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Test Dr-18B - "Injector No. 3 Control Circuit"

NOTE: For connector terminal identification, see CONNECTOR IDENTIFICATION  . For wiring diagram, see WIRING DIAGRAMS  at end of article.
  1. Turn ignition on. Using DRB-II, actuate fuel system. Place DRB-II in voltmeter mode. Probe Dark Green/Black wire at injector No. 3 connector. If voltage is 10 volts or less, repair open Dark Green/Black wire between injector connector and harness splice. Perform VERIFICATION TEST VER-2  . If voltage is more than 10 volts, go to next step.
  2. Turn ignition off. Disconnect and inspect engine controller 60-pin connector. Repair connector if damaged. Perform VERIFICATION TEST VER-2  . If connector is okay, place DRB-II in ohmmeter mode. Check resistance of Tan/Yellow wire at engine controller connector terminal No. 14. If resistance is less than 10 ohms, repair Tan/Yellow wire for a short to ground. Perform VERIFICATION TEST VER-2  .
  3. If resistance is 10 ohms or more, check resistance of Tan/Yellow wire between fuel injector No. 3 connector and engine controller connector terminal No. 14 using a DVOM. If resistance is 10 ohms or more, repair open Tan/Yellow wire. Perform VERIFICATION TEST VER-2  . If resistance is less than 10 ohms, replace engine controller. Perform VERIFICATION TEST VER-2  .
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