Vehicle Platform & ECU Name DTC Troubleshooting Data Ver: 1 Date: 23/11/2022 Author: ERC Page 46 of 834 Copyright by TATA MOTORS Ltd. This document must not be used in any w ay, such as copying and redistributing to third parties, w ithout our consent Circuit Description: ECM monitors the Air mass flow with the help of AMF sensor. The AMF sensor is hot film type. The hot film is supplied with electric current from the Engine Control Module ECM. The temperature of the hot film is controlled by ECM by a certain amount. The heat generated by the hot film is reduced as the intake air flows around it. The more the air flow is, the greater the heat loss. Therefore, ECM must supply more electric current to maintain the temperature of the hot film as air flow increases. ECM detects the air flow by means of this current change. Circuit Schematic Diagram: Component location and image:
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