For 1990-2009 cars

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

• | Refer to 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 and 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.

### Symptom List

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

• | Fluid Diagnosis

- | Transmission Fluid Check

- | Automatic Transmission Fluid Leaks

- | Fluid Leak Diagnosis

• | Noise and Vibration Diagnosis

| Noise and Vibration Analysis

• | Symptom Not Found or No Symptom Detected

- | Transmission Fluid Check

- | Road Test