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Test TC-21C - Injector No. 1 Control Circuit

NOTE: For connector terminal ID, see CONNECTOR IDENTIFICATION. For wiring diagram, see WIRING DIAGRAMS - 2.5L article.
  1. It may be necessary to remove intake plenum for access to injector connectors. Disconnect injector No. 1 connector. Using an ohmmeter, check resistance of injector No. 1 ASD relay output circuit Black/Red wire between injector No. 1 connector and injector 10-pin connector . If resistance is less than 5 ohms, go to next step. If resistance is 5 ohms or more, repair open injector No. 1 ASD relay output circuit. Perform TEST VER-2A.
  2. Using an ohmmeter, check resistance of injector No. 1 driver circuit Brown/White wire between injector No. 1 connector and injector 10-pin connector. If resistance is less than 5 ohms, replace injector No. 1. Perform TEST VER-2A. If resistance is 5 ohms or more, repair open injector No. 1 driver circuit. Perform TEST VER-2A.
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