Symptoms - Automatic Transmission

Symptoms - Automatic Transmission

Important: Use the symptom tables only if the following conditions are met:


* Refer to Diagnostic Starting Point - Vehicle Diagnostic Starting Point - Vehicle.

* There are no DTCs set.

* The control modules can communicate via the serial data link.

* Review the system operation in order to familiarize yourself with the system functions. Refer to Transmission General Description Transmission General Description and Transmission Component and System Description Transmission Component and System Description.


Visual/Physical Inspection

Inspect the easily accessible or visible system components for obvious damage or conditions which could cause the symptom.

Intermittent

Faulty electrical connections or wiring may be the cause of intermittent conditions. Refer to Testing for Intermittent Conditions and Poor Connections Testing for Intermittent Conditions and Poor Connections.

Symptom List

Refer to a symptom diagnostic procedure from the following list in order to diagnose the symptom:

* Fluid Diagnosis

- Transmission Fluid Level and Condition Check Transmission Fluid Level and Condition Check
- Fluid Pressure High or Low Fluid Pressure High or Low
- Automatic Transmission Fluid Leaks Automatic Transmission Fluid Leaks
- Fluid Leak Diagnosis Fluid Leak Diagnosis

* Noise and Vibration Diagnosis

- Whine/Growl Noise That Changes with Vehicle Speed Whine/Growl Noise That Changes with Vehicle Speed
- Noise in First or Reverse Gear Noise in First or Reverse Gear
- Noise in First, Second, Third, Fourth, Fifth, or Reverse Gear Noise in First, Second, Third, Fourth, Fifth, or Reverse Gear
- Noise in First, Second, Sixth, or Reverse Gear Noise in First, Second, Sixth, or Reverse Gear
- Noise in Second or Sixth Gear Noise in Second or Sixth Gear
- Noise During 3-4 or 4-3 Shifts Noise During 3-4 or 4-3 Shifts
- Noise in Fourth, Fifth, or Sixth Gear Noise in Fourth, Fifth, or Sixth Gear
- Vibration Vibration
- Vibration in Second, Third, Fourth, Fifth, or Sixth Gear Vibration in Second, Third, Fourth, Fifth, or Sixth Gear
- Flex Plate/Torque Converter Vibration Test Flex Plate/Torque Converter Vibration Test
- Noise and Vibration Analysis Noise and Vibration Analysis

* Range Performance Diagnosis

- No Park or Drive No Park or Drive
- No Drive in All Ranges No Drive in All Ranges
- No Reverse Gear No Reverse Gear

* Shift Quality Feel Diagnosis

- Harsh Garage Shift Harsh Garage Shift
- Harsh, Soft, Delayed or Slipping First or Reverse Gear Harsh, Soft, Delayed or Slipping First or Reverse Gear
- Harsh, Soft, Delayed or Slipping 1-2-3-4 Shift Harsh, Soft, Delayed or Slipping 1-2-3-4 Shift
- Harsh, Soft, Delayed or Slipping 4-5-6 Shift Harsh, Soft, Delayed or Slipping 4-5-6 Shift
- Harsh, Soft, Delayed or Slipping Third, Fifth, or Reverse Gear Harsh, Soft, Delayed or Slipping Third, Fifth, or Reverse Gear
- Harsh, Soft, Delayed or Slipping Second or Sixth Gear Harsh, Soft, Delayed or Slipping Second or Sixth Gear

* Shift Pattern

- No First Gear No First Gear
- No First and Reverse Gears No First and Reverse Gears
- No First, Second, Third, and Fourth Gear No First, Second, Third, and Fourth Gear
- No Second and Sixth Gear No Second and Sixth Gear
- No Fourth, Fifth, and Sixth Gear No Fourth, Fifth, and Sixth Gear
- No Third, Fifth, and Reverse Gear No Third, Fifth, and Reverse Gear

* Torque Converter Diagnosis

- Torque Converter Diagnosis Torque Converter Diagnosis
- No Torque Converter Clutch Apply No Torque Converter Clutch Apply
- No Torque Converter Clutch Release No Torque Converter Clutch Release

* Symptom Not Found or No Symptom Detected

- Transmission Fluid Level and Condition Check Transmission Fluid Level and Condition Check
- Road Test Road Test
- Line Pressure Check Line Pressure Check