Toyota Corolla CVT P2757 Valve Body Replacement - Technical Service Bulletin
TSB Number: T-SB-0150-16
Date: October 20, 2016
Applicability
| YEAR(S) | MODEL(S) | Market | ADDITIONAL INFORMATION |
|---|---|---|---|
| 2014 - 2017 | Corolla | USA | Transmission(s): CVT |
Introduction
Some 2014 – 2017 model year CVT Corolla vehicles may exhibit a MIL “ON” condition with Diagnostic Trouble Code (DTC) P2757 (Torque Converter Clutch Pressure Control Solenoid Performance [Shift Solenoid Valve SL]). Follow the Repair Procedure below to address this condition.
Warranty Information
| OP CODE | DESCRIPTION | TIME | OFP | T1 | T2 |
|---|---|---|---|---|---|
| TC1602 | R & R Transmission Valve Body Assembly | 3.1 | 35410-12871 | 8A | 99 |
APPLICABLE WARRANTY
- This repair is covered under the Toyota Powertrain Warranty. This warranty is in effect for 60 months or 60,000 miles, whichever occurs first, from the vehicle's in-service date.
- Warranty application is limited to occurrence of the specified condition described in this bulletin.
Required Tools & Equipment
| REQUIRED EQUIPMENT | SUPPLIER | PART NUMBER | QTY |
|---|---|---|---|
| Techstream 2.0* | ADE | TS2UNIT | |
| Techstream Lite | TSLITEPDLR01 | 1 | |
| Techstream Lite (Green Cable) | TSLP2DLR01 |
* Essential SST.
NOTE
- Only ONE of the Techstream units listed above is required.
- Software version 11.20.019 or later is required.
- Additional Techstream units may be ordered by calling Approved Dealer Equipment (ADE) at 1-800-368-6787.
Parts Information
| PART NUMBER | PART NAME | QTY |
|---|---|---|
| 35410-12871 | Body Assy, Transmission Valve | 1 |
| 35168-12091 | Gasket, Transaxle Oil Pan | 1 |
| 35145-07010 | Gasket, Transaxle Case | 1 |
| 90301-22019 | Ring, O | 1 |
| 90301-06004 | 1 | |
| 08886-02505 | ATF CVT FE (4 L can) | 2* |
*Approximately 6 L of CVT fluid required for repair
Repair Procedure
NOTICE TO PREVENT CONTAMINATION - DO NOT CLEAN CVT CASE
- Perform work when it can be done without interruption.
- Prepare a clean work environment before initiating work.
- Be careful NOT to contaminate the CVT with debris and dust.
- Do NOT use a shop cloth, a paper shop cloth, or cotton gloves.
- Do NOT perform work in close proximity to others using air guns.
Removing the Valve Body
NOTE: Do NOT open the package of the NEW Transmission Valve Body Assembly until just before replacement.
- Remove the CVT fluid.
Refer to the Technical Information System (TIS), applicable model and model year Repair Manual:
- 2014 / 2015 / 2016 / 2017 Corolla: Drivetrain – CVT – “K313 CVT: Continuously Variable Transaxle Fluid: Replacement”
- Remove the drain plug and gasket from the transaxle oil pan sub-assembly.
- Unscrew 16 bolts and remove the transaxle oil pan sub-assembly from the transmission case.
(See Figure 1. Transaxle Oil Pan Bolts: An illustration showing the transaxle oil pan with 16 bolt locations marked around its perimeter.) - Remove the Transaxle Oil Pan Gasket from the transaxle oil pan sub-assembly.
- Unscrew 3 bolts and remove the oil strainer from the Transmission Valve Body Assembly.
- Bolt A: (2) 16mm in length
- Bolt B: (1) 25mm in length
(See Figure 2. Oil Strainer: Depicts the oil strainer component, with bolt locations labeled 'A' (two 16mm bolts) and 'B' (one 25mm bolt). Figure 3. Oil Strainer O-ring: Shows the oil strainer and highlights the groove where the O-ring is seated.)
- Remove the O-ring from the oil strainer.
NOTE: Take care to ensure there is no contamination on the oil strainer. - Remove 1 bolt, oil temperature sensor clamp and disconnect 5 connectors of transmission harness from the Transmission Valve Body Assembly.
NOTE: Do NOT remove respective solenoid valves from the transmission valve body.
(See Figure 4. Transmission Valve Body Assembly: An exploded view or diagram of the transmission valve body assembly, identifying key components: 1. Oil Temperature Sensor, 2. Oil Temperature Sensor Clamp, 3. Oil Temperature Sensor Bolt, 4. Transaxle Wire, 5. Connectors. Figure 5. Male Connector Tab: Illustrates the process of disconnecting an electrical connector using needle-nose pliers, showing how to press the tab on the male connector.)
A. To remove the connector, apply the needle-nose plier end to the male connector tab. (See Figure 6. Male Connector Cross Section: A cross-sectional view demonstrating the mechanism for disconnecting a connector, showing the male connector claw and the female connector lock. Figure 7. Male Connector: A simplified schematic representation of a male electrical connector.)
- Remove the O-ring from the oil temperature sensor.
- Unscrew the 13 bolts and remove the Transmission Valve Body Assembly from the transmission case.
- Bolt A: (2) 20mm in length
- Bolt B: (7) 35mm in length
- Bolt C: (4) 45mm in length
(See Figure 8. Transmission Valve Body: Shows the transmission valve body assembly with 13 bolt locations indicated and labeled: 'A' (two 20mm bolts), 'B' (seven 35mm bolts), and 'C' (four 45mm bolts). Figure 9. B1 Gasket: A diagram of the B1 gasket.)
- Remove B1 gasket from the transmission case.
NOTE: As soon as removal of the transmission assembly is complete, install the Transmission Valve Body Assembly without ANY interruption to avoid contamination.
Installing Valve Body
- Apply a small amount of Toyota genuine MP grease No.2 or CVT fluid to the NEW B1 gasket.
- Install the gasket to the transmission case.
NOTICE: To prevent B1 gasket from falling off, ensure that it is properly installed to the transmission case. - Install the Transmission Valve Body Assembly.
NOTICE: When installing the NEW Transmission Valve Body Assembly, fit it into the transmission case carefully as to NOT damage the top of the sub strainers that are positioned at the back of the Transmission Valve Body Assembly.
(See Figure 10. Front View: Shows the front side of the transmission case where the valve body attaches. Figure 11. Back View: Shows the back side of the transmission case, highlighting the location of the sub-strainer. Figure 12: Illustrates the correct alignment procedure for installing the valve body, showing how to match the projection of the manual valve lever sub-assembly with the ditch of the manual valve. Figure 13. Transmission Valve Body: Shows the transmission valve body with specific bolt positions marked as 'A', indicating where the 35mm bolts are installed.)
NOTICE: When installing the NEW Transmission Valve Body Assembly, hold the Transmission Valve Body Assembly horizontally to prevent the manual valve from falling off.
- Hold the Transmission Valve Body Assembly horizontally.
- Match the projection of the manual valve lever sub-assembly and the ditch of the manual valve as shown.
- Install the NEW Transmission Valve Body Assembly to the transmission case horizontally.
- Hold the 2 bolts (35 mm in length) by hand and install to position A.
- Temporarily tighten the bolts manually until they sit properly on the Transmission Valve Body Assembly.
- Temporarily tighten the remaining 11 bolts manually until they sit properly.
- Bolt A: (2) 20mm in length
- Bolt B: (7) 35mm in length
- Bolt C: (4) 45mm in length
- Tighten the 13 bolts.
Torque: 10.8 N*m (110 kgf*cm) (See Figure 14. Transmission Valve Body: A detailed view of the transmission valve body showing all 13 bolt locations, categorized by size: A (20mm), B (35mm), and C (45mm).) - Apply Toyota genuine CVT fluid to NEW O-ring and fit it to the oil temperature sensor.
- Fit 1 bolt, oil temperature sensor clamp and 5 connectors.
Torque: 10.8 N*m (110 kgf*cm) - Install the transmission harness to the transmission valve.
NOTE
Refer to the table below for respective connectors, solenoid connectors and wiring of the transmission harness to ensure proper installation.
1 2 3 4 5 Solenoid Connector Color Black Black Blue Black Black Transaxle Harness Connector Color White Green Black Green White Wiring Color Purple White/Black Blue/Red Light Blue Yellow/Light Green
- Install the oil strainer.
(See Figure 15. Oil Strainer O-ring: Shows the oil strainer component and the groove for its O-ring. Figure 16. Oil Strainer: Illustrates the installation of the oil strainer, indicating where to apply pressure and the locations for the two 16mm bolts (A) and one 25mm bolt (B).)
- Apply Toyota genuine CVT fluid to the NEW O-ring and then fit it into the oil strainer.
- Tighten the 3 bolts evenly, temporarily install the oil strainer to the Transmission Valve Body Assembly.
- Bolt A: (2) 16mm in length
- Bolt B: (1) 25mm in length
NOTE: When installing the oil strainer to the Transmission Valve Body Assembly, prevent the O-ring from being caught and apply pressure to the area below the A bolt at the 12 o'clock position as shown while keeping the strainer level. Prevent the transmission wiring from being caught between the Transmission Valve Body Assembly and the oil strainer.
- Tighten the 3 bolts.
Torque: 10.8 N*m (110 kgf*cm)
- Install the transaxle oil pan sub-assembly.
A. Install the NEW gasket.
NOTE: Clean the mating surfaces of the transaxle oil pan sub-assembly and the transmission case with wipes to remove grease, moisture and/or dirt (Do NOT use brake cleaner).
B. Tighten the 16 bolts evenly, and temporarily install the transaxle oil pan sub-assembly to the transmission case.
(See Figure 17. Transaxle Oil Pan Bolts: An illustration of the transaxle oil pan with 16 bolt locations marked around its perimeter.)NOTE: Prevent the transmission wiring from being caught between the transmission case and transaxle oil pan sub-assembly by pushing wiring to the center of transaxle.
C. Tighten the 16 bolts.
Torque: 7.8 N*m (80 kgf*cm)D. Mount to overflow tube.
Torque: 1.7 N*m (17 kgf*cm)E. Tighten the overflow plug with the gasket installed.
Torque: 40 N*m (408 kgf*cm) - Refill the CVT fluid.
Refer to TIS, applicable model and model year Repair Manual:
- 2014 / 2015 / 2016 / 2017 Corolla: Drivetrain – CVT – “K313 CVT: Continuously Variable Transaxle Fluid: Replacement”
- Clear the Diagnostic Trouble Codes.
- Using TIS Techstream perform a Health Check and confirm no current DTCs are present.
NOTE: If current DTCs are present, diagnose per Repair Manual procedures. - Test drive the vehicle to confirm proper vehicle operation.
