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MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS TSB Revision MULTIPORT FUEL INJECTION (MFI) <3.8L ENGINE> 13B-1021 STEP 3. Check the ignition timing. Refer to GROUP 11A, On-vehicle Service − Ignition Timing Check Q: Is the ignition timing normal? YES : Go to Step 4. belt cover are in the correct position. Then confirm STEP 4. Using scan tool MB991958, check data list. CAUTION To prevent damage to scan tool MB991958, always turn the (3) Check the following items in the data list. Refer to Data List Reference Table a. Item 13: Intake Air Temperature Sensor. c. Item 21: Engine Coolant Temperature Sensor. d. Item 69: Right Bank Heated Oxygen Sensor (rear). f. Item 59: Left Bank Heated Oxygen Sensor (rear). g. Item 11: Left Bank Heated Oxygen Sensor (front). (4) Turn the ignition switch to the "LOCK" (OFF) position. YES : Go to Step 5. symptom is eliminated. AC305412 AB MB991910 DATA LINK CONNECTOR MB991824 MB991827 |