Road Test: Notes
NOTE:
The Road Test Procedure should be performed only as part of the Symptom Diagnosis. Refer to SYMPTOMS - AUTOMATIC TRANSMISSION .
The following test provides a method of evaluating the condition of the automatic transmission. The test is structured so that most driving conditions would be achieved. The test is divided into the following parts:
- Visual Inspection of Transmission Fluid Leaks
- Electrical Function Check
- Adaptive Learning
- Confirm Customer Complaint by Driving
- Check Oil Level and Oil Quality
NOTE:
Complete the test in the sequence given. Incomplete testing cannot guarantee an accurate evaluation.
Before the road test, ensure the following:
- The engine is performing properly.
- Tire pressure is correct.
- Vent hose is correctly mounted
During the road test:
- Perform the test only when traffic conditions permit.
- Operate the vehicle in a controlled, safe manner.
- Observe all traffic regulations.
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NOTE: Take along qualified help in order to operate the vehicle safely.
View the scan tool data while conducting this test.
- Observe any unusual sounds or smells.
After the road test, check the following:
- Inspect for proper transmission fluid level and check oil quality. Refer to TRANSMISSION FLUID LEVEL AND CONDITION CHECK .
- Inspect for any diagnostic trouble codes (DTCs) that may have set during the testing. Refer to the applicable DTC.
- Monitor the scan tool data for any abnormal readings or data.
- Inspect for fluid leaks. Refer to OIL LEAK DIAGNOSIS .