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MULTIPORT FUEL INJECTION(MFI) DIAGNOSIS TSB Revision MULTIPORT FUEL INJECTION (MFI) <2.4L> 13A-345 STEP 8. Check the fuel pressure. Q: Is the fuel pressure normal? YES : Go to Step 9. symptom is eliminated. STEP 9. Check the ignition timing. − Ignition Timing Check ( Q: Is the ignition timing normal? YES : Check the following items, and repair or replace the defective items. a. Check the ignition coil, spark plugs, spark plug cables. b. Check compression pressure. c. Check the engine oil viscosity. Then confirm that the malfunction symptom is eliminated. NO : Check that the crankshaft position sensor and timing belt cover are in the correct position. Then confirm INSPECTION PROCEDURE 12: When the Engine Is Hot, It Stalls at Idle (Die Out). COMMENT • In cases such as the above, the ignition system, TROUBLESHOOTING HINTS (The most likely • Malfunction of the ignition system. • Malfunction of air/fuel ratio control system. • Malfunction of the IAC system. • Vacuum leak. • Improper connector contact. DIAGNOSIS Required Special Tool: STEP 1. Check if the battery terminal is disconnected Q: Has the battery terminal been disconnected lately? YES : Start the engine and let it run at idle for approximate 10 minutes after engine warm up. Then, if a NO : Go to Step 2. |