Injector Coil Test (2.5L)
WARNING:
In order to prevent flooding of cylinder and possible engine damage, relieve fuel pressure before performing injector coil test procedure.
- If powertrain diagnostic system check has been performed, go to next step. If powertrain diagnostic system check has been performed, perform powertrain diagnostic system check. See POWERTRAIN DIAGNOSTIC SYSTEM CHECK under SELF-DIAGNOSTIC SYSTEM in appropriate SELF-DIAGNOSTICS article.
- Using scan tool, check engine coolant temperature. Ensure scan tool displays 50-95°F (10-35°C) before performing test, then go to next step.
- Turn ignition off. Relieve fuel pressure. Disconnect fuel injector harness connectors. Using 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 on injector tester. Record lowest voltage reading within first second of test. If any injector has erratic voltage reading or reading is not 4.5-7.0 volts, go to next step. If no injector has erratic voltage reading or reading is not 4.5-7.0 volts, perform fuel injector balance test. See FUEL INJECTOR BALANCE TEST .
- Replace faulty injector(s) and perform fuel injector balance test. See FUEL INJECTOR BALANCE TEST .
NOTE:
Perform step 3)
on each injector.