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Injector Circuit

  1. Disconnect all injector harness connectors. Using a DVOM, check resistance across terminals of each injector. See INDIVIDUAL INJECTOR RESISTANCE table.
  2. Disconnect injector bank harness connector, and check resistance of injector bank. See INJECTOR BANK RESISTANCE table. Repair wiring or replace any injector circuit not within specification.
INDIVIDUAL INJECTOR RESISTANCE

Engine Ohms
4.0L 11-18
INJECTOR BANK RESISTANCE

Engine Ohms
4.0L 0.0-5.5
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