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EC-1034 [YD (WITH EURO-OBD)] DTC P0101 MAF SENSOR 4. DETECT MALFUNCTIONING PART Check the following. ● Harness connectors F45, M71 ● Harness for open or short between mass air flow sensor and ECM relay ● 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. 5. CHECK MAFS GROUND CIRCUIT FOR OPEN AND SHORT 1. Turn ignition switch OFF. 2. Disconnect ECM harness connector. 3. Check harness continuity between mass air flow sensor terminal 4 and ECM terminal 73. 4. Also check harness for short to ground and short to power. OK or NG OK >> GO TO 6. NG >> Repair open circuit or short to ground or short to power in harness or connectors. 6. CHECK MAFS INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT 1. Check harness continuity between mass air flow sensor terminal 3 and ECM terminal 54. 2. Also check harness for short to ground and short to power. OK or NG OK >> GO TO 7. NG >> Repair open circuit or short to ground or short to power in harness or connectors. Continuity should exist. Continuity should exist. |