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MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS TSB Revision MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE> 13A-387 STEP 5. Using scan tool MB991502, check actuator test. Actuator Test Reference Table ( ). a. Item 10: EGR Solenoid. (3) Turn the ignition switch to the "LOCK" (OFF) position. Q: Are they operating properly? YES : Go to Step 6. symptom is eliminated. STEP 6. Using scan tool MB991502, check data list. Reference Table ( a. Item 11: Heated Oxygen Sensor (front) • Voltage should fluctuate between 0 − 0.4 volts and 0.6 - 1.0 volts while idling after the engine has been warmed. (3) Turn the ignition switch to the "LOCK" (OFF) position. Q: Is the sensor operating properly? YES : Go to Step 8. STEP 7. Check the fuel pressure. Q: Is the fuel pressure normal? YES : Check the following items, and repair or replace the defective items. a. Vacuum leak. • Broken intake manifold gasket. • Broken air intake hose. • Broken vacuum hose. • Positive crankcase ventilation valve does b. Injector clogged. Then confirm that the malfunction symptom is eliminated. NO : Repair or replace. Then confirm that the malfunction symptom is eliminated. AKX01177 16 PIN MB991502 AB AKX01177 16 PIN MB991502 AB |