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Test TC-17C - Injector #1 Control Circuit

NOTE: For circuit and connector terminal identification, see CONNECTOR IDENTIFICATION. For wiring diagrams, see WIRING DIAGRAMS - 3.0L article in ENGINE PERFORMANCE.
NOTE: It may be necessary to remove intake plenum when performing this procedure.
  1. Reconnect 8-pin injector harness connector. Disconnect injector No. 1 connector. Turn ignition on. Using scan tool, actuate Auto Shutdown (ASD) relay. Place scan tool in voltmeter mode.
  2. Using scan tool, check voltage of injector No. 1 connector Dark Green/Orange wire. If voltage is less than 10 volts, repair open in Dark Green/Orange wire. Perform TEST VER-2 . If voltage is more than 10 volts, turn ignition off. Go to next step.
  3. Disconnect 8-pin injector harness connector. Using an external ohmmeter, check resistance of White/Dark Blue wire between injector No. 1 connector and 8-pin injector harness connector (injector side).
  4. If resistance is more than 5 ohms, repair open in White/Dark Blue wire. Perform TEST VER-2. If resistance is less than 5 ohms, replace injector. Perform TEST VER-2 .
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