Repair and operation of the TOYOTA 4-RUNNER car - 5.3.4. Check of the main relay of system of injection of fuel (EFI) and relay of the fuel pump//Toyota 4ranner 1987-1998 /

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
   5.1. Specifications
   5.2. Order of a decompression of fuel system
   - 5.3. Fuel pump and pressure of fuel
      5.3.1. Check of the pump
      5.3.2. Check of pressure of fuel
      5.3.3. Check of the regulator of pressure of fuel
      5.3.4. Main relay of system of injection of fuel (EFI) and relay of the fuel pump
   5.4. Hoses and connections
   5.5. Fuel tank
   5.6. Fuel pump
   5.7. Fuel level sensor
   5.8. Air filter
   5.9. Cable of a butterfly valve
   + 5.10. System of electronic injection of fuel (EFI system)
   + 5.11. Units of system of injection of fuel
   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





5.3.4. Check of the main relay of system of injection of fuel (EFI) and relay of the fuel pump

GENERAL INFORMATION

Check of the main relay of injection


A. Between conclusions there has to be a chain

B. Gap

PERFORMANCE ORDER
1. The electric chain of fuel system switched on two relays – the EFI relay and the relay of the pump. The EFI relay is mounted in the relay block in a motor compartment, the relay of the pump is under the forward panel. At first check existence of tension from the battery on the main relay, and then for the relay of the fuel pump.
2. Disconnect the main relay from the socket, then include ignition (the engine do not start) and check existence of tension from the battery on a place of its connection.
3. If tension from the battery is, put the main relay on a place and check existence of tension from the battery for the relay of the fuel pump.
4. If tension from the battery is present on both relays, check relays.

Main EFI relay

PERFORMANCE ORDER
1. An ohmmeter check existence of a chain between conclusions 1 and 2 and 3 and 4.
2. On conclusions 1 and 2 give tension from the battery. Now between conclusions 3 and 4 there has to be a closed chain. If results of tests differ, replace the relay.

Check of the relay of the fuel pump

Arrangement of the relay of the fuel pump on and/m Toyota 4 Runner/Hilux/Surf

Check of the relay of the fuel pump

A. Between these conclusions there has to be a chain

B. Gap

PERFORMANCE ORDER
1. An ohmmeter check integrity of a chain between contacts according to the scheme.
2. On conclusions 1 and 2 give tension from the battery. Now between conclusions 3 and 4 there has to be a closed chain. If results of tests differ, replace the relay.