Note: Due to the complexity of the automatic transmission, it is beyond the power of the vehicle owner to inspect and maintain it. For troubleshooting not described below, the vehicle must be taken to dealers or an automatic transmission specialist. Do not rush to remove the transmission if you suspect a malfunction, since most checks are made without removing it from the car.
Transmission fluid leak
- Transmission fluid is usually dark in color. Leaks should not be confused with engine oil, which can be easily carried into the transmission by airflow.
- To determine the source of the leak, remove all dirt from the gearbox housing and surrounding area with steam or a degreaser. Drive the vehicle at a low speed so that the air flow does not carry the leaking fluid away from the source of the leak. Raise and support the vehicle and locate the leak. Most common leak locations:
- A) Joints with the body (Chapter 1 and 7B).
- b) Dipstick nozzle (Chapter 1 and 7B).
- V) Transmission Pipes/Connections to Fluid Cooler (Chapter 3 and 7B).
- G) Sealing ring of a gear wheel of a drive of a speedometer (Chapter 7B).
- d) Leakage of gear oil from the cuffs at the outlet of the differential (Chapter 7B).
Transmission fluid is brown or has a burnt odor
- Low transmission fluid or need to change (Chapter 1).
- See chapter 7B, which describes the procedure for checking and adjusting the automatic transmission selector cable.
Downshift does not engage when the throttle pedal is fully depressed
- Low transmission fluid (Chapter 1).
- Incorrect adjustment of the selector cable (Chapter 7B).
- Malfunction of the engine management system (Chapters 1, 4, 5, 6).
The main malfunctions in the gear selection mechanism
IN chapter 7B describes the procedure for checking and adjusting the automatic transmission selector cable. The most common malfunctions caused by a poorly adjusted selector:
- A) Starting the engine in gears other than"Park" or "Neutral".
- b) Inconsistency of the indication of the inclusion of any gear with the actually engaged gear.
- V) The vehicle is moving while the mode is on "Park"or "Neutral".
- G) Unreliable or incorrect gear shifting. See selector cable adjustment. chapter 7B.
Engine does not start in gear, or starts in gears other than Park or Neutral
- Incorrect installation of the selector lever position microswitch (Chapter 7B).
- Incorrect adjustment of the selector cable (Chapter 7B).
Transmission slippage, rough shifting, noise or no rotation in forward or reverse gears
There are many possible causes of the above malfunctions, but the car owner can only do one - the fluid level. Before sending the car to a service station, check the level and condition of the fluid (see chapter 1). Add or replace fluid as needed. Check with the on-board troubleshooter as recommended in chapter 7B. If you cannot fix the problem, contact a specialist.
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