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P0102, P0103 MAF SENSOR EC-649 < DTC/CIRCUIT DIAGNOSIS > [VK56DE] C D E F G H I J K L M A EC N P O 3. Check voltage between MAF sensor terminal 2 and ground with CONSULT or tester. OK or NG OK >> GO TO 6. NG >> GO TO 5. 5. DETECT MALFUNCTIONING PART Check the following. • Harness connectors E2, F32 • IPDM E/R harness connector E119 • Harness for open or short between mass air flow sensor and IPDM E/R • Harness for open or short between mass air flow sensor and ECM >> Repair 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-649, "Component Inspection" OK or NG OK >> GO TO 9. NG >> Replace mass air flow sensor. Refer to . 9. CHECK INTERMITTENT INCIDENT GI-37, "Intermittent Incident" . >> INSPECTION END Component Inspection INFOID:0000000007358507 MASS AIR FLOW SENSOR Voltage: Battery voltage PBIB1168E Continuity should exist. Continuity should exist. August 2012 2012 Pathfinder |