Codes 14, 15, 16, 17, 18 & 19 - Fuel Injectors

NOTE: Refer to illustration for ECM connector terminal identification. See Figure .

While cranking engine, ensure operating sound is heard at each injector. If operating sound is heard, check system fuel pressure. See the BASIC TESTING article. If operating sound is not heard, check power supply to each injector. Turn ignition off. Disconnect connector from each injector. Turn ignition on.
Using a DVOM, check voltage between each injector connector terminal No. 2 (White/Red wire) and ground. Reading should be at least 10 volts at each terminal. If voltage is as specified, go to next step. If voltage is not as specified, repair appropriate circuit as necessary.
Turn ignition off. Using an ohmmeter, check resistance for each injector. Resistance should be 11-12 ohms. If resistance is as specified, go to next step. If resistance is not as specified, replace appropriate injector.
Turn ignition off. Connect each fuel injector connector. Turn ignition on. Using a DVOM, check voltage between ground and ECM connector terminals D11, D12, D13 and D26. Check voltage between ground and ECM connector terminals A1 and A12. Reading should be at least 10 volts for each injector. If voltage is as specified, go to next step. If voltage is not as specified, repair appropriate circuit as necessary.
Turn ignition off. Disconnect ECM connector. Using an ohmmeter, check resistance between ground and ECM connector terminals D24 and D25. Resistance should be zero ohms. If resistance is not as specified, repair appropriate circuit as necessary. If resistance is as specified, check ECM connector terminals for good contact. Repair as necessary. If ECM connector terminals are okay, replace ECM.