Section 12 (Automatic Transaxle - 4T45-E - Service, Diagnosis & Troubleshooting)

• Symptoms - Automatic Transmission
• Transmission Fluid Checking Procedure
• Line Pressure Check Procedure
• Road Test Procedure
  • Notes
  • Electrical Function Check
  • Upshift Control and Torque Converter Clutch (TCC) Apply
  • Part Throttle Detent Downshift
  • Full Throttle Detent Downshift
  • Manual Downshifts
  • Coasting Downshifts
  • Manual Gear Range Selection
• Torque Converter Diagnosis Procedure
  • Notes
  • Torque Converter Stator
  • Poor Acceleration at Low Speed
  • Poor Acceleration at High Speed
  • Noise
  • Torque Converter Clutch Shudder
  • If Shudder Occurs After TCC has Applied
  • Torque Converter Evaluation and Diagnosis
• Noise and Vibration Analysis
• Clutch Plate Diagnosis
  • Composition Plates
  • Steel Plates
  • Causes of Burned Clutch Plates
• Engine Coolant/Water in Transmission
• Fluid Leak Diagnosis
  • General Method
  • Powder Method
  • Dye and Black Light Method
  • Find the Cause of the Leak
  • Possible Points of Fluid Leaks
• Case Porosity Repair
• Shift Solenoid Leak Test
  • Tools Required
  • Leak Test Procedure
• Automatic Transmission Oil Cooler Flushing and Flow Test (J 45096)
  • Notes
  • Cooler Flow Check and Flushing Steps
  • Machine Set-up
  • Determine Minimum Flow Rate
  • Back Flush Procedure
  • Forward Flush
  • Flow Test
  • Code Recording Procedure
  • Clean-up
• Automatic Transmission Oil Cooler Flushing and Flow Test (SA9165T)
  • Notes
  • Preparation
  • Back Flush
  • Forward Flush
  • Flow Test
  • Clean-up
• Automatic Transmission Fluid Leaks
• High or Low Line Pressure
• Inaccurate/Inconsistent Shift Points
• Harsh Shifts
• No Reverse or Slips in Reverse
• No First Gear, Slips in First Gear
• No Second Gear, Slips in Second Gear
• No Third Gear, Slips in Third Gear
• Second Gear Only
• No Fourth Gear, or Slips in Fourth Gear
• Loss of Drive
• Loss of Power
• Engine Stall
• First and Second Gears Only
• Third and Fourth Gears Only
• First and Fourth Gears Only
• Second and Third Gears Only
• No Park
• Ratcheting Noise
• No Engine Braking; All Manual Ranges
• No Engine Braking; Manual Second - Second Gear
• No Engine Braking; Manual First - First Gear
• Drives in Neutral
• No Gear Selection
• Shift Indicator Indicates Wrong Gear Selection
• Fluid Foaming
• Vibration
• Whine Noise Varying with RPM
• High Pitch Whine Noise
• Popping Noise
• Buzz Noise or High Frequency Rattle Sound
• Whine/Growl Noise That Changes with Vehicle Speed
• Final Drive Noise or Hum Noise
• Noise in Random Ranges
• Noise in First, Second, Third, or Fourth
• No Torque Converter Clutch (TCC) Release
• Torque Converter Clutch (TCC) Apply with Cold Engine
• Torque Converter Clutch (TCC) Shudder