Winding resistance test. Switch off the ignition. Disconnect the injector connector, connect an ohmmeter to the injector terminals (pic. 2-130) and check the resistance. which should be within 15-20 ohms.
Checking the supply voltage of the injectors. Switch off the ignition. Disconnect the injector connector, connect the LED probe to the terminals of the cable part of the connector (pic. 2-131) and briefly turn on the starter. In this case, the probe LED should flash. If this does not happen, check the wires and connections between the injectors and the controller.
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