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Injector #1 Control Circuit

WARNING: This page is about a different car, the 1995 Plymouth Acclaim and 1995 Dodge Spirit. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: For circuit and connector terminal identification, see CONNECTOR IDENTIFICATION. For wiring diagrams, see WIRING DIAGRAMS - 2.5L TBI article in ENGINE PERFORMANCE.
  1. Turn ignition off. Disconnect injector No. 1 connector (White/Dark Blue and Dark Green/Black wires). Using an external ohmmeter, check injector resistance. If resistance is not 2-5 ohms, replace injector No. 1. Perform TEST VER-2.
  2. If resistance is 2-5 ohms, turn ignition on. Using scan tool, actuate injector No. 1. Using scan tool, check voltage on injector No. 1 connector (Dark Green/Black wire). If voltage is less than 10 volts, repair open in Dark Green/Black wire. Perform TEST VER-2.
  3. If voltage is more than 10 volts, turn ignition off. Disconnect Powertrain Control Module (PCM) connector. Using an external ohmmeter, check resistance of White/Dark Blue wire between injector No. 1 connector and PCM connector terminal No. 16. If resistance is more than 5 ohms, repair open in White/Dark Blue wire. Perform TEST VER-2.
  4. If resistance is less than 5 ohms, put scan tool in ohmmeter mode. Using scan tool, check resistance of PCM connector terminal No. 16 (White/Dark Blue wire). If resistance is less than 5 ohms, repair short to ground in White/Dark Blue wire. Perform TEST VER-2. If resistance is more than 5 ohms, replace PCM. Perform TEST VER-2.
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