1. Turn the ignition key to position "OFF".
2. Disconnect the wiring harness from each injector (nozzles).
3. Measure the resistance between the two injector clamps. The correct resistance for everyone is 1.5-2.5 ohms. Any injector not showing the correct resistance should be replaced.
4. Further testing of the injector circuits and wiring is included in the troubleshooting tables.