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EC-658 [QG (WITHOUT EURO-OBD)] DTC P0102, P0103 MAF SENSOR 4. CHECK MAF SENSOR POWER SUPPLY CIRCUIT 1. Disconnect MAF sensor harness connector. 2. Turn ignition switch “ON”. 3. Check voltage between MAF sensor terminals 2, 4 and ground OK or NG OK >> GO TO 6. NG >> GO TO 5. 5. DETECT MALFUNCTIONING PART Check the following. ● Harness connectors M71, F45 ● Harness for open or short between mass air flow sensor and ECM ● Harness for open or short between mass air flow sensor and ECM relay >> 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. 4. 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. MBIB0096E Terminal Voltage 2 Approximately 5V 4 Battery voltage PBIB0076E Continuity should exist. |