Toyota 4 Runner/Hilux/Surf

1987-1998 of release

Repair and car operation

Toyota 4Раннер
+ 1. Maintenance instruction
+ 2. Maintenance
+ 3. Engines
+ 4. Systems of heating, ventilation
- 5. Fuel and exhaust systems
   5.1. Specifications
   5.2. Order of a decompression of fuel system
   + 5.3. Fuel pump and pressure of fuel
   5.4. Hoses and connections
   5.5. Fuel tank
   5.6. Fuel pump
   5.7. Fuel level sensor
   5.8. Air filter
   5.9. Butterfly valve cable
   + 5.10. System of electronic injection of fuel (EFI system)
   - 5.11. Units of system of injection of fuel
      5.11.1. Butterfly valve case
      5.11.2. Regulator of pressure of fuel
      5.11.3. Idling regulator (IAC valve)
      5.11.4. Fuel and nozzle distributor
      5.11.5. Leveling chamber
   5.12. Service of an exhaust system
   + 5.13. System of decrease in toxicity of exhaust gases
+ 6. Transmissions
+ 7. Transmission elements
+ 8. Brake system
+ 9. Suspension bracket and steering
+ 10. Body
+ 11. Electric equipment
+ 12. Electroschemes

5.11.3. Idling regulator (IAC valve)



Turns of idling of the engine are established
the manufacturer and at operation in normal conditions of their adjustment does not require. However, if the butterfly valve chamber changed, or there are suspicions that adjustment of turns of idling was broken (for example, the screw of idling was turned out from the butterfly valve chamber), it is necessary to hand over the car in car-care center service.


1. Check regulator work. For this purpose on the diagnostic socket connect a crossing point conclusions of TE1 and Е1. Finish turns to 1300 rpm, later 10 seconds release a zaslonka and check idling turns, – turns should fall to normal (see subsection 2.1).
2. Disconnect a vacuum hose and reliably muffle. Start the engine, – now turns should be 500 rpm, and the engine can decay. If turns are higher, in a regulator is available подсос air.
3. Establish a hose and remove a crossing point.
4. Disconnect from a regulator the socket.
5. Check resistance between pairs of conclusions of +B and RSC, +B and RSO.
6. At a food of conclusions +В and the RSO valve of a regulator should open.
7. If resistance differ from normal, a regulator replace.
8. Check valve operation according to the scheme, observing polarity of connection.
9. At a food of these conclusions the valve of a regulator should be closed.


1. Unscrew screws (are specified by shooters) and remove a regulator and laying. If necessary remove the zaslonka case.
2. If the regulator changes, remove and rearrange the thermovacuum valve on a new regulator (if it is provided).


Installation is carried out upside-down.