STAND ALONE DIAGNOSIS / SENSOR CHECKING PROCEDURE OPERATING SPECIFICATION Equipment : Use Multimeter Power Supply : 6-16V Checking : With Ignition ‘ON’, Condition : Voltage between GND and Vout Signal Voltage : 4.7V (When the Flag is not in front of the sensor) :0.6V (When the Flag is in front of the sensor) Operating Temperature: -300 to 1200C Air Gap: 0.5-1.5 mm Target Speed: 0-4000 rpm CONNECTOR DETAILS PINOUT DETAILS AIR MASS FLOW SENSOR IV. This sensor is mounted between air filter and turbocharger. It gives Information about the amount of air quantity & temperature entering the engine. This input is used by the ECU for corrections of fuel quantity based on amount of air availability for optimization of exhaust gas circulation & the turbocharger control. While assembling, the AMF sensor the point of the arrow should be towards the Turbo charger. SENSOR LOCATION Checking Condition With Ignition ‘ON’, • Check Output Voltage between Pin 3 (MAF) • and Pin 5 (GND). Check Output Current between Pin 1 (Ub) and • Pin 5 (GND). PIN NO DESCRIPTION 1 Supply (+) 2 Ouput 3 Ground (-) Diesel Engine Ph-2 (CAFÉ) 199
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