Torque Converter Clutch And Drive Plate: Inspection

WARNING: This page is about a different car, the 2008 Toyota Yaris. However, it is still accessible from the selected car via links, so may be relevant.

INSPECT TORQUE CONVERTER CLUTCH ASSEMBLY
1. Inspect the one-way clutch.
  1. Install SST so that it fits into notch of the converter hub and the notch of the outer race of the one-way clutch.
    SST 09350-32014 (09351 -32010, 09351 -32020)
    
    Fig 1: Identifying One-Way Clutch
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  2. Press on the serrations of the stator with a finger and rotate it.
    Check that it rotates smoothly when turned clockwise and locks up when turned counterclockwise.
    
    SST 09350-32014 (09351-32010, 09351-32020)
    
    If necessary, clean the converter and check the one-way clutch.
    
    Replace the converter if the one-way clutch still does not operate as specified.
2. Check the condition of the torque converter clutch assembly.
  1. If the inspection result of the torque converter clutch assembly meets any of the cases mentioned below, replace the torque converter clutch.
    Malfunction Item:
    
    Any metallic sound is heard from the torque converter clutch during stall test or when the shift lever is in the N position.
    
    The one-way clutch is released or locked in both directions.
    
    Fine powder exceeding the sample limit is identified in ATF.
    
    (See the sample.)
    
    HINT:
    
    The sample shows approximately. 0.25 liters (0.26 US qts, 0.22 lmp. qts) of ATF that is taken out from the removed torque converter clutch.
3. Replace the ATF in the torque converter clutch.
  1. If the ATF is discolored and/or has a foul odor, completely stir the ATF in the torque converter clutch and drain it with the installation surface facing up.
    
    Fig 2: Identifying Condition Of Torque Converter Clutch Assembly
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
4. Clean and check the oil cooler and oil pipe line.
  1. If the torque converter clutch is inspected or the ATF is changed, clean the oil cooler and oil pipe line.
    HINT:
    - Spray compressed air of 196 kpa (2 kgf/cm² , 28 psi) from the inlet hose.
    - If excessive fine powder is found in the ATF, add new ATF using a bucket pump and clean it again.
      
      Fig 3: Identifying Oil Cooler And Oil Pipe Line
      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  2. If the ATF is cloudy, inspect the oil cooler (radiator).
    
    Fig 4: Identifying Bolt Condition
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
INSPECT DRIVE PLATE AND RING GEAR
1. Set up a dial indicator and measure the drive plate runout.
  Maximum runout:
  
  0.20 mm (0.0079 in.)
  
  If the runout is not within the specification or the ring gear is damaged, replace the drive plate.
  
  Fig 5: Identifying Drive Plate Runout
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Check the ring gear for damage.