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MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS TSB Revision MULTIPORT FUEL INJECTION (MFI) <3.8L ENGINE> 13B-1037 STEP 12. Using scan tool MB991958, check data list item (1) Start the engine and run at idle. 11, Heated Oxygen Sensor bank 2, sensor 1 (left front). • Warm up the engine. When the engine is decelerated suddenly from 4,000 r/min, the output voltage should − 1.0 volt in a few seconds. (3) Turn the ignition switch to the "LOCK" (OFF) position. YES : Go to Step 13. STEP 13. Check the EGR system. Refer to GROUP 17, Emission Control System − General Q: Is the EGR system normal? YES : Go to Step 14. symptom is eliminated. AC305412 AB MB991910 DATA LINK CONNECTOR MB991824 MB991827 |