Testing Sequence

NOTE: To help locate problems with the automatic transaxle, the following sequence should be followed:

1. Perform Inspection and Verification
This step will help find possible problems that are obvious, easy to check, and easy to repair.

2. Perform Quick Test
This test checks the transmission control module for Diagnostic Trouble codes related to electronic failures within the automatic transaxle. Refer to 4EAT Quick Test Procedures. For a summary of the 4EAT Transaxle Repair Process, refer to the Flow Of Diagnosis flowchart.

3. Review Symptom Chart
This step provides basic direction for test procedures. The symptom chart only covers conditions that are easy to relate to a customer complaint. More detailed symptoms are covered in the Road Test section of the Diagnosis and Testing procedures to isolate problems found while driving, or for problems that need specific analysis. Follow the direction given in the "Action to Take" column. Directions are given in a recommended order of testing.

4. Perform Operational Tests
This test determines the causes of most basic problems that may exist. Follow the directions given to repair any faults. When directed to perform Operational Tests and Road Test for the same symptom, always perform Operational Tests first; this action will prevent causing possible damage to the automatic transaxle during driving.

5. Perform Road Test
This test is an evaluation of the automatic transaxle while driving. Service or inspection of the automatic transaxle during this test may involve major disassembly, therefore, the Road Test should always be done last. The powertrain may also show conditions during the Road Test that can cause automatic transaxle malfunction, or be confused with automatic transaxle conditions. If no conditions are found during this test, the condition might be intermittent. Since the condition may not recur, the symptom should be evaluated with the customer present.

NOTES: After any repair is made, re-test the automatic transaxle to verify if the symptom is still present. If the symptom recurs, further testing must be performed to isolate the condition. Any time fluid is drained from the automatic transaxle, be certain the proper type and amount of fluid is replaced.

Engine problems or driveline problems can affect automatic transaxle performance; therefore, other systems may have to be serviced before the automatic transaxle, such as the engine or front wheel driveshaft and joints.