Description of the fuel injection system The fuel injection system consists of three main subsystems: fuel supply, air supply and electronic control. Fuel system Fuel at constant differential pressure (284 kPa) is supplied by the fuel pump through the filter...
Schematic diagram of the fuel injection system Schematic diagram of the fuel injection system (4A-FE): 1 - fuel filter; 2 - fuel tank; 3 - fuel pump; 4 - relay-switch of the fuel pump; 5 - the main relay of the fuel injection system; 6 - battery; 7 - control lamp...
Location on the car of the elements of the injection system Location of fuses and fuse links on the car (model with 4A-FE engine): 1 - connection block No. 1 (fuse box "IGN" And "GAUGE"), 2 - connection block No. 2 (block of fusible inserts "AM" And "ALT" and fuse "EFI"), 3 -...
Electrical Maintenance Precautions 1. Check the correct motor settings (see chapter " Maintenance and general inspection and adjustment procedures "). 2. Precautions when connecting appliances. A) Use the rechargeable battery as a power source for the...
Precautions when working with the air supply system 1. Removing the oil dipstick, oil filler cap, hoses, etc. from the engine. may cause engine misalignment. 2. Disconnection, loosening of fasteners or cracking of elements of the air supply system (between air mass meter...
Precautions when using a mobile radio in your vehicle Structurally, the electronic unit is designed in such a way as to exclude the influence of external electromagnetic interference on it. However, if the vehicle is equipped with a CB radio, etc. (even if the output power...
Precautions when working with an electronic control system 1. Before disconnecting the electrical connectors of the electronic control unit, it is necessary to turn off the electrical power by either the ignition key or by removing the terminals from the battery. Note: Be sure...
Precautions when working with the fuel system 1. When disconnecting the high pressure fuel line, a large amount of fuel is spilled out. Therefore, the following should be done. A) Disconnect the fuel pump connector. b) Start the engine. After the engine stops...
Fuel injection diagnostic system Description The electronic control unit has a built-in self-diagnosis system, which continuously monitors the condition of the engine based on sensor signals. If a malfunction is detected, this system identifies it and...
Diagnostic codes for the electronic control unit Diagnostic codes for the electronic control unit (3S-FE, 3S-GE, 4A-FE, 4S-FE, 5E-FE and 7A-FE) Notes: (1) Symbol "ON' (ON) in the diagnostic mode column means that the warning light is "CHECK* lights up when a fault is...
Troubleshooting with a road test The purpose of the road test is to: A) Play (imitate) driving modes for which this diagnostic code is detected. b) Verify the correctness of the performed repairs, making sure that after performing them, this diagnostic...
Electronic Fuel Injection Control Test Procedure Prerequisites: A) Disconnect the connectors from the electronic control unit. b) Remove the retainers as shown in the figure to allow easy connection of tester probes. Note: be careful with the elements "A" And "IN",...
Fuel pump — check Fuel pump (details and knots): 1 - inlet, 2 and 7 - bearings, 3 - motor armature, 4 - pressure reducing valve, 5 - outlet, 6 - check valve, 8 - magnet, 9 - rotor (impeller), 10 - pump casing Check on the engine 1. Check...
Removing the fuel pump Parts separated when dismantling the pump: 1 - pump bracket assembly, 2 - pump service hatch cover, 3 - rear seat cushion, 4 - pump and fuel gauge sensor connector, 5 - fuel outlet pipe (tightening torque 30 N.m), 6 -...
Dismantling and assembly of the fuel pump Details for disassembly and assembly of the fuel pump: 1 - connector mounting, 2 - connector, 3 - gasket, 4 - wiring, 5 - fuel level sensor, 6 - fuel pump mounting bracket, 7 - fuel hose, 8 - fuel pump, 9 - fuel pump...
Fuel pump installation 1. Install the fuel pump and fuel gauge assembly. A) Install a new gasket to the fuel pump bracket. b) Install the fuel pump and fuel level sensor assembly and tighten the eight bolts. V) Connect the following...
Fuel pressure control Placement of the regulator on the engine and elements of connecting the regulator (4A-FE, 5E-FE, 7A-FE): 1 - fuel pressure regulator, 2 - fuel return hose, 3 - regulator mounting bolt (M3 = 9.3 Nm), 4 - vacuum hose, 5 -...
Checking the fuel injectors on the engine 1. Check the performance of the nozzles by ear. A) With the engine running or when turning it over with a starter, use a phonendoscope to make sure by ear (sound of injected fuel) in the performance of the injectors,...
Removing fuel injectors Removing nozzles (4A-FE, 7A-FE) 1. Disconnect (-) wire from the negative battery terminal. Note: See section above for removal and installation parts " Gasoline engines 4A-FE, 7A-FE ". 2. Drain the coolant. 3....
Checking fuel injectors 1 Inspect the nozzles, check with a match. whether there is dirt on the inlet mesh, if there is, blow it out with air. 2. Check the quality of injection by fuel injectors Note: Avoid sparks during testing. Keep a fire...
Installing fuel injectors 1. Install injectors and fuel manifold. A) Install a new sealing sleeve on the injector (if filmed). b) Apply a thin layer of fuel (lithol) on a new O-ring and install it on the injector. V) Rotate the injectors and...
Cold start injector thermal relay (3S-GE) Scheme of switching on the temporary turn-in of the cold start injector: 1 - cold start nozzle, 2 - to the ignition switch (conclusion "ST1"), 3 - to the fuel pump relay-switch (conclusion "STA"), 4 - thermal relay of...
Checking the throttle body on the car 1. Check the throttle body. A) Check the smoothness of the damper actuator. 3S-FE, 3S-GE, 4S-FE 4A-FE, 7A-FE 5E-FE 6) Check for vacuum in the channels with the engine running by putting your finger on them while the...
Removing the throttle body Parts for removal and installation: 1 - throttle cable, 2 - vacuum hose, 3 - automatic transmission control cable, 4 - gasket, 5 - throttle position sensor connector, 6 - idle speed control valve connector, 7 - air...
Checking the removed throttle body 1. Clean dirty throttle body parts using a soft brush and carburetor cleaner. Using compressed air, blow out all channels and openings. Note: Do not clean the throttle position sensor to avoid damaging it. 2. Check the...
Throttle body installation 1. Install the throttle body. A) (3S-FE, 4S-FE, 5E-FE) Connect the following hoses (see above): Coolant bypass hoses (1); air hose (2); (5E-FE) Air hose from air control valve (3). b) Install a new gasket on the intake...
Valve of the idling speed control system Note: On 5E-FE engines, the idle air control valve function is performed by the auxiliary air valve. Placement on the engine: 1 - throttle body, 2 - idle speed control valve Check on the engine 1. Check valve operation....
Auxiliary air valve Removal and installation of the valve Check on the engine 1. Disconnect the air filter hose from the throttle body. 2. Verify valve operation by measuring RPM while closing valve inlet to throttle body. When the coolant...