Toyota 4 Runner/Hilux/Surf

1987-1998 of release

Repair and operation of the car

Toyota 4ranner
+ 1. Maintenance instruction
+ 2. Maintenance
+ 3. Engines
+ 4. Systems of heating, ventilation
+ 5. Fuel and exhaust systems
- 6. Transmissions
   + 6.1. Mechanical transmission
   - 6.2. Automatic transmission
      6.2.1. Specifications
      6.2.2. Diagnostics of transmission
      6.2.3. Gate drive cable
      6.2.4. Draft of transmission
      6.2.5. The blocking switch
      6.2.6. System of fixing of transfers
      6.2.7. Lever of change of transfers
      6.2.8. Removal and installation of transmission
   + 6.3. Transfer case
+ 7. Transmission elements
+ 8. Brake system
+ 9. Suspension bracket and steering
+ 10. Body
+ 11. Electric equipment
+ 12. Electrical circuitries


6.2.2. Diagnostics of transmission



Malfunction of the engine (loss of power), the wrong adjustments, refusals of hydraulic system of transmission, the mechanical drive and processor control system can be the main reasons for abnormal work of transmission. First of all it is necessary to check the level and a condition of liquid, to adjust drafts. If these measures do not result in positive result, then it is necessary to address to car service.

Preliminary checks

1. Check the level and a condition of liquid. If level is higher than norm, then check pollution existence by cooling liquid which could get because of leak in a radiator. If spumescence is found, then replace liquid.
2. Check turns of idling of the engine. If necessary execute repair and adjust as further checking of transmission does not make sense.
3. Believe operation of the mechanical drive of transmission.

Check of a state on liquid leak

1. The liquid leak easily is established on dark red color and is eliminated with replacement of epiploons or laying. For detection of a noticeable leak park the car after a trip on several km over the blank sheet of a cardboard or paper. About 2 min. later to flow it is possible to find. If a leak weak, then carefully clear a case and check places of consolidations after a trip.
2. If the place of a leak is established, then define the reason of a leak and a way of repair (for example it is impossible to eliminate with replacement of laying a leak if the demountable planes of a sdeformirovana).
3. Before elimination of a leak analyse the reasons of a leak and define the nature of repair work as the set of types of repair independently cannot be executed.

The leak from under laying can be a consequence of increase in pressure or level of liquid owing to a contamination of air vents, deformation of the pallet or its demountable plane, discrepancy of the applied brand of sealant recommended of defects of casting of the pallet. Check periodically tightness of consolidation of a branch pipe of the index and a reducer of a speedometer.

The leak from under an epiploon can be caused increases in pressure or level of liquid owing to a contamination of air vents, the wrong installation of an epiploon, injury of the condensed neck of a shaft or wear of the bearing of a shaft.

The leak of a case is caused by defects of casting. Check reliability of fastening of hoses of a cooler of liquid.

The leak from a sapun indicates overflow of transmission, hit of cooling liquid, porosity of material of a case, the wrong provision of the index, a contamination of ventilating and drainage channels.