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Fuel Injectors

  1. Remove fuel injector cover. Connect an ohmmeter between injector terminals. Injector resistance should be 15.6-16.2 ohms. If not, replace injector. If resistance is okay, disconnect injector connector. Connect voltmeter between connector terminals. Operate starter motor. Voltmeter should indicate 300-700 millivolts, depending on engine temperature.
  2. If voltage is not to specification, connect voltmeter between injector connector terminal No. 1 (Green wire) and ground. If battery voltage is present, see ELECTRONIC CONTROL UNIT - FUEL INJECTION  under COMPUTERIZED ENGINE CONTROLS.
  3. If battery voltage is not present, remove main relay from engine compartment relay base. Connect voltmeter between ground and relay connector terminal No. 4, then between ground and relay connector terminal No. 2. If battery voltage is present in both instances, go to next step. If battery voltage is not present, check relay voltage supply from battery.
  4. Turn ignition on. Reinstall relay in base. Relay should click. If relay does not click, see ELECTRONIC CONTROL UNIT - FUEL INJECTION  under COMPUTERIZED ENGINE CONTROLS.
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