Automatic Transmission Troubleshooting

• Troubleshooting
  • Symptoms - Automatic Transmission
  • Sport Mode Switch/Indicator Always On or Inoperative
    • Notes
    • Circuit Description
    • Diagnostic Aids
    • Test Description
  • Winter Mode Switch/Indicator Always On or Inoperative
    • Notes
    • Circuit Description
    • Diagnostic Aids
    • Test Description
  • 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 During TCC Apply or Release
    • If Shudder Occurs After TCC has Applied
  • Flexplate/Torque Converter Vibration Test
    • Isolating Vibration
    • Indexing Torque Converter
  • Noise and Vibration Analysis
  • Buzz Noise or High Frequency Rattle Sound
  • Whine Noise Varying with RPM or Fluid Pressure
  • Popping Noise
  • Noise in Random Ranges
  • Clutch Plate Diagnosis
    • Composition Plates
    • Steel Plates
    • Causes of Burned Clutch Plates
  • Engine Coolant/Water in Transmission
  • Fluid Leak Diagnosis
    • Notes
    • 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
  • Automatic Transmission Oil Cooler Flushing and Flow Test (J45096)
    • 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 (J35944 A)
    • Notes
    • Preparation
    • Back Flush
    • Forward Flush
    • Flow Test
    • Clean-up
  • Slips or Shudders in First Gear
  • No Drive in All Ranges
  • No First Gear
  • First Gear Only
  • No Second Gear
  • First and Second Gears Only
  • First, Fourth, and Fifth Gears Only
  • Second and Third Gears Only
  • No Third Gear
  • No Fourth Gear, or Slips in Fourth Gear
  • Fifth Gear Only
  • Harsh Shift 4 to 5, or 5 to 4
  • Harsh Shift D to R
  • Harsh Shifts
  • Harsh Torque Converter Clutch (TCC) Apply
  • No Engine Braking in First, Second, and Third Gear
  • No Engine Braking in First Gear
  • No Engine Braking in Second Gear
  • No Engine Braking in Third Gear
  • Inaccurate Shift Points
  • No Fifth Gear
  • No Reverse or Slips in Reverse
  • Slips while Shifting
  • Degraded 1-2 and 2-1 Shifts
  • Degraded 2-3 and 3-2 Shifts
  • Degraded 4-5 Shift
  • Drives with Selector Lever in Position N
  • No Engagement of Torque Converter Clutch (TCC)
  • Fluid Pressure High or Low
  • No Engine Braking
  • Automatic Transmission Overheating