Automatic Transaxle - 4T80-E
- Specifications
- Schematic Wiring Diagrams
- Component Locator
- Visual Identification
- Diagnostic Information and Procedures
- Diagnostic Starting Point - Automatic Transmission
- Diagnostic System Check - Automatic Transmission
- Scan Tool Output Controls
- Transmission Scan Tool Data List
- Transmission Scan Tool Data Definitions
- Diagnostic Trouble Code (DTC) Type Definitions
- Diagnostic Trouble Code (DTC) List/Type
- DTC P0218: Transmission Fluid Temperature High
- DTC P0502: Low Vehicle Speed With High Transmission Input Shaft Speed
- DTC P0503: Vehicle Speed Signal
- DTC P0711: Intermittent Voltage Or No Voltage Change Ine TFT Sensor Circuit
- DTC P0712: TFT High
- DTC P0713: TFT Low
- DTC P0716: Input Shaft Speed Drops By 1,000 Rpm Or Greater For At Least 1 Second
- DTC P0717: Transmission Input Shaft Speed Is 50 RPM Or Less For 6 Seconds
- DTC P0719: Open TCC Brake Switch, Stuck ON, During Accelerations
- DTC P0724: Closed Tcc Brake Switch, Stuck OFF, During Decelerations
- DTC P0731: Gear Ratio
- DTC P0732: Gear Ratio
- DTC P0733: Gear Ratio
- DTC P0734: Gear Ratio
- DTC P0741: TCC Slip Speed Exceeds Its Limit
- DTC P0742: TCC Slip From -20 To + 150 RPM, When TCC Is Commanded OFF
- DTC P0748: PC Solenoid Valve Feedback Circuit Short To Ground Or Short To Voltage
- DTC P0751: Gear Ratio
- DTC P0752: Gear Ratio
- DTC P0756: Gear Ratio
- DTC P0757: Gear Ratio
- DTC P1811: Shift Timing
- DTC P1814: High Throttle Angle And Low Vehicle Speed When Is In DRIVE or REVERSE
- DTC P1820: IMS Indicates A Transitional State Between D4 And D3 For 5 Seconds
- DTC P1822: IMS Indicates A Transitional State Between D2 And D1 For 5 Seconds
- DTC P1823: IMS Indicates A Transitional State Between NEUTRAL And D4 For 5 Seconds
- DTC P1825: Invalid IMS Range For 5 Seconds
- DTC P1842: Open Or Short To Ground In The 1-2 SS Valve Circuit
- DTC P1843: Short To Voltage In The 1-2 SS Valve Circuit
- DTC P1845: 2-3 SS Valve Feedback Circuit Open Or Short To Ground
- DTC P1847: 2-3 SS Valve Feedback Circuit Open Or Short To Ground
- DTC P1860: Open, Short To Ground Or Short To Voltage In TCC PWM Solenoid Valve Circuit
- DTC P1868: Calculated Transmission Oil Life Remaining Is 10 Percent Or Less
- Symptoms - Automatic Transmission
- Range Selector Displays Incorrect Range
- Harsh Garage Shift or Engine Hesitation on Acceleration
- Transmission Fluid Checking Procedure
- Line Pressure Check Procedure
- Road Test Procedure
- Torque Converter Diagnosis Procedure
- Flexplate/Torque Converter Vibration Test
- Noise and Vibration Analysis
- Clutch Plate Diagnosis
- Engine Coolant in Transmission
- Fluid Leak Diagnosis
- Case Porosity Repair
- Line Pressure Adapter and Gage Installation
- Shift Solenoid Leak Test
- Automatic Transmission Oil Cooler Flushing and Flow Test
- Automatic Transmission Fluid Leaks
- Harsh Shifts
- Low Line Pressure
- Second Gear Starts
- Transmission Slips in Reverse
- Soft Shifts
- No First Gear D2, D3, D4
- No Second Gear D2, D3
- No Third Gear - D3
- No Fourth Gear
- No First Gear
- Inconsistent Shifts
- Third and Fourth Gears Only
- No Engine Braking
- No Overrun Braking in D3
- No Overrun Braking in D2
- No Engine Braking in D1
- Forward Motion in N
- Engine Stall
- Loss of Power
- Loss of Drive
- Engine Starts in Gear
- No Gear Selection
- Shift Lever Indicates Wrong Gear
- No Torque Converter Clutch (TCC) Apply
- Soft Torque Converter Clutch (TCC) Apply
- Early Torque Converter Clutch (TCC) Engagement
- Torque Converter Clutch (TCC) Not Disengaging
- Converter Ballooning
- No Torque Multiplication
- No Reverse
- Does Not Stay in Park
- Extended or Delayed Upshifts
- Noise in All Ranges
- Whine Noise Varying with RPM or Fluid Pressure
- 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 First, Second, Third, or Fourth
- Vibration Diagnosis
- Fluid Foaming
- Repair Instructions
- Description and Operation
- Special Tools and Equipment