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MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS TSB Revision MULTIPORT FUEL INJECTION (MFI) 13A-887 STEP 4. Using scan tool MB991958, check data list. CAUTION To prevent damage to scan tool MB991958, always turn the 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. STEP 5. Using scan tool MB991958, check data list. Reference Table a. Item 39: Right Bank 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. YES : Go to Step 7. AK302970 AB MB991911 MB991824 MB991827 AK302970 AB MB991911 MB991824 MB991827 |