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Home >> Eagle >> 1997 >> Talon Base, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Tests W/Codes - Non-Turbo >> Trouble Code Tests >> Test TC-119A - Fuel System Lean
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Test TC-119A - Fuel System Lean

NOTE: For connector terminal ID, see CONNECTOR IDENTIFICATION  Directory. For wiring diagram, see appropriate WIRING DIAGRAMS - NON-TURBO article.
  1. A very low fuel level could cause this trouble code to set. Ensure fuel tank is at least 1/4 full. If vehicle ran out of fuel shortly before coming in for service, erase trouble codes. Test is complete. Perform TEST VER-2A. If vehicle did not run out of fuel shortly before coming in for service, go to next step.
  2. FUEL SYSTEM LEAN DTC sets when the Powertrain Control Module (PCM) performs a test to determine if fuel system is running too lean. If fuel system is running too lean for 2 trips, Malfunction Indicator Light (MIL) illuminates and a trouble code is stored. MIL remains on for more than one trip but goes out if conditions which occurred to set code are not found on subsequent trips. Possible causes are:
    • Faulty ignition coil.
    • Failed PCM.
    • Engine parts tolerance.
    • Leaking exhaust pipe/manifold.
    • Faulty fuel pump.
    • Plugged fuel filter.
    • Faulty secondary ignition cables.
    • Faulty injectors.
    • Faulty Manifold Absolute Pressure (MAP) sensor.
    • Faulty upstream O2 sensor.
    • Faulty fuel pressure regulator.
    • Faulty fuel pump relay or faulty spark plugs.
  3. Using scan tool, read trouble codes. If any other related trouble codes are set that can cause a lean condition, perform appropriate trouble code test. If no other related trouble codes are set that can cause a lean condition, go to next step.
  4. Start engine. Allow engine to idle. Run engine until normal operating temperature is reached. After engine reaches operating temperature, allow engine to idle for an additional 20 seconds. Check exhaust system for leaks between engine and upstream O2 sensor. If exhaust leaks are present, repair exhaust leak as necessary. Perform TEST VER-5A. If exhaust leaks are not present, go to next step.
  5. Turn engine off. Restart engine. Using scan tool, read short and long adaptive memory values. If any long term adaptive memory is between positive 20 percent and positive 32 percent, go to TEST TC-119B. If any long term adaptive memory is not between positive 20 percent and positive 32 percent, condition to set trouble code is no longer present. Test is complete. Perform TEST VER-5A.
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