- Symptoms - Automatic Transmission

Symptoms - Automatic Transmission

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

* Refer to Diagnostic Starting Point - Vehicle (Initial Inspection and Diagnostic Overview).
* 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 (Component Tests and General Diagnostics).

Symptom List

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

* Fluid Diagnosis

- Transmission Fluid Check (Transmission Fluid Check)
- Main Fluid Pump Pressure High or Low (Main Fluid Pump Pressure High or Low)
- Auxiliary Fluid Pump Pressure High or Low (Auxiliary Fluid Pump 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, or Reverse Gear (Noise in First, Second, Third, Fourth, or Reverse Gear)
- Noise in First, Second, or Reverse Gear (Noise in First, Second, or Reverse Gear)
- Noise in Fourth Gear (Noise in Fourth Gear)
- Vibration (Vibration)
- 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)
- No Drive or Reverse Gear (No Drive or 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 Reverse Gear (Harsh, Soft, Delayed, or Slipping Reverse Gear)

* Shift Pattern

- No First Gear (No First Gear)
- No First and Reverse Gears (No First and Reverse Gears)
- No First, Second, Third, or Fourth Gear (No First, Second, Third, or Fourth Gear)
- No First, Second, or Reverse Gear (No First, Second, or Reverse Gear)
- Stuck in First or Reverse Gear (Stuck in First or Reverse Gear)

* Symptom Not Found or No Symptom Detected

- Transmission Fluid Check (Transmission Fluid Check)
- Road Test (Initial Inspection and Diagnostic Overview)
- Line Pressure Check (Line Pressure Check)