When the engine does not start
1. Disconnect the fuel injector connector and measure the resistance between the injector terminals.
- Standard resistance: 10-13Δ
If the resistance is different from the specified value, replace the fuel injector (see below).
If the injectors are OK, perform the following check and if no faults are found, check the control unit (see above).
- Short circuit or break in the electrical wiring between the fuel injector and the connector, reliability of the connector connection.
- Short circuit or break in electrical wiring between the fuel injector and the control unit, reliability of the connector connection.
- Short circuit or break in yellow-black electrical wiring on the power source side.
When the engine starts
1. At idle speed, disconnect the fuel injector connector on one cylinder and check the change and stability of idle speed.
If the idle speed changes, then the injector is working properly.
Replace the fuel injector on the cylinder where disconnecting the connector did not change the idle speed and repeat the test.
2. Using a phonendoscope (if you don"t have one, use a mounting screwdriver), listen to the sound of each fuel injector.
If there is no sound, replace the injector and repeat the test. If the injectors are OK, perform the following test and if no faults are found, check the control unit (see above).
- Short circuit or break in the electrical wiring between the fuel injector and the connector, reliability of the connector connection.
- Short circuit or break in electrical wiring between the fuel injector and the control unit, reliability of the connector connection.
- Short circuit or break in yellow-black electrical wiring on the power source side.