Fuel injection engine Toyota Corolla 5 (E80)

EFI fuel injection system
Some TOYOTA COROLLA models are equipped with an electronically controlled fuel injection system. The regulation process is carried out by the control unit. The control unit receives the necessary information from the...

Safety precautions when working with the injection system
Do not start the engine without a secure battery connection. Do not use fast chargers to start the engine. Do not disconnect the battery while the engine is running. Disconnect the battery from the on-board network when...

Schematic diagram of the EFI fuel injection system
Scheme of the fuel injection system EFI engine displacement of 1.3 liters The figure does not show: Control block. Location in the cabin behind the center console. Box with activated carbon and magnetic valve. Location...

Elements of the fuel injection system
Elements of the fuel injection system for engines with a working volume of 1.7 liters and 1.8 liters

Reading faults from computer memory
If a malfunction occurs in the fuel supply system, a signal lamp lights up on the front panel. At the same time, the control unit switches to emergency operation and continues to record faults. The fault can be read...

Injection system fault codes
code no Corresponding element of the system — No faults 11 No power to control unit 12 No engine speed signal 13 There is no signal about the number of revolutions over 1500 rpm. 14 No ignition signal 21 No signal from...

Idling check
Check conditions: The air filter must be installed, all hoses and pipes of the air intake system must be connected. Start and warm up the engine. The engine oil temperature must be at least 80°C. Turn off all electrical...

Checking the CO concentration
Attention: For vehicles with a catalyst, the CO concentration is not regulated. Test conditions: Check the exhaust system. To do this, close the end of the exhaust pipe with a rag. All pipe connections must be sealed....

Checking the cold start valve
The cold start valve is checked if the engine starts poorly and picks up speed when cold. Disconnect injection plug connection. Connect an ohmmeter and measure the resistance of the cold start valve. The resistance must...

Checking the injection valve
The injection valve injects fuel in portions, that is, for each revolution of the crankshaft, half of the fuel required to complete the working cycle is injected. In this case, the shape of the injected fuel has a cone...

Removal and installation of the injection valve
Removing Disconnect ground cable (-) from the battery. Attention: As a result, entries in the memory of the on-board computer are erased, in particular, the fault record and the radio code. Before disconnecting the...

Fuel pump check
If the engine starts poorly or does not start at all, and also stalls while the car is moving, it is necessary to check the operation of the fuel pump. The fuel pump is located in the fuel tank. You can check its...

Fuel pressure check
The fuel pressure is checked if the engine starts poorly or does not start at all and if the engine runs rough or stalls. Test conditions: The battery must be fully charged (12 V). The fuel filter must be clean. Check...

Injection system malfunctions
Before diagnosing the injection system, the following conditions must be met: There are no errors in the engine control during start-up. When starting both a cold and a warm engine, it is necessary to lightly press the...