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TROUBLE DIAGNOSIS - SPECIFICATION VALUE EC-155 C D E F G H I J K L M A EC
2005 Pathfinder 20. CHECK “A/F ALPHA-B1”, “A/F ALPHA-B2”, AND “B/FUEL SCHDL” Select “A/F ALPHA-B1”, “A/F ALPHA-B2”, and “B/FUEL SCHDL” in “DATA MONITOR (SPEC)” mode, and OK or NG OK >> INSPECTION END NG (“B/FUEL SCHDL” is more, “A/F ALPHA-B1”, “A/F ALPHA-B2” are less than the SP value)>>GO TO 21. 21. DISCONNECT AND RECONNECT MASS AIR FLOW SENSOR HARNESS CONNECTOR 1. Stop the engine. 2. Disconnect mass air flow sensor harness connector. Check pin terminal and connector for damage and >> GO TO 22. 22. CHECK “A/F ALPHA-B1”, “A/F ALPHA-B2” 1. Start engine. 2. Select “A/F ALPHA-B1”, “A/F ALPHA-B2” in “DATA MONITOR (SPEC)” mode, and make sure that the OK or NG OK >> 1. Detect malfunctioning part of mass air flow sensor circuit and repair it. Refer to . 2. GO TO 29. NG >> GO TO 23. 23. CHECK “MAS A/F SE-B1” Select “MAS A/F SE-B1” in “DATA MONITOR (SPEC)” mode, and OK or NG OK >> GO TO 24. NG (More than the SP value)>>Replace mass air flow sensor, and then GO TO 29. 24. REPLACE ECM 1. Replace ECM. 2. Perform initialization of NVIS(NATS) system and registration of all NVIS(NATS) ignition key IDs. Refer to BL-101, "ECM Re-communicating Function" . 3. Perform . 4. Perform EC-88, "Accelerator Pedal Released Position Learning" . 5. Perform EC-88, "Throttle Valve Closed Position Learning" . 6. Perform EC-89, "Idle Air Volume Learning" . >> GO TO 29. PBIB2370E |