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DTC NO. DTC DETECTION CONDITION TROUBLE AREA P0102 Mass air flow meter voltage is below 0.2 V for 3 seconds (1 trip detection logic: Engine speed is less than 4000 rpm) (2 trip detection logic: Engine speed is 4000 rpm or more). Open or short in mass air flow meter circuit Mass air flow meter ECM P0103 Mass air flow meter voltage is higher than 4.9 V for 3 seconds (1 trip detection logic: Engine speed is less than 4000 rpm) (2 trip detection logic: Engine speed is 4000 rpm or more). Open or short in mass air flow meter circuit Mass air flow meter ECM HINT: MASS AIR FLOW RATE (GM/SEC.) MALFUNCTION Approximately 0.0 Open in Mass Air Flow (MAF) meter power source circuit Open or short in VG circuit 160.0 or more Open in E2G circuit MONITOR DESCRIPTION If there is a defect in the MAF meter or an open or short circuit, the voltage level deviates from the normal operating range. The ECM interprets this deviation as a malfunction in the MAF meter and stores a DTC. Example: When the sensor output voltage remains at less than 0.2 V, or more than 4.9 V for more than 3 seconds, the ECM stores a DTC. If the malfunction is not repaired successfully, a DTC is stored 3 seconds after the engine is next started. MONITOR STRATEGY Related DTCs P0102: MAF meter range check (Low voltage) P0103: MAF meter range check (High voltage) Required Sensors/Components (Main) MAF meter Required Sensors/Components (Related) Crankshaft position sensor Duration 3 seconds MIL Operation Immediate: Engine speed less than 4000 rpm 2 driving cycles: Engine speed 4000 rpm or more 1UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: P0102,P0103;... |