Valve Body

Description and Operation

Description

• The installed valve body is located inside the transmission.
• The valve body is necessary to control the automatic transmission and consists of various valves used to control the oil flow from the oil pump.
• Specifically, these valves consist of pressure regulator valves, oil redirection valves, shift valves and manual valves.
• The valve body also features electronic solenoid valves that ensure smooth shifting.

  

Repair Procedures

Removal

When the diagnostic trouble codes (DTC) for a solenoid valve are set, perform the following procedure to replace it. The automatic transmission consists of delicate components. Be careful not to damage any parts during disassembly and assembly. Keep the work area clean so that foreign matter does not enter the automatic transmission. Use a coated apron, latex gloves and a stainless steel tray to prevent foreign material from entering the transmission. Automatic transmission fluid (ATF) can be reused. Collect it using a clean 10-liter container.

1. 1
   Turn the ignition switch OFF and disconnect the negative (-) battery cable.
2. 2
   Remove the battery and battery tray. (Refer to Engine Electrical System - "Battery")
3. 3
   Remove the air duct and air cleaner assembly. (Refer to Engine Mechanical System - "Air Cleaner")
4. 4
   Remove the under cover. (Refer to Engine Mechanical System - "Engine Room Under Cover")
5. 5
   Drain the engine coolant. (If equipped with ATF warmer) (Refer to Engine Mechanical System — "Engine Coolant").
6. 6
   Loosen the drain plug (A) and reinstall it after draining the ATF completely.

   Tightening torque: 33.3–43 N·m

   

   Replace the gasket before reinstalling the drain plug.

7. 7
   Loosen the locking bolt (A) and remove the bracket.

   Tightening Torque: 9.8–11.8 N·m

   

8. 8
   Loosen the mounting bolts (A) and remove the bracket.

   Tightening Torque: 9.8–11.8 N·m

   

9. 9
   Disconnect the ATF cooler hose (A).

   

   Carefully install the clamp so as not to damage the hose. Install the clamp in the correct direction so that it does not interfere with other parts. After installation, start the engine and check for leaks from the hose.

10. 10
    Loosen the upper bolts (A) of the valve body cover.

    Tightening torque: 11.8–13.7 N·m

    

11. 11
    Remove the valve body cover (A) after removing the bolts.

    Tightening torque: 11.8–13.7 N·m

    Be careful when removing the valve body cover, because residual ATF remains in the cover.

    

    Replace the gasket (A) before reinstalling the valve body cover. After installation, start the engine and check for leaks from the valve body cover.

12. 12
    Loosen the bolts and then disconnect the main harness (A).

    Tightening Torque: 9.8–11.8 N·m

    

13. 13
    Remove the valve body assembly (A).

    Tightening torque: (A) 9.8–11.8 N·m

    

    Attach the manual pin (B) to the detent lever (A) and assemble the valve body.

Installation

1. 1
   To install, reverse the removal procedure.
2. 2
   The existing valve body cover gasket (A) must be replaced with a new one. (Do not reuse.)

   

3. 3
   Perform the procedures described below after replacing the valve body assembly.
4. 4
   Fill the automatic transmission with fluid. (Refer to Hydraulic System — "Fluid").
5. 5
   Add engine coolant. [If equipped with ATF warmer] (Refer to Engine Mechanical System — "Engine Coolant").
6. 6
   Erase diagnostic trouble codes (DTC) using the diagnostic scan tool. Disconnecting the negative battery terminal will not clear DTCs. Always clear DTCs using the diagnostic scan tool.
7. 7
   Reset the automatic transmission adaptive values using the diagnostic scan tool.

   

8. 8
   Perform the oil pressure characteristic input procedure using the diagnostic scan tool.

   

9. 9
   Perform the procedure to store the TCM adaptive values. (Refer to "Automatic Transmission Control System - Repair Procedures")
10. 10
    After installation, check for fluid leaks from the hose connection while starting the engine.