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Home >> Chevrolet >> 2003 >> Tracker 2D Utility, RWD, Standard >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - System & Component Testing >> Fuel Systems >> Fuel Injector Coil Test - ECT Is 50-95°F (2.5L) >> Diagnostic Procedures

Diagnostic Procedures

  1. Perform Diagnostic System Check - Engine Controls. See DIAGNOSTIC SYSTEM CHECK - ENGINE CONTROLS under SELF-DIAGNOSTIC SYSTEM in SELF-DIAGNOSTICS - 2.5L TRACKER article. After performing Diagnostic System Check - Engine Controls, go to next step.
  2. Install scan tool. Using scan tool, check engine coolant temperature. If scan tool displays 50-95°F (10-35°C), go to next step. If scan tool does not display 50-95°F (10-35°C), see INJECTOR COIL TEST - ECT IS NOT 50-95°F (2.5L) .
    3. CAUTION: In order to prevent flooding of cylinder and possible engine damage, release fuel pressure before performing injector coil test procedure.
    NOTE: Perform this step on each injector.
  3. Turn ignition off. Relieve fuel system pressure. See FUEL SYSTEM PRESSURE RELEASE . 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 after first second of test. If any injector has an erratic voltage reading or voltage reading is not 4.5-7.0 volts, go to next step. If all injectors have a steady voltage reading or voltage reading is 4.5-7.0 volts, perform fuel injector balance test. See FUEL INJECTOR BALANCE TEST .
  4. Replace faulty injector(s) and perform fuel injector balance test. See FUEL INJECTOR BALANCE TEST .
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