ENGINE 273 MPFI 271 ENGINE INTAKE AIR CONTROL VALVE (IACV) / ISC VALVE Pin Details Signal Connector ECU Pin No. Pin No. Stepper DriverA A 37 Stepper Driver B B 38 Stepper Driver C C 26 Stepper Driver D D 25 Pin Configuration Stand Alone Diagnosis Insulation Resistance between the pins >100MOhm Inductivity (at 25 °C) 38 Mh +/- 15% SystemDiagnosis • Use TATAdiagnostic Tool. Location This actuator is part of integral throttle body which is fitted on intake manifold upstream side. Preferred orientation of shaft is horizontal in direction of the crankshaft. The maximum tightening torque of fixing screws is 10 Nm. Working Principle Intake air control valve is the part of the mechanical throttle body. This valve allows accurate flow control by varying flow cross section area. This is done by moving the spindle in both open/close directions operated by a stepper motor. Installation Details Preferred orientation of shaft is horizontal in direction of the crankshaft. The maximum tightening torque of fixing screws is 4 to 5 Nm. Storage Conditions Storage Temperature -40 °C to 130 °C Maximum Storage Time 3 Years Operating Temperature range -30 °C to 120 °C
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