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DTC P0101 MAF SENSOR EC-1331 [VG33ER] C D E F G H I J K L M A EC Specification data are reference values and are measured between each terminal and ground. CAUTION: Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in dam- Diagnostic Procedure UBS00DTH 1. INSPECTION START Which malfunction (A or B) is duplicated? A or B A >> GO TO 3. B >> GO TO 2. 2. CHECK INTAKE SYSTEM Check the following for connection. ● Air duct ● Vacuum hoses ● Intake air passage between air duct to intake manifold collector OK or NG OK >> GO TO 3. NG >> Reconnect the parts. 3. RETIGHTEN GROUND SCREWS 1. Turn ignition switch OFF. 2. Loosen and retighten engine ground screws. >> GO TO 4. TER- MINAL NO. WIRE COLOR ITEM CONDITION DATA (DC Voltage) 54 R Mass air flow sensor [Engine is running] ● Warm-up condition ● Idle speed 1.0 - 1.7V [Engine is running] ● Warm-up condition ● Engine speed is 2,500 rpm 1.7 - 2.3V 55 G Mass air flow sensor [Engine is running] ● Warm-up condition ● Idle speed Approximately 0V 67 B/P Power supply for ECM [Ignition switch: ON] BATTERY VOLTAGE 72 B/P Power supply for ECM [Ignition switch: ON] BATTERY VOLTAGE BBIA0418E |