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DTC P0102, P0103 MAF SENSOR EC-147 [KA24DE] C D E F G H I J K L M A EC 4. CHECK POWER SUPPLY 1. Disconnect mass air flow sensor harness connector. 2. Turn ignition switch ON. 3. Check voltage between terminal 2 and ground with CONSULT-II OK or NG OK >> GO TO 6. NG >> GO TO 5. 5. DETECT MALFUNCTIONING PART Check the following. ● Harness for open or short between ECM relay and mass air flow sensor ● Harness for open or short between mass air flow sensor and ECM >> Repair harness or connectors. 6. CHECK GROUND CIRCUIT 1. Turn ignition switch OFF. 2. Disconnect ECM harness connector. 3. Check harness continuity between mass air flow sensor terminal 3 and ECM terminal 55. 4. Also check harness for short to ground or 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. 7. CHECK INPUT SIGNAL CIRCUIT 1. Check harness continuity between terminal 4 and ECM terminal 54. 2. Also check harness for short to ground and short to power. OK or NG OK >> GO TO 8. NG >> Repair open circuit or short to ground or short to power in harness or connectors. AEC131A Voltage : Battery voltage SEF126V Continuity should exist. Continuity should exist. |