Vehicle Platform & ECU Name DTC Troubleshooting Data Ver: 1.0 Date: 30/11/2019 Author: ERC Page 20 of 610 Copyright by TATA MOTORS Ltd. This document must not be used in any way, such as copying and redistributing to third parties, without our consent P0102- 37- Mass or Volume Air Flow Sensor "A" Circuit Low Overview: Code Cause Effect on Vehicle Fault Code: P0102-37 1. AMF Sensor connection 2. ECU connection 3. Electrical wiring 4. Wiring connector breakage 5. AMF Sensor malfunctioning 1.MIL Lamp On 2.Torque Reduction 3.. Reduced Vehicle Performance Checkpoints: Check Battery Voltage Trouble Shooting Steps: Sr. No. Steps Specifications Step 1 Check connector is connected properly Physical check Step 2 Check for continuity between sensor connector pins 1,2,3,4 and ECU pins B45, B47, B17,B65 respectively. Check the End to end continuity using multimeter Step 3 Check the sensor physically Physical check Step 4 If the problem persists, replace the sensor - 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:
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