Injector Coil Test ECT Between 50-95°F
- If powertrain OBD system check has been performed, go to next step. If powertrain OBD system check has not been performed, perform powertrain OBD system check. See POWERTRAIN OBD SYSTEM CHECK in TESTS W/CODES article.
- Connect scan tool to data link connector. Using scan tool, check engine coolant temperature. If 50-95°F (10-35°C) is displayed, go to next step. If 50-95°F (10-35°C) is not displayed, perform INJECTOR COIL TEST - ECT NOT BETWEEN 50-95°F test.NOTE: Perform step 3) on each injector.
- Turn ignition switch to LOCK position. Relieve fuel pressure. Disconnect fuel injector harness connectors. 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 0.5-amp position. connect DVOM to injector tester. Depress PUSH TO START TEST button. Record lowest voltage reading within first second of test. If any injector has erratic voltage reading or reading not 5.7-6.6 volts, go to next step. If no injector has erratic voltage reading or reading not 5.7-6.6 volts, perform injector balance test. See FUEL INJECTOR BALANCE TEST.
- Replace faulty injector(s) and perform injector balance test. See FUEL INJECTOR BALANCE TEST.
WARNING:
In order to prevent flooding of cylinder and possible engine damage, relieve fuel pressure before performing injector coil test procedure.