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MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS TSB Revision MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE> 13A-731 STEP 18. Using scan tool MB991958, check actuator test. Actuator Test Reference Table . a. Item 9: Fuel pump (3) Turn the ignition switch to the "LOCK" (OFF) position. YES : Go to Step 19. symptom is eliminated. STEP 19. Check the fuel pressure. . Q: Is the fuel pressure normal? YES : Go to Step 20. symptom is eliminated. STEP 20. Check the ignition system. connector B-01, B-19, B-04 or B-18 in order. (2) Crank the engine. • The timing light flashes. (3) Turn the ignition switch to the "LOCK" (OFF) position. YES : Go to Step 21. − Ignition circuit . STEP 21. Check the spark plugs. − On-vehicle Service − Spark Plug Check And Cleaning . Q: Are there any abnormalities? YES : Replace the spark plug. Then confirm that the malfunction symptom is eliminated. NO : Go to Step 22. STEP 22. Check the ignition coil. − On-vehicle Service − . Q: Are there any abnormalities? YES : Replace the ignition coil. Then confirm that the malfunction symptom is eliminated. NO : Go to Step 23. |