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Section 05 2–TEC ENGINE MANAGEMENT Subsection 03 (DIAGNOSTIC PROCEDURES) DIAGNOSTIC PROCEDURES GENERAL Here is the basic order suggested to diagnose a suspected engine management or fuel injection related – Check the chart in TROUBLESHOOTING section to have an overview of problems and suggested so- lutions. – Check if the engine management system (EMS) pilot lamp lights up. If so, use the VCK (Vehicle Com- munication Kit) and look for fault codes to diagnose the trouble. – Check all fuses, battery and capacitor (on so equipped models). Refer to COMPONENT INSPECTION AND ADJUSTMENT section for procedures. TROUBLESHOOTING The following chart is provided to help in diagnosing the probable source of simple troubles. Monitoring Beeper Coded Signals CODED SIGNALS POSSIBLE CAUSE REMEDY 2 short beeps (when engine is started). DESS/RER pilot lamp also blinks. Confirms that proper tether cord cap is installed. Engine can rev above clutch engagement. No problem detected. Good ride. 1 short beep every 1.5 seconds (when engine is started). DESS/RER pilot lamp also blinks. Engine cannot reach pulley engagement speed. Vehicle cannot be driven. Bad DESS system connection. Defective tether cord cap. Dirt or snow in tether cord cap. Defective DESS post. Reinstall tether cord cap correctly over post. Use another programmed tether cord cap. Clean tether cord cap. Replace DESS post. 1 long beep per second. Reverse is selected. Vehicle can be driven in reverse. 3 short beeps per second. DESS/RER pilot lamp also blinks. Engine cannot reach pulley engagement speed. Vehicle cannot be driven. Wrong tether cord cap is installed. Install proper tether cord cap. Program key into ECM. 3 short beeps per second. Engine overheating pilot lamp also blinks. Engine is overheating. Stop engine immediately and allow to cool. Check cooling system. 1 long beep (2 seconds) every 15 minutes. Low battery voltage. Check battery and charging system. 4 short beeps every 2 minutes. Oil pilot lamp also lights up. Low oil level on 2-TEC models. Check oil level and replenish as soon as possible. Many other codes use the engine pilot lamp and the buzzer to indicate a problem. Refer to B.U.D.S. for mmr2004-Rev 203 |