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Injector Coil Test - ECT Is 50-95°F (2.2L)

WARNING: In order to prevent flooding of cylinder and possible engine damage, relieve fuel pressure before performing injector coil test procedure.
  1. Perform powertrain diagnostic system check. See POWERTRAIN DIAGNOSTIC SYSTEM CHECK in appropriate SELF-DIAGNOSTICS article. After performing powertrain diagnostic system check, go to next step.
  2. Install scan tool. Using scan tool, check engine coolant temperature. If coolant temperature is 50-95°F (10-35°C), go to next step. If coolant temperature is not 50-95°F (10-35°C), perform injector coil test. See INJECTOR COIL TEST - ECT IS NOT 50-95°F (2.2L) .
    3. NOTE: Perform step  3 on each injector.
  3. Turn ignition off. Relieve fuel pressure. Disconnect fuel injectors harness connector. Using appropriate fuel injector adapter, connect Fuel Injector Tester (J-39021) to fuel injector. Connect fuel injector tester power leads to appropriate battery terminals. Set amperage supply selector switch on fuel injector tester to Coil Test 2.5-amp position. Connect DVOM to injector tester. Depress PUSH TO START TEST button. Record lowest voltage reading within first second of test. Repeat procedure for each injector. If any injector has erratic voltage reading or reading not within 4.7-5.8 volts, go to next step. If no injector has erratic voltage reading or reading not within 4.7-5.8 volts, perform injector balance test. See INJECTOR BALANCE TEST (2.2L & 3.4L) .
  4. Replace faulty injector(s). After repairs, perform injector balance test. See INJECTOR BALANCE TEST (2.2L & 3.4L) .
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