical connectors in the same positions as noted in disassembly. Connector color letters are cast into the solenoid body.

Install the main control valve wiring harness, connect the electrical connectors and install the main control ground wire bolt.

1. SSC, color N (White).

2. SSE, color G (Green).

3. SSD, color L (Blue).

4. PCA, color B (Black).

5. SSA, color N (Natural).

6. SSB, color B (Black).

- Tighten the main control ground wire bolt to 10 Nm (89 lb-in).





5. Install the transmission fluid filter.





6. Connect the TFT sensor electrical connector.





7. Install the transmission fluid pan. For additional information, refer to Transmission Fluid Pan Service and Repair.