Canada - A/T - A/T Torque Converter Shudder

Bulletin
TSB3004

Issue Date
June 11, 2008

Market
Canada

Title
Torque Converter Shudder

Component
AUTOMATIC TRANSMISSION & TRANSAXLE

Models
'07-'08 Camry, '08 Avalon

INTRODUCTION

Some customers may be concerned about an intermittent shudder when lightly accelerating after an upshift around the following speeds: 42 km/h (4th), 58 km/h (5th) and/or 71 km/h (6th). Production changes to the torque converter assembly have been implemented to improve this condition. Refer to the repair procedure below for the diagnostic instructions to confirm if the torque converter needs to be replaced to address customer concerns.






APPLICABLE VEHICLES:






PRODUCTION CHANGE INFORMATION:






WARRANTY INFORMATION:






PARTS INFORMATION:

NOTE
Please see TSB2644, "Transaxle Fluid Level", for additional information regarding transaxle fluid level inspection including the need to add an additional 200 ml after completing the regular procedure.






REQUIRED SSTS:

REPAIR PROCEDURE:

1. Connect techstream to the vehicle and perform Health Check. Confirm NO DTC(s) are stored in the ECT or ECM (SAE term: Powertrain Control Module/PCM). Are there any DTC(s) present in the ECT or ECM (PCM)?
- YES - This TSIB does NOT apply. Refer to the Technical Information System (TIS) and diagnose DTC(s).
- NO - Go to Step 2.

2. Test drive the vehicle and confirm customer complaint of shudder.
3. Use Techstream to take a snapshot when shudder is occurring to determine if it's occurring during flex lockup.


Configure snapshot as follows:
All Data
30 Second Duration
Trigger Point at Midpoint (50%)

NOTE: For more assistance on how to graph Saved Techstream data refer to Toyota Academy Online training and review OP6A-OL: Techstream - In Depth







4. Use Data List and the graphing functions of the Snapshot feature to confirm the following data parameters when the shudder condition occurs:
- Vehicle Speed
- Shift Status
- Lock Up
- Lock Up Solenoid Status
- SLU Solenoid Status

- If the shudder occurs with the following parameters:
- Lock Up "OFF"
- Lock Up Solenoid Status "ON"
- SLU Solenoid Status "ON"

Then the shudder is related to torque converter flex lockup. Go to step 5.

- If the shudder occurs with the following parameters:
- Lock Up "OFF"
- Lock Up Solenoid Status "OFF"
- SLU Solenoid Status "OFF"

Then the condition is NOT related to torque converter flex lockup and this TSB DOES NOT APPLY. Continue diagnosis to identify the root cause for this shudder.

5. Replace the torque converter.

NOTE
Refer to TSB2556, "U660E 6-Speed Torque Converter", to ensure proper installation of the torque converter assembly.


Refer to the Repair Manual within E-TAS / TIS library:
- Division: Toyota
- Model: Camry or Avalon
- Year: 2007 or 2008 or 2009
- Service Category: Drivetrain
- Section: Automatic Transmission/Transaxle "
- Keyword: U660E Automatic Transaxle: Torque Converter Clutch and Drive Plate: Removal and Installation

6. Adjust the transmission fluid level in the transmission.

Refer to TSB2644, "Transaxle Fluid Level", to properly adjust the transaxle fluid level.

NOTE
Failure to use WS transmission fluid and to properly adjust transmission fluid level can cause transmission shifting issues, M.I.L. "ON", and/or transmission damage.

7. Test drive the vehicle and confirm the shudder condition is eliminated.

NOTE:
Issue of this Technical Service Bulletin is to ensure that proper repair information is available. IT DOES NOT CONSTITUTE AN AUTHORIZATION FOR REPAIR. Normal provisions of the formal warranty policy, as applicable, will apply.