- multimeter (in voltmeter and ohmmeter mode);
- the wire (1.5-2 m);
- insulating tape.
Execution sequence
1. We prepare the car for work (see "Preparing the car for maintenance and repair"), turn off the ignition. WITH engine 11183 (1,6i) remove decorative trim (see "Engine trim 11183 (1,6i) - removal and installation").
2. Disconnect the pads (1) And (2) injector wiring harness.
3. Turning on the ignition, use a voltmeter to measure the voltage at the supply terminal Ε of the block (2) wiring harness, which must be at least 12 V (conclusions are indicated by letters on the block, "negative" The instrument probe must be connected to "mass" engine).
Warning! Turn off the ignition after the voltage measurement is completed.
Note: If the voltage is not supplied to the block or it is less than 12 V, then the battery is discharged, the power circuit is faulty or the computer is faulty.
4. We check the electrical resistance of the injectors, for which we alternately measure the resistance between the Ε terminal and the remaining four terminals of the block with an ohmmeter (2). The output of the block marked with the letter B corresponds to the injector of the first cylinder, and the outputs C, G and F correspond to the injectors of the second, third and fourth cylinders, respectively. In serviceable injectors, the resistance should be 13 ohms.
Warning! When performing the following operation, do not apply a voltage of more than 12 V to the terminals of the block, and after performing the test, do not leave the terminals energized, as this may lead to burnout of the injector windings.
5. With the help of two wires directly from the battery, we briefly apply to the terminals of the block (2) voltage 12 V - terminal Ε is connected to the positive terminal of the battery, and terminals B, C, G and F are in series with the negative terminal of the battery. A serviceable nozzle should have a characteristic click when the valve is opened.
6. Replace defective nozzles (see "Fuel rail engine 2111 (1,5i) - removal disassembly and installation" or "Fuel rail engine 11183 (1,6i) - removal, disassembly and installation").