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MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS TSB Revision MULTIPORT FUEL INJECTION (MFI) <3.0L> 13B-991 STEP 6. Using scan tool MB991958, check data list. CAUTION To prevent damage to scan tool MB991958, always turn the Reference Table a. Item 21: Engine Coolant Temperature Sensor. c. Item 25: Barometric pressure Sensor. d. Item 69: Right Bank Heated Oxygen Sensor (rear). (4) Turn the ignition switch to the "LOCK" (OFF) position. YES : Go to Step 7. symptom is eliminated. STEP 7. Using scan tool MB991958, check data list item 39: 39, Right Bank Heated Oxygen Sensor (front). • Warm up the engine. When the engine is decelerated suddenly from 4,000 r/min, the output voltage should − 1,000 milli- volts in a few seconds. (3) Turn the ignition switch to the "LOCK" (OFF) position. YES : Go to Step 8. − Heated Oxygen Sensor Circuit (bank 1, sensor 1) , DTC P0131 − Heated Oxygen Sensor Circuit Low Voltage (bank 1, sensor , DTC P0132 − Heated Oxygen Sensor Circuit High Voltage (bank 1, sensor 1) DTC P0133 − Heated Oxygen Sensor Circuit Slow Response (bank 1, sensor 1) , DTC P0134 − Heated Oxygen Sensor Circuit No Activity Detected (bank 1, sensor 1) AK300810 AB MB991911 16-PIN MB991827 MB991824 AK300810 AB MB991911 16-PIN MB991827 MB991824 |