Automatic Transaxle - ZF 4HP 16 - Troubleshooting And Service

• Symptoms - Automatic Transmission
  • Oil Leakage
    • Notes
    • Shift Quality
  • Malfunction
    • Notes
    • Test Steps
• Line Pressure Check
  • Tools Required
• Road Test
  • Notes
  • Upshift Procedure
  • Part Throttle Detent Downshift
  • Full Throttle Detent Downshift
  • Manual Downshifts
  • Coasting Downshifts
  • Manual Gear Range Selection
    • Notes
    • Manual Third (3)
    • Manual Second (2)
    • Manual First (1)
    • Reverse (R)
• Functional Test
• Torque Converter Diagnosis
  • Notes
  • Functional Check Procedure
  • Torque Converter Evaluation
    • Notes
    • Condition A - Poor Acceleration at Low Speed
    • Condition B - Poor Acceleration at High Speed
  • Noise
• Clutch Plate Diagnosis
  • Composition Plates
  • Steel Plates
  • Causes of Burned Clutch Plates
  • Engine Coolant in Transaxle
• Fluid Leak Diagnosis
  • Notes
  • Fluid Level Diagnosis Procedure
  • Fluid Level Set After Service
  • Methods for Locating Leaks
  • Repairing the Fluid Leak
• Case Porosity Repair
• Automatic Transmission Oil Cooler Flushing and Flow Test (Flushing Procedure)
• Automatic Transmission Oil Cooler Flushing and Flow Test (J-35944-A)
  • Notes
  • Tools Required
  • Preparation
  • Back Flush
  • Forward Flush
  • Flow Test
  • Clean-up
• Automatic Transmission Oil Cooler Flushing and Flow Test (J-45096)
  • Notes
  • Cooler Flow Check and Flushing Steps
  • Tools Required
  • Machine Set-up
  • Determine Minimum Flow Rate
  • Back Flush Procedure
  • Forward Flush
  • Flow Test
  • Code Recording Procedure
  • Clean-Up
• Automatic Transmission Fluid Leaks
  • Methods for Locating Leaks
  • Repairing the Fluid Leak
• Harsh Garage Shift
• Torque Converter Clutch Shudder
  • Notes
  • While TCC is Applying or Releasing
  • Shudder Occurs After TCC has Applied
• Transmission Control Module Inputs that Affect the 4HP16 Transaxle
  • Notes
  • Throttle Position Sensor
  • Automatic Transaxle Output (Shaft) Speed Sensor
  • Automatic Transaxle Input (Shaft) Speed Sensor
  • Engine Coolant Temperature Sensor
  • Engine Speed
  • Stoplamp Switch
  • Transaxle Fluid Temperature (TFT) Sensor