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EC-124 < COMPONENT DIAGNOSIS > [VQ40DE] P0102, P0103 MAF SENSOR 3. Check voltage between MAF sensor terminal 2 and ground with CONSULT-III or tester. OK or NG OK >> GO TO 6. NG >> GO TO 5. 5. DETECT MALFUNCTIONING PART Check the following. • Harness connectors E2, F32 • Harness for open or short between IPDM E/R and mass air flow sensor • Harness for open or short between mass air flow sensor and ECM >> Repair open circuit or short to ground or short to power in harness or connectors. 6. CHECK MAF SENSOR GROUND CIRCUIT FOR OPEN AND SHORT 1. Turn ignition switch OFF. 2. Disconnect ECM harness connector. 3. Check harness continuity between MAF sensor terminal 3 and ECM terminal 67. Refer to Wiring Diagram. 4. Also check harness for short to ground and short to power. OK >> GO TO 7. NG >> Repair open circuit or short to ground or short to power in harness or connectors. 7. CHECK MAF SENSOR INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT 1. Check harness continuity between MAF sensor terminal 4 and ECM terminal 51. Refer to Wiring Diagram. 2. Also check harness for short to ground and short to power. OK >> GO TO 8. NG >> Repair open circuit or short to ground or short to power in harness or connectors. 8. CHECK MASS AIR FLOW SENSOR EC-120, "Component Inspection" OK or NG OK >> GO TO 9. NG >> Replace mass air flow sensor. 9. CHECK INTERMITTENT INCIDENT GI-37, "Intermittent Incident" >> INSPECTION END Component Inspection INFOID:0000000005257097 MASS AIR FLOW SENSOR Voltage: Battery voltage PBIB1168E Continuity should exist. Continuity should exist. 2010 Pathfinder |