Symptoms - Automatic Transmission

Symptoms - Automatic Transmission

Oil Leakage

Important: Careful localization of leakage points may make it possible to prevent incorrect or cost-intensive repairs.


Test Steps
* Thoroughly clean the transaxle, the engine, and surrounding area. You may use a steam jet for this purpose.
* To locate leakage, use a suitable identifying spray or similar product.
* Depending on the amount of leakage, take the vehicle for a short or a longer test drive. It may prove sufficient to place the car on a hoist and run the engine at idle speed to trance the leak.
* If possible, determine exactly which type of oil is escaping.









Shift Quality

Important: The assessment of shift quality is an individual, subjective matter. Take note of how the customer describes the complaint and how the customer handles the vehicle and the controls.


A sudden deterioration of shift quality may also be caused by the transaxle selecting an emergency or substitute program.


Test Steps
* Perform the general procedures described in the diagnostic section of this book.
* Perform a test drive to answer the following questions:

- Under which driving situations does the shift quality condition arise?
- To which shifts does the condition apply?
- Is the condition reproducible within a short period, or has the condition only occurred sporadically or on a single occasion?

* Inspect the oil level and the oil quality.
* Check the fault memory.





Malfunction

Important: These malfunctions concern transaxle function such as forward and reverse traction, and all types of shifts. Entries will not always be made in the fault memory.


Test Steps

Perform the general procedures according to the automatic transaxle diagnostic procedure:

* Test drive
* Inspect the oil level and quality
* Interrogate fault memory